3 research outputs found
Allelopathic Effects of Some Fruit Plant Species with Weeds
No full textAqueous extracts of seven fruit plant species viz., banana (Musa paradisiaca), Indian gooseberry (Phyllanthus emblica), jack fruit (Artocarpus heterophyllus), guava (Psidium guajava), mango (Mangifera indica), litchi (Litchi chinensis), wood apple ((Aegle marmelos) were tested for germination, radical and plumule growth of barnyard grass and green amaranth. The lowest germination percentage (9.5 and 14.4%), plumule (3.94 and 0.92 cm) and radicle length (0.825 and 0.495 cm) of barnyard grass and green amaranth seedlings were obtained in seed treated with wood apple aqueous extract due to presence of some toxic compounds or other inhibitory materials in the species. One of these plant extract which performed the best i.e. wood apple leaves extract has the potential for use as an alternative crop as a herbicide (protectants) against barnyard grass and green amaranth weed species
Allelopathic Effects of Schima khasiana and Michelia champaca on Germination and Growth of Some Legume and Cereal Crops of North Eastern Himalayan Region
No full textAllelopathic influences of Michelia champaca and Schima khasiana were tested in bioassay on two cereal crops (maize-Zea mays and paddy-Oryza sativa), and two legume food crops (rice bean- Vigna umbellata and soybean- Glycine max). The aqueous leaf extracts of fresh dried leaves of above tree species suppressed the growth of test crops. The study revealed that Michelia champaca and Schima khasiana are least toxic to germination, growth and yield of various test crops. Although, germination and growth of paddy and soybean was adversely affected by aqueous extracts of tree species, however, magnitude of toxicity was very less which is evident from the dry matter production of various test crops. Rice bean and maize have been found resistant to phytotoxicity. It is therefore; well evident from the data that maize, paddy, rice bean and soybean can be grown successfully in the proximity of Michelia champaca and Schima khasiana
Not Available
No full textNot AvailableStudies conducted on 106 mithun at the National Research Centre on Mithun and
66 free-ranging mithun in Nagaland, India, revealed an infection rate with
bluetongue virus of 86%, using a commercially available competitive enzymelinked
immunosorbent assay. Animals were grouped according to their age: 36 of
1 to 2 years of age, 50 of 2 to 4 years of age and 86 aged 4 years and over. The
highest infection rate (98%) was found in mithun > 4 years old and the lowest
(58%) in those 1 to 2 years old. No statistically significant difference was
observed between infection rates of males (89%) and females (85%). The
infection rate was higher (95%) in free-ranging mithun than in mithun kept under
a semi-intensive system (80%). This is the first report of serological evidence of
antibodies to bluetongue virus in mithun. The possible role of vectors in the
epidemiology of bluetongue virus infection in mithun is discussed brieflyNot Availabl
