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Response of upland rice to phosphorus in an ultisol in the humid forest zone of West Africa

OAR@ICRISAT

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Relation http://oar.icrisat.org/3953/
http://dx.doi.org/10.1007/BF00749515
 
Title Response of upland rice to phosphorus in an ultisol in the humid forest zone of West Africa
 
Creator Sahrawat, K L
Jones, M P
Diatta, S
 
Subject Agriculture-Farming, Production, Technology, Economics
 
Description Phosphorus (P) deficiency is one of the major limiting factor for crop production in highly weathered soils in the
humid tropics. Field experiments were conducted for two years (1992 and 1993) to determine P response and
efficiencies of upland rice cultivars in an Ultisol, low in available P, in the forest zone of Cote d'Ivoire. The rice
cultivars tested were selected from a large number of entries tested earlier for acidity tolerance.
Grain yields of the cultivars were significantly increased by P application. There was little further response
in grain yield at higher rates than 60 kg P ha -1. The rice cultivars differed in agronomic and physiological P
efficiencies and the efficiencies were higher at lower rates of R The rooting depths of the cultivars were increased by application of P at the lowest application rate (30 kg P ha-1).The results suggest that P fertilization of soil acidity-tolerant upland rice cultivars can significantly improve the productivity of the ultisols.
 
Publisher Kluwer Academic Publishers
 
Date 1995
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/3953/1/FertilizerRes_41_11-17_1995..pdf
Sahrawat, K L and Jones, M P and Diatta, S (1995) Response of upland rice to phosphorus in an ultisol in the humid forest zone of West Africa. Fertilizer Research, 41 (1). pp. 11-17. ISSN 0167-1731