... On the other hand, in the far Northeast, along the Mekong River,over 2030 mm is received annually. Variation in the average amount of rainfall is thereforenotable in the Northeast. During the ... ResearchInstitute of Thailand (RRIT) and the Office of the Rubber Replanting Aid Fund (ORRAF). The RRIT works under the Department of Agriculture (Ministry of Agriculture and Cooperatives), and its ... (Compagnon 1987). During periods of low temperature,slowing down of growth has been observed in China and in Northeast India. In China, whererubber-growing areas lie between 18° and 24°N, the growth...