Amending triple superphosphate with chicken litter biochar improves phosphorus availability

Authors : Audrey ASAP, Ahmed Osumanu HARUNA, Nik Muhamad Ab MAJİD, Maru ALİ

Pages : 121-132

Doi:10.18393/ejss.376250

View : 40 | Download : 9

Publication Date : 2018-04-01

Article Type : Research Paper

Abstract :The reaction of H2PO42- and HPO4- with Al and Fe in acid soils to form a precipitate reduces P availability. Chicken litter biochar has been used to improve soil P availability for maize production but with limited information on optimum rates of biochar and Triple Superphosphate insert ignore into journalissuearticles values(TSP); to increase P availability. This study determined the optimum amount of chicken litter biochar and TSP that could increase P availability. Different rates of chicken litter biochar and TSP were evaluated in an incubation study for 30, 60, and 90 days. Selected soil chemical properties before and after incubation were determined using standard procedures. Soil pH, total P, available P, and water soluble P increased in treatments with 75% and 50% biochar. Total acidity, exchangeable Al3+, and Fe2+ were significantly reduced by the chicken litter biochar. The chicken litter biochar also increased soil CEC and exchangeable cations insert ignore into journalissuearticles values(K, Ca, Mg and Na);. The use of 75% and 50% of 5 t ha-1 biochar with 25% TSP of the existing recommendation can be used to increase P availability whilst minimizing soil Al and Fe content. This rates can be used to optimize chicken litter biochar and TSP use in acid soils for crop production especially maize and short term vegetables.
Keywords : Incubation period, interaction, optimization, phosphorus fertilizers, phosphorus fixation, tropical acid soils

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