Coffee Board of Kenya Monthly Bulletins February 1973

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1973
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In the test on multi-row spraying,the output of the spray pump did not allow for a 22.6 m swath to be covered.However,a good spray distribution was obtained on a 16.2 m swath.Bad multi-row spraying been the only function of this sprayer,then a narrow swath (as compared to other tractor powered multi-row sprays) would be considered a disadvantage.After replacing the overhead boom with vertical booms,three volumes were examined for spray distribution directed at complete cover of one row (two halves).A progressive improvement in spray deposit of top and under surface cover of branches was observed as volumes were increased.The suitable volumes were 1123 1 ha and 1348 1 /ha where 52% and 67% of the branches respectively received the desired complete cover.
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