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Nutrient Uptake of Four Spring Wheat Varieties Grown Under Varying Nitrogen Stress

Start Date: 2011
Principal Investigator: Daniel Kaiser
Organization: University of Minnesota, Department of Soil, Water, and Climate
Status: Complete

Background Info

For wheat, nitrogen (N) is a major yield-limiting factor that, when deficient, can reduce growth and yield. The reduced growth may also impact uptake of other plant nutrients. Plant varieties may also differ in timing and quantity of nutrient uptake, as well as the partitioning of these nutrients within the plant. This study examines nitrogen uptake and partitioning, and the effect on grain yield in hard red spring wheat. This data will help determine nutrient uptake and timing and the information provided to growers will assist in determining growth stage for nutrient application.

Objectives

Study the uptake and partitioning of macro- and micronutrients in spring wheat

Compare macro- and micronutrient uptake between four wheat varieties with varying yield and protein potentials

Study the uptake of plant nutrients in wheat varieties in the presence of nitrogen stress

Key Findings

There was significant correlation between N and other elements.

Varieties did differ in their nutrient concentration and uptake over the growing season. There were no varieties that had consistently higher concentrations for all elements.

Uptake of macro- and micronutrients tends to follow similar patterns. However, some elements such as boron (B) and copper (Cu) may delay their uptake until later in the growing season, while potassium (K) and calcium (Ca) were found to be at maximum levels near anthesis.

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