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Combining organic amendments and enhanced efficiency fertilizers to improve the quality and nutrient use efficiency of pineapple
Scientia Horticulturae ( IF 3.9 ) Pub Date : 2024-12-12 , DOI: 10.1016/j.scienta.2024.113839 Shan Fu, Yongwang Wu, Shanlin He, Jinshuang Yao, Zeyong Han, Jun Zhao, Gang Wang, Tingyu Li
Scientia Horticulturae ( IF 3.9 ) Pub Date : 2024-12-12 , DOI: 10.1016/j.scienta.2024.113839 Shan Fu, Yongwang Wu, Shanlin He, Jinshuang Yao, Zeyong Han, Jun Zhao, Gang Wang, Tingyu Li
China's intensive pineapple farming expansion has led to soil degradation, excessive nutrient input and loss, and reduced efficiency. This study addresses these issues with a multi-objective, coordinated soil and nutrient management approach by developing 4Rplus nutrient management technologies.. These technologies combine organic amendments (manure and biochar) with enhanced efficiency fertilizers (controlled-released fertilizers, CRFs) at optimal nitrogen (N) rates to improve yield, quality, nutrient use efficiency, and reduce N loss in pineapples. The finding show that 4Rplus technologies can significantly enhance the agronomic traits, pineapple quality, and N use efficiency (NUE) while reducing N surplus. Yield, dry matter, and NUE showed an initial increase followed by a subsequent decrease as the organic substitution (as N) ratio increases. Among the treatments, 40 % organic substitution combined with CRF (40M+CRF) showed optimal results, achieving yield, dry matter, and NUE increases of 37 %, 24 %, and 51 % compared to conventional practices, respectively. Fruit quality traits, such as soluble solids, sugar-acid ratio, and Vitamin C content, also improved by 7.7 %-11.4 %. Comparatively, the 20M+CRF and 60M+CRF treatments showed similar but less effective improvements in dry matter, NUE, and fruit quality. The addition of biochar to the 40M+CRF treatment (40M-B+CRF) yielded further enhancements. Compared to the 40M+CRF treatment, the 40M-B+CRF treatment resulted in significant increases in aboveground dry matter (10 %), nitrogen and potassium uptake (26 % and 19 %, respectively), and NUE (22 %). It also significantly increased fruit Vitamin C content by 4.7 % and soluble protein by 18.2 %.
更新日期：2024-12-12
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