Effect of different rejuvenation techniques and fertilization on sewan pasture in hot arid region of Rajasthan (Lasiurus sindicus)
DOI:
https://doi.org/10.59797/ija.v52i4.4950Keywords:
Economics, Energy relationship, Fertilization, Fodder yield, Rejuvenation techniques, . Sewan grassAbstract
A field experiment was conducted during 2005 and 2006 at Bikaner to evaluate the different rejuvenation tech- niques and sources of nutrient supplementation on the productivity of old sewan (Lasiurus sindicus L.) pastures. Stubbles burning treatment proved superior, recording maximum growth attributes, viz. number of tillersltussock, tiller height and tussock diameter, green fodder (7.75 and 9.49 Vha), dry matter (2.78 and 3.26 Vha), crude protein (230.0 and 276.1 kglha), NPK uptake, energy ratio (10.98), energy productivity (679 gIMJ), net returns (Rs 2,5631 ha), benefit : cost ratio (1.51), and residual soil available P (8.86 and 9.14 kglha), and available K (174.3 and 167.1 kglha) compared with other treatments. Among fertilization sources, 50% each through organic and inorganic source of plant nutrients (20 kg each NPK + 5 Vha sheep manure) being on a par with 100% inorganic sources re- corded higher growth attributes, viz. green fodder (7.66 and 9.37 tiha), dry matter 2.81 and 3.24 Vha, crude protein 243.7 and 281.3 kglha, NPK uptake, energy output (48,833 MJIha) gross returns (Rs. 7,573lha) and available N, P and K status. However, maximum net returns (Rs 3,035lha) were given by 100% application of inorganic sources. Rejuvenation of old sewan pastures through stubble burning and fertilized with 50% each organic and inorganic source of plant nutrients gave maximum biomass yield. However, 100% application of inorganic sources (40 kg each NPWha through chemical fertilizers) gave the most economical pasture-grass production.References
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