The purpose of this paper is to outline briefly the problems involving trace elements and to locate broadly the areas concerned within the district. Several major elements will also be discussed. The problems appear to have two major effects and will be discussed in two sections: (1) Pasture development and production, and (2) Animal health. The Wairarapa district contains approximately 1 1/2 million acres of which 85% is hill country. Much of this area is steep and cannot be cultivated. Thus, by necessity, development of much of this district will be by aerial oversowing of clovers, topdressing and the positive use of stock. Measurement of success will be by eye appraisal of pastures, combined with the more factual information yielded by actual area stock carrying capacities and stock performance levels.