Browse on keywords: moisture water conservation
Search results on 05/18/13
7633. Willis, W.O. and A.B. Frank. 1975. Water conservation by snow management in North Dakota. p. 155-162. IN: Proc. Snow Management on the Great Plains, Bismark, ND, July 1975..
5622. Ramig, R.E., R.R. Allmaras and R.I. Papendick. 1983. Water conservation: Pacific Northwest. p. 105-124.. IN: H.E. Dregne and H.O. Willis (eds.). Dryland Agriculture. ASA Monograph 23..
Descriptions of tillage and summer fallow practices in 200-400 mm/yr precip. zones. Covers: fall, spring, summer tillages for summer fallow; weed control; time of planting. Also descriptions of conservation tillage practices in fallow such as stubble mulching, chemical fallow. Annual cropping is included and sections cover moldboard plowing, fall chiseling, cloddy seedbeds, no-till, slot mulching. T: precipitation and soil water storage for 3 tillages. Soil water evaporation rates.
6937. Unger, P.W., G.W. Langdale, and R.I. Papendick. 1988. Role of crop residues - improving water conservation and use. p. 69-100.. IN: W.L. Hargrove (ed.). Cropping Strategies for Efficient Use of Water and Nitrogen..
9460. Luebs, R.E.. 1983. Water conservation: Pacific Southwest. p. 125-136.. IN: Dryland Agriculture. Agronomy Monograph No. 23, Amer. Soc. Agron., Madison, WI..
Agricultural drylands of the Pacific Southweat are generally described as arid or semiarid. For discussion here, the Pacific Southwest includes the states of Arizona, California, Nevada, and that part of Utah south of an imaginary line extending from the southern Wyoming boundry to Nevada. Rainfall is below the threshold needed for dryland crop production over most of the fourstate area, and evaporation is high. Small grain cereals predominate as dryland crops in the Pacific southwest as they do in other areas of the western USA, although the particular cereals and varieties as well as growing season are different in the different seasons. Topics covered in the article are: Soils, Precipitation characteristics, Conservation of water from precipitation, Summer Fallow, Stubble Mulch, Water Harvesting, Terracing, Snowmelt control and Future Research.
9369. Greb, B.W.. 1983. Water conservation: central Great Plains. p. 57-72.. IN: Dryland Agriculture. Agronomy Monograph No. 23. Amer. Soc. Agron., Madison, WI..
Excellent progress in water conservation concepts and practices has been made in the last 25 years in the Central Great Plains. Much of this work has been concentrated on summer fallow. The easier means of filling water loss voids have been largely accomplished on experimental plots and to some degree in commercial dryland fields. Additional refinements in water management on all land sites in combination with continued improvement of plant varieties are needed to maximize water utilization.
9452. Larson, W.E., J.B. Swan and M.J. Shaffer. 1983. Soil management for semiarid regions.. Agricultural Water Management 7:89-114..
Water related climatic factors and soil physical and chemical properties exert a dominant effect on crop production in semiarid regions. Soil management practices which beneficially affect crop prodution by increasing water storage or through more efficient water use have been intensively studied at a number of locations with their associated soil conditions and under the climatic conditions encountered. The practical benefits of such research have been extensive. Computer-based simulation techniques permit the development of long and short term site specific soil management recommendations with expected results expressed on a probability basis. The research results from specific geographic locations measured under a specific set of climatic conditions can thus be generalized to a much wider range of soils and expressed on a probability basis using long-term climatic records. Examples are given where crop yield frequencies are computed as a function of long-term climatic conditions involving various management practices. These results illustrate the impacts of a range of residue management, deep tillage, and fallowing practices on crop production in the semiarid environment. The modeling techniques presented can be used with a range of models and potential management practices.