Non Technical Summary
To remain economically viable in today's global soybean market, U.S. growers must continue to adapt new technology and utilize crop and pest management tools to diagnose and manage crop and pest related issues. The need for integrating crop and pest management disciplines in soybean research is more evident today than in years past. Increased soybean seed cost coupled with new seed-applied technologies have soybean growers asking what is the minimum seeding rate needed to maximize crop yield and economic return. Furthermore, new pest related issues such as glyphosate resistant marestail, the soybean aphid, and soybean rust have increased grower input cost and increased the need for improved crop vigilance. My goal is to develop an integrated research program that addresses the new needs that Indiana soybean growers are facing.
Animal Health Component
Research Effort Categories
Goals / Objectives
Goal statement: The overall goal of this research program is to increase the economic and environmental sustainability of current soybean production practices through improved crop and pest management strategies and the development of accurate and timely crop and pest management decision aids. The specific objectives of my research program are: Objective 1: Develop accurate soybean crop and pest management recommendations that maximize economic return for growers. Objective 2: Characterize soybean phenotypic response to environmental conditions. Objective 3: Quantify the impact of agronomic production practices on Asian soybean rust.
Objective 1: Develop accurate soybean crop and pest management recommendations that maximize economic return for growers. Research will be conducted at Purdue Agricultural Centers (PACs) to quantify the impact of intensive soybean management practices on soybean yield and economic profitability. Treatments will range from the conventional management strategy of seeding, no scouting, and one application of glyphosate to "intensive" management strategies that include utilization of seed-applied technology, frequent scouting, and the application of foliar nutrients and pesticides. Data to be collected will be specified by research faculty within each discipline and reported at the system level. Objective 2: Characterize soybean phenotypic response to environmental conditions. Research will be conducted at a number of Purdue Agricultural Centers to quantify the impact of crop stress on soybean crop phenology. A partial list of treatments to be investigated includes
location (e.g. soil type, yield potential, etc.), crop stress and yield compensation mechanisms (e.g. defoliation, crop stand loss, etc.), planting date (early, on-time, late), and maturity group (range 2.4 to 4.4). The data collected will include LAI, PAR, phenological development rate, soybean yield and yield components. These experimental sites are located near automated weather stations that collect several climatic parameters including temperature, rainfall, photoperiod, and solar radiation. Additional research projects will be initiated as needed in the greenhouse and growth chamber to complement the in-field research. Objective 3: Quantify the impact of agronomic production practices on management of Asian soybean rust. Large plot experiments will be conducted at three Purdue Agricultural Centers (SEPAC, Davis, and NEPAC) to quantify the impact of row spacing and fungicide application timing on spray canopy penetration. The row spacing treatments are 30", 15", 7.5", and 7.5"
with tram lines. The application timing treatments are R1, R3, R5, R3 + R5, R1 + R3 + R5, and an untreated control. At each application timing spray cards will be positioned at different heights within the soybean canopy to measure fungicide coverage. Small plot experiments will be conducted at several PACs to quantify the impact of planting date (early and on-time), maturity group (2.7 to 3.9), and fungicide application timing (R1, R3, R5, and untreated) on soybean yield and yield components. Similar experiments will be conducted at SEPAC and SWPAC to characterize the impact of fungicide application timing on soybean yield and yield components in double crop soybean production systems.