SUMMARY1 -Tagged superphosphate was applied to 2.5 year old passion fruit plants from a commercial plantation established in a sandy loam.2 -100 grams of the fertilizer were distributed in the following ways: in a circular furrow 20 cm deep around the plant 40 cm from the stems; in a circular strip 10 cm wide, 40 cm from the stems; in six holes around the plants, 40 cm from the stems 20 cm deep, 2.5 cm in diameter.3-10 grams of the fertilizer in 1 l of water were sprayed to the leaves.4 -Three weeks after the treatments were made leaf samples were taken for analysis.5 -Determinations of specific activities both in the leaves and in the fertilizer used have shown that Ρ in the plant was derived from the superphosphate m the following relative proportions (by making the first treatment equal to 100): circular furrow = 100; circular strip = 120; holes = 30; foliar spray = 230.