A preliminary study of the effect of differences in local climate on the early growth of some crop plants in the southern region of Uganda.
Abstract
Batches of young tomato and bean plants were kept at a common site during either the day or night and placed out during the alternative period at each of 4 experimental sites, which ranged from the highest to the lowest available altitude, for from 6 to 20 successive occasions. The mean night temperature at the lowest night-site was not more than 3° C. lower than at the highest night-site. This difference was associated with decreases in the size attained by tomato plants of 32%, but bean plants were less affected. The effects on growth at different day-sites, between which the mean maximum temperatures varied by about 1° only, were small.-Makerere Univ. Coll., Kampala, Uganda.