Winter wheat response to water and nitrogen in the North American Great Plains
1988
(Robert J.)
A unique, identical experiment was conducted at 5 locations in the North American Great Plains, from Alberta, Canada to Texas, U.S.A., in 1985 and 1986, to investigate the response of winter wheat (Triticum aestivum L.) to water and nitrogen fertility treatments under these climatic regimes. The experimental design consisted of 4 nitrogen levels, 3 irrigation regimes, 2 cultivars, with 4 replications. One cultivar, Colt, was common to all locations. Crop response throughout the growing season was monitored by intensive plant sampling, measuring spectral reflectance, evaluating canopy temperature, and by detailed measurements of the microclimate and of soil water content. This paper discusses the procedures common to all locations. The papers which follow in this issue present the results of these experiments, each paper treating a different aspect of the experiment across locations.
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