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ABSTRACT
Glycine max. (L.) Merr is a plant based substitute for beef. It is usually grown in the Southern Savannah Nigeria where there is abundance of rain. The variety TGX 1448-2E was subjected to drought stress in order to see how it fairs under a water deficient condition and this condition was mitigated with the use of growth regulators, Salicylic acid and 2,4-Dichlorophenoxyacetic acid . The experiment lasted for a period of 6 weeks. The experimentation consisted of two controls, 1 with growth regulators and the other with no treatment for drought, 3 different concentrations of Salicylic acid and 2,4-D, 5ppm, 10ppm and 20ppm respectively. Each treatment had 3 replicate making an overall total of 81 bags. Five seeds were planted in each bag and watered normally for a week to establish seedlings, then regimented watering began on day 8 and after another week growth parameters were taken such as height of plant, number of leaves and colour of leaves. Results recorded that soybean growth is retarded by drought stress but the foliar application of Salicylic acid and 2,4-D growth regulator weekly significantly improves its tolerance to drought stress and cause improvement in plant height, number of leaf and colour. These findings have implications for crop improvement and the development of drought-resistant varieties of soybean
