Published January 1973. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Good management practices are essential if optimum fertilizer responses are to be realized. The practices include use of recommended onion varieties, selection of adapted soils, weed control, disease and insect control, good seedbed preparation, proper seeding methods, and timely harvest. Because of the influence of soil type, climatic conditions, and...
Laboratory soil tests will help you develop
and maintain more productive soil and
increase crop production by providing
information on the available nutrient content of
your soil. Soil testing helps you select the
correct kind and amount of fertilizer and liming
material. Recommendations are based on the
results of fertilizer...