PHOSPHORUS MANAGEMENT IN RABI NIGER (GUIZOTIA ABYSSINICA L. CASS) – FODDER SORGHUM (SORGHUM BICOLOR L. MOENCH) CROPPING SEQUENCE
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 5
Abstract
A field experiment was conducted during 2010-2011 and 2011-2012 on deep black soil of Navsari, Gujarat to study the Phosphorus management in rabi Niger (Guizotia abyssinica L. Cass) – Fodder Sorghum (Sorghum bicolor L. Moench) cropping system. Application of 20 kg P2O5 ha-1 from SSP with PSM recorded significantly higher grain yield (628, 766 and 697 kg ha-1), total P uptake (4.51, 5.65 and 5.08 kg ha-1) by Niger and available P status of soil (50.11 and 49.44 kg ha-1) after harvest of niger than control (no phosphorus) during both the years and remained at par with application of 10 kg P2O5 ha-1 from SSP + PSM. Similarly, application of 10 kg P2O5 ha-1 from SSP + 100 kg RP ha-1 + PSM preceding fodder sorghum recorded significantly higher green fodder yield of sorghum (368, 415 & 391 q/ha), available P status of soil (43.37 and 44.19 kg/ha) after harvest of fodder sorghum and net realization from niger-fodder sorghum cropping system (5915 and 39,109 /ha) over other treatments during both the years. Thus, it is evident that with respect to the economy in fertilizer use, a saving of 25 per cent RDF (20 kg N + 10 kg P2O5 ha-1) in fodder sorghum can be achieved under adequately fertilized niger-fodder sorghum cropping system.
Authors and Affiliations
VAISHALI H. SURVE
Keywords
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