Effect of Crop Specific Blended Fertilizers on Growth and Yield of Maize (Zea mays L.)
Arun, S., Soumya, T. M., Hugar, A. Y., Salimath, S. B., Sharanabasappa, S. D.
International Journal of Environment and Climate Change · pp. 357–366 · Published 19 Dec 2023
10.9734/ijecc/2023/v13i123691Abstract
A Field experiment was conducted during Rabi 2022-23 at Agricultural and Horticultural Research Station, Kathalagere, KSNUAHS, Shivamogga, to study the effect of crop specific blended fertilizers on the growth and yield of maize. The experiment was laid out in Randomized Complete Block Design with ten treatments replicated thrice. Nutrient composition of blended fertilizer used for basal application was 16:18:11:4:1 N:P2O5:K2O:S:Zn and for top dress was 27: 0:13 N:P2O5:K2O. The treatments T1, T2, T3 consisted of application of basal blended fertilizer @ 312.5, 412.5 and 515 kg ha-1, respectively and top dress blended fertilizer @ 237.5, 312.5 and 390 kg ha-1, respectively. Basal blended fertilizer @ 412.5 kg ha-1 + top dress of urea at 30 and 45 DAS (T4), Package of practice (PoP) through straight fertilizer (T5), PoP through complex fertilizer (T6), recommended dose through Urea, DAP, MOP and ZnSO4 + top dress of nano urea @ 0.4% at 30 and 45 DAS (T7), physical blending of Urea, SSP, MOP and ZnSO4 (16:18:11:4:1 N:P:K:S:Zn) for basal and Urea and MOP (27:0:13 N:P:K) for top dress (T8), farmers' practice (T9) and absolute control (T10). Among all treatments, the application of basal blended fertilizer @ 515 kg ha-1 + Top dress of blended fertilizer @ 390 kg ha-1 recorded the maximum plant height (222.4 cm), number of leaves (10.3 plant-1), total dry matter accumulation (285.86 g plant-1), cob length (21.31 cm), cob girth (18.31 cm), number of kernels per cob (516.57) and test weight (24.22 g) at harvest as compared to PoP through straight and complex fertilizer and absolute control. The same treatment recorded significantly higher kernel and straw yield (69.51 and 89.36 q ha-1, respectively) in comparison to other treatments but it was on par with T2, T5 and T6. The treatment T3 recorded 27.8 % higher yield compared to T9. In study area the application of basal blended fertilizer @ 515 kg ha-1 + Top dress of blended fertilizer @ 390 kg ha-1 is recommended to achieve higher growth and yield of maize.
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