A STUDY ON SEASONAL VARIATIONS OF PHYSICO-CHEMICAL CHARACTERISTICS OF SOIL SAMPLES WITH CHEMICAL FERTILIZER RESIDUES UNDER DIFFERENT CROPPING PATTERNS
Publication Date : 05/05/2015
The physico-chemical characteristics of soil samples from agricultural fields of Hunsur taluk were analyzed for seasonal variations. The seasonal variations of main soil characteristics were studied under different cropping pattern in the agricultural lands of Hunsur taluk. The soil samples were collected during rainy, winter and summer seasons from 15 different agricultural lands and were analyzed for different physico–chemical characteristics and chemical fertilizer residues. From the study, it was concluded that, in all the soil samples, urea and DAP residues were detected. The pH of soil samples were found to be neutral to alkaline in nature and the ions like calcium, magnesium, sodium and potassium were found to vary during all the seasons. Most of the ionic content was found to be decrease during winter season. The total nitrogen and ammoniacal-nitrogen content were found to be higher in all the seasons. Key Words: Urea, DAP, Soil Characteristics, Cropping pattern.
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