This proceedings includes papers delivered at the Conference on Wheat Production Constraints in; Tropical Environments held at Chiang Mai, Thailand, in January 1987. Contibuted papers; describe and analyze the range of environments in the tropical wheat zones of the world, the; constraints of the rice-wheat rotation, the effect of high temperatures on the wheat plant,; the management of limiting factors to increase wheat production, the problem of plant; establishment, the limitations in water availability, the turnaround time between rice and wheat, the requeriments of macro and micronutrients, the; control, and the breeding strategies needed to