Fulvic–polyphosphate composite embedded in ZnO nanorods (FA–APP@ZnO) for efficient P/Zn nutrition for peas (Pisum sativum L.). Issue 51 (17th November 2022)

• Record Type: Journal Article
• Authors: Han, Chunxiao; Yang, Jingxu; Zhou, Xiaohou; Yun, Peng; Li, Xue; Xu, Dehua; Zhong, Yanjun; Zhong, Benhe; Yan, Zhengjuan; Wang, Xinlong
• Is Part Of: RSC advances. Volume 12:Issue 51(2022)
• Page Start: 33008
• Page End: 33020
• Publication Date: 2022-11-17
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2ra05480a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Phyto-nanotechnology can improve the nutrient efficiency and alleviate the environmental stress caused by eluvial agricultural chemicals, contributing to sustainable agriculture. Abstract : A nano-fertilizer (FA–APP@ZnO) was designed and prepared based on the copolymer of fulvic acid (FA) and ammonium polyphosphate (APP) with ZnO nanorods embedded, to tackle the antagonism between phosphorus (P) and zinc (Zn) in fertilization. FA–APP@ZnO was confirmed to revert the precipitability of H2 PO4 − and Zn 2+ into a synergistic performance, where FA and APP can disperse ZnO nanorods, and in return, ZnO catalyzes the hydrolysis of the absorbed APP. The hydrolysis rate constant of pyrophosphates consequently increased 8 times. The dry biomass of pea ( Pisum sativum L.) under the FA–APP@ZnO hydroponics for 7 days increased by 119%, as compared with the situation employing the conventional NH4 H2 PO4 and ZnSO4 compound fertilizer. Moreover, the uptake of seedlings for P and Zn was enhanced by 54% and 400%, respectively. The accelerated orthophosphate release due to ZnO catalysis and the well-dispersed ZnO nanorods enabled by APP met the urgent demand for P and Zn nutrients for peas, especially at their vigorous seedling stage. This work would provide a new idea for constructing nano-platforms to coordinate the incompatible P and Zn nutrients for the improvement of agronomic efficiency.