Browse on keywords: legume crop rotation weed
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2221. Goldstein, Walter A.. 1986. Alternative crops, rotations, and management systems for dryland farming.. Ph.D. dissertation, Agronomy and Soils, WSU.
This work covers a number of research areas, including the use of edible white lupine as an alternative crop, the use of black medic in rotation with spring peas and winter wheat (the PALS concept), performance of winter wheat as influenced by rotations, fertilization, and fumigation; rotational effects of medics; wheat interference with weeds; costs and returns of alternative systems; comparison of agronomic effects of conventional, organic, and biodynamic management. The PALS (perpetuating alternative legume system) concept was field-tested using a pea + medic - medic GM - winter wheat rotation with limited inputs of agrichemicals and tillage. This system was more economic using market prices of commodities at both a low and high yield level. With government support prices, the PALS system was competitive in the low yield situation, but not the high. Rotational effects appeared to suppress weeds in wheat with the medic compared to a continuous cereal system.
7028. USDA Soil Conservation Service. 1955. Joint Utah - Idaho Conservation Dryland Farming Guide.. .
Describes 3 basic rotations for the region: 1) grass/alfalfa - no more than 2 yr grain (Class IV land, precip. >17"); 2) grain - fallow - various rotations with alfalfa/grass or sweetclover depending on precip. (12-17"); 3) permanent grass/legume, with no more than 2 yr grain (precip 9-12", Class IV land); lists adapted grass and legume varieties; describes use of rotary hoe and skew treader for weed control. T: grass varieties.