Enhancing productivity and cost-effectiveness of groundnut (Arachis hypogaea) through novel herbicide use in Gujarat plains of India

C S  PRAHARAJ; AARADHANA  CHILWAL; KEVAL  HIRAPARA; KIRAN  REDDY; SHANMUKA  ADUPA

doi:10.56093/ijas.v96i6.168322

Authors

C S PRAHARAJ ICAR-Indian Institute of Groundnut Research, Junagadh 362 001, Gujarat, India
AARADHANA CHILWAL ICAR-Indian Institute of Groundnut Research, Junagadh 362 001, Gujarat, India
KEVAL HIRAPARA ICAR-Indian Institute of Groundnut Research, Junagadh 362 001, Gujarat, India
KIRAN REDDY ICAR-Indian Institute of Groundnut Research, Junagadh 362 001, Gujarat, India
SHANMUKA ADUPA ICAR-Indian Institute of Groundnut Research, Junagadh 362 001, Gujarat, India

https://doi.org/10.56093/ijas.v96i6.168322

Keywords:

Diclosulam, Economics, Fenoxaprop-p-ethyl, Weed control efficiency, Weed index

Abstract

Appropriate weed management in groundnut (Arachis hypogaea L.) with an efficient herbicide plays a crucial role for effective weed control, reducing crop-weed competition and ultimately enhances crop productivity. Therefore, the present study was carried out to evaluate new pre-emergence (PE) and post-emergence (PoE) herbicides in comparison to traditional methods during rainy (kharif) season 2022 and spring-summer 2023 at ICAR-Indian Institute of Groundnut Research, Junagadh, Gujarat on groundnut variety ‘TG 37A’. The study involved nine treatment combinations, laid out in a randomised complete block design under field conditions. Results indicated that the treatment diclosulam @26 g/ha as PE and fenoxaprop-p-ethyl @78 g/ha as PoE was efficient in terms of efficient weed control and higher yield. This treatment resulted in higher pod yield of 2,682 kg/ha in rainy season 2022 and 3,245 kg/ha in springsummer 2023 compared to national average yield (2 t/ha), showing an increment of 22.5 and 13.1%, respectively over recommended manual weed control with intercultural operation during the respective seasons. Furthermore, net economic returns, based on selling price of both pod and haulm yields, were also increased tremendously (30.5% during rainy season and 14.7% during spring-summer) with a corresponding surge in benefit-cost ratios (31.2% in the former and 8.74% in latter season) under this treatment compared to manual weed control. Other crop and weed growth attributes (weed control efficiency, weed index, nodulation and NPK uptake by the crop) followed the similar trend as that of the pod yield. The study concluded that groundnut crop can be more remunerative through need-based use of both pre- and post-emergence novel herbicides.

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