Variable Cultivar Response to Metalaxyl Treatment in Pearl Millet

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Abstract
Two formulations of metalaxyl were tested as seed treatments for control of downy mildew [Sclerospora graminicola] and for their effects on germination, emergence, time of flowering, and grain yield with 4 pearl millet (P. americanum) cultivars [7042, NHB-3, BJ-104 and ICH-105] that varied in susceptibility to this disease. Germination was reduced significantly (P = 0.05) in all cultivars at the higher rate of fungicide application but emergence was reduced in only 1 of the 4 cultivars; metalaxyl gave significant (P = 0.05) grain yield increases only on the 2 most susceptible cultivars. In the field trial, significant (P = 0.05) reductions in downy wildew were obtained with all fungicide treatments.

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