The role of tolerant genotypes and plant nutrients in the management of iron toxicity in lowland rice

Sahrawat, K L and Mulbah, C K and Diatta, S and Delaune, R D and Patrick Jr, Delaune and Singh, B N and Jones, M P (1996) The role of tolerant genotypes and plant nutrients in the management of iron toxicity in lowland rice. Journal of Agricultural Science, 126 (2). pp. 143-149. ISSN 0021-8596

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Abstract

Iron toxicity is a nutrient disorder associated with high concentrations of iron in soil solutions. Deficiencies of other nutrients, such as P, K, Ca, Mg and Zn, have been implicated in its occurrence in rice plants. Field experiments were carried out in 1992 and 1993 in Ivory Coast to evaluate the iron toxicity tolerance of promising rice cultivars available in West Africa, and to provide additional information for selecting breeding materials. Two sites, differing in their potential to cause iron toxicity, were used. Glasshouse and field studies were also conducted to test the role of other nutrients in the occurrence of iron toxicity. The results showed that genetic tolerance to iron toxicity can significantly improve rice production in iron-toxic soils, with some cultivars producing yields in excess of 5 t/ha. The application of N, P, K and Zn in the field decreased the uptake of iron in rice tops, and this can be a significant factor in the iron-toxicity tolerance of the cultivars.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Others > Food and Nutrition Others > Fertilizer Applications
Depositing User:	Mr Sanat Kumar Behera
Date Deposited:	01 Dec 2011 03:58
Last Modified:	01 Dec 2011 03:58
URI:	http://oar.icrisat.org/id/eprint/4585
Official URL:	http://dx.doi.org/10.1017/S002185960007307X
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Author

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