06-09-2017, 03:11 PM
Rice (Oryza sativa L.) is the second most important cereal crop grown in India. It is a stable food in several important parts of the country. Blast is one of the most important diseases in rice caused by Pyricularia grisea. The pathogen known to attack the rice crop in several stages namely seedlings, carving and stages of appearance of the panicle due to severe infection the leaves dry and appear to the burned appearance in the nursery and also in the main field, resulting in reduced paddy performance. Twenty-two new fungicides were evaluated at recommended doses during carving, grubbing and heading for the management of blast disease in Ponnampet, Mercara District. The fungicides Win, Tricyclazole, Filia and Amistar significantly reduced the incidence of leaf blight and neck and increased seed yield compared to control. The incidence of neck-jet in the field of sprinkling of Win, Amistar, Tricyclozole and Filia was of 7,80, 10,87, 13,67 and 20,17 percent, respectively. The highest seed yield was recorded in the Filia, Tricyclozole, Sivic, Win and Amistar pulverized fields, ie 5525, 5527, 5525, 4890 and 3648 kg / ha, respectively. The incidence of leaves and neck blast in the control was of 29,30 and 58,32 percent respectively and the lowest yield recorded in the control field, that is, 619 kg / ha. The new fungicides Win, Amistar and Filia were effective against the disease by explosion and these fungicides are effective in the management of the disease by explosion. Tricyclazole was the best fungicide in the control of blast disease and increased yield. Among all the fungicides, Beam and Protega were highly effective against the disease of the bursts.