Long-Term Effects of Urea and Green Manure on Rice Yields and Nitrogen Balance

Author:

Ladha J.K.1,Dawe D.2,Ventura T.S.1,Singh U.3,Ventura W.1,Watanabe I.4

Affiliation:

1. Crop, Soil and Water Sciences Division; IRRI; MCPO Box 3127 1271 Makati City Philippines

2. Social Sciences Division; IRRI; Muscle Shoals AL USA

3. International Fertilizer Development Center; P.O. Box 2040 Muscle Shoals AL USA

4. 6-58-18, Jindaiji-Kita Chofu-shi Tokyo 182-0011 Japan

Publisher

Wiley

Subject

Soil Science

Reference25 articles.

1. Estimation of the nitrogen balance for irrigated rice and the contribution of phototrophic nitrogen fixation;App;Field Crops Res,1984

2. Nonsymbiotic nitrogen fixation associated with the rice plant in flooded soils;App;Soil Sci,1980

3. Parameters affecting residue nitrogen mineralization in flooded soils;Becker;Soil Sci. Soc. Am. J,1994

4. Bouldin , D.R. 1988 Effect of green manure on soil organic matter content and nitrogen availability 151 163 In Proceedings of a symposium on sustainable agriculture: Green manure in rice farming IRRI Manila, Philippines

5. Denitrification in soil1. Methods of investigation;Bremner;J. Agric. Sci,1958

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