Do High-Phosphorus Soils Really Need More Fertilizer?
Accumulated soil phosphorus supported crops for at least three years, but the timing to resume fertilization depends on soil-test P, crop demand, yield, and soil properties.
Wednesday, August 26, 2026
Accumulated soil phosphorus supported crops for at least three years, but the timing to resume fertilization depends on soil-test P, crop demand, yield, and soil properties.
Phosphorus requirements of black beans differed between acidic and alkaline Haitian soils, highlighting the importance of soil-specific fertilizer recommendations.
A study led by William R. Osterholz examined how soil phosphorus availability affects the amount of phosphorus remaining in corn and soybean residues after crop maturity and how readily that phosphorus can be released into water. Why It Matters Phosphorus is essential for crop production, but it can contribute to water-quality problems when it moves…
Summer cover crops increased soil organic matter and labile carbon pools in sandy subtropical vegetable soils.
Optimum nitrogen rates for Florida corn depend on field history, season, economics, and the method used.
Winter cover crops improved soil nitrogen cycling and retention, but their benefits were more evident in soil function than yield.