Broomrape (Orobanche cernua) germination biology, population dynamics and its control in tomato (Lycopersicon esculentum) fields in Karnataka
2013
Dinesha, M. S. | Dhanapal, G. N.
A field experiment was conducted to asses the efficacy of chemicals to control broomrape (Orobanche cernua Loefl.) in tomato (Lycopersicon esculentum Mill.) on the farmer's field at Hosakote village of Bagepalli taluk in Chickballapura district, Karnataka State during Rabi-Summer 2006–07. Hitherto, Orobanche cernua was severely and only affecting tobacco cultivation in India and hand weeding is the only current practice to weed out broomrapes. Now, it has infested tomato crop in large areas in alfisols. The experiment was laid out in Randomized Complete Block Design with ten treatments and replicated thrice. The broomrape spikes started emerging above-ground from 43–58 days after transplanting tomato. Flowering was completed by 7–13 days, stem drying was completed by 26–38 days and the broomrape took 37–50 days to complete its life cycle after emergence aboveground in tomato transplanted fields. Sulfosulfuron @75 g/ha recorded significantly lowest broomrape number, spike height, spike dry weight with higher broomrape control efficiency, which also accounted for higher plant height, number of branches and leaf area plant at harvest. Among all the chemical control treatments sulfosulfuron @ 75 g/ha recorded higher fruit weight/plant and fruit yield of tomato.
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