EFFECTS OF SPLIT APPLICATION OF FERTILIZERS ON SOIL NUTRIENT TRANSPORT AND WATER QUALITY PARAMETERS UNDER LABORATORY CONDITIONS
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 50
Abstract
The study demonstrate the effects of split application of fertilizers on soil nutrient transport (i.e. Nitrogen (N), Phosphorus (P) and Potassium (K) at different slopes under simulated rainfall conditions and subsequent impact of nutrient transport on runoff water quality parameters were also assessed. The study was conducted on experimental plots under laboratory conditions by using a rainfall simulator to produce the desired range of rainfall intensities of 9.00 cm/h, 13.20 cm/h and 17.00 cm/h at two selected land slopes of 2.00% and 4.00%.The soil nutrients transport due to surface runoff were found higher on one-step application of fertilizer, followed by two step applications and three step application of fertilizer respectively under 9.00 cm/h, 13.20 cm/h and 17.00 cm/h rainfall intensities for selected land slopes. The rainfall intensity was found to have a principal factor affecting nutrient transport as compared to steepness of land for all selected split application of fertilizer. The observed values of electrical conductivity (EC) and pH of runoff water indicated a negative correlation with increase in steps of fertilizer applications. The scenario of three-step split application of fertilizers was found the most efficient method for Nutrient loss management.
Authors and Affiliations
SOURABH NEMA
Keywords
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