Sandya Ariyawansha

Sandya Ariyawansha
Sugarcane Research Institute, Sri Lanka · Division of Economics, Biometry and IT

MPhil (Genetics and Plant Breeding). Bsc (agric.)

About

45
Publications
11,709
Reads
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54
Citations
Additional affiliations
January 2013 - present
Sugarcane Research Institute, Sri Lanka
Position
  • Research Officer
Description
  • Senior Biometrician
June 2008 - January 2013
Sugarcane Research Institute, Sri Lanka
Position
  • Research Officer
Description
  • Biometrician
January 2000 - June 2008
Sugarcane Research Institute, Sri Lanka
Position
  • Research Officer
Description
  • Sugarcane Breeder
Education
October 2010 - January 2013
University of Peradeniya
Field of study
  • Genetics and Plant Breeding
January 1990 - December 1994
University of Peradeniya
Field of study
  • Crop Science and Biometry

Publications

Publications (45)
Article
Full-text available
This study investigates the effects of N, P and K on cane yield and quality of the plant crop of two new sugarcane varieties, SL 96 128 and SL 96 328 and determines the optimum level of N. A field trial was carried out in a confounded-factorial design with 18 treatment combinations with 5 levels ofN and 4 levels of each P and K, with 3 replicates a...
Article
Full-text available
Sugarcane harvesting requires a significant amount of energy and time to manage dry leaves after the harvesting process. Therefore, the objective of this study was to minimize the energy requirement to process the cane and dry leaves’ harvesting (CDLH) for sugarcane while, at the same time, maximizing sugar production from cane and energy from dry...
Conference Paper
Full-text available
Ariyawansha, B.D.S.K. (2014). Adaptability of some sugarcane varieties in different environments in Sri Lanka. In A.P.Keerthipala (Ed). Proceedings of the 5th Symposium on Plantation Crop Research “Towards a green plantation economy”. Sugarcane Research Institute (70190), Sri Lanka. pp 39-52.
Article
Full-text available
Utilisation of the sugarcane industry by-products in Sri Lanka has immense potential. Hence, this preliminary investigation was conducted to find out the feasibility to produce organic fertiliser from the sugarcane industry by-products and to evaluate their nutritional characteristics favourable for sugarcane plant growth. Two consecutive experimen...
Article
Seed cane treatments play a crucial role in managing the primary transmission of sugarcane diseases, ensuring the establishment of healthy sugarcane nurseries for commercial plantations. Leaf scald is one of the major diseases in sugarcane that is primarily transmitted via infected seed cane. The present study was done to test the effectiveness of...
Article
The low sugar recovery rate is becoming a key issue in the sugar sector in Sri Lanka. In order to improve cane quality and sugar recovery, some countries use zinc sulphate (ZnSO4) as a soil microelement fertiliser. Therefore, this study was conducted to assess the impact of ZnSO4 on soil chemical properties, cane yield and cane quality of the sugar...
Conference Paper
Full-text available
Low sugar recovery experienced during the last few years has become a challenging issue for the Sri Lankan sugarcane industry. Enhancement of cane quality is one of the solutions to overcome this problem. The application of Zinc sulphate (ZnSO4) as a soil amendment is practised in some countries to enhance the quality of the cane. Therefore, this s...
Article
Full-text available
This study was conducted treating with Milk of Lime to reach different pH levels (T1-with Initial pH, T2, T3 and T4 with 6.5, 7.5 and 8.5 of pH respectively) to determine the optimum pre-liming pH which could result in best cane juice clarification in Sri Lankan sugar industries. The experiment design used was RCBD with five replicates. ANOVA follo...
Preprint
Full-text available
This study was conducted treating with Milk of Lime to reach different pH levels (T1- with Initial pH, T2, T3 and T4 with 6.5, 7.5 and 8.5 of pH respectively) to determine the optimum pre-liming pH which could result in best cane juice clarification in Sri Lankan sugar industries. The experiment design used was RCBD with five replicates. ANOVA foll...
Article
Full-text available
This experiment was conducted to evaluate yield performance and White Leaf Disease (WLD) reaction of fifty commercial and near-commercial sugarcane varieties grown in a field with severe WLD incidence at Pelwatte. The tested varieties were planted in every alternate row of a heavily-WLD-infected field of first ratoon crop established with variety S...
Conference Paper
Full-text available
In this study, an assessment of the reaction of eleven (11) Brazilian sugarcane varieties to smut disease was carried out to identify the resistant/tolerant parents for sugarcane hybridization. A field experiment was carried out at the research farm of the Sugarcane Research Institute, Uda Walawe, Sri Lanka, where the annual average rainfall is abo...
Article
Full-text available
This study evaluates the possibility of incorporating High-grade Eppawala Rock Phosphate (HERP) as an alternative to Triple Super Phosphate (TSP), a Phosphorous (P) fertiliser for sugarcane cultivation in Sri Lanka. A field trial was carried out with 6 treatments comprising of different levels of TSP and HERP in a Randomised Complete Block Design (...
Technical Report
Knowledge on the variation of ratoon yields with respect to different ratoon management practices adopted by farmers and replanting the crop in an optimum crop cycle are important to improve profitability of sugar industry. This study was conducted to identify factors affecting ratoon yield variation and to determine the optimum replanting cycle o...
Article
Full-text available
Ariyawansha, B.D.S.K. (2014). Adaptability of some sugarcane varieties in different environments in Sri Lanka. Sugarcane Sri Lanka, Volume.01, p 1-14. Abstract This study evaluated the genotype-environment interaction (GEI) of fourty sugarcane varieties in five major sugarcane growing environments in Sri Lanka using Additive Main effects and Mu...
Article
Full-text available
Assessment of Varietal Stability of Sugarcane in Sri Lanka BDSK Ariyawansha and ALT Perera2 1 Division of Economics Biometry and Information Technology, Sugarcane Research Institute, Uda Walawe, Sri Lanka., 2 University of Peradeniya, Sri Lanka Abstract The productivity and yielding stability of forty sugarcane genotypes;16 locally-bred, 06 loca...
Conference Paper
Full-text available
Estimation of Heritability of Sugarcane (Saccharum spp. hybrid) Yield Components through Analysis of Poly-cross Families. Wijesuriya, A., Ariyawansha, B.D.S.K. and Perera, A.L.T. (2014). Assessment of Varietal Stability of Sugarcane in Sri Lanka: Proceedings of International Conclave on Sugar Crops: Sweeteners and Green Energy from Sugar Crops: Eme...
Conference Paper
Full-text available
Identification of different Smut (Ustilago scitaminea) strains in Sri Lanka. A.N.W.S. Thushari and Ariyawansha, B.D.S.K. (2014). : Proceedings of International Conclave on Sugar Crops: Sweeteners and Green Energy from Sugar Crops: Emerging Technologies. February 15-17, 2014, held at Indian Institute of Sugarcane Research, Lucknow, India.
Thesis
Full-text available
This study was conducted to evaluate genotype environment interactions and adaptability of forty sugarcane genotypes across five major sugarcane growing environments in Sri Lanka to obtain a proper understanding of the relative magnitude of GEI in genotype evaluations and identify adaptable sugarcane genotypes by applying appropriate statistical me...
Poster
Full-text available
While having undertaken work under the AgMIP program across Sri Lanka for rice and sugarcane dominated farming systems at six institutions, we report selectively here on the analysis for the North-Western Kurunegala district for Rice. Importance: Rice is the staple food of 21 million Sri Lankans and is cultivated over 4,800 sq km. Previous work sho...
Conference Paper
Full-text available
This study was conducted to asses the stability of cane and sugar yields of six elite sugarcane varieties to identify their adaptability across different environments. Six sugarcane varieties, namely, Co 775 (standard variety), SL 83 06, SL 88 116, SL 89 1673, SL 92 4918 and SL 92 5588 were evaluated for their cane and sugar yields and the yield st...
Conference Paper
Full-text available
Proper understanding of inheritance of cane and sugar yield components is of paramount importance in devising efficient systems in parent and progeny selection in sugarcane. In this study, ten characteristics that determine cane yield, sugar and fibre contents of progenies derived from twenty biparental families were analysed with their parents and...
Conference Paper
Full-text available
The benefits of mulching in ratoon crops are well documented, but mulching in plant crops of sugarcane is a new concept. The objective of this study was to investigate the feasibility and benefit of using Gliricidia leaves and sugarcane trash as a mulch in a plant crop of sugarcane to enhance the productivity of low productive sugarcane lands. Thus...
Article
Full-text available
Daily rainfall data of 30 years from 1982 to 2011 at Pelwatte , Sri Lanka were analysed to examine the occurrence of dry spells, onset and withdrawal of seasonal rains , length of the rainy season and distribution of rainfall within a year and trend of rainfall variation over the years in relation to cultivation of sugarcane in the area. The probab...
Conference Paper
Meristem culture of sugarcane is used to eliminate systemic pathogens to produce disease-free planting material. Though, there is a standard protocol for sugarcane meristem culture, perfection of this protocol with respect to phyto-hormone levels is necessary to maximise the efficiency of this technique when different varieties are used. This rese...
Conference Paper
Full-text available
Abstract The knowledge of the characteristics of rainfall is important for planning for better yields from rain-fed sugarcane cultivation. This article analyses available daily rainfall data of 25 years from 1984 to 2008 at Sevanagala, Sri Lanka to examine occurrence of dry spells, start and end of rain, length of the rainy season, distribution of...
Conference Paper
Abstract This study investigates the changes in climates in Sevanagala and Pelwatte sugar mill areas of Sri Lanka from 1986 to 2009 and their impacts on sugarcane cultivation, based on meteorological data collected in main meteorological stations of the two locations. The temporal trends of monthly climatic variables were analysed using Seasonal Ma...
Conference Paper
A spatial trial employing 2-way parallel row systematic design (Experiment 1) was conducted to find out optimal spatial combinations, viz., between rows and between plants within rows for transplanting sugarcane as a monocrop. This experiment that used plants produced through Lateral Shoot Multiplication (LSM) technique, generated knowledge on opti...
Conference Paper
Full-text available
This study aimed to identify farmers and field-level extension officers’ perception on new sugarcane varieties, at their near commercial stage, to facilitate the adoption process of new sugarcane verities in the local sugar industry. Twenty near commercial varieties in each adaptability trial were evaluated at Uda Walawe and Siyambalanduwa, by two...
Poster
Full-text available
A study was carried out to identify suitable sugarcane varieties for commercial cultivation in agro-ecological zone IL1c (Intermediate Zone Low Country 1 c with 1300 mm annual rainfall and rolling, undulating or flat terrain) in proposed Bibile sugar project area during November 2007 – December 2008. Sixteen sugarcane varieties including commercial...
Article
Full-text available
The lateral shoot multiplication method practised in Japan to produce sugarcane planting material was assessed to examine its economic merits/demerits as compared to the conventional method of seedcane production and planting of seed setts under Sri Lankan conditions. The assessment was based on multiplication rate, field:nursery ratio and saving o...
Article
A damage level-based Action Threshold (AT) level was determined for the sugarcane internode borer (INB)Chilo sacchariphagus indicus (Kapur) in Sri Lanka. Two experiments, one in 1997/ 1998 as early planting crop and the other in 1999/2000 as late planting crop were conducted with the variety Co 775 at Uda Walawe, Sri Lanka. The experiments included...
Article
Full-text available
Seven sugarcane varieties were tested for production of lateral shoots, rate and pattern of lateral shoot multiplication (LSM) after successive de-topping operations on mother stalks, primary and secondary lateral shoots. Number of lateral shoots produced under shaded and non-shaded conditions revealed that non-shaded condition is more conducive fo...
Article
Full-text available
Increasing water use efficiency (WUE), which is defined as the biomass increase per unit of water transpired, is a promising avenue for crop yield improvement, especially in drought-prone environments. The present study tested whether significant inter-varietal variation exists for WUE in common bean (Phaseolus vulgaris L.) under well-watered and w...
Thesis
ABSTRACT Water use efficiency is defined as the amount of dry matter produced per unit of transpiration. It is one of the most important factors affecting crop productivity, particularly under water-limiting conditions. This study was conducted to in investigate whether water use efficiency is a constant parameter or a variable depending on the di...

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