Affiliation:
1. Leibnitz Centre for Agricultural Landscape Research (ZALF), Eberswalder Str. 84, 15374 Müncheberg, Germany
2. Faculty of Agricultural and Environmental Sciences, University of Rostock, Justus-von-Liebig-Weg 6, 18059 Rostock, Germany
Abstract
Phosphorous (P) starter fertilization can increase maize (Zea mays L.) yield. Widespread application in soils with sufficient P availability leads to environmental risks. Subsequently, alternative strategies to support the maize plant’s early development are needed to lower P surpluses. Here, we conducted field experiments comparing standard starter fertilizer diammonium phosphate (DAP) (20.1 kg P ha−1) to microgranular fertilizer (MG) (2.4 kg P ha−1) and combined in-furrow inoculation with Bacillus atrophaeus and mycorrhizal fungi (Rhizoglomus irregulare, Funneliformis mosseae, and Funneliformis caledonium), alone and in combination. The soil microbial community inside and between the maize rows was monitored by quantitative PCR (qPCR)-based quantification of eight fungal and bacterial groups. The yield did not vary between fertilization with DAP or MG and no fertilizer control. The combined microorganism inoculum (MO), however, enhanced the yield by 4.2%. The soil microbial community composition was not affected by the MO application. However, on one field site and inside the rows, it leads to a significant increase in overall microbial gene copy numbers by 9.3% and a significant decrease in the relative abundance of the bacterial phylum of Bacillota (Firmicutes) by 18%. The in-furrow MO application is thus a promising option for starter fertilizer replacement.
Funder
Fachagentur Nachwachsende Rohstoffe
Subject
Agronomy and Crop Science
Reference103 articles.
1. Improving the phosphorus budget of European agricultural soils;Panagos;Sci. Total Environ.,2022
2. Agronomic phosphorus imbalances across the world’s croplands;MacDonald;Proc. Natl. Acad. Sci. USA,2011
3. Subnational nutrient budgets to monitor environmental risks in EU agriculture: Calculating phosphorus budgets for 243 EU28 regions using public data;Einarsson;Nutr. Cycl. Agroecosystems,2020
4. Bennett, E.M., Carpenter, S.R., and Caraco, N.F. (2001). Human Impact on Erodable Phosphorus and Eutrophication: A Global Perspective. BioScience, 51.
5. Life’s Bottleneck: Sustaining the World’s Phosphorus for a Food Secure Future;Cordell;Annu. Rev. Environ. Resour.,2014
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献