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A. L. Siddaramaiah , Srikant Kulkarni

Abstract

Five chemicals namely Bavistin, Calixin, Karathene, Morestan, Rogor each at 0.05 and 0.1% concentrations and sulphur as dust, were tested in the forest nursery against powdery mildew of tamarind (Tamarindus indica Linn.) caused by Oidium Sp. These chemicals were applied three times at an interval of 15 days. Sulphur dust was most effective followed by Karathane (0.1%) and Calixin(0.1%). Though the Karathane and Calixin were effective at 0.0.5% level but disease index was more compared to at 0.1% level. Morestan, Bavistin and Roger were not effective. The percentage disease indices in sulphur dust, Karathane (O.l%) and Calixin (0.1%) were 0, 6.60 and 6.60 respectively whereas in control plot it was 93.20, Sulphur dust, Karathane and Calixin can be used for controlling powdery mildew disease of tamarind.

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Srikant Kulkarni , A. L. Siddaramaiah , A. B. Basavarajaiah

Abstract

Toxic effect of the culture filtrate of Cercospora wrighitia Thirum and Chupp, the causal agent of leaf spot disease of Wrighitia tinctoria Br. was studied In the laboratory. To assess tbe toxin production, healthy young branches of brinjal, tomato and host (W. tinctoria) were used. The production of toxin was tested in Richard's medium and Potato dextrose broth. Various types of symptoms were noticed on test plants. The toxin production was comparatively more in Richard's medium than in PDB.

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Srikant Kulkarni , A. L. Siddaramaiah , A. B. Basavarajaiah

Abstract

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A. L. Siddaramaiah , Srikant Kulkarni , A. B. Basavarajaiah

Abstract

Eight fungicides were tested in the forest nursery against Cercospora wrighitia Thirum. And Chupp. Which is a destructive pathogen of forest nursery seedlings of Wrighitia tinctoria Br. These fungicides were sprayed thrice at an internl of 20 days. Bavistin was the most effective at a concentration of 0.05 per cent (500 mg/lit of water). Bayletan 0.05 per cent, Duter 0.2 per cent, Brestan 0.2 per cent, Baycor 0.05 per cent and Fytolan 0.2 per cent were also found effective to some extent, Thiram 0.2 per cent and Vitavax 0.1 per cent were not effective.

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S. Lingaraju , A. L. Siddaramaiah , R. K. Hegde

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M. G. Chandrakanth ¹, H. Ramachandra Reddy ², A. L. Siddaramaiah ³, B. Padmodaya ⁴, S. Jahagirdar ⁵, N. Basavaradhya ⁶, A. Ravishankar ⁷

Affiliations
1 Institute for Social and Economic Change, Nagarabhavi, Bengaluru – 560072, Karnataka, IN
2 University of Agricultural Sciences (UAS), GKVK, Bangalore – 560 065, Karnataka, IN
3 Department of Plant Pathology, UAS, GKVK, Bangalore – 560 065, Karnataka, IN
4 Department of Plant Pathology, SV Agricultural College, Tirupathi – 517502, Andhra Pradesh, IN
5 Department of Plant Pathology, UAS, Dharwad – 580005, Karnataka, IN
6 Kannada Sahithya Parishath, Bangalore – 560018, Karnataka, IN
7 NIAP, ICAR, New Delhi – 110012, Delhi, IN

Abstract

Ancient Indian texts such as Varahamihira's 'BrihathSamhitha', Chavundaraya's 'Lokopakara' and Sarangadhara's SarangadharaSamhitha’, provide recommendations for an integrated approach to control crop pests and diseases by managing soil, seed, plant and environment. The seed treatment with cow dung, milk, juice of plants and cow ghee is also prescribed. As prophylactic measure for disease control, the incense of plant leaves and flowers, along with fish meat, turmeric, mustard, are mentioned. 'Panchagavya' to control plant diseases were found effective in managing soil-borne diseases of tomato and Panama wilt disease banana.

Keywords

Diseases, Indigenous Knowledge, Kunapajala, Panchagavya, Plant Protection, Pests, Vrikshayurveda.

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