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Kansas Agricultural Experiment Station Research Reports

2020

Soybeans

Articles 1 - 5 of 5

Full-Text Articles in Life Sciences

Tillage Study For Corn And Soybeans: Comparing Vertical, Deep, And No-Tillage, E. A. Adee Jan 2020

Tillage Study For Corn And Soybeans: Comparing Vertical, Deep, And No-Tillage, E. A. Adee

Kansas Agricultural Experiment Station Research Reports

Trends from a tillage study conducted since 2011 have shown no clear differences between tillage systems for either corn or soybeans in lighter soils under irrigation. One year out of seven years has shown a yield advantage for either corn or soybeans for any tillage system, which appears to be related to environmental conditions experienced during the season. Averaged across all years of the study, the treatments with deep tillage either every or every-other year had about 3% higher corn yields, and soybeans had up to a 3% yield increase with some form of tillage.


Southeast Kansas Crop Production Summary - 2019, G. F. Sassenrath, L. Mengarelli, J. Lingenfelser, X. Lin, E. Adee Jan 2020

Southeast Kansas Crop Production Summary - 2019, G. F. Sassenrath, L. Mengarelli, J. Lingenfelser, X. Lin, E. Adee

Kansas Agricultural Experiment Station Research Reports

This is a summary of the crop production conditions in southeast Kansas in 2019, and the results of the variety testing for corn, soybean, sorghum, sunflower, and wheat.


Effect Of Saltro Soybean Seed Treatment On Sudden Death Syndrome In Kansas In 2019, E. A. Adee Jan 2020

Effect Of Saltro Soybean Seed Treatment On Sudden Death Syndrome In Kansas In 2019, E. A. Adee

Kansas Agricultural Experiment Station Research Reports

Sudden death syndrome (SDS) is a disease caused by the soilborne fungusFusarium virguliforme. This fungus prefers wet conditions and thus is usually most severe in irrigated fields. SDS tends to be most severe on well-managed soybeans with a high yield potential. It also tends to be more prevalent on fields that are infested with soybean cyst nematode (SCN) or planted early when soils are wet and cool. Histor­ical yield losses from this disease are generally in the range of 1–25%. While there are differences in susceptibility between varieties, there are no varieties that are resistant to SDS. Fortunately, …


Effect Of Late Season Management Practices On Soybean Seed Filling And Yield, F. E. Baronio, I. A. Ciampitti Jan 2020

Effect Of Late Season Management Practices On Soybean Seed Filling And Yield, F. E. Baronio, I. A. Ciampitti

Kansas Agricultural Experiment Station Research Reports

For soybean (Glycine max[L.] Merr.), final seed yield is primarily explained by modifications in the seed number per unit area. However, changes in individual seed weight can contribute to variations in seed yield. Final seed weight is defined by the amount of biomass accumulated in seeds per day (i.e., rate of seed growth) and the duration of this phase (i.e., number of days for seed filling). During the seed filling period, the seed growth rate and the duration are sensitive to growing conditions. Thus, any limitation on resources availability (e.g., water, radiation, and nutrients) during this period can …


Weed Management And Soybean Yields As Influenced By Row Width And Post-Emergent Herbicide Application Timing, S. R. Duncan, E. A. Adee Jan 2020

Weed Management And Soybean Yields As Influenced By Row Width And Post-Emergent Herbicide Application Timing, S. R. Duncan, E. A. Adee

Kansas Agricultural Experiment Station Research Reports

Irrigated soybeans were grown in 2018 and 2019 at the Kansas River Valley Experi­ment Field near Rossville, KS. Soybeans were planted in 30-inch or 15-inch rows and a standard pre-emergent herbicide was applied. Planting dates were May 11 and June 4 in 2018 and 2019, respectively. The post-emergent herbicide was applied at approxi­mately 21 or 35 days following soybean planting (DAP). Weed control and crop injury were visually evaluated approximately every seven days following herbicide application. Yields, moisture, and test weights were calculated from the center two rows in 30-inch plots and four rows in 15-inch plots after combine harvest. …