Browse on keywords: tillage fallow replacement
Search results on 05/21/13
8374. Peterson, G.A., E. McGee, D.G. Westfall, C.W. Wood, and L. Sherrod. 1990. Crop and soil management in dryland agroecosystems.. Technical Bull. TB90-1, Dept. of Agronomy, Colorado St. Univ., Fort Collins, CO.
A large-scale field experiment was established in 1985 at 3 eastern CO locations to examine alternatives to the traditional wheat-fallow cropping system. All new treatments used no-till instead of tillage intensive management. Rotations include wheat-fallow, wheat-corn-fallow, wheat-corn-millet-fallow, and perennial grass. After five years, the more intensive cropping was giving greater grain output, nitrogen use efficiency, and water use efficiency than the wheat-fallow system. Organic matter levels also appear to be increasing. The research is also examining each strip plot at three landscape positions: toeslope, sideslope, and summit.
9493. Peterson, G.A., D.G. Wood, and C.W. Wood. 1989. Crop and soil management in dryland agroecosystems.. Technical Bulletin TB893, Dept. of Agronomy, Colorado State University, Fort Collins, CO..
The general objective of the project is to identify dryland crop and soil management systems which will maximize water use efficiency of the total annual precipitation. Specific objectives: 1. Determine if cropping sequences with fewer and/or shorter summer fallow periods are feasible. 2. Quantify the relationship of climate (precipitation and evaporative demand), soil type and cropping sequences that involve fewer and/or shorter fallow periods. 3. Quantify the effects of long-term use of no-till managemment systems on soil structural stability, microorganisms and faunal populations of the soil and the organic N and P content of the soil, all in conjunction with various crop sequences. 4. Identify cropping or management systems that will minimize soil erosion by crop residue maintenance. 5. Develop a data base across climatic zones that will allow economic assessment of entire management systems.