Influence of weed management practices in maize (Zea mays) based intercropping system

MANJANAGOUDA S SANNAGOUDAR; K N KALYANA MURTHY; NAGARAJU; G A RAJANNA; AVIJIT GHOSH; AMIT K SINGH; GAURENDRA GUPTA; R V KUMAR

doi:10.56093/ijas.v91i7.115133

Authors

MANJANAGOUDA S SANNAGOUDAR ICAR-Indian Grassland and Fodder Research Institute, Jhansi,Uttar Pradesh 284 003, India
K N KALYANA MURTHY University of Agricultural Sciences, Bangalore
NAGARAJU University of Agricultural Sciences, Bangalore
G A RAJANNA ICAR-Indian Agricultural Research Institute, New Delhi
AVIJIT GHOSH ICAR-Indian Grassland and Fodder Research Institute, Jhansi,Uttar Pradesh 284 003, India
AMIT K SINGH ICAR-Indian Grassland and Fodder Research Institute, Jhansi,Uttar Pradesh 284 003, India
GAURENDRA GUPTA ICAR-Indian Grassland and Fodder Research Institute, Jhansi,Uttar Pradesh 284 003, India
R V KUMAR ICAR-Indian Grassland and Fodder Research Institute, Jhansi,Uttar Pradesh 284 003, India

https://doi.org/10.56093/ijas.v91i7.115133

Keywords:

Intercrops, Maize, MEY, WCE, Weed index

Abstract

A field experiment was conducted at University of Agricultural Sciences, Bengaluru during kharif 2016 and 2017 on red sandy loam soil and the experiment was laid out in Randomized Complete Block Design with factorial concept and replicated thrice. There were 15 treatment combinations involving three intercrops and five weed management practices. The results of the experiment revealed that intercropping of maize (Zea mays L.) with cowpea [Vigna unguiculata (L.) Walp.] has recorded significantly lower total weed density (5.92 No./m2), weed dry weight (6.21 g/ m2), higher WCE (66.97 %), lower WI (17.67 %), higher grain yield (5842 kg/ha) and stover yield (7035 kg/ha) but the higher MEY (8224 kg/ha) was recorded in maize + pole bean intercropping system. Among the different weed management practices, pre-emergence application of pendimethalin 30 % EC @ 1.50 kg/ha recorded significantly lower weed population (5.12 No./m2), weed dry weight (5.05 g/m2), higher WCE (81.81 %), lower WI (7.24 %), higher grain (6589 kg/ha), stover yield (8033 kg/ha) and MEY (8860 kg/ha) compared to other weed management practices.

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References

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