Integrated Management of Rice Fungal Diseases by the application of newer Fungicides on Farmers Field

Integrated Management of Rice Fungal Diseases by the application of newer fungicides on Farmers field S

Abstract

This study was conducted at the farmers participatory on-farm trial on Rice var. MTU 7029 in the Sheikhpura district of Bihar during Kharif Season in the year 2012 and 2013 for assessment of New Fungicides in Integrated Disease Management (IDM) of Rice Fungal Diseases (Sheath Blight., Neck Blast, Brown Spot, FalseSmut & Grain Discoloration). A total of 10 farmers as replication with 0.4 ha each, under a total of 4 treatments was included in the study. The spraying of fungicides was done at the booting stage of rice crop followed by recording the data on diseases and yield at an appropriate time. The mean result of the on-farm trial of 2 years indicated that the single spray of all the 3 technology options of fungicides combination significantly reduced all 5 fungal diseases along with corresponding enhancement of grain yield, net profit and BC ratio.Out of themNativo 75 WG (Tebuconazole 50%+Trifloxystrobin 25% ) @ 0.05 %, reduced all 5 fungal diseasesviz. Sheath blight, Neck Blast, Brown Spot, False Smut & Grain discoloration to the minimum level of  9.4, 4.2, 6.5, 8.1 and 3.3 percent respectively along with corresponding highest grain yield (5230 kg/ha), the net return of Rs.28900/ha and  B:C ratio 2.24. Both other combinations viz.Monceren250 SC ( Pencycuron 22.9%SC) @ 0.12 % +Bavistin (Carbendazim) 50WP @ 0.1%  and Sheathmar (Validamycin 3% L) @0.25 %+Bavistin (Carbendazim)  50WP @ 0.1 % resulted into significantly lower diseases level at par of 12.1, 9.7,8.5,19.4 and 6.6 % along with corresponding higher grain yield (4360 kg/ha),net return of Rs.20800/ha B:C ratio 1.94 in comparison of  38.3, 15.5, 18.4,25.5 and 12.3 % diseases level along with 3720 kg/ha grain yield, Rs.15,700/ha as net profit and 1.73 as BC ratio in the Farmers practice.

Hence it can be concluded that single spray of Nativo75WG (Tebuconazole 50%+Trifloxystrobin 25% ) @ 250 gram/ha in 500 liters of water at booting stage of Rice cultivar MTU 7029 may be a highly effective method to manage major fungal diseases at farmers field and to get maximum net profit.