Himachal Journal of Agricultural Research

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Conservation Agriculture and Weed Management Effects on Growth Indices and Yield Attributes of Maize-Wheat Cropping System


Affiliations
1 Department of Agronomy, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, India
 

A field experiment was carried out for two years from 2018 to 2020 in maize-wheat cropping system to evaluate the effect of conservation agriculture (ZT, zero tillage; crop rotation and intensification; residue management) on growth indices and yield attributes with fifteen treatment combinations of five tillage viz. CTCT, CT-ZT, ZT-ZT, ZT-ZTR & ZTR-ZTR applied in maize and wheat crops in sequence(CT- conventional tillage; ZT- zero tillage; ZTR- zero tillage + residue) and three weed management treatments viz. H (recommended herbicide in maize) - H (recommended herbicide in wheat), IWM-IWM & HW-HW; (Hherbicide; IWM- integrated weed management; HW- hand weeding). Significant differences in growth and yield attributes were observed under tillage and weed management treatments in maize-wheat cropping system. Conservation agriculture (CA-ZT+R) based production system had taller plants, better unit area efficiency and yield components of maize and wheat crops. The zero tillage in maize and wheat in combination with residue incorporation (ZT-ZTR) resulted in shortest plants, lower plant population and minimum unit area efficiency in maize crop. ZT-ZT in wheat resulted in lower wheat height, unit area efficiency, effective tillers and 1000-grain weight. Weed management treatments significantly affected plant height, unit area efficiency and yield attributes of maize and wheat crops. H-H resulted in taller plants, better unit area efficiency and yield attributes i.e. plant population in maize and effective tillers, length of ear and total number of grains spike-1 in wheat crop. ZTR+H-ZTR+H (Conservation tillage combined with herbicide application in maize and wheat) was found to be comparatively superior to other combinations in terms of growth and yield attributes in maize-wheat cropping system.

Keywords

Conservation Agriculture, Conventional Tillage, Zero Tillage, Residue, Harvest Index, Yield Attributes.
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  • Conservation Agriculture and Weed Management Effects on Growth Indices and Yield Attributes of Maize-Wheat Cropping System

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Authors

Sachin Kumar
Department of Agronomy, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, India
S. S. Rana
Department of Agronomy, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, India

Abstract


A field experiment was carried out for two years from 2018 to 2020 in maize-wheat cropping system to evaluate the effect of conservation agriculture (ZT, zero tillage; crop rotation and intensification; residue management) on growth indices and yield attributes with fifteen treatment combinations of five tillage viz. CTCT, CT-ZT, ZT-ZT, ZT-ZTR & ZTR-ZTR applied in maize and wheat crops in sequence(CT- conventional tillage; ZT- zero tillage; ZTR- zero tillage + residue) and three weed management treatments viz. H (recommended herbicide in maize) - H (recommended herbicide in wheat), IWM-IWM & HW-HW; (Hherbicide; IWM- integrated weed management; HW- hand weeding). Significant differences in growth and yield attributes were observed under tillage and weed management treatments in maize-wheat cropping system. Conservation agriculture (CA-ZT+R) based production system had taller plants, better unit area efficiency and yield components of maize and wheat crops. The zero tillage in maize and wheat in combination with residue incorporation (ZT-ZTR) resulted in shortest plants, lower plant population and minimum unit area efficiency in maize crop. ZT-ZT in wheat resulted in lower wheat height, unit area efficiency, effective tillers and 1000-grain weight. Weed management treatments significantly affected plant height, unit area efficiency and yield attributes of maize and wheat crops. H-H resulted in taller plants, better unit area efficiency and yield attributes i.e. plant population in maize and effective tillers, length of ear and total number of grains spike-1 in wheat crop. ZTR+H-ZTR+H (Conservation tillage combined with herbicide application in maize and wheat) was found to be comparatively superior to other combinations in terms of growth and yield attributes in maize-wheat cropping system.

Keywords


Conservation Agriculture, Conventional Tillage, Zero Tillage, Residue, Harvest Index, Yield Attributes.

References