BIO EFFICACY OF FUNGAL BIOAGENTS AND FUNGICIDE CHEMICALS FOR THE MANAGEMENT OF ROOT ROT-WILT COMPLEX DISEASES IN CHICKPEA
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Author(s):
LOKESH B.K, GURUPRASAD BALLOL, JAYALAXMI, BASAMMA KUMBAR
Vol - 9, Issue- 11 ,
Page(s) : 33 - 39
(2018 )
DOI : https://doi.org/10.32804/IRJMST
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Abstract
Chickpea crop suffers from serious diseases that affect it in all growth stages and pathogens that affect chickpea include fungi, bacteria, viruses, nematodes and mycoplasma, which results in severe economic losses globally. Among these, fungi are the largest and perhaps most important group affecting roots, stem, leave, flowers and pods of chickpea.Wilt and root rot diseases of chickpea caused by Fusarium oxysporum f. sp. ciceri and Macrophomina phaseolina are serious biotic constraints for chickpea production. These are most important and widespread soil- and seed-borne diseases of chickpea grown where the climate is relatively dry and warm.The pathogen in association with other soil-borne pathogens like root rots and foot rot also causes extensive damage to chickpea crop. To find out the effective management of the wilt root rot diseases through seed biopriming with biocontrol agents and fungicides were employed. Treatment combining Thiophonate methyl 450 g/l +Pyraclostrobin 50g/l@4 ml/kg has recorded minimum wilt 3.14 percent with highest yield 11.48qtl/ha followed by seed treatment with Tebuconazole @1 g/kg found to record 3.90 PDI and 10.06 qtl/ha yield when compared to control treatment showed highest percent wilt of 16.15 with lowest yield 6.76 qtl/ha observed at farmers field Sampagavi of Bailhongal. However, minimum wilt incidence of 7.04 percent and highest yield 10.82 qtl/ha was recorded from Thiophonate methyl 450 g/l +Pyraclostrobin 50 g/l @ 4 ml/kg seed treatment plot followed by treatment with Tebuconazole @ 1 g/kg found to record 9.39 PDI and 9.87 qtl/ha yield when compared to control treatment showed maximum 24.50 percent wilt incidence with lowest yield 6.80 qtl/ha (Table 1). Seed treatment by Trichoderma harzianum @ 10g/kg recoded minimum of 11.36 wilt percent incidence with higher yield 9.11qtl/ha followed by chickpea magic seed treatment plot found to record 17.10 percent of wilt disease incidence and 7.94 qtl/ha yield was recorded from pooled mean values of the field experiment conducted at three different locations.
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