Volume 18 -

Issue 1 - 1990

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Research Articles

A man’s role in the degradation of soil and water resources in Sri Lanka: a historical perspective

P. Wickramagamage
- PDF (EN)
28 Mar 1990

18(1):1-16
An evaluation of the numerical criterion for "positive" with skin tests using Mycobacterium leprae antigens

M. R. M. Pinto, N. B. Eriyagaima, S. Sivarjasingham, E. M. Ekanayake, Thilakanjali M. Gamage
- PDF (EN)
28 Mar 1990

18(1):17-26
Pod yield of winged bean after chemical treatment for Choanephora blight disease

S. A. Gunasekera, W. K. N. Shanthichandra
- PDF (EN)
28 Mar 1990

18(1):27-30
The distribution of the paddy nematode, Hirschmanniella oryzae in Sri Lanka

H. M. Rohini K. Ekanayake, U. B. Ekanayake
- PDF (EN)
28 Mar 1990

18(1):31-36
Efficiency of the main fishing gears used in prawn fishery in the Jaffna lagoon

K. Chitravadivelu
- PDF (EN)
28 Mar 1990

18(1):37-52
Antimotility effects of Piper betele (L.) leaf extract on washed human spermatozoa

W. D. Ratnasooriya, K. G. I. Jayawardena, G. A. S. Premakumara
- PDF (EN)
28 Mar 1990

18(1):53-60
A study to determine factors which could influence the population of the ecto-commensal temnocephalid Paracaridinicola platei (Fernando, 1952) baer, 1953

Shirani Nathanael
- PDF (EN)
28 Mar 1990

18(1):61-69
Biological activity of some steam distillates from leaves of ten species of Rutaceous plants

B. M. R. Bandara, C. M. Hewage, D. H. L. W. Jayamanne, V. Karunaratne, N. K. B. Adikaram, K. A. N. P. Bandara, M. R. M. Pinto, D. S. A. Wijesundara
- PDF (EN)
28 Mar 1990

18(1):71-77
Survey of some rice insect pests and their predators in three districts of Sri Lanka

G. F. Rajendram, Francesca R. Devarajah
- PDF (EN)
28 Mar 1990

18(1):79-92

Journal of the National Science Foundation of Sri Lanka

Volume 18 -

Issue 1 - 1990

Research Articles

A man’s role in the degradation of soil and water resources in Sri Lanka: a historical perspective

An evaluation of the numerical criterion for "positive" with skin tests using Mycobacterium leprae antigens

Pod yield of winged bean after chemical treatment for Choanephora blight disease

The distribution of the paddy nematode, Hirschmanniella oryzae in Sri Lanka

Efficiency of the main fishing gears used in prawn fishery in the Jaffna lagoon

Antimotility effects of Piper betele (L.) leaf extract on washed human spermatozoa

A study to determine factors which could influence the population of the ecto-commensal temnocephalid Paracaridinicola platei (Fernando, 1952) baer, 1953

Biological activity of some steam distillates from leaves of ten species of Rutaceous plants

Survey of some rice insect pests and their predators in three districts of Sri Lanka

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