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United States Department of Agriculture

Agricultural Research Service

Research Project: Hydrothermal Effects on Seed Germination and Emergence in the Context of Soil Properties and Climate Change

Location: Plant Germplasm Preservation Research Unit

Project Number: 3012-21000-014-11
Project Type: Specific Cooperative Agreement

Start Date: Jul 01, 2014
End Date: Jun 30, 2019

Objective:
The objectives of this research are to develop efficient laboratory techniques to assess hydrothermal requirements for germination and emergence; apply these techniques to measure hydrothermal response of grain-crop species; and improve crop models to more accurately predict the timing of cumulative germination and seedling emergence.

Approach:
This overall project consists of four components: 1. Application of existing osmotic water potential control systems for characterizing soil water availability; 2. Evaluation of hydrothermal germination and emergence response of diverse wheat, corn and sunflower seedlots as a function of soil texture, soil water potential, soil temperature and seeding depth; 3. Comparison of existing hydrothermal models with our hydrothermal model; 4. Improvement of existing ARS crop models for predicting cumulative germination and emergence in the field.

Last Modified: 12/22/2014
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