What Does Manganese Do For Soybeans

In fact research conducted by the ohio state university in 2008 and 2009 found that foliar applications of manganese fertilizer in the absence of foliar deficiency symptoms actually reduced soybean yields.

What does manganese do for soybeans. Eventually the leaves fall off. So for 2015 s corn crop he applied only manganese and left two check strips. Manganese has several very important roles in the plant including functioning as an activator or cofactor of at least 35 enzymes. Vyn said that additional research is needed to find just how much of a yield increase is possible by maintaining higher manganese levels especially during the reproductive stage of soybean development.

When soybeans are deficient in manganese brown spots appear between the leaf veins. It was his silver bullet this year. Manganese is part of the structure of an important antioxidant superoxide dismutase that protects plant cells by deactivating free radicals which can destroy plant tissue. When roots take up soil applied manganese ddp however the micronutrient is distributed throughout the whole plant.

He saw yield gains of 31 bushels per acre and 38 bushels per acre where he applied the manganese. Though manganese deficiency has been reported in glyphosate resistant soybeans in areas of the eastern corn belt minnesota research has not shown a benefit to soil or foliar applied manganese on soybean. Manganese is present in a wide variety of foods including whole grains clams oysters mussels nuts soybeans and other legumes rice leafy vegetables coffee tea and many spices such as black pepper 1 2 5 10 11. Manganese will not redistribute itself to new growth.

Since increasing the available manganese levels in the soil is difficult deficiency symptoms will reoccur in the same areas each year that soybeans are grown. We target a soil test level of 20 to 40 ppm on a midwest labs 6 inch soil test as a minimum level where manganese should be. Foliar application of one pound of actual manganese mn applied in 30 gallons of water per acre will alleviate deficiency symptoms. Prior research done at purdue shows that soybean fields with too little available manganese can result in a yield loss up to 12 bushels an acre.

Drinking water also contains small amounts of manganese at concentrations of 1 to 100 mcg l. It is well documented that certain cations including mn can reduce the performance of glyphosate when the cations are present in water used as a carrier. Research in minnesota has shown that soybeans do not respond to the application of other nutrients in a fertilizer program. Most of the manganese used by plants.

A foliar application supplies the important micronutrient to the part of the plant that is sprayed. The leaves also crinkle and cup downward.