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- Title
Studies on the impact of rainfall and throughfall in soil nutrient enrichment.
- Authors
VELNACHIYAR, N.; PANNEERSELVAM, S.; SUBRAMANIAN, N. K.; DHEEBAKARAN, G. A.
- Abstract
Rainfall is a nature's gift carrying certain essential plant nutrients from atmospheric reactions. Rainfall contribute considerable amount of Nitrogen as equal parts of nitrate (NO3) and ammonical (NH3) forms and sulfur (SO4) for plant use. These nutrients in the rainfall had good impact in agricultural production during those days, when environmental conditions was better with less toxic substances in atmosphere. The throughfall, precipitation that drips from the foliage and runs down the boles of trees are substantially enriched with leached bio elements and which are mostly essential plant nutrients. Study during North East Monsoon 2015 (NEM) and Summer 2016 (SUM) inferred that, both the rainfall and through fall are potential source of plant nutrients and the amount of nutrients delivery varies with type of vegetation. It is quite interesting to note that the amount of nitrogen (both nitrate and ammoniacal form) delivered by rainfall and throughfall were worked out to nearly 33 and 68 kg/ha which is sufficient for the most of rainfed crops. Among the agro forestry tree species, throughfall from Azadirachta indica had higher N, K and Mg, throughfall from Casuarina equisetifolia had Ca which resulted in higher pH and EC, throughfall from Peltophorump terocarpum had P2O5 and Na and throughfall from Cassia fistula had more SO4.The study periods imputes collection, conservation and recycling of rainfall to sustain the productivity of crop, particularly rainfed agriculture.
- Subjects
RAINFALL; PLANT nutrients; NITROGEN in soils; CASSIA fistula; AGROFORESTRY
- Publication
Journal of Agrometeorology, 2017, Vol 19, p115
- ISSN
0972-1665
- Publication type
Article