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« Previous EntriesOlax zeylanica: An environmentally safe bio-pesticide for the control of the Maize weevil Sitophilus zeamais Mots. (Curculionidae)
Tuesday, December 28th, 2010M.T.H.P. Perera and M.M.S.C. Karunaratne
Department of Zoology, University of Sri Jayewardenepura, Sri Lanka
Leaf powders of seven commonly found plant species, Ocimum graticimum, Morinda citrifolia, Aegle marmelos , Annona squamosa, Annona reticulata, Olax zeylanica and Ricinus communis were screened for their insecticidal activity under laboratory conditions (301 C and 84 – 86% RH) against the maize [...]
Response of low frequency harvesting systems under drier climatic conditions
Tuesday, December 28th, 2010K.V.V.S. Kudaligama1, V.H.L. Rodrigo1, K.M.E.P. Fernando2 and P.A.J. Yapa
1Department of Biochemistry and Physiology, Rubber Research Institute of Sri Lanka
2Department of Botany, University of Sri Jayewardenepura, Sri Lanka
The rubber plantations in Sri Lanka lie mostly in the Wet zone (WZ) of the country and in certain regions in the Intermediate zone (IZ). In the IZ rubber [...]
Effect of different fertilizers on the growth of coconut seedlings, availability of some nutrients and soil microbial activities
Tuesday, December 28th, 2010S.R.M.R. Attanayake1, C.M. Nanayakkara2 and N.A. Tennakoon3
1Agriculture Biotechnology Centre, University of Peradeniya, Sri Lanka
2Department of Plant Sciences, University of Colombo, Sri Lanka
3Soils and Plant Nutrient Division, Coconut Research Institute, Lunuwila, Sri Lanka
The present fertilizer application is manly based on chemical fertilizers which are costly and exerts negative impacts on soil health. Therefore a study was [...]
Livestock farmers strategic response to climate change: Exploring the case of dairy cattle farms in the intermediate zone of Sri Lanka
Monday, December 27th, 2010R.T.D. Yasarathne, J.M.M. Udugama and U.K. Jayasinghe-Mudalige
Department of Agribusiness Management, Wayamba University of Sri Lanka
This study was aimed to examine the adaptation measures used by cattle farmers in the Panduwasnuwara Divisional Secretariat of the Kurunegala District, which holds the largest livestock population in the Low Country Intermediate Zone in Sri Lanka, in response to climate [...]
Effects of dried curry leaves and tea leaves on oxidative rancidity of rice bran
Monday, December 27th, 2010P.H.G.J. De Silva and N.S.B.M. Atapattu
Department of Animal Science, University of Ruhuna, Sri Lanka
Control of the rancidity of rice bran (RB) is difficult due to the oxidative rancidity that persists even after inhibiting lipolytic rancidity by heating. Anti-oxidants are widely used to control the oxidative rancidity. Leaves of some plants such as curry leaves (Murrya [...]
Use of bio- fungicides for controlling powdery mildew disease of Rambutan
Monday, December 27th, 2010P.W. Alahakoon, N.H. Jayawardene, K.C. Madushani and R.K. Nilmini
Fruit Crop Research and Development Center, Department of Agriculture, Horana, Sri Lanka
Powdery mildew of Rambutan (Nephelium lappaceum) incited by the fungus Oidium nephelii attack young leaves, flowers and immature fruits which become discolored and dry off causing fruit quality deterioration and heavy fruit losses. Oidium nephelii is [...]
Comparison of sampling techniques to estimate tree diversity and aboveground biomass in Sinharaja forest Sri Lanka
Thursday, March 4th, 2010M.D.P. Kumarathunge, R.O. Thattil, S.P. Nissanka and P. Pathinayaka
The use of correct sampling techniques is of paramount importance since the precision of estimates greatly depends on it. Different methods of sampling have to be investigated to find out the best sampling technique for a given situation. This study was conducted to determine the best sampling [...]
Forest woodland ecosystem: An insight into the addition of litter through teak plantation
Tuesday, February 2nd, 2010A. K. Mani, S. Manivasakan, S. Vijayabaskaran
Teak is an important tree species grown under plantation conditions for timber requirement. Being a deciduous tree, it favours for accelerated nutrient cycling. A field experiment was conducted in an eighteen year old teak plantation at Forest College and Research Institute, Mettupalayam, Tamil Nadu, India to study the litterfall, [...]
Growth, biomass and carbon accumulation among rubber (Hevea brasiliensis), teak
Tuesday, February 2nd, 2010N. Appuhamy, L. Samarappuli and S. Karunaratne
The study was conducted to compare the biomass accumulation and carbon stocks among rubber, teak and mahogany. Above Ground Biomass of each species were calculated using the allometric models. Mean total tree height of rubber, teak and mahogany were ranging from 0.87 m to 20.32 m, 3.41 m to [...]
Effect of particle size of Coco peat for Greenhouse Tomato (Lycopercicum esculantum
Monday, February 1st, 2010H.K.M.S. Kumarasinghe1 and D.G.D. Ransimala2
Coco peat is a by product of extraction of fiber from coconut husk. It is 100% natural, biodegradable, fibrous and spongiest material. It has high C: N ratio, therefore it take long period to decompose. Also it has high water holding capacity, approximately 7-9 times its own weight. Coco peat contains [...]
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