Strategic Tillage Effects on Crop Yields, Soil Properties, and Weeds in Dryland No-Tillage Systems
نویسندگان
چکیده
Long-term no-till (NT) systems in the semiarid central Great Plains of United States require flexible management strategies to minimize impacts herbicide resistant (HR) kochia (Kochia scoparia L.) and tumble windmill grass (Chloris verticillata Nutt.) as well nutrient stratification on soil crop productivity. This study examined strategic tillage (ST) control HR weeds improve yields an otherwise long-term NT cropping system. Treatments were three rotations: (1) continuous winter wheat (Triticum aestivum (WW); (2) wheat-fallow (WF); (3) wheat-grain sorghum (Sorghum bicolor L.)-fallow (WSF); main plots. Subplots reduced (RT), NT, ST NT. Results showed RT treatments provided significant weeds. Soil water content at planting was significantly less with compared or ST. Strategic did not affect grain yields, but decreased by 15% Increasing intensity yields. bulk density had no effect aggregate size distribution mean weight diameter (MWD) though proportion large macroaggregates MWD. Similarly, organic carbon (SOC) nitrogen (N) concentrations. phosphorus (P) different among increased potassium (K) concentration near surface. The SOC, MWD, micronutrient availability greatest WW it lower pH K concentration. Our results suggest could provide a mitigation option for little impact properties.
منابع مشابه
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ژورنال
عنوان ژورنال: Agronomy
سال: 2021
ISSN: ['2156-3276', '0065-4663']
DOI: https://doi.org/10.3390/agronomy11040662