{"id":10424,"date":"2024-02-15T10:05:44","date_gmt":"2024-02-15T15:05:44","guid":{"rendered":"https:\/\/extension.umaine.edu\/highmoor\/?page_id=10424"},"modified":"2026-03-30T12:09:09","modified_gmt":"2026-03-30T16:09:09","slug":"evaluation-2022-research-report","status":"publish","type":"page","link":"https:\/\/extension.umaine.edu\/highmoor\/resources-by-crop\/celeriac\/evaluation-2022-research-report\/","title":{"rendered":"Celeriac Evaluation: 2022 Research Report"},"content":{"rendered":"<p><strong>Peyton Ginakes, University of Maine Cooperative Extension Research Associate<\/strong><br \/>\n<strong>Mark Hutton, University of Maine Cooperative Extension Vegetable Specialist<\/strong><br \/>\n<strong>David Handley, University of Maine Cooperative Extension Small Fruit &amp; Vegetable Specialist<\/strong><\/p>\n<p>A celeriac (<em>Apium graveolens var. rapaceum<\/em>) trial was conducted at Highmoor Farm in 2022. Celeriac, also sometimes called celery root, is similar to stalk celery, but is grown instead for its swollen tuberous base. Celeriac typically has a celery-like flavor but can keep longer in storage, making it a suitable winter substitution for celery. It is often cooked in soups, roasted alongside other winter vegetables, or sliced thinly to eat raw in salads. The purpose of these evaluations were to develop celeriac cultivar and plant spacing recommendations for Maine farmers.<\/p>\n<h3>Seedling Production<\/h3>\n<p>Celeriac was seeded into 128-cell trays filled with ProMix BX + Mycorrhizae media on April 13 using a vacuum seeder, and placed on 70 \u02daF heating mats. Seedlings were grown in a greenhouse until planting in the field. Seedlings were thinned to one plant per cell on June 7, and fertilized with 1 Tbsp\/gal of 12-45-10 Nutriculture Spoon-Feeding soluble fertilizer on June 14 (approximately 2 months after seeding).<\/p>\n<h3>Trial Design<\/h3>\n<p>Celeriac production was evaluated in a split-plot randomized complete block design with three replications, using cultivar as a main plot factor and in-row plant spacing as a subplot factor. Cultivars included Alicia, Balena, Brilliant, and Diamant and in-row spacings were 6\u201d, 12\u201d, and 18\u201d. Plant spacing was included as a factor because we were not able to find clear recommendations for the Northeast region. Celeriac yield was compared based on weight and size class. We hypothesized that overall yield and celeriac size would be inversely proportionate: while greater plant densities would result in greater overall yield, individual celeriac size would decrease as a result of competition.<\/p>\n<p>The field was fertilized with 50 lb\/ac of 10-10-10 before black plastic mulch with one line of buried drip tape was installed on raised beds. Each plot consisted of eight plants that were transplanted by hand into double rows spaced 14\u201d apart on June 22 (70 days after seeding), with in-row spacing varied according to treatment. Plants were watered in with 1 cup each of 12-45-10 Nutriculture Spoon-Feeding soluble fertilizer (1 Tbsp\/gal) immediately after transplanting. Plots were irrigated as needed, kept free of weeds, and fertigated once on August 1 (40 days after transplanting) using the same Nutriculture soluble fertilizer.<\/p>\n<h3>Visual Observations<\/h3>\n<p>Celeriac plants grew very slowly \u2013 markedly more so than adjacent celery plants. Plants grown at 6\u201d in-row appeared to have the greatest vigor and growth rate. However, because we replaced dead plants with new seedlings twice within nine days after transplanting, we did not measure plant vigor directly. We also observed that plant roots appeared root bound even a month after transplanting, indicating that early growth may have benefitted from earlier transplanting. Growth increased greatly at the end of the season as hypocotyls (the edible celeriac base) enlarged.<\/p>\n<h3>Data Collection<\/h3>\n<p>A minimum of three plants per plot were harvested on October 21 (121 days after transplanting). Stalks and roots were trimmed, and individual celeriac were sorted into size classes based on diameter (small: 2-3\u201d, medium: 3-4\u201d, large: &gt; 4\u201d) and weighed. Celeriac less than 2\u201d in diameter were deemed unmarketable.<\/p>\n<figure id=\"10428\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Celeriac-figure-1-2022.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10428\" src=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Celeriac-figure-1-2022-272x300.jpg\" alt=\"celeriac growing on black plastic in a field\" width=\"300\" height=\"331\" srcset=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Celeriac-figure-1-2022-272x300.jpg 272w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Celeriac-figure-1-2022-929x1024.jpg 929w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Celeriac-figure-1-2022-768x846.jpg 768w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Celeriac-figure-1-2022-105x116.jpg 105w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Celeriac-figure-1-2022-317x349.jpg 317w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Celeriac-figure-1-2022-423x466.jpg 423w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Celeriac-figure-1-2022-634x699.jpg 634w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Celeriac-figure-1-2022-846x932.jpg 846w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Celeriac-figure-1-2022-951x1048.jpg 951w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Celeriac-figure-1-2022.jpg 990w\" sizes=\"auto, (max-width: 320px) 85vw, (max-width: 768px) 67vw, (max-width: 1024px) 62vw,300px\" \/><\/a><figcaption class=\"wp-caption-text\"><strong>Figure 1<\/strong>. Celeriac trial at University of Maine\u2019s Highmoor Farm in Monmouth, ME at harvest on October 21, 2022 (121 days after transplanting).<\/figcaption><\/figure>\n<h3>Results<\/h3>\n<p>Average and maximum weight of individual celeriac are shown in Table 1. Balena and Brilliant celeriac typically were larger than Alicia and Diamant. In this planting, 12\u201d in-row spacing generally produced the largest celeriac followed by the 18\u201d spacing and 6\u201d spacing.<\/p>\n<div>\n<table style=\"width: 75%\" border=\"1\" cellspacing=\"0\" cellpadding=\"3\" align=\"center\">\n<caption>\n<h4><strong><a id=\"table-1\"><\/a>Table 1. Yield ranges of four celeriac cultivars grown at three in-row spacings at University of Maine\u2019s Highmoor Farm in Monmouth, Maine in 2022.<\/strong><\/h4>\n<\/caption>\n<thead>\n<tr>\n<th style=\"background-color: #eeeeee;text-align: left;vertical-align: bottom\" rowspan=\"3\" scope=\"col\"><strong>Cultivar<\/strong><\/th>\n<th style=\"background-color: #eeeeee\" colspan=\"8\" scope=\"col\">In-Row Spacing<\/th>\n<\/tr>\n<tr>\n<th style=\"background-color: #eeeeee;text-align: center\" colspan=\"2\" scope=\"col\">6&#8243;<\/th>\n<th style=\"background-color: #eeeeee;text-align: center\" colspan=\"2\" scope=\"col\">12&#8243;<\/th>\n<th style=\"background-color: #eeeeee;text-align: center\" colspan=\"2\" scope=\"col\">18&#8243;<\/th>\n<th style=\"background-color: #eeeeee;text-align: center\" colspan=\"2\" scope=\"col\"><strong>Average<\/strong><\/th>\n<\/tr>\n<tr>\n<th style=\"background-color: #eeeeee\" scope=\"col\">Avg<sup>a<\/sup><\/th>\n<th style=\"background-color: #eeeeee\" scope=\"col\">Max<\/th>\n<th style=\"background-color: #eeeeee\" scope=\"col\">Avg<\/th>\n<th style=\"background-color: #eeeeee\" scope=\"col\"><strong>Max<\/strong><\/th>\n<th style=\"background-color: #eeeeee\" scope=\"col\"><strong>Avg<\/strong><\/th>\n<th style=\"background-color: #eeeeee\" scope=\"col\">Max<\/th>\n<th style=\"background-color: #eeeeee\" scope=\"col\">Avg<\/th>\n<th style=\"background-color: #eeeeee\" scope=\"col\">Max<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Alicia<\/td>\n<td style=\"text-align: center\">0.51<\/td>\n<td style=\"text-align: center\">0.81<\/td>\n<td style=\"text-align: center\">0.53<\/td>\n<td style=\"text-align: center\">0.78<\/td>\n<td style=\"text-align: center\">0.60<\/td>\n<td style=\"text-align: center\">0.93<\/td>\n<td style=\"text-align: center\">0.55<\/td>\n<td style=\"text-align: center\">0.84<\/td>\n<\/tr>\n<tr>\n<td>Balena<\/td>\n<td style=\"text-align: center\">0.75<\/td>\n<td style=\"text-align: center\">0.98<\/td>\n<td style=\"text-align: center\">0.73<\/td>\n<td style=\"text-align: center\">1.03<\/td>\n<td style=\"text-align: center\">0.76<\/td>\n<td style=\"text-align: center\">1.08<\/td>\n<td style=\"text-align: center\">0.75<\/td>\n<td style=\"text-align: center\">1.03<\/td>\n<\/tr>\n<tr>\n<td>Brilliant<\/td>\n<td style=\"text-align: center\">0.64<\/td>\n<td style=\"text-align: center\">0.96<\/td>\n<td style=\"text-align: center\">0.84<\/td>\n<td style=\"text-align: center\">1.27<\/td>\n<td style=\"text-align: center\">0.70<\/td>\n<td style=\"text-align: center\">1.03<\/td>\n<td style=\"text-align: center\">0.73<\/td>\n<td style=\"text-align: center\">1.09<\/td>\n<\/tr>\n<tr>\n<td>Diamant<\/td>\n<td style=\"text-align: center\">0.59<\/td>\n<td style=\"text-align: center\">0.75<\/td>\n<td style=\"text-align: center\">0.90<\/td>\n<td style=\"text-align: center\">1.06<\/td>\n<td style=\"text-align: center\">0.55<\/td>\n<td style=\"text-align: center\">0.86<\/td>\n<td style=\"text-align: center\">0.68<\/td>\n<td style=\"text-align: center\">0.89<\/td>\n<\/tr>\n<tr>\n<td><strong>Average<\/strong><\/td>\n<td style=\"text-align: center\">0.62<\/td>\n<td style=\"text-align: center\">0.88<\/td>\n<td style=\"text-align: center\">0.75<\/td>\n<td style=\"text-align: center\">1.04<\/td>\n<td style=\"text-align: center\">0.65<\/td>\n<td style=\"text-align: center\">0.98<\/td>\n<td style=\"text-align: center\">&#8212;<\/td>\n<td style=\"text-align: center\">&#8212;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"text-align: center\"><sup>a<\/sup> Data shown are in lb \/ plant.<\/p>\n<p>Interestingly, allowing plants greater space to grow did not result in larger celeriac.\u00a0 No differences between the proportion of small, medium, and large celeriac were found between cultivars or spacings.\u00a0 Celeriac size classes were combined to summarize marketable yield adjusted to 100 bed-feet (Table 2).\u00a0 Spacing plants at 6\u201d in-row produced the greatest yield for all evaluated cultivars, which was expected since this spacing had two and three times the number of plants in 12\u201d and 18\u201d in-row plots, respectively, and the effect of plant spacing on celeriac weight was relatively small.\u00a0 At this high-yielding 6\u201d in-row spacing, Balena produced greater overall marketable yield than Alicia and Diamant.<\/p>\n<div>\n<table style=\"width: 75%\" border=\"1\" cellspacing=\"0\" cellpadding=\"3\" align=\"center\">\n<caption>\n<h4><strong><a id=\"table-1\"><\/a>Table 2. Marketable yield of four celeriac cultivars grown at three in-row plant spacings at University of Maine\u2019s Highmoor Farm in Monmouth, Maine in 2022.<\/strong><\/h4>\n<\/caption>\n<thead>\n<tr>\n<th style=\"background-color: #eeeeee;text-align: left;vertical-align: bottom\" rowspan=\"3\" scope=\"col\"><strong>Cultivar<\/strong><\/th>\n<th style=\"background-color: #eeeeee\" colspan=\"6\" scope=\"col\">In-Row Spacing<\/th>\n<\/tr>\n<tr>\n<th style=\"background-color: #eeeeee;text-align: center\" colspan=\"2\" scope=\"col\">6&#8243;<\/th>\n<th style=\"background-color: #eeeeee;text-align: center\" colspan=\"2\" scope=\"col\">12&#8243;<\/th>\n<th style=\"background-color: #eeeeee;text-align: center\" colspan=\"2\" scope=\"col\">18&#8243;<\/th>\n<\/tr>\n<tr>\n<th style=\"background-color: #eeeeee\" colspan=\"6\" scope=\"col\">lb \/ 100 bed-ft<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Alicia<\/td>\n<td style=\"text-align: right\">203<\/td>\n<td>A<sup>a<\/sup>\u00a0 b<sup>b<\/sup><\/td>\n<td style=\"text-align: right\">107<\/td>\n<td>B\u00a0 b<\/td>\n<td style=\"text-align: right\">180<\/td>\n<td style=\"text-align: left\">B<\/td>\n<\/tr>\n<tr>\n<td>Balena<\/td>\n<td style=\"text-align: right\">299<\/td>\n<td>A\u00a0 \u00a0a<\/td>\n<td style=\"text-align: right\">145<\/td>\n<td>B\u00a0 ab<\/td>\n<td style=\"text-align: right\">102<\/td>\n<td style=\"text-align: left\">C<\/td>\n<\/tr>\n<tr>\n<td>Brilliant<\/td>\n<td style=\"text-align: right\">256<\/td>\n<td>A\u00a0 \u00a0ab<\/td>\n<td style=\"text-align: right\">168<\/td>\n<td>B\u00a0 a<\/td>\n<td style=\"text-align: right\">93<\/td>\n<td style=\"text-align: left\">C<\/td>\n<\/tr>\n<tr>\n<td>Diamant<\/td>\n<td style=\"text-align: right\">235<\/td>\n<td>A\u00a0 \u00a0b<\/td>\n<td style=\"text-align: right\">120<\/td>\n<td>B\u00a0 ab<\/td>\n<td style=\"text-align: right\">73<\/td>\n<td style=\"text-align: left\">B<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"text-align: center\"><sup>a<\/sup> In-row spacing values in a row followed by the same capital letters are not different (p &lt; 0.05).<br \/>\n<sup>b<\/sup> Cultivar values in a column followed by the same lowercase letter are not different (p &lt; 0.05).<\/p>\n<h3>Cultivars<\/h3>\n<p><strong>Alicia<\/strong> celeriac grown at 18\u201d in-row spacing:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-10464 size-large\" src=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Alicia-figure-2-2022-1024x632.jpg\" alt=\"Harvested Alicia celeriac laying on top of the bed.\" width=\"1024\" height=\"632\" srcset=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Alicia-figure-2-2022-1024x632.jpg 1024w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Alicia-figure-2-2022-300x185.jpg 300w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Alicia-figure-2-2022-768x474.jpg 768w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Alicia-figure-2-2022-105x65.jpg 105w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Alicia-figure-2-2022-317x196.jpg 317w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Alicia-figure-2-2022-423x261.jpg 423w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Alicia-figure-2-2022-634x391.jpg 634w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Alicia-figure-2-2022-846x522.jpg 846w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Alicia-figure-2-2022-951x587.jpg 951w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Alicia-figure-2-2022-1268x782.jpg 1268w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Alicia-figure-2-2022.jpg 1430w\" sizes=\"auto, (max-width: 320px) 85vw, (max-width: 768px) 67vw, (max-width: 1024px) 62vw,1024px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Balena<\/strong> celeriac grown at 6\u201d, 12\u201d, and 18\u201d in-row spacings, respectively:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-10466 size-large\" src=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-2022-1024x675.jpg\" alt=\"Harvested Balena celeriac in a row\" width=\"1024\" height=\"675\" srcset=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-2022-1024x675.jpg 1024w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-2022-300x198.jpg 300w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-2022-768x507.jpg 768w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-2022-105x69.jpg 105w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-2022-317x209.jpg 317w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-2022-423x279.jpg 423w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-2022-634x418.jpg 634w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-2022-846x558.jpg 846w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-2022-951x627.jpg 951w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-2022.jpg 1137w\" sizes=\"auto, (max-width: 320px) 85vw, (max-width: 768px) 67vw, (max-width: 1024px) 62vw,1024px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-10467 size-full\" src=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-row-2022.jpg\" alt=\"Balena celeriac harvested and laying in a row\" width=\"880\" height=\"492\" srcset=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-row-2022.jpg 880w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-row-2022-300x168.jpg 300w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-row-2022-768x429.jpg 768w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-row-2022-360x200.jpg 360w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-row-2022-105x59.jpg 105w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-row-2022-317x177.jpg 317w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-row-2022-423x236.jpg 423w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-row-2022-634x354.jpg 634w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-row-2022-846x473.jpg 846w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-row-2022-320x180.jpg 320w\" sizes=\"auto, (max-width: 320px) 85vw, (max-width: 768px) 67vw, (max-width: 1024px) 62vw,880px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-10468 size-large\" src=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-with-harvester-2022-1024x481.jpg\" alt=\"Harvest Balena celeriac size comparison to harvest knife\" width=\"1024\" height=\"481\" srcset=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-with-harvester-2022-1024x481.jpg 1024w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-with-harvester-2022-300x141.jpg 300w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-with-harvester-2022-768x361.jpg 768w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-with-harvester-2022-105x49.jpg 105w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-with-harvester-2022-317x149.jpg 317w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-with-harvester-2022-423x199.jpg 423w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-with-harvester-2022-634x298.jpg 634w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-with-harvester-2022-846x398.jpg 846w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-with-harvester-2022-951x447.jpg 951w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Balena-celeriac-with-harvester-2022.jpg 1100w\" sizes=\"auto, (max-width: 320px) 85vw, (max-width: 768px) 67vw, (max-width: 1024px) 62vw,1024px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Brilliant<\/strong> celeriac grown at 6\u201d and 12\u201d in-row spacings, respectively:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-10472 size-large\" src=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-6inches-1024x590.jpg\" alt=\"Harvested Brilliant celeriac laying in a row\" width=\"1024\" height=\"590\" srcset=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-6inches-1024x590.jpg 1024w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-6inches-300x173.jpg 300w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-6inches-768x442.jpg 768w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-6inches-105x60.jpg 105w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-6inches-317x183.jpg 317w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-6inches-423x244.jpg 423w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-6inches-634x365.jpg 634w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-6inches-846x487.jpg 846w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-6inches-951x548.jpg 951w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-6inches.jpg 1205w\" sizes=\"auto, (max-width: 320px) 85vw, (max-width: 768px) 67vw, (max-width: 1024px) 62vw,1024px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-10473 size-large\" src=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-12-inches-1024x501.jpg\" alt=\"Harvest Brilliant celeriac laying in the field to show size\" width=\"1024\" height=\"501\" srcset=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-12-inches-1024x501.jpg 1024w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-12-inches-300x147.jpg 300w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-12-inches-768x376.jpg 768w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-12-inches-105x51.jpg 105w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-12-inches-317x155.jpg 317w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-12-inches-423x207.jpg 423w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-12-inches-634x310.jpg 634w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-12-inches-846x414.jpg 846w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-12-inches-951x465.jpg 951w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Brilliant-celeriac-grown-at-12-inches.jpg 1100w\" sizes=\"auto, (max-width: 320px) 85vw, (max-width: 768px) 67vw, (max-width: 1024px) 62vw,1024px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Diamant<\/strong> celeriac grown at 6&#8243; and 12&#8243; in-row spacings, respectively:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-10474 size-large\" src=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-6-inches-1024x569.jpg\" alt=\"Harvested Diamant celeriac laying on top of row to show sizing\" width=\"1024\" height=\"569\" srcset=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-6-inches-1024x569.jpg 1024w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-6-inches-300x167.jpg 300w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-6-inches-768x427.jpg 768w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-6-inches-360x200.jpg 360w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-6-inches-105x58.jpg 105w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-6-inches-317x176.jpg 317w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-6-inches-423x235.jpg 423w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-6-inches-634x352.jpg 634w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-6-inches-846x470.jpg 846w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-6-inches-951x528.jpg 951w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-6-inches.jpg 1141w\" sizes=\"auto, (max-width: 320px) 85vw, (max-width: 768px) 67vw, (max-width: 1024px) 62vw,1024px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-10475 size-large\" src=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-12-inches-1024x768.jpg\" alt=\"Harvest Diamant celeriac laid out to show sizing\" width=\"1024\" height=\"768\" srcset=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-12-inches-1024x768.jpg 1024w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-12-inches-300x225.jpg 300w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-12-inches-768x576.jpg 768w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-12-inches-105x79.jpg 105w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-12-inches-317x238.jpg 317w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-12-inches-423x317.jpg 423w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-12-inches-634x476.jpg 634w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-12-inches-846x635.jpg 846w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-12-inches-951x713.jpg 951w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-12-inches-1268x951.jpg 1268w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-12-inches-500x375.jpg 500w, https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Diamant-celeriac-grown-at-12-inches.jpg 1320w\" sizes=\"auto, (max-width: 320px) 85vw, (max-width: 768px) 67vw, (max-width: 1024px) 62vw,1024px\" \/><\/p>\n<p>&nbsp;<\/p>\n<h3>Acknowledgements<\/h3>\n<p>This work was supported by the University of Maine Cooperative Extension, University of Maine Agricultural and Forestry Experiment Station Hatch ME0-22320, the Maine Vegetable and Small Fruit Growers Association, and the New England Vegetable and Berry Growers Association. Bejo Seeds generously donated materials for this project. We are grateful for assistance from Greg Koller and Patricia McManus, and field assistants Jonathan Brenner, June Foyt, Ethan Handley, Lydia Handley, Lee Lavoie, Abigail Lucas, Brooke Martin, and Karla Mendoza.<\/p>\n<p>For any questions or comments on this research, please contact Peyton Ginakes at <a href=\"mailto:peyton.ginakes@maine.edu\">peyton.ginakes@maine.edu<\/a> or Mark Hutton at <a href=\"mailto:mark.hutton@maine.edu\">mark.hutton@maine.edu<\/a>, or call 207.933.2100.<\/p>\n<hr \/>\n<h3>Download and Print:<\/h3>\n\n\t<div class=\"resource-embed post-template-resource pdf\" data-embedded-id=\"10487\">\n\n\t\t<div class=\"resource-icon pdf\"><span class=\"resource-type\">pdf<\/span><\/div>\n\n\t\t<div class=\"content-wrapper resource-wrapper\">\n\t\t\t<h1 class=\"post-title resource-title\"><a href=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2024\/02\/2022-Celeriac-Research-Report.pdf\" target=\"_blank\">Celeriac Research Report 2022 &#8212; PDF<\/a><\/h1>\n\n\t\t\t\t\t<\/div>\n\n\t\t<div class=\"modified-time resource-updated\">Updated<br><span>2.15.24<\/span><\/div>\n\n\t\t\t\t\t<div class=\"resource-button resource-download\"><a class=\"umaine-button\" href=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2024\/02\/2022-Celeriac-Research-Report.pdf\" target=\"_blank\">Download<span class=\"screen-reader-text\">Celeriac Research Report 2022 &#8212; PDF<\/span><\/a><\/div>\n\t\t\t<\/div>\n\t\n<hr \/>\n<p><em>Information on this website is provided purely for educational purposes. No responsibility is assumed for any problems associated with the use of products or services mentioned in this website. No endorsement of products or companies is intended, nor is criticism of unnamed products or companies implied.<\/em><\/p>\n<hr \/>\n<p><em>In complying with the letter and spirit of applicable laws and pursuing its own goals of diversity, the University of Maine System does not discriminate on the grounds of race, color, religion, sex, sexual orientation, transgender status, gender, gender identity or expression, ethnicity, national origin, citizenship status, familial status, ancestry, age, disability physical or mental, genetic information, or veterans or military status in employment, education, and all other programs and activities. The University provides reasonable accommodations to qualified individuals with disabilities upon request. The following person has been designated to handle inquiries regarding non-discrimination policies: Director of Equal Opportunity, 5713 Chadbourne Hall, Room 412, University of Maine, Orono, ME 04469-5713, 207.581.1226, TTY 711 (Maine Relay System).<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Peyton Ginakes, University of Maine Cooperative Extension Research Associate Mark Hutton, University of Maine Cooperative Extension Vegetable Specialist David Handley, University of Maine Cooperative Extension Small Fruit &amp; Vegetable Specialist A celeriac (Apium graveolens var. rapaceum) trial was conducted at Highmoor Farm in 2022. Celeriac, also sometimes called celery root, is similar to stalk celery, [&hellip;]<\/p>\n","protected":false},"author":201,"featured_media":0,"parent":9954,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"templates\/page-withsidebar.php","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-10424","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Celeriac Evaluation: 2022 Research Report - Cooperative Extension at Highmoor Farm - University of Maine Cooperative Extension<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/extension.umaine.edu\/highmoor\/resources-by-crop\/celeriac\/evaluation-2022-research-report\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Celeriac Evaluation: 2022 Research Report - Cooperative Extension at Highmoor Farm - University of Maine Cooperative Extension\" \/>\n<meta property=\"og:description\" content=\"Peyton Ginakes, University of Maine Cooperative Extension Research Associate Mark Hutton, University of Maine Cooperative Extension Vegetable Specialist David Handley, University of Maine Cooperative Extension Small Fruit &amp; Vegetable Specialist A celeriac (Apium graveolens var. rapaceum) trial was conducted at Highmoor Farm in 2022. Celeriac, also sometimes called celery root, is similar to stalk celery, [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/extension.umaine.edu\/highmoor\/resources-by-crop\/celeriac\/evaluation-2022-research-report\/\" \/>\n<meta property=\"og:site_name\" content=\"Cooperative Extension at Highmoor Farm\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-30T16:09:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Celeriac-figure-1-2022.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"990\" \/>\n\t<meta property=\"og:image:height\" content=\"1091\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/resources-by-crop\/celeriac\/evaluation-2022-research-report\/\",\"url\":\"https:\/\/extension.umaine.edu\/highmoor\/resources-by-crop\/celeriac\/evaluation-2022-research-report\/\",\"name\":\"Celeriac Evaluation: 2022 Research Report - Cooperative Extension at Highmoor Farm - University of Maine Cooperative Extension\",\"isPartOf\":{\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/resources-by-crop\/celeriac\/evaluation-2022-research-report\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/resources-by-crop\/celeriac\/evaluation-2022-research-report\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Celeriac-figure-1-2022-272x300.jpg\",\"datePublished\":\"2024-02-15T15:05:44+00:00\",\"dateModified\":\"2026-03-30T16:09:09+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/resources-by-crop\/celeriac\/evaluation-2022-research-report\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/extension.umaine.edu\/highmoor\/resources-by-crop\/celeriac\/evaluation-2022-research-report\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/resources-by-crop\/celeriac\/evaluation-2022-research-report\/#primaryimage\",\"url\":\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Celeriac-figure-1-2022.jpg\",\"contentUrl\":\"https:\/\/extension.umaine.edu\/highmoor\/wp-content\/uploads\/sites\/48\/2023\/10\/Celeriac-figure-1-2022.jpg\",\"width\":990,\"height\":1091,\"caption\":\"Figure 1. Celeriac trial at University of Maine\u2019s Highmoor Farm in Monmouth, ME at harvest on October 21, 2022 (121 days after transplanting).\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/resources-by-crop\/celeriac\/evaluation-2022-research-report\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/extension.umaine.edu\/highmoor\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Crop Resources\",\"item\":\"https:\/\/extension.umaine.edu\/highmoor\/resources-by-crop\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Celeriac\",\"item\":\"https:\/\/extension.umaine.edu\/highmoor\/resources-by-crop\/celeriac\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Celeriac Evaluation: 2022 Research Report\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/#website\",\"url\":\"https:\/\/extension.umaine.edu\/highmoor\/\",\"name\":\"Cooperative Extension at Highmoor Farm\",\"description\":\"Information you can use. 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