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020 _a971-22-0060-4
040 _aMX-TxCIM
082 0 4 _a95-130352
100 1 _aGarrity, D.P.
110 2 _aInternational Rice Research Conference. Los Banos, Laguna (Philippines). 1992
245 0 0 _aWhere do green manures fit in Asian rice farming systems?
260 _c1994
340 _aPrinted
500 _a1 ill.; 1 chart; 4 graphs; 17 ref. Summary (En) AIBA-SEARCA, College, Laguna 4031 - Philippines
520 _aProgress in adapting green manures (GMs) to Asia's changing rice production systems has been limited. Recent research has concentrated on the soil fertility implications of GMs, neglecting the socioeconomic and agronomic aspects that ultimately determine the feasibility and cost effectives of GM systems. Recognition, holistic evaluation, and extrapolation of areas where GMs have a comparative advantage over mineral fertilizer or other nonrice crops are needed. This paper reviews the strategy for including GMs in rice farming systems and develops a framework for analyzing the fit of soil- improving legumes across a range of ecological niches. Macroeconomic factors, such as oil prices and national policy, set the general framework. Other important factors determining the specific adaptation of GMs are the socioeconomic environment, farm-level economic and biophysical conditions, and AV: of appropriate GM species and production technology. The prognosis for soil-improving legumes is seen to follow two key possibilities: 1) multiple-use solutions where the GM also provides grain, fodder, or fuel; and 2) specificity of GMs to well-defined niches within the cropping system. Agronomic research in the hitherto neglected areas of species improvement, seed production, crop establishment, and pest management may expand the options for GMs in all niches. The complexity and scale of work require an international research effort that provides leadership, stimulates coordinated work, and involves sharing priority responsibilities among participating research institutions
546 _aEnglish
595 _aAC
650 1 7 _aCrops
_gAGROVOC
_2
_91069
650 1 7 _aFertilizers
_gAGROVOC
_2
_91111
650 1 0 _aFertilizing
650 1 0 _aGramineae
650 1 0 _aOrganic fertilizers
_91740
650 1 0 _aOryza
650 1 0 _aPlant products
700 1 _aBecker, M.,
_ecoaut.
773 0 _tLadha, J.K.; Garrity,-D.P. (eds.). International Rice Research Inst., Los Banos, Laguna (Philippines). Green manure production systems for Asian ricelands: selected papers from the International Rice Research Conference. Los Banos, Laguna (Philippines). IRRI. 1994. p. 1-10. Received Apr 1995. (UPLB Acc. no. 119007)
942 _cREP
999 _c5685
_d5685