Efficacy, selectivity and economics of metolachlor for weed controlin maize (Zea mays) and its effect on succeeding chickpea (Cicer arietinum)


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Authors

  • NEESHU JOSHI College of Agriculture (Agriculture University, Ujwa, Rajasthan), Nagaur, Rajasthan
  • SHOURABH JOSHI College of Agriculture (Agriculture University, Ujwa, Rajasthan), Nagaur, Rajasthan
  • SAMARPAL SINGH Krishi Vigyan Kendra (National Horticultural Research and Development Foundation), Ujwa, New Delhi
  • BISWAJIT PRAMANICK Dr. Rajendra Prasad Central Agricultural University, Sabour, Bihar
  • DINESH JINGER ICAR-Indian Institute of Soil and Water Conservation, Vasad, Anand, Gujarat
  • JITENDRA KUMAR SHARMA Agriculture Research Sub-Station (Agriculture University, Jodhpur), Sumerpur, Pali, Rajasthan
  • EKTA JOSHI Rajmata Vijyaraje Scindia Krishi Vishva Vidhyalaya, Gwalior, Madhya Pradesh
  • HARSH VARDHAN SINGH SHEKHAWAT Agriculture Research Sub-Station (Agriculture University, Jodhpur), Sumerpur, Pali, Rajasthan

https://doi.org/10.56093/ijas.v95i7.149078

Keywords:

Hand weeding, Metolachlor, Phytotoxicity,Weed management, Weed control efficiency

Abstract

The inverse correlation between maize (Zea mays L.) yield and weed density has been well-established over time. Among the various weed management strategies, chemical control is recognized as the most efficacious. An experiment was conducted during 2019 and 2020 at Agriculture Research Sub-Station (Agriculture University, Jodhpur, Rajasthan), Sumerpur, Pali, Rajasthan to evaluate superiorr effectiveness of metolachlor @1000 g a.i./ha and 1200 g a.i./ha in managing broad-leaved weeds and certain grass species, when compared to atrazine applied at 1000 g a.i./ha, in maize cultivation. The maize variety ‘PHM-4’ was selected for the study. The experiment was laid out in a randomized block design (RBD) having three replication. This resulted in a total weed control efficiency of 63.4% and 61.3% across all crop growth stages. However, it's worth noting that a higher dose of metolachlor at 2000 g a.i./ha showed signs of phytotoxicity on maize, which eventually recovered within 15–20 days post-herbicide treatment. The study concluded that metolachlor at 1000 g a.i./ha effectively combats broad-leaved and some grassy weeds in maize. Notably, the maximum net return was observed with metolachlor at 1000 g a.i./ha, amounting to ₹35,150/ha and ₹51,496/ha during both years. In the subsequent chickpea phase, no treatment was applied, and phytotoxicity was observed in metolachlor at 2400 g a.i./ha, causing yellowing and stunting of plants.

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References

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Submitted

2024-03-01

Published

2025-07-10

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Articles

How to Cite

JOSHI, N. ., JOSHI, S. ., SINGH, S. ., PRAMANICK, B. ., JINGER, D. ., SHARMA, J. K. ., JOSHI, E. ., & SHEKHAWAT, H. V. S. . (2025). Efficacy, selectivity and economics of metolachlor for weed controlin maize (Zea mays) and its effect on succeeding chickpea (Cicer arietinum). The Indian Journal of Agricultural Sciences, 95(7), 746–752. https://doi.org/10.56093/ijas.v95i7.149078
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