Effect of P rates in long-term conservation agriculture trials on the vertical distribution of soil acidity and nutrient availability.

ABSTRACT: Few studies are published on the long-term impact of phosphorus (P) rates as triple superphosphate (208 g P kg^-1) on the vertical distribution of soil acidity and the availability of macro and micronutrients within conservation systems. This study explores the long-term impacts of increasing P rates on the vertical distribution of soil acidity and Mehlich-3 nutrient availability in long-term trials managed under conservation tillage in North Carolina. In 2022, soil samples were collected from two contrasting long-term trials: one on a sandy, poorly drained Portsmouth soil at Tidewater Research Station (67 years) and another on a well-drained, clay-rich Lloyd soil at Piedmont Research Station (37 years), at depths of 0-5, 5-10, 10-20, and 20-30 cm. In general, the greater crop yi

SUBMITTER: Tiecher T 

PROVIDER: S-EPMC12431954 | biostudies-literature | 2025 Sep-Oct

REPOSITORIES: biostudies-literature