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Studies on the use of dry heat to decontaminate niger seed guizotia abyssinica infested with dodder seed cuscuta sp

, : Studies on the use of dry heat to decontaminate niger seed guizotia abyssinica infested with dodder seed cuscuta sp. Seed Science & Technology 16(2): 501-506

Two species of dodder, Cuscuta campestris Yuncker and C. indecora Choisy were used to test methods of devitalisation. A temperature of C was found to be effective in attaining zero germination even at an exposure period of only a quarter of an hour. The use of heat to decontaminate niger seed (Guizotia abyssinica) infested with dodder seems to be a practical solution. The niger seed does not appear to be injured for use as bird feed (its primary use) and some 4% still germinated after four hours at C. Temperature probes were inserted throughout the load (including the centre of the bags). Treatment time started when all probes registered C or higher.

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Related references

Patro G.K.; Misra A.; Tosh G.C., 1973: Bionomics of cuscuta dodder and its control with herbicides in niger seed guizotia abyssinica. Proceedings All India Weed Control Seminar 3: 65

Tosh G.C.; Patro G.K., 1975: Control of dodder cuscuta chinensis in niger guizotia abyssinica with chlorpropham. Weed Research 15(4): 207-210

Tosh, G.C.; Patro, G.K., 1975: Control of dodder (Cuscuta chinensis Damk.) in niger (Guizotia abyssinica L.f.Cass) with chlorpropham. Trials were carried out in the kharif seasons of 1970-71 and 1972-73; dodder and niger seeds were sown together. Chlorpropham at 4 kg/ha applied on the day following the initiation of C. chinensis germination, controlled the dodder without damagin...

Mishra, J.S.; Moorthy, B.T.S.; Bhan, M.; Yaduraju, N.T., 2007: Relative tolerance of rainy season crops to field dodder (Cuscuta campestris) and its management in niger (Guizotia abyssinica). Field dodder (Cuscuta campestris) is an annual obligate stem parasite that attaches itself to a variety of host crops and causes severe damage to them. Studies were conducted in India to evaluate the relative tolerance of rainy season crops viz.,...

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Teklewold, A.; Alemayehu, N., 2002: Studies on the floral characteristics of niger seed (Guizotia abyssinica (L.f.) Cass.). An investigation on some aspects of the floral characteristics (anthesis, dehiscence, and stigma receptivity) of niger seed, G. abyssinica, was carried out on three cultivars (Fogera, Esete, and a local cultivar) under field and greenhouse conditi...

Ramadan, M.F.; Morsel J.T., 2003: Phospholipid composition of niger (Guizotia abyssinica Cass.) seed oil. Niger (Guizotia abyssinica Cass.) seeds were extracted with chloroform/methanol (1:1, v/v) and total lipid content was 49.9% of seed weight. The major fatty acid was linoleic acid followed by oleic acid as a second unsaturated fatty acid. Palmitic...

Rossi, C.E.uardo.; Ferraz, L.C.rlos Camargo Barbosa., 2000: Reproduction of some species of phytonematodes of niger Guizotia abyssinica Reproducao de algumas especies de fitonematoides em niger Guizotia abyssinica. Revista de Agricultura (Piracicaba). Dezembro; 753: 303-309

Shukla, B.N.; Singh, B.P., 1973: Effect of fungicides on seed-borne pathogens of niger (Guizotia abyssinica). In Petri plates with PDA the best control of seed-borne pathogens was given by 0.25% dithane C-90.