Bio-efficacy of new herbicides on weed dynamics, productivity and nutrient uptake in maize (Zea mays) under rainfed condition of Jhabua hills

RAKESH KUMAR YADAV; NARENDRA KUMAWAT; A SINGH; I S TOMAR; MAHENDER SINGH; JAGDEESH MORYA; RAKESH KUMAR; PRAVIN KUMAR UPADHYAY

doi:10.56093/ijas.v88i7.81599

Authors

RAKESH KUMAR YADAV Scientist, Krishi Vigyan Kendra, Jhabua 457 661
NARENDRA KUMAWAT Zonal Agricultural Research Station, Jhabua 457 661
A SINGH Krishi Vigyan Kendra, Sidhi (MP)
I S TOMAR Zonal Agricultural Research Station, Jhabua, Madhya Pradesh 457 661
MAHENDER SINGH Zonal Agricultural Research Station, Jhabua, Madhya Pradesh 457 661
JAGDEESH MORYA Zonal Agricultural Research Station, Jhabua, Madhya Pradesh 457 661
RAKESH KUMAR Scientitist, Division of Crop Research, ICAR Research Complex for Eastern Region Patna 800 014
PRAVIN KUMAR UPADHYAY Scientist, Division of Agronomy, Indian Agricultural Research Institutes, New Delhi 110 012

https://doi.org/10.56093/ijas.v88i7.81599

Keywords:

CRI, HEI, Maize, Nutrient uptake, Weed control efficiency, Yields

Abstract

Field studies were conducted during the rainy seasons of 2014 and 2015 at Zonal Agricultural Research Station, Jhabua under the rainfed condition to determine the effect of new herbicides on weed dynamic, yield and nutrient uptake in maize (Zea mays L.). Results revealed that application of saflufenacil 68 g/l + diamethanamid-P 600 g/l EC (85 +750 g/ha) recorded the lowest weed density of sedges, grasses and broad leaf weeds in maize, and improved growth, yield attributes and yield of maize. The highest grain yield (3.37 t/ha), stover yield (4.17 t/ha) and biological yield (7.57 t/ha) was recorded with saflufenacil 68 g/l+diamethanamid-P 600 g/l EC (85 +750 g/ha). This treatment also recorded the higher NPK content (1.53, 0.24, 0.34% and 1.01, 0.13, 1.36%, respectively) and uptake (52.06, 8.13, 11.40 kg/ha and 42.08, 5.46, 56.66 kg/ha, respectively) by grain as well as stover. The maximum gross returns (Rupees 52 525/ha), net returns (Rupees 36 125/ha), B: C ratio (2.20), production efficiency (26.98 kg/ha/day) and economic efficiency (Rupees 286.70/ha/day) were recorded under saflufenacil 68 g/l+diamethanamid-P 600 g/l EC (85 +750 g/ha). Hence, for better control of weeds, higher productivity and profitability of maize, herbicide mixture, i.e. saflufenacil 68 g/l + diamethanamid-P 600 g/l EC (85 +750 g/ha) should be applied as pre-emergence under rainfed condition of Jhabua hills of Madhya Pradesh.

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