Nutrient Management in Soybeans

(Male) Okay, my name is Dorivar Ruiz-Diaz, Soil Fertility and Alternative Management of the Department of Agronomy at Kansas State University. In the last few years, we’ve been working with the Kansas Soybean Commission to improve soil fertility and alternative management programs for soybean. One of the areas where we’ve been working more recently was focus on secondary micronutrients. A lot of the data that we’ve been getting has been already used by producers through meetings and Extension meetings. With my appointment of Extension, I have the opportunity to share a lot of this data with producers, so I think it already it already has, in terms of nutrient management for soybean, for many of the producers in Kansas. Something that we’ve been testing in recent years is the application of micronutrients to the seed in soybeans and how that may improve growth and yield and especially with high pH soils, conditions where micronutrients and secondary nutrients can be a limitation and places where we do see clearer the efficiency and we have seen a significant increase in yield, especially in situations of iron chlorosis, for example, in western Kansas which is a big factor, as more soybean is moving west and more acres are being established, especially under irrigation in western Kansas is really a big concern and in recent years, again, there has been a lot of increase of a number of acres in western Kansas and it’s usually high pH and iron chlorosis that can be a big challenge. We’ve been seeing a lot of benefit again, and especially in areas where we do have very high pH programs. We do see increases easily in the order from five to more than ten bushels per acre in yields. All other aspects that we’ve been also looking again, in those newer ground in western Kansas, for example, the use of micronutrients, especially nitrogen, in some of those cases, you know, correlation and the population of rhizomes in the soil not being established and again, a compliment in that with nitrogen fertilizers, for
example, can be a positive addition to the fertility program. We’re covering all the different types of managements, again, a lot of the most of the acres tend to me no-till for the most part, but again, we do have also conventional tillage in many parts of Kansas, so we are basically looking at all the different tillage systems. We are continuing especially with the micronutrients and secondary nutrients hopefully in the near future. There are a lot of things that we don’t know about, some of these nutrients, especially when it comes to the use of tissue analysis. The use some of the soil tests even, so I think we are developing a lot of new data that’s gonna be useful. A lot of information on secondary micronutrients is not available for Kansas and even in the U.S., we don’t have very much data, so all of this information, I think, is gonna be very useful to understand a little bit better. In terms of the outreach and the Extension component, I’m hoping also for producers to pay a little more attention to fertility programs for soybeans and make sure to provide all the, cover all the basics for getting the yield potential for soybeans, which I think in many cases, people maybe overlook, maybe more attention to other crops than soybeans, I think it needs a lot of attention when it comes to covering all the nutrient requirements.

 

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