Vol. 11 (2 & 3) : March-June 2020 issue
Green Farming Vol. 11 (2 & 3) : 205-211 ; March-June, 2020
Influence of thiophanate methyl spray schedules on the management of field bean anthracnose and its effect on yield
S. NARASIMHA RAOa1*, S.L. BHATTIPROLUb2 and V. SEKHARc3
aDepartment of Plant Pathology, cDepartment of Statistics, College of Horticulture, Dr. Y.S.R. Horticultural University, V.R. Gudem - 534 101, West Godavari (Andhra Pradesh)
bRegional Agricultural Research Station, Acharya N.G. Ranga Agricultural University, Lam - 522 034, Guntur (A.P.)
Designation : 1Assistant Professor *(varsha.snrao@gmail.com), 2Principal Scientist (Plant Pathology), 3Teaching Associate
Subject : Plant Pathology, Nematology and Virology, Mushroom Cultivation
Paper No. : P-7861
Total Pages : 7
Received : 17 March 2020
Revised accepted : 30 May 2020
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Citation :
S. NARASIMHA RAO, S.L. BHATTIPROLU and V. SEKHAR. 2020. Influence of thiophanate methyl spray schedules on the management of field bean anthracnose and its effect on yield. Green Farming Vol. 11 (2 & 3) : 205-211 ; March-June, 2020.
ABSTRACT
Field bean suffers severely due to anthracnose which is caused by Colletotrichum lindemuthianum. The losses by anthracnose are always considered to be a limiting factor for yield and quality of pods. The present study on the influence of thiophanate methyl spraying schedules against field bean anthracnose revealed significant differences with respect to the number of infected pod/plant and pod yield/plant. Comparatively maximum number of pods/plant (69.75) and test weight (36.83 g) were recorded in plots received three sprays of thiophanate methyl (0.1%) than the untreated plots. The disease drastically affected the yield components according to various infection categories. The pod infection had direct effect on pod yield as severity on pods ranging from 7-9 (scale) caused 34.36-43.00 per cent reduction in pod weight and 20.86 -26.83 in test weight. A direct relation was noticed between number of sprayings with thiophanate methyl and per cent reduction of disease on pods and increase of yield. An increase in one number of spray caused the 11.24 and 14.99 units control of disease and relation holds good for 94.90% and 95.20%.
Key words :
Anthracnose, Field bean, Pod infection, Scales, Test weight, Thiophanate methyl, Yield attributes.