Thousands of rice land races are considered to exist in Bangladesh (Haque and Miah, 1990). Each o... more Thousands of rice land races are considered to exist in Bangladesh (Haque and Miah, 1990). Each of them possesses some special characteristics. Only some of these are unique for quality traits including fineness, aroma, taste and protein contents. Bangladesh has a stock of above 8,000 rice germplasms of which nearly 100 are aromatic (Islam et al., 2016). Cultivation of this rice has been gaining popularity in the country over the recent years, because of its huge demand both for internal consumption and export (Das and Baqui, 2000). About 27% of the total rice cropped area (BBS, 2003), and 12.5% of the total monsoon rice (BBS, 2005) are occupied by aromatic fine rice varieties of Bangladesh. Moreover, the production of aromatic fine rice is profitable due to its high price over low price coarse milled rice (Raju and Reddy, 2000; Sikdar et al., 2008). Recently, some aromatic fine rice varieties being cultivated in Bangladesh are of international standard and attracting the buyers in ...
PurposeThe experiment was conducted to investigate into the allelopathic potential of the aqueous... more PurposeThe experiment was conducted to investigate into the allelopathic potential of the aqueous extracts of different parts of Jatropha curcuson seven selected field crop species. Research method:The leaf, stem, bark, twig, root, pericarp, seed and oilcake extracts of J. curcus at four different concentrations (1:5, 1:10, 1:15 and 1:20 (w/v)) were tested against jute, mungbean, mustard, radish, rice, wheat and tomato. Control i.e. distilled water without extracts was also maintained in each case. The experiments were conducted following completely randomized design with three replications.FindingsExcept few, the aqueous extracts of J. curcas plant parts significantly inhibited the seedling growth of all the test species at concentration more than 1:15 (w/v) whereas, at or below this level stimulated the seedling growth. Percent shoot and root growth inhibition of the test crops varied among J. curcus parts extract from 10 to 100, at 1:5 (w/v) concentration. At the same concentrati...
Thousands of rice land races are considered to exist in Bangladesh (Haque and Miah, 1990). Each o... more Thousands of rice land races are considered to exist in Bangladesh (Haque and Miah, 1990). Each of them possesses some special characteristics. Only some of these are unique for quality traits including fineness, aroma, taste and protein contents. Bangladesh has a stock of above 8,000 rice germplasms of which nearly 100 are aromatic (Islam et al., 2016). Cultivation of this rice has been gaining popularity in the country over the recent years, because of its huge demand both for internal consumption and export (Das and Baqui, 2000). About 27% of the total rice cropped area (BBS, 2003), and 12.5% of the total monsoon rice (BBS, 2005) are occupied by aromatic fine rice varieties of Bangladesh. Moreover, the production of aromatic fine rice is profitable due to its high price over low price coarse milled rice (Raju and Reddy, 2000; Sikdar et al., 2008). Recently, some aromatic fine rice varieties being cultivated in Bangladesh are of international standard and attracting the buyers in ...
PurposeThe experiment was conducted to investigate into the allelopathic potential of the aqueous... more PurposeThe experiment was conducted to investigate into the allelopathic potential of the aqueous extracts of different parts of Jatropha curcuson seven selected field crop species. Research method:The leaf, stem, bark, twig, root, pericarp, seed and oilcake extracts of J. curcus at four different concentrations (1:5, 1:10, 1:15 and 1:20 (w/v)) were tested against jute, mungbean, mustard, radish, rice, wheat and tomato. Control i.e. distilled water without extracts was also maintained in each case. The experiments were conducted following completely randomized design with three replications.FindingsExcept few, the aqueous extracts of J. curcas plant parts significantly inhibited the seedling growth of all the test species at concentration more than 1:15 (w/v) whereas, at or below this level stimulated the seedling growth. Percent shoot and root growth inhibition of the test crops varied among J. curcus parts extract from 10 to 100, at 1:5 (w/v) concentration. At the same concentrati...
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