Published in Scientific Papers. Series A. Agronomy, Vol. LXVIII, Issue 2
Written by Vedavyas Shivanand CHAVAN, Thangadurai DEVARAJAN, Sangeetha JEYABALAN, Pavitra CHIPPALAKATTI, Simran PANIGATTI, Poojashree Nagappa KUMMUR, Hanamanta DASAR, Smita SHINDE
Coastal soils are typically nutrient-dense, acidic and extremely saline. Synthetic N:P:K supplementation and biofertilizers are essential for paddy cultivation. Global warming causes the ozone depletion, creating a harsh agro-environment for crop plants and beneficial soil organisms. Physico-chemical analysis was carried out for the twenty-five soil samples collected from the paddy fields of Coastal Karnataka in the present study. The results of the soil experiment indicated that TMR3 (S2) was more acidic (4.06), and the pH was essentially supported by the extremely low amount of organic carbon material in the HK (S2) region (0.63%). With the exception of sulphur (S), which is less available and negatively correlated with other soil properties, it also exhibits a positive correlation with micronutrients (Ca, Mg, Zn, Cu, Fe, Mn and B). The highest content of macronutrients is nitrogen 502.00 kg/ac in the GSUK region, phosphate 27.30 kg/ac in the SK (S1), and potassium 402.66 kg/ac in the HUK region. The results indicate that the more acidic-saline soil is harmful to rice crops, and less beneficial to agriculture.
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