PART TIL 
10. Co-operaTIVE Corton. FERTILIZER EXPERIMENTS : — 
In representative Cotton areas ... 2. Ee 20s 3 
11. Seep MurrtipLicATION FARMS (BARRING EXPERIMENTAL STATIONS) : 
In suitable areas ... ae, er 5 cor a 10) 
Mr. KOCH, in reply to a question by Mr. Simpson, stated that 
experiments were being conducted to determine the best rotations for 
different areas. The rotations now being employed were three or four 
course rotations containing a legume. 
Mr. HOLM asked what view was held regarding cotton as a 
profitable crop. He would like to have some expression by the 
Conference regarding the effect upon the yield obtained through 
European supervision and labour. In Uganda, cotton was produced 
purely by Africans; in South Africa by Europeans with African labour; 
in Queensland purely by European effort. 
Mr. KOCH said Cotton would give a profitable return in South 
Africa under conditions when other crops would not be profitable. At 
9d. per lb. cotton cultivation would pay. 
Mr. MILLIGAN said a yield of a bale of seed cotton, or about 
150 to 160 lbs. of lint per acre is considered to be a fair yield. The 
actual outlay on the crop does not on an average exceed £3 per acre. 
Mr. CAMERON said that in Southern Rhodesia the cost of 
production was considered to be £2 10s. per acre. It had been 
estimated that the cost of harvesting cotton was very little more 
expensive than that of maize. 
In the course of a discussion upon the average yields of cotton, 
it was stated that in Uganda 150 bs. could be accepted as an average. 
In Tanganyika 120 lbs. had been reached, but the average was lower. 
In the United States the average yield was less than 170 lbs. per acre. 
Mr. SIMPSON said that in Uganda the policy adopted to increase 
the yield of cotton was, firstly, the issue of selected seed; secondly, 
instruction in better cultural methods. 
Mr. WORTLEY remarked that in Nyasaland it appeared that the 
native yields were quite as high as those of the European. 
Mr. KIRBY said that in Tanganyika, methods similar to those 
employed in Uganda were followed for the improvement of the yields 
of native cotton, but attention was given first to obtaining better 
husbandry, in order to give the best chances of success to the better 
cottons. Planters did get better yields than the native growers, but 
the cotton was not graded as well as the native grown. 
Mr. HOLM drew attention to the importance of increasing the 
yields and said that generally under European methods larger yields 
were obtained than under native methods. He asked if the yields 
obtained by native growers could not be improved by improved 
methods of cultivation and in other wavs. 
Mr. SIMPSON did not consider that methods of cultivation as 
practised by Western nations were of the very high importance 
usually attributed to them in tropical countries. The method of 
cultivation suited to. a country depends upon the conditions of that 
country; Western methods of cultivation were based upon the 
conditions of Europe and could not be applied directly to countries 
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