Phosphorus and Potassium Distribution and Adsorption on Two Florida Sandy Soils

摘要: Phosphorus and K are critical nutrients in citrus production whose deficiency or excess can affect yield, fruit quality, water quality. However, no study has been conducted to understand the nutrient distribution root zone using intensive fertigation practices Florida’s sandy soils. Thus, experiments were to: (i) compare performance of intensively managed drip microsprinkler systems with conventional grower practices; (ii) determine P adsorption based on recommended fertilizer application rates Candler (hyperthermic, uncoated Lamellic Quartzipsamments) Immokalee (sandy, siliceous, hyperthermic Arenic Alaquods) fine sands. applied tracked time distance from point application. Soil soil was 27 163% higher irrigated for restricted than unirrigated up 70% greater 0- 15-cm depth practices. 5 61% upper sand. also differed by fertilization method, depth, between zones. The linearized sorption coefficients three- fourfold corresponding depths Immokalee, while similar two It is unlikely that would present a quality concern as strictly related irrigation practice. rate should be lowered young trees (<3 yr old).