WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Monday, March 19, 2018


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Search results on 03/19/18

2898. Idaho Agr. Expt. Sta.. 1940. Annual Report. ID Agr. Expt. Sta. Bull. #236.
Borax gave yield increase in alfalfa on cut-over land in north Idaho - 50% yield increase in second year from a 40 lb/ac application.

5065. Patten, A.G.. 1982. Comparison of nitrogen and phosphorous flows on an organic and conventional farm.. M.S. Thesis, Dept. of Agronomy and Soils, WSU, Pullman, WA.
Two adjacent farms, one organically managed and the other conventionally managed, located in the Palouse region of eastern WA, were studied for 2 years. Soil organic matter, total N, extractable P, and extractable K tended to be higher in the top 30 cm of soil from the organic farm. Mineral nitrogen in the top 30 cm of soil from the conventional farm was higher than or equal to that of the organic farm. Average long-term changes calculated in soil N and P pools resulted in substantial deficits of 44 and 14 kg/ha/yr, respectively, for the organic farm and 23 and 5 kg/ha/yr for the conventional farm. However, nutrients deficits were not reflected in lower soil N and P levels in the plot area tested on the organic farm as compared to the plot area on the conventional farm.

6545. Smith, V.T.. 1948. Green manure crops for Idaho farms.. U. of Idaho Ext. Circ. #105.
Estimates legume N contribution and dollar value: alfalfa - 260 lb N, $40/ac; sweetclover - 160 lb N, $24/ac; clover - 140 lb N, $21/ac; peas/beans - 50lb N, $7/ac; green manure provides nitrogen, improved soil condition, organic matter; results from 10 yr experiment; grow legume seed for cash crop.

7841. Koala, S., J.R. Sims, H. El-Attar, and M. El-Halfawia. 1988. Phosphorus deficiency in semi-arid tropics and implications for grain legume production. p. 205-216.. IN: R.J. Summerfield (ed.). World Crops: Cool Season Food Legumes..

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