P. K. Dissanayake

Sabaragamuwa University of Sri Lanka

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Co-Authors

Mohit Gupta

Punjab Agricultural University

D. L. George

University of Queensland

DL George

CJ Birch

University of Tasmania

Masayoshi Shigyo

Yamaguchi University

W. G. C. Wekumbura

Sabaragamuwa University of Sri Lanka

Naoki Yamauchi

Yamaguchi University

H. K. S. G. Gunadasa

Uva Wellassa University

R. M. B. B. B. Dissanayake

Can Chen

Eye & ENT Hospital of Fudan University

Cooperative Institutions

Sabaragamuwa University of Sri Lanka

Universidade Federal Rural de Pernambuco

Universidade Federal de Pernambuco

Yamaguchi University

Institute of Vegetable and Floriculture Science

Université Pelefero Gon Coulibaly

Universidade Federal de Viçosa

University of Peradeniya

National Agriculture and Food Research Organization

Tottori University

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Impact of Coal Combustion Products on Soil Characteristics, Concentration of Elements in Plant Material, Plant Product Safety and Crop Yield

CJ Birch DL George P. K. Dissanayake

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Optimization of quality in exported <i>Polyscias balfouriana</i> "Marginata" by using different shade levels

Journal of Agricultural Sciences – Sri Lanka (2012)

H. K. S. G. Gunadasa P. K. Dissanayake

Foliage plant industry in Sri Lanka often has to face difficulties due to problems associated with the qualities of the final product of plant especially, pale green colour leaves and poor quality shoots, which are not accept by the buyers in export market. An investigation was carried out to develop the green colour and other qualities of Polyscias balfouriana “Marginata” (PBM) using different shade levels within 10 weeks. Canes, 10 cm long were used as planting materials and planted in coir beds under, 55, 60, 65, 70, 75, 80, 85, 90 and 95% shade levels. Other qualities evaluated for PBM were shoot length, leaf area, number of leaves per shoot. It was evident that the preferable forest green colour was achieved significantly (p = 0.001) at the highest shade levels of 85 and 90%. The leaf area of 14 cm2 and, sprout of 7 cm to 7.5 cm length also achieved at highest shade levels of 85% and 90%. Percentage of canes with 3 or more than 3 leaves per shoot was significantly higher than that of canes with less than 3 leaves at shade levels higher than the control. The higher percentage of acceptable canes with 3 or more than 3 leaves was found in shade level of 80%, 85% and 90 %. With these findings it can be concluded that the use of high shade levels such as 85% and 90% at foliage nurseries are favorable to obtain quality PBM plant for export market. DOI: http://dx.doi.org/10.4038/jas.v7i2.4403 The Journal of Agricultural Sciences, 2012, vol.7, no 2 58-65

Myrica rubra

Coir

10.4038/jas.v7i2.4403

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Citations (1)

Superoxide Dismutase Gene Might Play a Major Role in Tapping Panel Dryness of Rubber (Hevea brasiliensis Muell. Arg.).

P. K. G. S. S Bandara L. H. N Perera J. B. D. A. P. Kumara P. K. Dissanayake

Dryness

Tapping

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Effect of light, gibberellic acid and abscisic acid on germination of guayule (Parthenium argentatum Gray) seed

Industrial Crops and Products (2010)

P. K. Dissanayake D. L. George Mohit Gupta

Gibberellic acid

Phytochrome

Far-red

Darkness

10.1016/j.indcrop.2010.03.012

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Citations (36)

Natural rubber production from Guayule in Australia

P. K. Dissanayake D. L. George Mohit Gupta

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Improved guayule lines outperform old lines in south-east Queensland

Industrial Crops and Products (2007)

P. K. Dissanayake D. L. George Mohit Gupta

10.1016/j.indcrop.2006.09.002

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Citations (10)

Evaluation of improved lines of guayule (Parthenium argentatum Gray) for commercial rubber

P. K. Dissanayake D. L. George Mohit Gupta

Parthenium

Gray (unit)

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Impact of coal combustion products on soil characteristics, concentration of elements in plants, product safety and yield

CJ Birch DL George P. K. Dissanayake

Combustion products

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Advances and Trends in Agricultural Sciences Vol. 1

Book Publisher International (a part of SCIENCEDOMAIN International) (2019)

Shakirat Oloruntoyin Ajenifujah‐Solebo Ivan Ingelbrecht N. R. Isu Omotoye Olorode Kieko Saito

10.9734/bpi/atias/v1

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Effect of Light Colour Spectrum from Different Sources on Crop Growth and Phytochemical Properties: With Special Reference to Tomato (Solanum lycopersicum L.) under Colour Shading

Book Publisher International (a part of SCIENCEDOMAIN International) (2021)

P. K. Dissanayake W. G. C. Wekumbura

Different wavelengths of light are associated with various functions in plant development. Plants have a range of photoreceptors to detect these wavelengths. The changes in the light quality (wavelength) influences various physiological processes such as intra and inter-cellular differentiation, Different sources of light seem to be affected differently on different growth stages of plants. Light Emitting Diode (LED) colour spectrum, fluorescent tube light, High intensity discharge (HID) lamps and transparent shading are some of examples of source of colour of light on plants. Experiments that conducted on seed germination of different plant under different light colour have showed different effects on germination. There is a high variation of seedling height of tomato under different colour transparent shading. Ascorbic acid content in tomato fruit is significantly high under yellow, green and colourless shading. We can propose green and red shading on tomato plant is more important for healthy lycopene rich fruit production than direct high intensity light. Pericarp thickness is one of the most valuable character of fruit, which important for postharvest life, was significantly high under green shading.

Shading

Light intensity

10.9734/bpi/cras/v9/2303e

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