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Iron toxicity to rice in an acid sulfate soil as influenced by water regimes

OAR@ICRISAT

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Relation http://oar.icrisat.org/3923/
http://dx.doi.org/10.1007/BF02205934
 
Title Iron toxicity to rice in an acid sulfate soil as influenced by water regimes
 
Creator Sahrawat, K L
 
Subject Soil Science
 
Description The effects of two water regimes: Continuous flooding and flooding with soil drying on iron toxicity to rice in an acid sulfate soil was studied by continuously growing 7 crops of IR-32 rice in pots under the two water treatments. There was no plant growth upto the second crop under both water treatments due to iron toxicity. But there was good growth of rice under the continuous water regime from third cropping onwards, however, there was no growth of rice in the flooding with soil drying treatment even upto the seventh crop due to iron toxicity.
The results of the study bring out that keeping an acid sulfate soil flooded for a few weeks and then planting rice when iron in soil solution has dropped below toxicity level may be a possible management practice for lowland rice culture on such soils. Drying and reflooding an acid sulfate soil on the other hand aggravates soil acidity and keeps iron in solution in high amounts to be toxic to rice plant.
 
Publisher Kluwer
 
Date 1979
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/3923/1/Plant_and_Soil_51_143-144_%281979%29Iron_Toxicity.pdf
Sahrawat, K L (1979) Iron toxicity to rice in an acid sulfate soil as influenced by water regimes. Plant and Soil, 51 (1). pp. 143-144. ISSN 0032-079X