Agronomy Talk

16

Jan

2019

Agronomy Talk: Early-Season Compaction and Soybeans

Soil surface compaction can affect soybean plant height, root growth and development, pod set, and yield

Soil surface compaction can affect soybean plant height, root growth and development, pod set, and yield

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23

Oct

2018

Agronomy Talk: Tar Spot in Corn

Tar Spot is a new phenomenon in the US. It is caused by a fungus called Phyllachora maydis, native to Central America. Tar Spot had only been identified in very isolated geographies in the U.S. until the summer of 2018. In Central America, the yield-robbing form of Tar Spot forms a complex with two other plant pathogens, neither of which have been documented in the U.S. It is unknown whether the Tar Spot organism is forming a pathogenic complex with other species present in the Midwest. 

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17

Oct

2018

Agronomy Talk: Seed Quality in Soybeans

High rainfall and warm temperatures after maturity physically cause the soybean pod to swell and shrink. Any structural weakness in the pod from diseases or insect feeding will allow moisture into the pod where it affects the soybean itself. The pods then split open from the physical stress of swelling with moisture. Soybeans exposed to warm temperature and high moisture are also subject to germinating in the pod. All soybean varieties are susceptible to damage in exceptionally wet years. 

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