Indian Journal of Weed Science
Year : 1975, Volume : 7, Issue : 1
First page : ( 64) Last page : ( 68)
Print ISSN : 0253-8040. Online ISSN : 0974-8164.

Paraquat* for Weed Control in Potatoes in Punjab**

Mahay S. C., Pande P. N., Mittra M. K.

*Paraquat [1: 1 dimethyl - 4:4 bipyridylium dichloride] is marked as ‘Gramoxone’ in India.

**Contribution from Crop Protection Department, The Alkali & Chemical Corporation of India Limited 18, Strand Road, Calcutta-1, India.

Abstract

Five experiments were conducted in the potato growing areas of Punjab to assess the suitability of a contact herbicide for weed control in early potatoes. Paiaquat was applied at 500 g. ion/ha either as an overall application at 5–10% emergence of potatoes or later on as an inter-row applies (ion avoiding contact with the potato plants. Application of paraquat at either stage resulted in good control of weeds at a time when weeds normally provide the biggest competition to crop growth. Yields from paraquat treatments were comparable to that from the inter-row cultivation and earthing up treatments. Paraquat treatments cost less than inter-row cultivation and earthing up operations.

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