| Summary: | This paper describes trials using sweet-potato germplasm from lrian Jaya, where sweet potatoes are a staple food in the highlands. During the collection of sweet-potato germplasm, farmers' knowledge of those sweet potatoes has also been collected. Fanners' knowledge about sweet potatoes in Irian Jaya will be used as a basis for this project and includes information on yields, the use of sweet potatoes as human food or reed for livestock, and the condition of Ihe environment.
Varieties are selected on the basis of farmers' criteria, including market orientation and table consumption: skin color, flesh color, uniformity, and other criteria. The project is also collecting information on farmers' cultivation practices, such as using high ridges in the rainy season and reducing the leaves during Ihe growing period, as well as how to choose healthy cuttings.
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