Vol. 6, Issue 6 (2018)
Effect of different levels of irrigation and fertigation on growth, physiology, yield attributes and yield of intra hirsutum Bt cotton
Author(s): MY Shruti and YR Aladakatti
Abstract: A field experiment was conducted at Agricultural Research Station Dharwad, Karnataka, with randomized block design during kharif 2015-16 to assess the effect of different levels of irrigation and fertigation on yield of Bt cotton. The results revealed that all the growth and physiological parameters viz., total dry matter production per plant, leaf area index, leaf area duration, chlorophyll content in leaf and yield attributes viz., sympodial branches, bolls per plant and seed cotton yield per plant were enhanced by drip irrigation and fertigation levels and was found maximum at paired sowing with drip irrigation at 1.0 Etc recorded significantly higher seed cotton yield per hectare (3606 kg ha-1) over 0.6 Etc. But it was comparable with 0.8 Etc (3435 kg ha-1). Fertigation of 100 per cent RD N and K (150:75 NP2O5 kg ha-1) in six equal splits was recorded significantly higher seed cotton yield per hectare (3654 kg ha-1), as compared to 50 per cent RD N and K. But it was on par with 75 per cent RD N and K (3472 kg ha-1). The interaction effects of the different irrigation and fertigation levels had significant effect on seed cotton yield. However, the 1.0 Etc irrigation level with fertigation of 100 per cent RD N and K (I1F1) in six equal split application recorded significantly higher seed cotton yield (4024 kg ha-1), and it was on par with drip irrigation at 0.8 Etc with 100 per cent RD N and K (I2F1), 1.0 Etc with 75 per cent RD N and K (I1F2) and 0.8 Etc with 75 per cent RD N and K (I2F2). Drip irrigation at 1.0 Etc with basal dose of 100 per cent RDF in single row planting system (C1) was recorded significantly higher seed cotton yield per hectare (2943 kg ha-1) than C2 (2352 kg ha-1).
Pages: 1345-1350 | 392 Views 69 Downloads
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How to cite this article:
MY Shruti, YR Aladakatti. Effect of different levels of irrigation and fertigation on growth, physiology, yield attributes and yield of intra hirsutum Bt cotton. Int J Chem Stud 2018;6(6):1345-1350.
