Soil Organic-Matter in Water-Stable Aggregates Under Different Soil-Management Practices

Abstract

An experiment of different management practices in a commercial vineyard, which was established in 2006 in the locality of Nitra-Dražovce, Slovakia on Rendzic Leptosol, was used to evaluate the dynamics of soil organic-matter parameters during the years 2008–2015. The following treatments were established: 1. G (grass without fertilisation as control), 2. T (tillage), 3. T+FYM (tillage + farmyard manure), 4. G+NPK3 (grass + 3rd intensity of fertilisation for vineyards: it means 125 kg/ha N, 50 kg/ha P, 185 kg/ha K), and 5. G+NPK1 (grass + 1st intensity of fertilisation for vineyards: it means 100 kg/ha N, 30 kg/ha P, 120 kg/ha K). The results showed that the soil-management practices in the vineyard significantly influenced the soil organic carbon in water-stable aggregates (SOC in WSA). The content of SOC in WSAma increased on average in the following order: T < G < G+NPK1 < G+NPK3 < T+FYM. Intensive soil cultivation in the T treatment resulted in a statistically significant build-up of SOC in WSAma at an average rate of 1.33, 1.18, 0.97, 1.22 and 0.76 g/kg/y across the size fractions > 5 mm, 5‒3 mm, 2–1 mm, 1–0.5 mm and 0.5–0.25 mm, respectively. The content of non-labile carbon reflected the contents of SOC in WSA. The highest labile carbon (CL) in WSAma, as compared to others, was found in T+FYM. Overall, application of higher NPK doses resulted in higher content of CL in WSAma compared with the lower applications of NPK. On the other hand, lower applications of NPK to soil increased the content of CL in WSAmi, as compared to G+NPK3.

Soil Organic Carbon Fractions, Soil Microbial Biomass Carbon, and Enzyme Activities Impacted by Crop Rotational Diversity and Conservation Tillage in North West IGP: A Review

“…4c]. Simansky et al, (2017) reported that the soilmanagement practices significantly influenced the soil organic carbon in water-stable aggregates (SOC in WSA). The content of SOC in WSA ma increased on average in the following order: T<G< G+NPK 1 <G+NPK 3 < T+FYM.…”

Optimally combined application of organic and chemical fertilizers increases grain yield and improves rhizosphere microecological properties in rice ratooning

“…It is considered as a eutrophic bacterium and has a positive correlation with the content of total nitrogen and alkali hydrolyzed nitrogen in soil, which plays an important role in soil nitrogen cycle (Fei et al., 2020; Wang et al., 2009). From the genus level of soil rhizosphere bacteria, the relative abundance of anaerobes in GM 2 , GM 3 , and GM 6 with organic fertilizer was significantly lower than that in CF and CK, which might have result from the different partitioning pattern of photoassimilates as shown in Table 6 and also could be the reason that organic fertilizer could promote the formation of soil water stable aggregates and increase the proportion of large aggregates in soil (Šimanský et al., 2017). Therefore, we suggested that the proper application of organic fertilizer optimized the partitioning pattern of photoassimilates in crop plants and rhizosphere soil, especially reducing the allocation of photoassimilates to rhizosphere soil, which was beneficial in decreasing the greenhouse gas emission and the activation of rhizosphere nutrient environment (Lin et al., 2021).…”

Fertilization and Soil Ploughing Practices under Changing Physical Environment Lead to Soil Organic Carbon Dynamics under Conservation Agriculture in Rice-Wheat Cropping System: A Scoping Review

“…The impact of tillage on SOC and concentration of nutrients in soil aggregates can differ spatially and temporally, depending on various types of soil and crops involved. According to Šimanský et al, [70], soil-management practices significantly affect SOC in water-stable aggregates (WSA). The SOC content in WSA enhanced in the following order i.e.…”