Browsing Chemistry by Author "Abeywickrama, K.P."

Now showing items 1-20 of 35

A study of synergistic effects of some Sri Lankan essential oils against cowpea bruchids

Paranagama, P.A.; Adhikari, A.A.C.K.; Abeywickrama, K.P.; Bandara, K.A.N.P. (Callosobruchusmaculatus,Proceedings of eleventh Asian symposium on Medicinal plants, Spices and Other Natural Products, Kunming, China, 2003)
Aflatoxigenic Aspergillus flavus and aflatoxin formation in selected spices during storage

Rajasinghe, M.; Abeywickrama, K.P.; Jayasekera, R. (2009)

Proliferation of aflatoxigenic fungi and accumulation of aflatoxins take place during storage of spices at various environmental conditions. The objective of this research was to identify the aflatoxigenic fungal species ...
An integrated strategy to control post-harvest decay of Embul banana by combining essential oils with modified atmosphere packaging

Jayawardena, B.M.; Abeywickrama, K.P. (International Journal of Food science & Technology, 2007)

Mature Embul (Musa, AAB) bananas were treated with emulsions of either cinnamon bark or leaf (Cinnamomum zeylanicum) or clove (Syzygium aromaticum) oils to control post-harvest diseases, packed under modified atmosphere ...
Behavioural Studies of Cowpea Seed Bruchid, Callosobruchus maculatus (F.) Against Volatile Leaf Extracts of Lemongrass, Neem and Curry Leaf

Adhikari, A.A.C.K.; Paranagama, P.A.; Abeywickrama, K.P.; Bandara, K.A.N.P. (Tropical Agricultural Research, 2002)
Bioactivity of leaf volatiles of Azadirachta indica A. and Murraya koenigii (spreng) against Sitophilus orysae (L.) (Coleoptera: Curculionidae)

Paranagama, P.A.; Abeysekera, K.H.T.; Nugeliyadde, L.; Abeywickrama, K.P. (Tropical Agricultural Research and Extension, 2002)
Bioactivity of the essential oil of Cymbopogon citratus (Lemongrass) on Sitophllus oryzae(L) (Coleoptera : Curcuolionidae) [Rice Weewil]

Paranagama, P.A.; Jayaratne, K.H.T.; Nugeliyadde, L.; Abeywickrama, K.P. (Sri Lanka Association for the Advancement of Science (SLAAS), 2001)
Bioactivity of the essential oil of lemongrass, (Cymbopogon citratus) against rice weevil-Sitophilus oryzae(L.) and grain moth-Sitorroga cerealella (Olivier)

Jayaratne, K.H.T.; Paranagama, P.A.; Nugeliyadde, L.; Abeywickrama, K.P. (Annual Research Symposium, Faculty of Graduate Studies, University of Kelaniya, 2001)
Bioactivity of volatile constitutents of Sri Lankan plants against cowpea bruchids, Callosobruchus maculatus

Paranagama, P.A.; Abeywickrama, K.P.; Bandara, K.A.N.P.; Adhikari, A.A.C.K. (Proceedings of AFASSA Regional Symposium on Natural Products, 2004)
Cymbopogon citratus (lemongrass) and citral a+ b spray treatments alone or in combination with sodium bicarbonate in controlling crown rot in Embul banana (Musa acuminata AAB)

Abeywickrama, K.P.; Kularathna, L.; Sarananda, K.; Abeygunawardena, D. (2004)

The mounting pressure against synthetic fungicidal dips and sprays, restrict their use in controlling crown rot, a major post-harvest disease in banana. Generally regarded as safe (GRAS) compounds have a great potential ...
Deterrent effects of some Sri Lankan essential oils on oviposition and progeny production of the cowpea bruchid, Callosobruchus maculatus (F.)(Coleoptera; Bruchidae)

Paranagama, P.; Adhikari, C.; Abeywickrama, K.P.; Bandara, P. (2003)

Essential oils extracted from five plant materials were tested on oviposition and progeny production of F1 adult of cowpea bruchid, Callosobruchus maculatus on cowpea seeds. All oils tested showed a significant inhibition ...
Effect of Chemical Pretreatments on the Quality of Minimally Processed Pineapple Stored in Polystyrene Packages

Ediriweera, S.; Abeywickrama, K.P.; Latifah, M. (2012)

Minimally processed pineapple (Ananas comosus L.) cv. Mauritius stored at cold temperature for seven days were evaluated for physicochemical, sensory and microbiological qualities. Pineapple pieces were treated with 1% ...
Effect of coconut (Cocos nucifera) water extract on the development of adventitious roots in Polyscias fillicifolia stem cuttings

Jayawardena, B.M.; Agampodi, V.A.; Abeywickrama, K.P. (The Journal of Agricultural Sciences - Sri Lanka, 2021)

Purpose Vegetative propagation continues to be a popular method to propagate ornamental plant species. Coconut water (CW) can be considered as an abundant source of hormones and other plant growth regulators (PGRs). In ...
Effect of the essential oil of Cymbopogon nardus on Aspergillus flavus Link isolated from Sri Lankan paddy and rice

Paranagama, P.A.; Abeysekera, K.H.T.; Nugeliyadde, L.; Abeywickrama, K.P. (University of Kelaniya, 2002)
Effect of the essential oils of Cymbopogon citratus, C. nardus and Cinnamomum zeylanicum on pest incidence and grain quality of rough rice (paddy) stored in an enclosed seed box

Paranagama, P.A.; Abeysekera, T.; Nugaliyadde, L.; Abeywickrama, K.P. (WFL Publisher, 2003)

The protective effect of the essential oils of Cymbopogon citratus, C. nardus and Cinnamomum zeylanicum leaf on paddy stored in wooden boxes lined with aluminium foil were evaluated. After 168 days of storage in oil treated ...
Effect of volatile constituents of Curry leaf, Murraya koenigii on cowpea seed bruchid, Callosobruchu smaculatus (F.) in stored cowpea

Adhikari, A.A.C.K.; Paranagama, P.A.; Bandara, K.A.N.P.; Abeywickrama, K.P. (University of Kelaniya, 2001)
The efficacy of methanol extracts of leaves of lemongrass- Cymbopogon citratus (DC) Stapf and Curry leaf – Murraya koinigii Spreng on Callosobruchus maculatus

Paranagama, P.A.; Adhikari, A.A.C.K.; Abeywickrama, K.P.; Bandara, K.A.N.P. (Proceedings of Sri Lanka Association of Advancement of Science, 2002)
Electroantennograme and behavioral responses of male and female Callosobruchus maculatus (F.) to essential oil of lemongrass Cymbopogon citratus (Stapf)

Paranagama, P.A.; Adhikari, A.A.C.K.; Abeywickrama, K.P.; Bandara, K.A.N.P. (Annual Research Symposium, 2002)
Foliage preservatives for vase life extension of two dieffenbachia species

Thambugala, S.; Abeywickrama, K.P.; Karunarathna, S. (2010)

Cut foliage of Dieffenbachia maculata and Dieffenbachia amoena were subjected to continuous treatment with several foliage preservatives and export simulation. The preservatives used were 1.75% of sodium hypochlorite, 5% ...
Fungicidal activity of essential oils of Cinnamomum zeylanicum (L.) and Syzygium aromaticum (L.) Merr et L.M.Perry against crown rot and anthracnose pathogens isolated from banana

Ranasinghe, L.S.; Jayawardena, B.M.; Abeywickrama, K.P. (Letters in Applied microbiology, 2002)

Aims: To develop a post-harvest treatment system against post-harvest fungal pathogens of banana using natural products. Methods and Results:Colletotrichum musae was isolated and identified as the causative agent responsible ...
Fungicidal and anti-aflatoxigenic effects of the essential oil of Cymbopogon citratus (DC.) Stapf. (lemongrass) against Aspergillus flavus Link. isolated from stored rice

Paranagama, P.A.; Abeysekera, K.H.T.; Abeywickrama, K.P.; Nugaliyadde, L. (The Society for Applied Microbiology, 2003)

Aims: To develop a natural fungicide against aflatoxigenic fungi, to protect stored rice, using the essential oil of lemongrass. Methods and Results: Aspergillus flavus Link. was isolated from stored rice and identified ...

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