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Liquid manure as a grassland fertilizer. III. The effect of liquid manure on the yield and botanical composition of pasture, and its interaction with nitrogen, phosphate and potash fertilizers

Published online by Cambridge University Press:  27 March 2009

A. D. Drysdale
A. D. Drysdale
Affiliation:
The Hannah Dairy Research Institute, Ayr
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Extract

1. In an experiment conducted for the 3 years 1961-63 on a perennial rye-grass and white clover sward a split-plot design was used to investigate the effects of liquid manure (cow urine + water) and its interactions with various levels of nitrogen, phosphate and potash fertilizers on the yield of herbage and on the botanical composition of the sward.

2. On the average the liquid manure contained 0.26% N, 0.44% K and had a pH of 8.6.

3. The liquid manure treatments supplied 0, 50, 100, 200 and 400 lb. N/acre/year and 0, 87, 174, 349 and 697lb. K/acre/year. The fertilizer nitrogen treatments were 0, 100 and 200lb. N/acre; the potash treatments 0 and 166 lb. P/acre and the phosphate treatments 0 and 66lb. P/acre.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 65 , Issue 3 , December 1965 , pp. 333 - 340
Copyright
Copyright © Cambridge University Press 1965

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