Vol. 11, Issue 9 (2022)

Author(s):
NN Nanda, A Dhal, SR Dash and P Dhal

Abstract:
A field experiment was conducted in experimental and research station of AICRP on forage crops and utilization, at Odisha University of Agriculture and Technology, Bhubaneswar under East and South Eastern Coastal Plain zone of Odisha, taking thirteen treatments during two seasons, kharif 2019 and kharif 2020 to evaluate the performance against wilt incidence and other yield attributing character. From the study, it was found that seed treatment with Carboxin + Thiram @ 0.2% followed by root zone drenching with Metalaxyl + Mancozeb (Ridomil) @ 0.2% was the best treatment compared to others. It recorded the highest germination (90.70%), least wilt incidence (6.63%) and their by reducing the disease by 70.36% over control. It produced the highest green fodder yield 340.80 q/ha as well as highest seed yield of 562.73 kg ha-1 l which revealed an incremental yield of 19.38% and 10.27% respectively over untreated check controlled plot. The seed treatment with Vitavax power @ 0.2% followed by root zone drenching with Validamycin @ 0.1% was found to be next best treatment which reduced the disease by 62.45% and also increased GFY by 18.09% and seed yield by 9.74%. Also seven cultivars of rice bean (JRBJ-10-2, Bidhan-2, Bidhan-3, JRBJ-10-3, KRB- 110, JOR-19-1, JOR-19-2) were evaluated against wilt of rice bean under field condition. Among all varieties JRBJ-10-2 was the best performer with respect to increase in yield and reducing disease incidence in rice bean. Cultivars like JRBJ-10-2, Bidhan-2 and Bidhan-3 were found to resistant to root rot and wilt disease, whereas cultivars like KRB-110 and JRBJ-10-3 were moderately resistant and JOR-19-1 and JOR- 19-2were moderately susceptible variety. The green fodder yield (GFY) obtained was highest (326.0 q ha-1) in JRBJ-10-2. Bidhan-3 and Bidhan-2 were the next best varieties which recorded 295.8 (q ha-1) and 287.5 8 (q ha-1) of GFY respectively. The highest dry matter yield 73.9 8 (q ha-1) was recorded in JRBJ-10-2 followed by Bidhan-3 and Bidhan-2 recorded DMY of 68.1 8 (q ha-1) and 62.5 8 (q ha-1) respectively. The variety JRBJ-10-2 attained maximum plant height (175.3 cm) followed by Bidhan-3 (172.7 cm) and Bidhan-2 (168.5 cm). The highest leaf stem ratio of (1.21) was obtained in Bidhan-2 followed by JRBJ-10-2 (1.14), Bidhan-3 (1.09) and KRB-110 (1.03).