Effect of Plant Growth Promoters and Herbicides on Growth, Yield Attribute and Yield of Kharif Hybrid Maize (Zea mays L.)

Shravan Kumar Maurya *

Department of Agronomy, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P) – 208002, India.

V. K. Verma

Department of Agronomy, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P) – 208002, India.

Naushad Khan

Department of Agronomy, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P) – 208002, India.

D.D. Yadav

Department of Agronomy, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P) – 208002, India.

M.Z. Siddqui

Department of Agronomy, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P) – 208002, India.

Sarvesh Kumar

Department of Soil Conservation and Water Management, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P) – 208002, India.

Anil Kumar

Department of Soil Science and Agricultural chemistry, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P) – 208002, India.

Jaykar Singh

Department of Agronomy, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P) – 208002, India.

Mandeep Kumar

Department of Agronomy, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P) – 208002, India.

*Author to whom correspondence should be addressed.


Abstract

A field experiment was conducted during two consecutive kharif seasons 2022 and 2023 at Students’ Instructional Farm, Department of Agronomy, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P.) - 208002 India. The experiment was laid out in split plot design with three replications. Three plant growth promoters [viz. Gibberellic acid (P1), Cytokinin + Enzymes (P2) and Amino acid + Humic acid + Sea weed extract (P3)] were allocated in main plots; whereas six herbicidal treatments [viz. Weedy check (W1), Tembotrione 42%SC @ 120g a.i./ha (W2), Halosulfuron methyl 75% WG @ 72g a.i./ha (W3), Topramezone 33.6 SC @ 25.2g a.i./ha (W4), Atrazin 50%WP @ 1kg a.i./ha (W5) and Mesotrione 2.27%W + Atrazin 22.7%SC @ 750 ml a.i./ha (W6)] were setup in sub plots. On the pooled basis of two years experimental results showed that, application of Amino acid + Humic acid + Sea weed extract (P3) recorded significantly highest value of plant height (208.22cm), crop growth rate (47.54 and 9.96 g m-2 day-1 at 60 - 90 DAS and 90 DAS - harvest stage, respectively), relative growth rate (0.1029, 0.1052 and 0.0825 g g-1 day-1 at 30 - 60 DAS, 60 - 90 DAS and 90 DAS - harvest stage, respectively), length of cob (18.56cm), number of grains cob-1 (574.01), grain yield (6835.95 kg ha-1) and harvest index (34.26). However, among herbicidal treatments, Tembotrione 42%SC @ 120g a.i./ha (W2) was recorded significantly maximum weed control efficiency (85.86% at 75 DAS) plant height (216.59cm), leaf area (5226cm2) crop growth rate (43.45, 48.77 and 10.26 g m-2 day-1 at 30 - 60 DAS, 60 - 90 DAS and 90 DAS - harvest stage, respectively), relative growth rate (0.1037. 0.1053 and 0.0829 g g-1 day-1 at 30 - 60 DAS, 60 - 90 DAS and 90 DAS - harvest stage, respectively) and net assimilation rate (5.65 g m-2 day-1 at 30 - 60 DAS), length of cob (18.56cm), number of grains cob-1 (574.01), grain yield (6835.95 kg ha-1) and harvest index (34.26).

Keywords: Growth, plant growth promoters, herbicide, maize and yield


How to Cite

Maurya, Shravan Kumar, V. K. Verma, Naushad Khan, D.D. Yadav, M.Z. Siddqui, Sarvesh Kumar, Anil Kumar, Jaykar Singh, and Mandeep Kumar. 2024. “Effect of Plant Growth Promoters and Herbicides on Growth, Yield Attribute and Yield of Kharif Hybrid Maize (Zea Mays L.)”. International Journal of Plant & Soil Science 36 (9):871-79. https://doi.org/10.9734/ijpss/2024/v36i95037.