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Critical weed competition periods in annual crops.
(University of Nairobi, 1974)
The critical weed competition period of crops is defined and factors affecting it are reviewed. In a trial at Kumasi, Ghana in 1972, seed yields of sesame grown at 222 000 plants/ha ranged from 0.44 t/ha with no weeding ...
The effects of plant population, spacing and weeding on yields of soya beans
(University of Nairobi, 1976)
In trials in the 1973 short rains and the 1974 long rains at Kabete, Kenya, soyabean cv. Hill was sown at plant populations of 111 111, 250 000 or 1 000 000/ha on the square (10 X 10 cm, 20 X 20 cm or 30 X 30 cm) or in ...