Browsing Department of Agricultural Biology by Author "Ratnasekera, D"

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Comparison of Competitive Ability of Cultivated Rice and Weedy Rice with Existing Weeds at Seedling Stage

Ratnasekera, D; Dilrukshi, M. K. S.; Himanda, H. L. C.; Subhashi, A. P. T. (2013)

Weeds are the most important biological restraint in rice ecosystems which cause to reduce yield quantitatively and qualitatively. Weedy rice (Oryza sativa L. f. spontanea) is one of the most widespread and problematic ...
ENT PROPERTIES OF PLANT OIL VAPOURS ON PULSE BEETLE (CALLASOBRUCHUS MACULATUS L.) (COLEOPTERA: BRUCHIDAE) IN STORED GREEN GRAM (VIGNA RADIATA WALP.)

Ratnasekera, D; Rajapakse, RHS (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2009-06-12)

The repellent effects of ten oils, Domba (Calophyllum inophyllum L), Batu (Solanam indicum L), leaf oil and bark oil of Cinnamon (Cinnamomum verum Presl.), Mustard oil (Brassica juncea Cross.), Neem oil (Azadiracta ...
Functional trait diversity of wild rice species in Sri Lanka: implications for field identification and application

Sandamal, S; Tennakoon, A; Amarasekera, DABN; Marambe, B; Ratnasekera, D (National Science Foundaton, 2020)

Abstract: The study assessed the variations in morphologically, physiologically and anatomically distinct traits of wild rice species in Sri Lanka; O. nivara, O. rufipogon, O. eichingeri, O. rhizomatis and O. granulata, ...

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