Life Sciences Commons^™

Effects Of Flue Gas Desulfurization Gypsum On Crop Yield And Soil Properties In Kansas, Deann Presley

Kansas Agricultural Experiment Station Research Reports

Flue gas desulfurization (FGD) gypsum was recently approved for use in Kansas as a sulfur (S) fertilizer and as a soil amendment. Gypsum has been known as an effective product used in remediation of sodic soils, as the calcium (Ca) can exchange with sodium (Na) on the cations on clay particles. Marketing efforts have promoted the use of FGD gypsum on non-sodic soils as a means of improving soil health. Two 3-year study sites were established in Kansas in 2013, and no yield effects were observed for any of the site years. Treatment differences for grain quality and soil chemical …

Soybean: Evaluation Of Inoculation, I. A. Ciampitti, Eric Adee, J. Kimball, G. I. Carmona

Kansas Agricultural Experiment Station Research Reports

A soybean crop can obtain up to 50 to 75% of its nitrogen (N) requirements from the air when the biological fixation is effectively established (Pedersen, 2007). The overall objective of this project was to quantify the response to inoculation for soybean in a field without previous history of this crop. Following this rationale, a field study was conducted during the 2015 growing season at Ottawa (east central Kansas). The treatments consisted in five different N management approaches: non-inoculated, inoculated × 1, inoculated × 2, inoculated × 3 and non-inoculated but fertilized with 300 lb N per acre as the …

Interaction Between Seed Treatment And Variety On Sudden Death Syndrome Symptoms And Soybean Yield, Eric Adee

Kansas Agricultural Experiment Station Research Reports

Sudden Death Syndrome (SDS) is a soybean disease that perennially limits yields in the Kansas River Valley (KRV). The presence of soybean cyst nematode (SCN) and saturated soils has been implicated in contributing to the severity of the disease. Selecting varieties with some degree of tolerance to SDS has been the primary cultural practice to reduce yield loss to SDS. Another tool to reduce yield loss to SDS has been made available to growers with the release of ILeVO seed treatment from Bayer CropScience (Research Triangle Park, NC). The potential benefit of ILeVO on varieties with different levels of tolerance …

High-Yielding Soybean: Genetic Gain × Fertilizer Nitrogen Interaction, I. A. Ciampitti, J. Kimball, Eric Adee, O. Ortez, G. I. Carmona

Kansas Agricultural Experiment Station Research Reports

The U.S. accounts for 35% of the global soybean production. Potential soybean yields are determined by the interaction of genotype, environment, and management practices (G × E × M). The question “Do high yielding soybean need to be fertilized with nitrogen (N)?” is still a valid one. The overall objective of this project is to study the contribution of N via utilization of varying N strategies under historical and current soybean genotypes. Two field experiments were conducted during the 2015 growing season at Ottawa (east central KS) and at Ashland Bottoms (central KS). Three soybeans varieties were used (1990s = …

Evaluating The Interaction Between Chelated Iron Source And Placement On Phosphorus Availability In Soybean, C. L. Edwards, D. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

In agriculture, chelating agents are used to supplement micronutrients, such as iron (Fe). However, little research has been conducted at the field-scale level to evaluate chelating agent effects on phosphorus (P). The objectives of this study were to evaluate three commercially available chelated Fe sources on early soybean growth and nutrient uptake. The study was conducted at six locations in 2014 and 2015. The experimental design was a randomized, complete block with a factorial treatment arrangement. The two factors included fertilizer source and fertilizer placement. The fertilizer sources were P only, EDTA-Fe, HEDTA-Fe, and one glucoheptonate product, Cee*Quest N5Fe758 (CQ-758), …

Tillage And Nitrogen Placement Effects On Yields In A Short-Season Corn/Wheat/Double-Crop Soybean Rotation, D. W. Sweeney

Kansas Agricultural Experiment Station Research Reports

(Abstract only. Link to: http://newprairiepress.org/kaesrr/vol1/iss4/2/) Article is nearly identical toTillage and Nitrogen Placement Effects on Yields in a Short-Season Corn/Wheat/Double-Crop Soybean Rotationpreviously published in Southeast Agricultural Research Center 2015.

Overall in 2014, adding nitrogen (N) improved average wheat yields, but different N placement methods resulted in similar yields. Double-crop soybean yields were unaffected by tillage or the residual from N treatments that were applied to the previous wheat crop.

Response Of Soybean Grown On A Claypan Soil In Southeastern Kansas To The Residual Of Different Plant Nutrient Sources And Tillage, D. W. Sweeney, Philip Barnes, Gary Pierzynski

Kansas Agricultural Experiment Station Research Reports

(Abstract only. Link to: http://newprairiepress.org/kaesrr/vol1/iss4/3/) Article is nearly identical toResponse of Soybean Grown on a Claypan Soil in Southeastern Kansas to the Residual of Different Plant Nutrient Sources and Tillage, previously published in Southeast Agricultural Research Center Reports 2015.

The residual effects of turkey litter and fertilizer amendments applied in previous years had little effect on the yield, yield components, and dry matter production of the following soybean crop grown in 2014.

Response Of Soybean Grown On A Claypan Soil In Southeastern Kansas To The Residual Of Different Plant Nutrient Sources And Tillage, D. W. Sweeney, Philip Barnes, Gary Pierzynski

Kansas Agricultural Experiment Station Research Reports

The residual from previous high rate turkey litter applications, which were based on N requirements of the previous grain sorghum crop, increased soybean yield above that obtained from the residual of P-based turkey litter applications (low rate), commercial fertilizer, or the control. Even though early soybean growth was not significantly affected by residual treatments, the greatest dry matter production at the R6 growth stage was where the N-based litter had been applied and incorporated.

2015 Soybean Production In Southeast Kansas, Gretchen Sassenrath, I. A. Ciampitti, D. E. Shoup, X. Lin

Kansas Agricultural Experiment Station Research Reports

Crop performance and yield varies as a function of the growing environment and soil properties within the field. Optimal soybean planting in southeast Kansas usually occurs from mid-May to mid-June for full-season or late-June to early-July for doublecropped soybean. Planting is timed to capture fall rains and cooler temperatures during critical periods of bean development and yield formation and avoid mid-summer heat and drought. Changing planting configuration (row spacing and plant population), timing of planting, and cultivar selection are methods of optimizing soybean production for different growing environments.

2015 Crop Performance In Southeast Kansas, Gretchen Sassenrath, Jane Lingenfelser, L. Mengarelli, X. Lin

Kansas Agricultural Experiment Station Research Reports

Crop variety testing determines the production potential of newly released crop cultivars in Southeast Kansas. The genetic potential is moderated by environmental conditions during the growing season as well as soil productive capacity.

Breaking Soybean Yield Barriers: A Cropping Systems Approach, I. A. Ciampitti, G. R. Balboa

Kansas Agricultural Experiment Station Research Reports

During 2015, four soybean research trials were conducted in dryland and irrigated environments. Two trials were at Scandia, KS, and two were in Topeka, KS. The objective of these trials was to study the contribution of different farming systems to developing efficient and high-yielding soybean production systems. Each experiment had five treatments: common practices (CP), comprehensive fertilization (CF), production intensity (PI), ecological intensification (CF + PI), and advanced plus (AD). Under dryland and irrigation EI and AD treatments had the maximum yield in both locations. Under irrigation, yield gap was the largest as compared to the dryland environment in both …

Sudden Death Syndrome And Soybean Planting Date, Eric Adee, C. R. Little, I. A. Ciampitti

Kansas Agricultural Experiment Station Research Reports

The effect of soybean planting date on the severity of sudden death syndrome (SDS) and yield were evaluated in two studies at the Kansas River Valley Experiment Field in 2015. One study was established to promote SDS and the other to minimize SDS. In both studies the severity of SDS was greatest with the earlier planting dates, except for the more tolerant variety. The yield was greatest with the earlier planting date, except for the most susceptible variety. The severity of SDS was not as great as had been observed in previous years.