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Methods for Red Clover Incorporation
Richard
Grant ObjectiveTo evaluate two different methods of killing and incorporating a red clover green manure crop. Location: Culdesac,
Idaho TreatmentsPlow-kill incorporation CommentsThe plots were 36 by 300 ft. Infiltration data for this test were reported in the 1993 Pacific Northwest On-Farm Test Results. Only the yield data and a summary of the soil test data will be presented here. For a more complete summary, contact the Nez Perce County, Idaho Extension Office. Data
ConclusionThere was a large amount of variation in the yield data, producing a high CV. The 25 bu/ac yield difference is not statistically significant unless the probability of a wrong conclusion is raised to 15% (LSD(15%) instead of LSD(5%)). The yield difference is consistently in favor of the plow treatment, and this hints that the plow-kill treatment might be proven to produce greater yields if this test had more replications or if the test were repeated. Soil test evaluations for the two red clover kill and incorporation methods indicate that macronutrients, micronutrients, organic matter and percent moisture content were higher in the plow-kill-incorporation method when compared to the herbicide-kill and incorporate method. It is likely that the higher nitrogen level at planting and throughout the growing season, coupled with higher water infiltration rate, moisture percentage, and nutrient levels accounts for the 25 bu/ac higher wheat yield and the 1.0 lb/bu test weight advantage for the plow killed incorporation method. This trial was an effective investigation of red clover plowdown management using on-farm test methods. |
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