Vol. 7, Issue 6 (2019)
Characterization of rock phosphate enriched compost and its influence on growth parameters of finger millet-cowpea cropping system in southern dry zone of Karnataka
Author(s): Jagadeesha GS, Prakasha HC, Chamegowda TC, Krishna Murthy R, Yogananda SB and Mallesha BC
Abstract: A field experiment was conducted at Zonal Agricultural Research Station, VC Farm, Mandya during kharif 2017, summer 2018, kharif 2018 and summer 2019 to study the effect of rock phosphate enriched compost on growth parameters of finger millet-cowpea cropping system. Prior to initiation of the field experiment, three different composts viz., urban solid waste compost (USWC), vermicompost and farm yard manure (FYM) were enriched with rock phosphate at 5 per cent. Field experiment consisting of eleven treatment combinations comprising recommended N and K, and P through varied levels of enriched composts. The experiment was laid out in RCBD design with three replications and the test crops were finger millet and cowpea. The initial P2O5 of the experimental site was very high (133.58 kg ha-1). The results revealed that, the pH had decreased in rock phosphate enriched USWC (8.02) and vermicompost (6.78) compared to unenriched USWC (8.29) and vermicompost (6.84). With respect to phosphorus concentration, enriched USWC (2.87%), vermicompost (2.43%) and FYM (1.16%) were recorded higher than unenriched USWC (0.90%), vermicompost (0.82%) and FYM (0.28%). Similarly, all the major, secondary and micro nutrient concentration had more in enriched than unenriched compost. Treatment which received recommended N and K + 75 per cent P supplied through enriched USWC (T5) had significantly higher plant height in 30 DAT (37.84 cm), 60 DAT (92.83 cm) and at harvest (112.75 cm) in finger millet and higher plant in 30 DAS (27.00 cm), 60 DAS (67.98 cm) and at harvest (71.20 cm) in residual cowpea in pooled analysis. Similarly, number of tillers hill-1 in finger millet and number of branches plant-1 in residual cowpea in all the growth stages of the crop were also recorded significantly higher in T5 treatment.
Pages: 2838-2846 | 275 Views 103 Downloads
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How to cite this article:
Jagadeesha GS, Prakasha HC, Chamegowda TC, Krishna Murthy R, Yogananda SB, Mallesha BC. Characterization of rock phosphate enriched compost and its influence on growth parameters of finger millet-cowpea cropping system in southern dry zone of Karnataka. Int J Chem Stud 2019;7(6):2838-2846.
