Volume 5, Issue 3

Nutrient Application Based on Soil Testing – Quantification of nutrients of irrigated soils of Tadepalligudem Tehsil and fertilizer recommendation for paddy cultivars with special reference to zinc for end user applications.

Author

D. Madhava Sarma*, B. Venkata Rao, S. Seshumuthyalu, NVNB Srinivasa Rao, M.V.Lakshmi, B.Chakravarthi, P.S.S. Sravanthi and T.V.S. Padmavathi.

Abstract

Abstract:

Rice (Paddy) is the main cultivated crop in the Tadepalligudem Tehsil of Andhra Pradesh. Growth and yield of any crop depends on factors like soil fertility and nutrient availability from the soil, besides other soil properties. To know the soil characteristics of the study area, soil samples are collected and analyzed for physico-chemical characteristics like pH, EC, % OC, macronutrients(N,P,K) and micronutrients(Fe, Cu, Zn ,Mn, etc., by using Atomic Absorption Spectroscopy.) Of the 38 representative samples analysed, in 39% of the samples nitrogen level is high and in 19% phosphorus levels are high whereas in 6% of the samples potassium is to the higher side. It has been found that, in most of the soils zinc is below the critical value. According to recent studies, zinc deficiency in soils of Andhra Pradesh is further expected to increase from the current 49% to 63% by the year 2025 as most of the marginal soils are being brought under cultivation. Since several research studies have reported antagonistic effect between phosphorus and zinc, care must be observed while applying macronutrients in the paddy fields of the study area. Therefore it is proposed to advise the stake holders about the results obtained in this analysis so that they can apply the fertilizers according to the need only. Sincere efforts are going on to convince farmers about the use of fertilizers based on soil testing is a good practice. It is a practical tool for optimizing the use of fertilizers which leads to higher yields.

DOI

https://doi.org/10.62226/ijarst20160390

PAGES : 623-628 | 89 VIEWS | 42 DOWNLOADS

Download Full Article