PhD

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Browsing PhD by Author "Arulnandhy, V."

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    Pre and post-harvest deterioration of Soybean (Glycine Max. L. Merril) seed under dry zone conditions of Sri Lanka
    (University of Peradeniya, 1987) Arulnandhy, V.
    Great potential exists for increased soybean (Glycine max (L.) Merrill) production in Sri Lanka and other countries in the tropics. Constraints among tropical regions differ, but the production of quality seed under sub-optimal field conditions and maintenance of viability and vigour of seed during storage are common, critical problems for most regions. An investigation, comprising a series of experiments, relevant to pre - and post-harvest deterioration of soybean seed was performed at the Agricultural Research Station in MahaIlluppallama. Seed viability and vigour, collectively determining seed quality or seed deterioration, were closely studied through germination tests conducted under near optimal and stress conditions. Maximum Quantity of the best quality seed was produced from plantings made In the first week of May and June under favourable climatic conditions in the field at seed maturation, particularly daily mean temperature of nearly 28°C and daily maximum relative humidity of nearly 75%". Significant Inverse relationship between seed quality end these climatic factors was evident, of which daily mean temperature was found to be more effective, A short term moisture stress of 7 days from need initiation to late seed development stage caused a significant reduction in seed quality but the greatest reduction was felt at seed Initiation find seed reaching full size. Foliar application of fungicides benomyl (Methyl 1 - (butyl carbomyl) - 2 benzimedazol carbomate) and canton (U