{"id":647,"date":"2017-07-11T15:02:32","date_gmt":"2017-07-11T15:02:32","guid":{"rendered":"https:\/\/extension.umaine.edu\/grains-oilseeds\/?page_id=647"},"modified":"2017-07-11T15:30:03","modified_gmt":"2017-07-11T15:30:03","slug":"2014-field-pea-variety-trial","status":"publish","type":"page","link":"https:\/\/extension.umaine.edu\/grains-oilseeds\/topics\/field-peas-grain\/2014-field-pea-variety-trial\/","title":{"rendered":"2014 Field Pea Variety Trial"},"content":{"rendered":"

Tom Molloy and Ellen Mallory, University of Maine Cooperative Extension<\/em><\/p>\n

2014 Field Pea Variety Trial (PDF)<\/a><\/p>\n

Introduction<\/h3>\n
\"“Salamanca”<\/a>
“Salamanca” field peas, the tallest variety at 49 inches on July 10. Photo by Tom Molloy.<\/figcaption><\/figure>\n

Interest in field peas in Maine stems from the need for viable rotation crops for organic grain production and from increasing demand for organic and non-GMO feed grains for dairy, chicken, and other livestock. Field peas can break small grain disease cycles, are grown with the same production equipment as small grains, and as legumes, fix all of the nitrogen required for the crop.<\/p>\n

We conducted two trials, in 2013 and 2014, to assess the feasibility of organic field pea production in Maine. Because field peas are normally grown in more arid climates, there is concern that our humid conditions could exacerbate disease and lodging issues. In addition, field peas are thought to be less competitive with weeds, which under organic production practices could negatively impact yields and cause an increase in the weed seed bank. Our 2013 trial investigated the practice of growing peas in mixes with barley or oats. See a complete summary of this trial<\/a>.<\/p>\n

In 2014, we conducted a variety trial at the University of Maine’s Rogers Farm in Old Town comparing 15 varieties of monocrop field peas (Table 1). All of the varieties were determinate, semi-leafless grain types, meaning they tend to be shorter and have more tendrils then forage type peas, which makes them less susceptible to lodging.<\/p>\n

Table 1. Varieties and suppliers for the 2014 field pea variety trial.<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Variety<\/th>\nSupplier (source)<\/th>\nCotyledon or
\nseed color<\/th>\n<\/tr>\n
Abarth<\/td>\nPulse USA<\/td>\nYellow<\/td>\n<\/tr>\n
AC Agassiz<\/td>\nMeridian seeds (Leo Vojto Glenham SD)<\/td>\nYellow<\/td>\n<\/tr>\n
AC Earlystar<\/td>\nMeridian seeds (Canterra Seeds)<\/td>\nYellow<\/td>\n<\/tr>\n
AC Thunderbird<\/td>\nMeridian seeds (NDSU)<\/td>\nYellow<\/td>\n<\/tr>\n
Bridger<\/td>\nLegume Logic (Great Northern Ag)<\/td>\nYellow<\/td>\n<\/tr>\n
Daytona<\/td>\nMeridian seeds (Leo Vojto Glenham SD)<\/td>\nGreen<\/td>\n<\/tr>\n
DS Admiral<\/td>\nPulse USA<\/td>\nYellow<\/td>\n<\/tr>\n
Jetset<\/td>\nMeridian seeds (NDSU)<\/td>\nYellow<\/td>\n<\/tr>\n
Korando<\/td>\nPulse USA<\/td>\nYellow<\/td>\n<\/tr>\n
Mystique<\/td>\nPulse USA<\/td>\nYellow<\/td>\n<\/tr>\n
Navarro<\/td>\nLegume Logic (Great Northern Ag)<\/td>\nYellow<\/td>\n<\/tr>\n
Nette<\/td>\nPulse USA<\/td>\nYellow<\/td>\n<\/tr>\n
Salamanca<\/td>\nLegume Logic (Great Northern Ag)<\/td>\nYellow<\/td>\n<\/tr>\n
Spider<\/td>\nLegume Logic (Great Northern Ag)<\/td>\nYellow<\/td>\n<\/tr>\n
SW Midas<\/td>\nPulse USA<\/td>\nYellow<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Methods<\/h3>\n

The previous crop at this site was conventional potatoes and the soil type was Melrose fine sandy loam. The field was harrowed two times prior to planting. No fertility was applied and the peas were inoculated with a pea\/lentil inoculant. The varieties were planted on May 9 with an Almaco small-plot cone seeder with 6.5-inch row spacing. The target plant density was 9 plants\/ft2<\/sup> or 390,000 plants\/acre. Plots were tine harrowed with a Lely weeder on May 29 when the peas were approximately 4 inches tall, and harvested on August 19 with a Wintersteiger small plot combine.<\/p>\n

Results and Discussion<\/h3>\n

Weeds<\/h4>\n

Timely planting, early vigorous growth, and tine weeding may have contributed to the overall excellent level of weed control found within the plots. Background weed pressure was high at this site, with common lambsquarters, redroot pigweed, and hairy galinsoga found in high numbers in the alleyways and plot edges. However, weed biomass in the plots, ranked visually at harvest, was very low for all of the varieties tested.<\/p>\n

Diseases<\/h4>\n

Diseases are a concern for peas and can cause yield loss at all growth stages. This is particularly true in Maine where average rainfall is much higher than in the arid regions where field peas are typically grown. Few diseases were noted up through flowering with the exception of Rhizoctonia<\/em>. This disease is a common root rot fungi found in soils and can attack susceptible plants at any growth stage. Small patches were noted at the beginning and throughout flowering, and the disease became more widespread as the plants started to dry down. No differences in Rhizoctonia<\/em> incidence or severity were noted among the varieties. White mold (Sclerotinia<\/em>) was found in the plots as the plants started to lodge.<\/p>\n

Plant heights and lodging<\/h4>\n

Plant height, taken on July 10, toward the end of flowering, averaged 46 inches for all varieties (Table 2). None were shorter than 42 inches, which is on the extreme end for these shorter stature varieties and most likely contributed to lodging. Varieties with the most severe lodging included Navarro, Nette, and, Spider, while Bridger, Mystique, and Salamanca showed the least lodging.<\/p>\n

Yield<\/h4>\n

Pea grain yields averaged 3517 lb\/acre for the trial and ranged from 2706 lbs\/acre for Navarre to 4426 lbs\/acre for Spider (See Table 2). While there is little historical yield information for dry peas in Maine, yields from these trials compare with with other major dry pea production regions, and with our 2014 results.<\/p>\n

Table 2. Days to flowering, flowering duration, plant height, lodging, test weight, and yield of field peas in 2014. Values that are underlined are the largest for that measure, and values that are bolded are not statistically different from the underlined value.<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
<\/td>\nDays to
\nflowering
\n(DAP†)<\/th>\n		Flowering
\nduration
\n(DAP)<\/th>\n		Plant
\nheight
\n(inches)<\/th>\n		Lodging
\n(0-9
\nscale‡)<\/th>\n		Test
\nweight
\n(lbs\/bu)<\/th>\n		Yield§
\n(lbs\/acre)<\/th>\n<\/tr>\n
Abarth<\/td>\n46<\/td>\n14<\/td>\n45<\/strong><\/td>\n6<\/td>\n61.0<\/td>\n3176<\/td>\n<\/tr>\n
AC Agassiz<\/td>\n48<\/td>\n22<\/td>\n44<\/strong><\/td>\n6<\/td>\n61.0<\/strong><\/td>\n3069<\/td>\n<\/tr>\n
AC Earlystar<\/td>\n52<\/td>\n18<\/td>\n46<\/strong><\/td>\n7<\/td>\n61.6<\/strong><\/td>\n4300<\/strong><\/td>\n<\/tr>\n
AC Thunderbird<\/td>\n53<\/td>\n17<\/td>\n43<\/strong><\/td>\n7<\/td>\n61.9<\/strong><\/td>\n3001<\/td>\n<\/tr>\n
Bridger<\/td>\n48<\/td>\n11<\/td>\n46<\/strong><\/td>\n4<\/td>\n61.3<\/strong><\/td>\n3623<\/strong><\/td>\n<\/tr>\n
Daytona<\/td>\n53<\/td>\n10<\/td>\n45<\/strong><\/td>\n8<\/strong><\/td>\n60.5<\/td>\n3211<\/td>\n<\/tr>\n
DS Admiral<\/td>\n52<\/td>\n10<\/td>\n48<\/strong><\/td>\n7<\/td>\n61.2<\/strong><\/td>\n4169<\/strong><\/td>\n<\/tr>\n
Jetset<\/td>\n52<\/td>\n10<\/td>\n44<\/strong><\/td>\n7<\/td>\n61.6<\/strong><\/td>\n3757<\/strong><\/td>\n<\/tr>\n
Korando<\/td>\n48<\/td>\n11<\/td>\n42<\/td>\n7<\/td>\n62.0<\/strong><\/td>\n4144<\/strong><\/td>\n<\/tr>\n
Mystique<\/td>\n52<\/td>\n18<\/td>\n46<\/strong><\/td>\n3<\/td>\n62.0<\/span><\/strong><\/td>\n3403<\/strong><\/td>\n<\/tr>\n
Navarro<\/td>\n46<\/td>\n14<\/td>\n47<\/strong><\/td>\n9<\/span><\/strong><\/td>\n59.9<\/td>\n2706<\/td>\n<\/tr>\n
Nette<\/td>\n48<\/td>\n11<\/td>\n43<\/strong><\/td>\n9<\/strong><\/td>\n62.0<\/strong><\/td>\n3709<\/strong><\/td>\n<\/tr>\n
Salamanca<\/td>\n52<\/td>\n10<\/td>\n49<\/span><\/strong><\/td>\n4<\/td>\n61.3<\/strong><\/td>\n3310<\/td>\n<\/tr>\n
Spider<\/td>\n52<\/td>\n10<\/td>\n48<\/strong><\/td>\n9<\/strong><\/td>\n61.6<\/strong><\/td>\n4426<\/span><\/strong><\/td>\n<\/tr>\n
SW Midas<\/td>\n48<\/td>\n11<\/td>\n45<\/strong><\/td>\n7<\/td>\n61.4<\/strong><\/td>\n3133<\/td>\n<\/tr>\n
Site average<\/td>\n50<\/td>\n13<\/td>\n46<\/td>\n7<\/td>\n61.3<\/td>\n3517<\/td>\n<\/tr>\n
LSD (0.05)<\/td>\n—<\/td>\n—<\/td>\n7<\/td>\n1<\/td>\n1.0<\/td>\n1011<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

† <\/strong>Days after planting
\n‡ <\/strong>0 = no lodging, 9 = severe lodging
\n§ Yield at 13.5% moisture<\/p>\n

Discussion<\/h3>\n

Results from our two years of trials are encouraging for the feasibility of dry pea production in Maine. Overall yields were good to excellent in trials. While diseases were more prevalent in 2014 than in 2013, the impact on yield was limited because the diseases were not widespread until the plants started to dry down. Sites (soil drainage) and weather conditions most likely contributed to differences in disease rates between years. In both years, peas proved to be very competitive with weeds. Lodging occurred in both years and was severe in many of the varieties in 2014. Lodging and ease of harvest continue to be a concern for dry pea production in Maine. In addition, deer damage was widespread in the 2014 trial and should be considered in areas with high populations.<\/p>\n

Variety trials will continue in 2015. Four to five varieties will be compared at the University of Maine Aroostook Farm in Presque Isle, the University of Maine Rogers Farm in Old Town, and on an organic farm in Benedicta as part of a SARE Farmer Grant project. At the latter two sites swathing will be investigated as a way to avoid lodging and speed up dry down.<\/p>\n","protected":false},"excerpt":{"rendered":"

Tom Molloy and Ellen Mallory, University of Maine Cooperative Extension 2014 Field Pea Variety Trial (PDF) Introduction Interest in field peas in Maine stems from the need for viable rotation crops for organic grain production and from increasing demand for organic and non-GMO feed grains for dairy, chicken, and other livestock. Field peas can break […]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":616,"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-647","page","type-page","status-publish","hentry"],"yoast_head":"\n2014 Field Pea Variety Trial - Cooperative Extension: Grains, Pulses & Oilseeds - 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\/grains-oilseeds\/topics\/field-peas-grain\/2014-field-pea-variety-trial\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2014 Field Pea Variety Trial - Cooperative Extension: Grains, Pulses & Oilseeds - University of Maine Cooperative Extension\" \/>\n<meta property=\"og:description\" content=\"Tom Molloy and Ellen Mallory, University of Maine Cooperative Extension 2014 Field Pea Variety Trial (PDF) Introduction Interest in field peas in Maine stems from the need for viable rotation crops for organic grain production and from increasing demand for organic and non-GMO feed grains for dairy, chicken, and other livestock. 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