Date
2020-08-19Subject
630 Agriculture Konservierende BodenbearbeitungKompostBodengüteMikronährstoffMengenelementBiomasseMetadata
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Aufsatz
Bacterivorous Nematodes Correlate with Soil Fertility and Improved Crop Production in an Organic Minimum Tillage System
Abstract
Reduced nutrient mineralization rates under minimum tillage are usually compensated by mineral fertilizer application. These, however, cannot be applied in organic farming systems. We hypothesized that an organic minimum tillage system based on frequent cover cropping and application of dead mulch would improve soil fertility and compensate for the potential negative effects of minimum tillage. Two long-term field experiments were set up in 2010 and 2011 to compare plowing versus minimum tillage including the application of transferred mulch. A second factor, the application of compost versus mineral potassium and phosphorus, was also compared. In 2019, soils were analyzed for soil pH, organic carbon, macro- and micronutrients, microbial biomass, microbial activity, and total nematode abundance. In addition, performance of pea in the same soils was determined under greenhouse conditions. Across both experiments, macronutrients (+52%), micronutrients (+11%), microbial biomass (+51%), microbial activity (+86%), and bacterivorous nematodes (+112%) increased in minimum tillage compared to the plow-based system. In the greenhouse, pea biomass was 45% higher in the soil that had been subjected to minimum tillage compared to the plow. In conclusion, soil fertility can be improved in organic minimum tillage systems, which include intensive cover cropping and the application of dead mulch, over plow-based systems.
Citation
In: Sustainability Volume 12 / Issue 17 (2020-08-19) , S. 6730 ; EISSN 2071-1050Sponsorship
Gefördert durch den Publikationsfonds der Universität KasselCitation
@article{doi:10.17170/kobra-202008251644,
author={Schmidt, Jan Henrik and Hallmann, Johannes and Finckh, Maria Renate},
title={Bacterivorous Nematodes Correlate with Soil Fertility and Improved Crop Production in an Organic Minimum Tillage System},
journal={Sustainability},
year={2020}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2020$n2020 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/11728 3000 Schmidt, Jan Henrik 3010 Hallmann, Johannes 3010 Finckh, Maria Renate 4000 Bacterivorous Nematodes Correlate with Soil Fertility and Improved Crop Production in an Organic Minimum Tillage System / Schmidt, Jan Henrik 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/11728=x R 4204 \$dAufsatz 4170 5550 {{Konservierende Bodenbearbeitung}} 5550 {{Kompost}} 5550 {{Bodengüte}} 5550 {{Mikronährstoff}} 5550 {{Mengenelement}} 5550 {{Biomasse}} 7136 ##0##http://hdl.handle.net/123456789/11728
2020-08-26T14:34:36Z 2020-08-26T14:34:36Z 2020-08-19 doi:10.17170/kobra-202008251644 http://hdl.handle.net/123456789/11728 Gefördert durch den Publikationsfonds der Universität Kassel eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ conservation agriculture compost soil quality bio-test macro- and micronutrients free-living nematodes microbial respiration microbial biomass 630 Bacterivorous Nematodes Correlate with Soil Fertility and Improved Crop Production in an Organic Minimum Tillage System Aufsatz Reduced nutrient mineralization rates under minimum tillage are usually compensated by mineral fertilizer application. These, however, cannot be applied in organic farming systems. We hypothesized that an organic minimum tillage system based on frequent cover cropping and application of dead mulch would improve soil fertility and compensate for the potential negative effects of minimum tillage. Two long-term field experiments were set up in 2010 and 2011 to compare plowing versus minimum tillage including the application of transferred mulch. A second factor, the application of compost versus mineral potassium and phosphorus, was also compared. In 2019, soils were analyzed for soil pH, organic carbon, macro- and micronutrients, microbial biomass, microbial activity, and total nematode abundance. In addition, performance of pea in the same soils was determined under greenhouse conditions. Across both experiments, macronutrients (+52%), micronutrients (+11%), microbial biomass (+51%), microbial activity (+86%), and bacterivorous nematodes (+112%) increased in minimum tillage compared to the plow-based system. In the greenhouse, pea biomass was 45% higher in the soil that had been subjected to minimum tillage compared to the plow. In conclusion, soil fertility can be improved in organic minimum tillage systems, which include intensive cover cropping and the application of dead mulch, over plow-based systems. open access Schmidt, Jan Henrik Hallmann, Johannes Finckh, Maria Renate doi:10.3390/su12176730 Konservierende Bodenbearbeitung Kompost Bodengüte Mikronährstoff Mengenelement Biomasse publishedVersion EISSN 2071-1050 Issue 17 Sustainability 6730 Volume 12 false
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