Iron deficiency caused two to three fold reduction in photosynthetic rate. leaf area specific leaf weight and total chlorphyll content in green gram Kondaveedu cultivar. The total dry matter increased proportionately as the Fe level increased in the medium. Variation was observed between green gram cultivars in Fe absorption and utilisation. LAM 88-4 was highly susceptible to Fe stress. CVS. PIMS-4 and ML 267 were moderately susceptible and RGG 79-1-12 and PS 16 were less susceptible and performed well under Fe stress conditions. The concentration of total Fe, Zn and Ma antogonistic to iron increased and orthophenanthorline Fe gave good index of chlorosis in green gram cultivars.
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Tamil Nadu Agricultural University
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Tamil Nadu, India.
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