However, they are also often extremely well-drained which leads to leaching of highly soluble nutrients like boron and nitrogen. These young soils are rich in minerals which become available over time providing phosphorus, potassium, and micronutrients. In central Washington, where most Washington orchards occur, the soils are generally relatively young (less than 12,000 years old). It is important to be familiar with the soils in your region to predict potential deficiencies. Know the Common Nutritional Needs for Your area and How to Best Determine Needs Monitor the nutrient management program.ฤก.Fertilize trees bassed on nutrient demand minus supply.Maintain optimal soil fertility levels.Know the common nutritional needs for your area.This publication will describe a strategy with five steps: There are many ways to create a tree fertility program. These tools are often more valuable when used together, when coupled with observations of the tree, and when results are monitored over time for trends. When considering tree nutrition, it is essential to start with standard soil and tissue diagnostics. Healthy trees need healthy roots to take up water and nutrients healthy soils to provide water, nutrients, and protection from plant pathogens sufficient water and exemplary horticulture. Written by: Bernardita Sallato, Extension Specialist, Agriculture and Natural Resources, Washington State University Tianna DuPont, Extension Specialist, Agriculture and Natural Resources, Washington State University David Granatstein, Sustainable Agriculture Specialist and Professor Emeritus, Washington State University. Tree Fruit Soil Fertility and Plant Nutrition in Cropping Orchards in Central Washington
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