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Effect of different dates of sowing of sorghum sorghum bicolor cultivar sl 44 on the incidence of red leaf spot disease and major insect pests in punjab india



Effect of different dates of sowing of sorghum sorghum bicolor cultivar sl 44 on the incidence of red leaf spot disease and major insect pests in punjab india



Journal of Research Punjab Agricultural University 18(4): 400-405



Studies carried out at Ludhiana, Kheri, Faridkot and Abohar during 1978 and 1979 on sorghum (variety SL 44) showed that the mean incidence of red leaf-spot disease, Colletotrichum graminicolum was very high at Ludhiana and Kheri during both years. Its occurrence was in the order Kheri > Ludhiana > Abohar > Faridkot. Damage by the sorghum shootfly, Atherigona soccata Rond., was high at Ludhiana followed by Kheri and Abohar. It was greater on late-sown crops at Ludhiana and Kheri in both years. The infestation by the maize borer, Chilo partellus (Swinhoe) was heavy at Ludhiana followed by Faridkot, Abohar and Kheri. Of the infested stalks of late-sown crop, 51.3% harbored the hibernating larvae, whereas 59.6% of the infested stubble of early-sown crops contained hibernating larvae of the borer. On the basis of yield data, disease and insect pest incidence, Abohar (Ferozepur) was quite suitable for seed production by adopting late sowing which gave high grain yield. Highest fodder yield was obtained from early sowing at all the stations.

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Accession: 005233473

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Effect of different dates of sowing of sorghum on the incidence of red leaf spot disease and major insect-pests in Punjab Sorghum bicolor, Colletotrichum graminicolum, Atherigona soccata, Chilo partellus, India. Journal of research Punjab Agricultural University 18(4): 460-405, 1981

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