Influence of Soil Test-Based Nutrient Refinement on Uptake and Soil Fertility of Rice
Journal Title: International Journal of Agriculture Innovations and Research - Year 2018, Vol 7, Issue 3
Abstract
A survey of paddy growing soils (50 surface soils) of northern transition zone was undertaken to study their fertility status which indicated that soils were acidic to slightly alkaline (pH-4.5-7.1), non saline (EC 0.06-0.48 dS m-1) with diverse available N (112-560 kg ha-1), P2O5 (8.40-59.80 kg ha-1) K2O (144-480 kg ha1) status. Majority of soils were low-medium–high (LMH) status of N, P2O5 and K2O, respectively. A field experiment was also carried out in predominant category of NPK status at Kalkeri village of Dharwad district to refine the existing fertilizer dose to paddy there were six treatments viz., T1 (RDF 100 : 50 : 50), T2 (STCR 157 : 108 : 79), T3 (125 : 50 : 43.75), T4 modified RDF1 (125 : 50 : 37.5), T5 modified RDF2 (150 : 50 : 25) and T6 modified STL (125 : 37.5 : 43.75). Among the treatments, T2 (STCR) recorded significantly higher grain yield (53.00q ha-1). Higher total uptake by paddy viz., N (204.77 Kg ha-1), P2O5 (38.48 Kg ha-1), K2O (266.35 Kg ha-1) and also higher residual soil available major nutrients status after harvest of crop.
Authors and Affiliations
Ms. Sree Gowri M, et al.
Keywords
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