June 30, 2011

Soybeans yellowing what are the causes?

A number of fields of soybean are showing a slight yellowing on the leaves, the reason for this could be due to the stressful growth conditions they are experiencing. “Many soybean fields are starting a rapid shoot growth phase.  Meanwhile, the root system, which in some instances has not developed very well, is not yet able to meet the increasing nutrient demands, causing what is likely a temporary nutrient deficiency,” Fernandez said.

Also the wetter than normal conditions are not helping, especially for the unhealthy soybean. “Temporary nutrient deficiencies can be observed when excess water in the soil depletes oxygen and builds up carbon dioxide levels.  Although oxygen is needed by roots to grow and take up nutrients, high carbon dioxide levels are toxic and limit root growth and activity,” Read more ...

This blog is written by Martin Little, The Global Miller, published and supported by the GFMT Magazine and the International Milling Directory from Perendale Publishers

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