1.0Cooperative Extension Publicationshttps://extension.umaine.edu/publicationsrich900600<blockquote class="wp-embedded-content" data-secret="fYSOfL2apw"><a href="https://extension.umaine.edu/publications/1085e/">Bulletin #1085, Potato Farmers in Aroostook County, Maine, Should Test for Soil pH and Calcium and Correct as Needed</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://extension.umaine.edu/publications/1085e/embed/#?secret=fYSOfL2apw" width="100%" height="338" title="“Bulletin #1085, Potato Farmers in Aroostook County, Maine, Should Test for Soil pH and Calcium and Correct as Needed” — Cooperative Extension Publications" data-secret="fYSOfL2apw" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); /* ]]> */ </script> Soil pH strongly influences the availability of soil nutrients to plants. The soils of New England tend to be acidic, so farmers long tried to maintain a low soil pH to protect potatoes from scab issues. More recently, with the release of the scab-resistant potato variety Russet Burbank, which is now commonly planted in Aroostook County, farmers growing Russet Burbank no longer maintain low pH. In fact, they are growing quality grains due to improved soil pH.https://extension.umaine.edu/publications/wp-content/uploads/sites/52/2018/05/1085-fig2.jpg948454