FIELD EVALUATION OF SOME NEWER FUNGICIDES AGAINST TIKKA LEAF SPOTS AND RUST OF GROUNDNUT (Arachis hypogaea L.)
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Title |
FIELD EVALUATION OF SOME NEWER FUNGICIDES AGAINST TIKKA LEAF SPOTS AND RUST OF GROUNDNUT (Arachis hypogaea L.)
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Creator |
RAMA KISHAN, G
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Contributor |
CHANDRASEKHARA RAO, K
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Subject |
FIELD, EVALUATION, SOME, NEWER, FUNGICIDES, AGAINST, TIKKA, LEAF, SPOTS, RUST, GROUNDNUT
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Description |
Field experiments were carried out to evaluate the efficacy of three systemic fungicides viz., hexaconazole (0.2%), thiophanate-methyl (0.05%) and carbendazim (0.05%) and two non-systemic fungicides viz., chlorothalonil (0.27%) and mancozeb (0.2%) on active ingredient basis against tikka leaf spots (Cercospora arachidicola and Phaeoisariopsis personata) and rust (Puccinia arachidis) of groundnut during the kharif season of 1990-91 at the College Farm, APAU, Rajendranagar. In one experiment, all the fungicides with 3, 4, 5 and 6 spray schedules were tested on Kadiri-3 grour.dnut cultivar to find out the number of sprays of each fungicide required for effective control of tikka leaf spots and rust of groundnut. The experiment was laid out in a randomized block design replicated twice. In another experiment the combinations of all these fungicides at field recommended doses and half the field recommended doses were tested against tikka leaf spots and rust of groundnut u£ing the cultivar TMV-2 with a randomized block desiyn replicated twice. All the fungicides tested were significantly effective over control in reducing the incidence of tikka leaf spots and rust with a consequent increase in pod yield, number of pods/plant, shelling percentage and haulm yield and resulted in reducing defoliation at all the spray schedules tested. However, three sprays of all the f~ngicides were sufficient to control both the diseases economically. Hexaconazole was found to be highly effectiva over all the other fungicides tested. Chlorothalonil was on par with thiophanate methyl and was significantly superior over carbendazim and mancozeb. Nevertheless, thiophanate-methyl followed by carbendazim and mancozeb were most profitable for control of these diseases as the cost-benefit ratio was highest with these fungicides. All the combinations of fungicides at the field recommended doses and half the field recommended doses were significantly effective over control in reducing the incidence of both the diseases. They were also effective in reducing defoliation with consecutive increase in pod yield, number of pods/plant, shelling percentage and haulm yield. The combination of hexaconazole (0.2%) + chlorothalonil (0.27%) was found to be highly effective in controlling both the diseases and increasing the yield. However, the combinations of carbendazim (0.025%) + thiophanate-methyl (0.025%) and thiophanate-methyl (0.025%) + mancozeb (0.1%) were most profitabl~. |
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Date |
2016-08-19T13:17:06Z
2016-08-19T13:17:06Z 1991 |
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Type |
Thesis
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Identifier |
ACHARYA N.G.AGRICULTURAL UNIVERSITY RAJENDRANAGAR, HYDERABAD - 500 030
http://krishikosh.egranth.ac.in/handle/1/73009 |
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Language |
en
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Format |
application/pdf
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