4.Journals Published in Sri Lanka
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Item Shade trees(1964) Hasselo, H.N.Item Chemical control of weeds(1964) Hasselo, H.N.Item Field experiments on the chemical control of shot-hole borer (Xyleborus fornicatus Eichh) on tea soon after pruning(1962) Judenko, E.; Shanmugam, C.; Hasselo, H.N.Item Tea root show effective depth of soil(TRI. Talawakele, 1962) Hasselo, H.N.Item Field experiments on the chemical control of short-hole borer (Xyleborus fornicatus eichh.) on tea soon after prunning(TRI. Talawakele, 1962) Judenko, E.; Shanmugam, C.; Hasselo, H.N.Item An evaluation of the monthly variations in yields of tea of two estates(The Tea Research Institute. Talawakele, 1963) Hasselo, H.N.Item Chemical weed control in tea(The Tea Research Institute. Talawakele, 1965) Hasselo, H.N.; Sandanam, S.Item The nitrogen, potassium, phosphorus, calcium, magnesium, sodium, manganese, iron, copper, boron, zinc, molybdenum and aluminium contents of tea leaves of increasing age(The Tea Research Institute. Talawakele, 1965) Hasselo, H.N.Item Some observations on the growth rate of shaded and unshaded tea on sloping land(The Tea Research Institute. Talawakele, 1964) Hasselo, H.N.Item Productivity gradients on sloping tea land in ceylon(The Tea Research Institute. Talawakele, 1964) Hasselo, H.N.