Browsing by Author "Sivachandiran, S."

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Agronomic evaluation of brinjal (Solanum melongena L.) and groundnut (Arachis hypogaea L.) intercropping system
(Gampaha Wickramarachchi Ayurveda Institute, 2009) Prashaanth, R.; Seran, T.H.; Brintha, I.; Sivachandiran, S.
Effect of Different Border Crops and Fertilizer Regimes on Capsicum Growth and Yield
(University of Kelaniya, 2012) Ramesh, M.; Sivachandiran, S.
A study was carried out to access the effect of different border crops and fertilizer regime on capsicum plant growth and yield at the Agricultural Research Station, Thirunelvely, in 2009. The experiment was carried in a split plot design with four replicates, consisting of 12 treatment combinations, four different border crops (maize, chrysanthemum, sunflower, finger millet) and three different fertilizer levels (recommended level of inorganic fertilizer with organic fertilizer, ½ recommended level of inorganic fertilizer with organic fertilizer, and only organic fertilizer). Capsicum was planted at recommended spacing. Other management practices were performed as per recommendation of the Department of Agriculture. Growth and yield parameters were recorded and analyzed at α = 0.05 using SAS statistical package. The results revealed that there were no significant differences among growth parameters in the border crop until 4th week after transplanting and thereafter significant differences were observed among growth parameters. Growth parameters significantly differed among the fertilizer treatments. Highest yield was recorded in maize bordered crops at recommended level of inorganic fertilizer with organic fertilizer and the lowest yield was recorded in finger millet bordered crops with organic fertilizer only. However, yield is not significantly different among recommended level of organic fertilizer and half recommended level of organic fertilizer. Lowest level of leaf curl complex incidence was observed under the finger millet bordered crops and the lowest level was observed in maize bordered crops. It can be concluded that capsicum can be cultivated with less incidence of leaf curl with half recommended inorganic fertilizer and maize as a border crop
Variability Studies on Karuthacolomban Mangoes (Mangifera indica L.) Based on Physical Parameters in Thenmaradchi Division of Jaffna, Sri Lanka
(University of Kelaniya, 2012) Jeyavanan, K.; Nishanthan, K.; Sivachandiran, S.
Karuthacolomban is the well known mango type cultivated in Jaffna district, with high consumer preference. But there is no consistence in the physical characters found among the existing plants. To classify the different types of Karuthacolomban cultivars based on physical parameters, a study was carried out in Thenmaradchi division of Jaffna Peninsula. Plants were selected from three grama niladhari divisions and labeled, and data were collected and tabulated. Sixteen karuthcolomban trees were selected through purposive sampling methods. Principal component analysis was carried out to characterize the physical properties. Cluster analysis was performed to group the plants based on their similarities. From the dendrogram, four clusters are identified. Based on these analyses, plants grouped in cluster III and IV have shown the promising physical characters. Cultivars with higher mean for weight of fruit (> 300 g), flesh (> 220 g), peel (> 60 g) and stone (>32g) and moisture content (< 85%) were grouped into these two clusters. No significant difference was recorded for stone length, fruit diameter and pulp to stone ratio among these clusters. Based on these analyses, plants which are grouped into cluster III and IV were selected as better types. Further molecular level study is needed to confirm these differences before using these plants as mother plants.