Parliamentary Papers, Band 10H.M. Stationery Office, 1959 |
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Seite 82
... trees or in isolated groups each consisting of a few trees . On peach trees cover sprays of DDT ( 0-2 per cent . ) proved useless and malathion - protein hydrolysate bait - sprays showed only limited promise . Peach trees cover ...
... trees or in isolated groups each consisting of a few trees . On peach trees cover sprays of DDT ( 0-2 per cent . ) proved useless and malathion - protein hydrolysate bait - sprays showed only limited promise . Peach trees cover ...
Seite 132
... trees were found to be immune from attack . Preference for oviposition on large wounds such as those produced by game was shown by the much higher rate of attack of game - damaged trees compared with undamaged , though pruned trees ...
... trees were found to be immune from attack . Preference for oviposition on large wounds such as those produced by game was shown by the much higher rate of attack of game - damaged trees compared with undamaged , though pruned trees ...
Seite 150
... trees of useful species between one foot and six feet girth remain after logging and should these trees be capable of growing satisfactorily after release , it would appear that they are sufficient to regenerate the stand . The ability ...
... trees of useful species between one foot and six feet girth remain after logging and should these trees be capable of growing satisfactorily after release , it would appear that they are sufficient to regenerate the stand . The ability ...
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acres African Agriculture amount animals application assistance breeding British Guiana capital cattle cent cocoa coffee Colombo Plan Colonial Committee continued Corporation cotton Council countries crop D.Sc Dieldrin disease East Africa economic effect established expenditure experimental experiments export factors Federation fertiliser field finance Fisheries forest Forestry further Gambia Government grass growth haemoglobin important improvement increase industry infection insecticides Institute investigation investment irrigation isoniazid Jamaica Kenya Laboratory leprosy loans maize Malaya Medical Research ment method million Nigeria nitrogen Northern Rhodesia Nyasaland obtained Oil Palm organisation Pakistan pests plant plots problems production Professor programme progress projects protein Region Research Station Research Unit Rhodesia rice Sarawak Scheme season seed seedlings showed Singapore soil species spraying survey Swaziland Tanganyika territories tests tons treatment trees trials Trinidad Tropical Uganda United Kingdom vaccine varieties virus West yield