Maize yield and root morphological characteristics affected by controlled-release diammonium phosphate and Paecilomyces variotii extracts

Application of conventional phosphorus (P) fertilizer poses great concern due to its low P efficiency and potential eutrophication of P in sensitive waters. A novel biostimulant, Paecilomyces variotii extract (ZNC), with functionality of improving nutrient uptakes of crops, was integrated with diammonium phosphate coated with biobased polyurethane polymer in a three-year field trial. The objectives were to explore the effects and mechanisms of...