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U. G. S. Amarasinghe

Publications (6)

Changes in Yield Potential of Traditional Rice Cultivars with Variability in Plant Height, Tillers Per Plant, Fertility and Days to Maturity

A. L. Ranawake & U. G. S. Amarasinghe · Journal of Scientific Research and Reports · 2014

Aims: To understand the changes in yield potential of traditional rice cultivars with different plant height, tillers per plant, fertility and days to maturity. Study Design: Completely randomized block design with four replicates. Twenty plants were evaluated in each replicate....

Open access Research Article 10.9734/JSRR/2015/12042

Effect of Different Levels of Inorganic Fertilizer on Filled Grain Percentage of 50 Sri Lankan Traditional Rice Cultivars

A. L. Ranawake & U. G. S. Amarasinghe · Journal of Scientific Research and Reports · 2014

Aims: To study the different levels of inorganic fertilizer on filled grain percentage of fifty Sri Lankan traditional rice cultivars. Study Design: RCBD with four replicates. Twenty plants of each replicate were evaluated. Place and Duration of Study: A field experiment was carr...

Open access Research Article 10.9734/JSRR/2015/12571

Diversity Analysis of Some Traditional Rice Genotypes in Sri Lanka

A. L. Ranawake, U. G. S. Amarasinghe & S. G. J. N. Senanayake · Biotechnology Journal International · 2014

Aims: To study the diversity of traditional rice genotypes in Sri Lanka using cluster analysis and principle component analysis. Study Design:  The experiment was carried out using one hundred rice genotypes with six modern rice cultivars and ninety four traditional rice cultivar...

Open access Research Article 10.9734/BBJ/2014/12547

Relationship of Yield and Yield Related Traits of Some Traditional Rice Cultivars in Sri Lanka as Described by Correlation Analysis

A. L. Ranawake & U. G. S. Amarasinghe · Journal of Scientific Research and Reports · 2014

Aims: To understand the relationship between individual trait and yield of one hundred rice cultivars according to Pearson’s correlation coefficient. Study Design: Completely randomized block design with four replicates. Twenty plants were evaluated in each replicate and eighty p...

Open access Research Article 10.9734/JSRR/2014/12050

Fertilizer Response of Traditional Rice Cultivars at Four Different Levels as Analyzed by Multi-Criteria Decision Making Model

A. L. Ranawake, U. G. S. Amarasinghe & S. G. J. N. Senanayake · International Journal of Plant & Soil Science · 2014

Aims: to understand the effect of various polygenic traits on grain yield of traditional rice cultivars at four different fertilizer levels namely no fertilizer, x ½ recommended dose (x ½ RD), recommended dose (RD) andx2 recommended dose (x 2 RD). Study Design: Randomized complet...

Open access Research Article 10.9734/IJPSS/2014/11329

Effect of Days to Flowering on Plant Height and Yield of Rice (Oryza sativa L.)

A. L. Ranawake, U. G. S. Amarasinghe, M. J. Hewage & N. G. J. Pradeepika · International Journal of Plant & Soil Science · 2014

Aims: To study effect of days to flowering on the plant height and yield of rice. Study Design: Experiment was carried out according to the complete randomized block design. Four replications were designed for the experiment and each replicate consisted of 3 lines and twenty plan...

Open access Research Article 10.9734/IJPSS/2014/11421