Spring Wheat Response to Tillage System and Nitrogen Fertilization within a Crop–Fallow System
作者： Ardell D. Halvorson , Alfred L. Black , Joseph M. Krupinsky , Steven D. Merrill , Brian J. Wienhold
DOI: 10.2134/AGRONJ2000.922288X
关键词: Cultivar 、 Crop yield 、 Conventional tillage 、 Agronomy 、 Tillage 、 Cropping system 、 Crop 、 Biology 、 Minimum tillage 、 Mollisol 、 Agronomy and Crop Science
摘要: Spring wheat (Triticum aestivum L.) production in the northern Great Plains generally utilizes conventional tillage systems. A 12-yr study evaluated effects of system [conventional-till (CT), minimum-till (MT), and no-till (NT)], N fertilizer rate (0, 22, 45 kg ha -1 ), cultivar (Butte86 Stoa) on spring grain yields a dryland wheat-fallow rotation (SW-F). Butte86 with CT exceeded NT five out 12 years 0 22 applied, four applied. Stoa three no only one year Yields those year. Most years, MT equaled CT. Responses to tended be greatest when soil NO 3 -N was lowest. Positive yield responses fertilization occurred two Stoa; MT, NT, Stoa. Cultivars were not consistent their response fertilization. These results indicate that farmers can successfully produce SW-F using systems, but may slightly reduced compared systems some years.
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