Nitrogen Transformations in Broiler Litter-Amended Soils

摘要: Nitrogen mineralization rates in ten surface soils amended with (200 μg N g −1 soil) or without broiler litter were investigated. The soil-broiler mixture was incubated at 2 5 ± 1 ∘ C for 28 weeks. A nonlinear regression approach used to estimate the readily mineralizable organic pools ( 0 ) and first-order rate constant k). cumulative mineralized nonamended did not exceed 80 mg kg soil. However, Decatur soil 2, it exceeded 320 mg greatest calculated of native observed Sucarnoochee alone (123 mg O 3 − which when reached 596 mg added initially a fast k1) followed by slow (k2) most resistant fraction. Half-life remaining varied from 33 75 weeks 43 15 soils. When regressed against 𝑟 = . 7 8 ∗ 4 ), positive linear relationships obtained. increased sand but decreased silt clay contents.