Browse on keywords: crop rotation tillage moisture
Search results on 09/21/18
4807. Nelson, A.L.. 1950. Methods of tillage for winter wheat.. WY Agr. Expt. Sta. Bulletin 300.
Fallow/winter wheat production decreased soil N by 33% in the top 6" over 35 years. Continuous cropping lost 24% of the soil N. Crop rotations using green manure every 4th year did not decrease the loss of soil N. Average winter wheat yields (bu/ac) over 34 years for 3 rotations were: oats/rye(GM)/winter wheat/corn - 12.9; oats/peas(GM)/winter wheat/corn - 12.7; fallow/winter wheat - 13.7; oats/corn/winter wheat/rye - 13.2; oats/corn/winter wheat/peas - 14.1; oats/corn/winter wheat/fallow - 13.2. It was observed that green manure took years to break down. Tillage with an eccentric one-way increased winter wheat yields 2 bu/ac over 10 years compared to plowing. The eccentric one-way conserved moisture. Continuous cropping resulted in winter wheat yields 55% of biennial yields following fallow. Soil moisture was 3-4% lower in October after continuous cropping versus fallow.
5585. Ramig, R.E. and L.G. Ekin. 1987. Fallow systems for semiarid eastern Oregon and Washington.. OR Agr. Expt. Sta. Special Report 797, p.34.
7857. Krall, J.L., T.J. Army, P.H. Post, and A.E. Seamans. 1965. A summary of dryland rotations and tillage experiments at Havre, Huntley, and Moccasin.. Montana Agr. Expt. Sta. Bull. 559.