Update:
Ending Report for Kansas Soybean Commission. April 15, 2023
The Technology, Including Traits and Inputs Needed to Produce a Modern Soybean Crop.
James H. Long Ph.D.
Activity for the three years ending, April 15, 2023, in the project includes land preparation, fertilization, herbicide application and planting of plots. Development of methods such as in crop, disease and insect models has begun. Irrigated plots were planted the last week of April, wth adequate stands. Non-irrigated soybean were planted in late May to moisture. Both non-irrigated and Irrigated soybean were planted with a plot grain drill in 7-inch rows. Weather patterns showed both historical drought and flood during this 3 year period and we had both very poor and excellent yields. Insects began to show up in numbers in trap/sentinel crops and light traps in July with leaf feeding insects and Septoria leaf disease making first appearance at that time. Soybean pod worm eggs began to show up in a few sentinel plots, with frogeye leaf spot showing in August. In mid August, damage to soybean pods from soybean pod worm began to occur in scattered fields. By August 15, moderate damage appeared and treatment was made to all plots receiving both insecticide. Frogeye leaf spot was occurring on approximately 10 percent of leaves (bottom of canopy) with 20 percent leaf coverage. Black light traps and sentinel plots both showed increased insect activity during this time. Insecticides used included carbaryl, and Bacillus thuringiencis, while no fungicides were used, as no disease reached treatment levels in these years.
View uploaded report 