P-22. Prevention of Infection and Spread of Cucumber mosaic virus disease in cucumber (Cucumis sativus L.) through plant products
Abstract
Cucumber (Cucumis sativus L.) commonly known as kheera is an important summer vegetable grown in all parts of India. It is used as salad, pickle and also as cooked vegetable. Cucumber has been cultivated in India for at least three thousand years. In India major cucumber growing states are Bihar, Haryana, Madhya Pradesh, Punjab, Uttar Pradesh and West Bengal. However this crop is continuously damaged by a number of pests and diseases. The prevailing weather conditions and continuous cropping, without crop rotation are highly favorable for their perpetuation. Some of these diseases are of economic importance causing serious losses to yield and quality of products. These losses can be minimized by adopting preventive measures/immunization through antiviral agents. Theses antiviral agents have been isolated from plants like, C. aculeatum, neem (Azadirachta inica) and Arjuna (Terminalia arjuna). These botanicals (Azadirachta indica, Clerodendrum aculeatum and Terminalia arjuna) were found effective against various viral infections. We have conducted experiments and found minimum disease incidence (22.21 and 22.16%) with maximum vine length (5.20 and 5.4 m) secondary branches (63.80 and 64.70), early flowering (44.0 and 43.10 DAS), number of fruit/plant (18.75 and 18.30) and maximum yield (13.40 and 14.20 kg) per plot in seed treatment with neem extract followed by six sprays of the same botanical i.e. T18 during 2004–05 and 2005–06.Yield losses estimated were 2.23–47.31% during 2004–05 and 2.81–48.60% during 2005–06.
