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Boruah, Sarodee
- Evaluation of Fungicides against Leaf Spot of Turmeric Caused by Colletotrichum capcisi
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Authors
Affiliations
1 Department of Plant Pathology, Assam Agricultural University, JORHAT (ASSAM), IN
2 Department of Agronomy, Assam Agricultural University, JORHAT (ASSAM), IN
1 Department of Plant Pathology, Assam Agricultural University, JORHAT (ASSAM), IN
2 Department of Agronomy, Assam Agricultural University, JORHAT (ASSAM), IN
Source
International Journal of Plant Protection, Vol 8, No 1 (2015), Pagination: 57-60Abstract
Fungicides are the common tool for the management of leaf spot of turmeric crop caused by Colletotrichum capsici (syd.) Buttler and Bisby. The efficacy of six (6) fungicides viz., blitox- 50, carbendazim, carbendazim 12 per cent + mancozeb 63 per cent, captan, mancozeb and matalaxyl were evaluated at minimum dose against the pathogen. Amongst the fungicides, carbendazim 12 per cent + mancozeb 63 per cent @ 0.2 per cent was found significantly effective in inhibiting the mycelial growth (4.47 cm) of the pathogen. Effect of carbendazim in inhibiting the mycelial growth of C. capsici was found next (2.90 cm) to carbendazim 12 per cent + mancozeb 63 per cent. Mancozeb (1.80 cm) and captan (1.62 cm) also showed effective results as compared to matalaxyl (1.0 cm).Keywords
Colletotrichum capsici, Fungicides, Leaf spot, Turmeric.
- SEM Study on Morphological Changes in Metarhizium anisopliae Infected Aphis craccivora Koch.
Abstract Views :298 |
PDF Views:110
Authors
Sarodee Boruah
1,
Pranab Dutta
1,
Joyarani Pegu
1,
Himadri Kaushik
1,
N. Gogoi
2,
K. C. Puzari
1,
G. N. Hazarika
3
Affiliations
1 Department of Plant Pathology, Assam Agricultural University, Jorhat-785013, IN
2 Department of Environmental Science, Tezpur University, Assam, IN
3 Department of Plant Pathology, Assam Agricultural University, Jorhat-785013
1 Department of Plant Pathology, Assam Agricultural University, Jorhat-785013, IN
2 Department of Environmental Science, Tezpur University, Assam, IN
3 Department of Plant Pathology, Assam Agricultural University, Jorhat-785013
Source
Journal of Biological Control, Vol 30, No 1 (2016), Pagination: 29-33Abstract
Morphological changes in Metarhizuim anisopliae (Metschnikoff) Sorokin infected cow pea aphid, Aphis craccivora Koch were studied by scanning electron microscope (SEM). Aphids were caged on paired lantern chimney over cowpea twigs dipped in conical flasks with water infected and inoculated with fungal propagules of M. anisopliae at the concentration of 1X106 spores /ml of water. Infected aphids were observed under SEM and it showed severe cuticular damage, abnormalities in sensory systems as well as deformation of all the body parts. The hydrophobic conidia of M. anisopliae were found to attach to all body regions. It was evident that mycelial growth and conidiophores with conidia of M. anisopliae covered the body surface and penetrates inside the body of infested aphid causing damage to the pest by disturbing its major physiological activities leading to its death.Keywords
Aphis craccivora, Metarhizuim anisopliae, Scanning Electron Microscope.Full Text
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