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International Journal of
Botany Studies
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VOL. 5, ISSUE 3 (2020)
Influence of fertility levels with and without gibberellin on growth and yield in winter sweet corn (Zea mays L. saccharata)
Authors
GC Mishra, K Avinash, SK Behera, KK Panda, R Gogada
Abstract
The field experiment was carried out at Campus Farm, M.S. Swaminathan School of Agriculture, Centurion University of Technology and Management, Paralakhemundi, Odisha, India during winter season of 2018-2019 in acidic sandy clay loam soil with low in available N and medium in available P2O5 and K2O and S. All together eight treatments combination comprised of four fertility levels of 100 % recommended NPK dose (120-60-60 kg NPK/ha), 100 % recommended dose of NPK+ 30 kg S/ha, 125 % recommended NPK dose and 125% recommended dose of fertilizer + 30kg S/ha were tested with gibberellin @ 200 ppm/ ha and without gibberellin in factorial randomized block design with three replications. Experimental results revealed that fertility levels significantly influenced all the crop growth parameters like plant height, number of leaves/ plants, leaf area index, plant biomass production and green cob yield. Application of 125% recommended dose of fertilizer + 30kg S/ha recorded the highest plant height (216.83 cm), number of leaves /plant (12.15), leaf area index (3.66) and dry matter production/plant (169.20 g) along with green cob yield (15.34t/ha). The foliar spraying of gibberellin @200 ppm/ ha had positive effect on plant height, leaf area index and biomass production while it failed to exhibit significant effect in number of leaves/ plants. Application of gibberellin @ 200 ppm/ha increased the plant height (211.75 cm), number of leaves/ plant (11.85), leaf area index (3.55), dry matter accumulation (160.58 g/plant) and green cob yield (15.04 t/ha) over no gibberellin. The interaction effect between fertility levels and gibberrelin was significant for plant height, leaf area index, dry matter accumulation and green cob yield but no positive interaction effect was noticed for number of leaves/ plants. The combined use of 125 % recommended dose of NPK and 30 Kg S/ ha with foliar spraying of gibbberellin @ 200 ppm /ha recorded the maximum plant height (226.00 cm), number of leaves/ plant (12.20), leaf area index (3.88) and dry matter production (181.34 g/plant) along with green cob yield (15.83 t/ha) compared to all other treatments.
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Pages:183-188
How to cite this article:
GC Mishra, K Avinash, SK Behera, KK Panda, R Gogada "Influence of fertility levels with and without gibberellin on growth and yield in winter sweet corn (Z<em>ea mays </em>L. saccharata)". International Journal of Botany Studies, Vol 5, Issue 3, 2020, Pages 183-188
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