<http://schema.org/description>
"This past winter at some of the fruit schools, I talked about the need to determine the nutrient status of your orchards through leaf analysis. Unlike vegetable crops, tree fruit and small fruit are not replanted every year and their roots are capable of absorbing nutrients any time the conditions are favorable. There is also a considerable amount of nutrient recycling. Nutrients in leaves that fall to the ground or brush that is cut from the trees and chopped in the orchard are recycled and made available again to the trees. Only a small portion of the nutrients are removed in the form of the fruit. Leaf analysis also can determine micronutrient levels in the tree. Soil tests for micronutrients are very difficult to validate.\r\n\r\n"^^<http://www.w3.org/2001/XMLSchema#string>
<http://extension.psu.edu/plants/tree-fruit/news/2011/leaf-analysis-time-is-approaching>