WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Saturday, September 22, 2018

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2607. Hilander, S. (ed.). 1989. Proceedings of AERO's soil building cropping systems conference. December 7-9, Lewistown, MT. AERO, 44 N. Last Chance Gulch #9, Helena, MT 59601.
Summarizes the talks given at the conference. Much information is from Canadian researchers in Saskatchewan who are working on low water use legumes as fallow replacements.

3329. MacRae, R.J. and G.R. Mehuys. 1985. The effect of green manuring on the physical properties of temperate-area soils.. Advances Soil Sci. 3:71-94.
This is a review chapter focusing on the non-nutrient benefits of green manures (e.g. soil physical improvement, particularly for corn in temperate climates. Organic matter plays more of a role in aggregate stability than in aggregate formation. This occurs through the by-products of organic matter decomposition (microbial gums and mucilages). Low-N green manures (1.5% N or less) generally are more effective in building organic matter levels. While sweeping conclusions are difficult, the benefits of green manuring on crop yield are most apparent during dry periods, particularly in rainfed production systems.

4510. Miller, P.R., W.L. Graves, and W.A. Williams. 1989. Covercrops for California agriculture.. Publication 21471, Div. of Agriculture and Nat. Res..
The potential use of cover crops in annual and perennial cropping systems in CA is described. The booklet includes annual and perennial legumes, cereals, crucifers, grasses, and mixtures. Data illustrating the benefit of cover crops on infiltration and soil organic matter are presented. Selection of proper crops is described. Seeding recommendations are presented.

6647. Steel, S. and D. Smith. 1990. Farming from the ground down.. Farm Journal (mid-January).
Discusses Terry Holsapple farming system in Illinois. Both P and K levels have risen several years after the last application of commercial fertilizer.

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