Management of pigeonpea wilt using host resistance, chemicals, soil amendments and bioagents

Abstract

The present investigation was carried out in the laboratory and research farm of Birsa Agricultural University Ranchi on management of pigeonpea wilt. Wilt disease in Pigeonpea was found at all ten locations surveyed during Kharif, 2015-16 and 2016-17. Maximum wilt percent was found at Bukru (32.14%) followed by Kanadu (29.40%) and Ranchi BAU (28.63 %). Out of 19 medium entries evaluated, 13 entries showed moderately resistant reaction to wilt, Among 43 late entries, 5 entries viz., MA-6, PT0012(C), WRGE 102, CRG9701, WRGE 248 showed resistance against wilt. In host differential reaction, ICP8868, BDN-2, BAHAR genotypes showed same reaction to the three different effective isolates (Isolate – 1, 14, 35) of Fusarium udum, and these are grouped under variant 3 Seed treatment with Saaf @ 2.5 g/kg seed proved to be the most effective treatment in which least wilt severity per cent (15.03 %, 18.75 % ) and highest yield (1491.22 Kg/ha, 1369.32 Kg/ha) were recorded during 2015-16 and 2016-17, respectively. Soil application of Neem + Musturd cake @ 5+5 q/ha proved to be the most effective treatment in which least wilt severity percent (15.97%, 13.57% ) and highest yield (1510.28 Kg/ha, 1410 Kg/ha ) were recorded during 2015-16 and 2016-17, respectively. Seed treatment with biocontrol agent Trichoderma viride (Commercial strain) proved to be the most effective treatment in which least wilt severity (23.33%, 20.89%) and highest yield (1429.65 Kg/ha and 1349.25 Kg/ha) were recorded during 2015-16 1nd 2016-17, respectively.