Isotope-aided research in fruit and vegetable crops
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Society for Promotion of Horticulture
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In the realm of newly-emerging horticultural enterprises, some of the tracer-or isotope-related applications arehighlighted here. These include root activity studies on important fruit crops using soil injection of carrier-free 32P,factors affecting spatial temporal root activity distribution of fruit crops, appropriate time and method of applicationto achieve maximum use efficiency in fruit and vegetable crops using 15N- and 32P-labelled fertilizers. A model forstudying nutrient efficient cropping sequences and crop combinations in vegetable crops was also developed. Otheruses of radiation techniques in plant nutrition are: mobilization of P from mother plant to sucker in ‘Robusta’ banana,contribution of exogenous fertilizer source to phosphorus availability in citrus, internal dilution technique forcomparing sources not amenable to isotope labelling, determination of tree volume in fruit crops using isotopedilution technique, detection of unorthodox movement of nutrients upon direct feeding of nutrients to de-navelledbanana bunch, monitoring internal dynamics of water in spongy-tissue affected ‘Alphonso’ mango fruits, investigationson source-sink relationship in mango and some vegetable crops, identification of high water use efficient types using∇∇∇∇∇18O values in onion, etc. Scope of using tracer techniques in horticultural research is highlighted.
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Agrociencias