Effects of Organic Base Fertilizer and Inorganic Topdressing on Alfalfa Productivity and the Soil Bacterial Community in Saline Soil of the Huanghe River Delta in China

He, Feng; Wang, Guoliang; Wang, Lixue; Li, Zhensong; Tong, Zongyong; Wang, Yu; Li, Xianglin

doi:10.3390/agronomy12112811

Cited by 7 publications

(6 citation statements)

References 48 publications

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“…In this study, significant yield differences were observed in all three alfalfa harvests when under different organic fertilizer application rates, which might be related to the slow nutrient release and the persistent nutrient effects of organic fertilizer [23,24]. In addition to nutrients, salt was also an important influencing factor in the alfalfa yield in this study.…”

Section: Discussionmentioning

confidence: 54%

Effects of Subsurface Drainage Spacing and Organic Fertilizer Application on Alfalfa Yield, Quality, and Coastal Saline Soil

Zhang,

Wang,

Yang

et al. 2024

Water

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Subsurface drainage and organic fertilizer application are two important measures for improving saline–alkali soils, while the effects of different drainage spacings combined with organic fertilizer application amounts on alfalfa growth and coastal saline soil properties have seldom been evaluated. This study designed subsurface drainage pipes at four spacing distances, including 0 m (CK, without subsurface drainage), 6 m (S1), 12 m (S2), and 18 m (S3), and three organic fertilizer application amounts, including 3000 kg/ha (N1), 4500 kg/ha (N2), and 6000 kg/ha (N3), to observe the effects of different combinations of subsurface pipe spacings and organic fertilization amounts on alfalfa yield, quality, soil salinity, and nutrients. The results showed that the yield of alfalfa increased with higher fertilization amounts and smaller spacing between drainage pipes. The highest yield occurred in the S1N3 treatment, and the three batches reached 1268.5 kg/ha, 3168.0 kg/ha, and 2613.3 kg/ha, respectively, significantly (p < 0.05) higher than CK for all three batches. The increase in organic fertilizer amount resulted in an increase of 0.5–9.3% in the crude protein content, a decrease of 1.8–3.4% in the neutral detergent fiber content, and a decrease of 1.3–5.5% in the acid detergent fiber content for alfalfa plants. Under CK, the contents of quality indicators in alfalfa were the highest. For the drainage treatments, the quality indicator contents were overall at a higher level under S3. Subsurface drainage had a reduction effect on the salinity of all the 0–80 cm soils. For the surface soil, it was detected that smaller spacing was beneficial for reducing soil salt content, while higher fertilization amounts increased the salt content. S1 reduced the soil salt content by 36.3–46.1% compared to CK; however, N3 increased the salt content by 7.0–16.2% compared to the other two fertilization treatments. In addition, smaller spacing between the subsurface drainage pipes generally reduced the soil’s available nitrogen, and total nitrogen increased the C/N ratio but had no significant effect on the organic matter. It was concluded that the spacing between subsurface drainage pipes and the application amounts of organic fertilizer have remarkable impacts on alfalfa yield and quality, mainly by changing the soil salinity and nutrient status.

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Section: Discussionmentioning

confidence: 54%

Effects of Subsurface Drainage Spacing and Organic Fertilizer Application on Alfalfa Yield, Quality, and Coastal Saline Soil

Zhang,

Wang,

Yang

et al. 2024

Water

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“…It is noteworthy that the effect was more pronounced in the first few years, but gradually diminished in the last few years, and this is mostly likely because of the decline of M. sativa as noted above. Therefore, it is suggested that rational topdressing is key to the high yields of M. sativa, and fertilization can also properly delay the M. sativa decline time (Li, 2002;He et al, 2022), especially after planting for more than five years. tended to be higher in the downslope positions (S3, S4, or S3 + S4) than the upslope positions (S1, S2 or S1 + S2) in the pure forests, while there were no differences in TBL in most silvopastoral systems, indicating that M. sativa has a balanced effect on the tree biomass among the slope positions in the silvopastoral systems.…”

Section: Discussionmentioning

confidence: 99%

Tree growth as an effect indicator of silvopastoral systems in the low hilly area of western Henan province, China

Liu,

Cheng,

Wang

et al. 2023

Front. For. Glob. Change

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The low hilly area is a major landform in the west of Henan province, China, and it is suffering soil and water loss because of human activities. The silvopastoral system that combines trees and grasses has been widely used to restore this fragile area. We conducted in situ field experiments in 2011 in the low hilly area of Henan province involving pure forests of Populus simonii (PS; Salicaceae), Platycladus orientalis (PO; Cupressaceae), Quercusvariabilis (QV; Fagaceae), and Robinia pseudoacacia (RP; Fabaceae), and also with each forest tree species being combined with Medicago sativa (MS; Fabaceae) as silvopastoral systems, i.e., PS-MS, PO-MS, QV-MS, and RP-MS, respectively. We recorded tree diameter at breast height (DBH) and tree height (TH) in the years 2014–2016, 2018, 2020, and 2022 for all the different vegetation types. Tree biomass load (TBL, i.e., tree biomass per unit area) was estimated based on DBH and TH using allometric equations for each tree species. Generally, the results showed that the DBH, TH, and TBL were promoted in the silvopastoral systems PS-MS, PO-MS, and QV-MS. Specially, the DBH and TBL of PS-MS and PO-MS tended to be higher and were significantly higher than the pure forests of PS and MS, respectively, in 2014–2016; the silvopastoral systems were not significantly different from the pure forests for DBH in 2018 and 2022, and for TBL in 2018 and 2020. TH was lower in PS-MS and PO-MS than that in PS and PO in 2014–2016, while there was no difference of TH between PS-MS and PS in 2018 and 2022, and TH was higher in PO-MS than that in PO in 2018, 2020 and 2022. The DBH, TH, and TBL were all higher in QV-MS than QV. The TBL in RP-MS was non-significant or lower compared to that in RP. Moreover, TBL tended to be lower in upslope positions than downslope in the pure forests, while there was no difference in most silvopastoral systems. In summary, PS and PO may be suggested as the tree species selection in vegetation restoration processes for about five years, QV may be a better alternative for a long term, while RP is not recommended.

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“…The significant differences in alfalfa yield among the cutting times was consistent with the results of Hakl [37], who reported that 80% of the yield difference could be explained by the year. Furthermore, He et al [22] concluded that organic fertilizer can increase Given the impacts on environmental safety and human health caused by traditional inorganic fertilizers, specific soil microbes are under consideration to replace fertilizers as an ecofriendly approach for sustainable agricultural development and food security [42]. Rath et al [43] showed that the distribution of salt tolerance traits in communities could be quantified by the dose-response relationship between salinity and bacterial growth, which raises the possibility of agricultural utilization of saline soil.…”

Section: Discussionmentioning

confidence: 99%

“…Salinization significantly affects the relative abundance of soil bacteria, such as Firmicutes, which increase the incidence of bacterial wilt in potato [20,21]. A recent experiment on fertilization of saline soil indicated that the bacterial community plays a crucial role in improving the yield of alfalfa [22]. Generally, 10%-40% of the total applied fertilizer is absorbed by plants and the remaining 60%-90% is lost as a result of leaching, denitrification, and volatilization.…”

Section: Introductionmentioning

confidence: 99%

Organic fertilizer and hydrothermal conditions change the distribution of Medicago sativa L. productivity and soil bacterial diversity in coastal saline soil

Cao,

Li,

et al. 2023

Chem. Biol. Technol. Agric.

Self Cite

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Background Alfalfa (Medicago sativa L.) is a perennial leguminous forage that can improve the properties of saline soil. In addition, the supplementation with fertilizer to promote soil bacterial activity is critical to improve the productivity of coastal saline soils. However, the association between fertilizer application, bacterial community characteristics, and alfalfa yield in saline soil remains unclear. Aim To understand the interaction of different fertilizer and environmental factors on soil bacterial diversity and alfalfa yield in coastal saline soil. Results A 4-year field study was conducted to examine the interaction of different fertilizer treatments and environmental factors on soil bacterial diversity and alfalfa yield in coastal saline soil in China. Three organic fertilizer treatments (fulvic acid potassium, fulvic acid potassium + wood vinegar, and fulvic acid potassium + Bacillus), one biochar treatment (bio-charcoal), one inorganic fertilizer treatment (diammonium phosphate), and a control (no fertilizer) were included. The effects of the six treatments and 15 cutting times on alfalfa yield and soil bacterial community diversity were assessed. The productivity in fulvic acid potassium + Bacillus and fulvic acid potassium treatments was 68.37 and 67.90 t·hm−2 in 4 years, which was significantly higher than that in the bio-charcoal treatment and control. Hydrothermal conditions and timing of alfalfa harvest had significant effects on the soil bacterial community. Proteobacteria, Acidobacteria, and Actinobacteria were the principal bacterial phyla detected in the soil samples, collectively accounting for approximately 60% of the total bacterial abundance. The relative abundance of Bacteroidetes, Firmicutes, and Nitrospirae was significantly correlated with alfalfa yield, and the abundance of these phyla was also affected by the maximum temperature and precipitation. Fertilizer supplementation in coastal saline soil can effectively increase the yield of alfalfa. Among the fertilizers tested, fulvic acid potassium had the strongest effect, whereas bio-charcoal fertilizer had little effect on alfalfa yield. Graphical Abstract

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Effects of Organic Base Fertilizer and Inorganic Topdressing on Alfalfa Productivity and the Soil Bacterial Community in Saline Soil of the Huanghe River Delta in China

Cited by 7 publications

References 48 publications

Effects of Subsurface Drainage Spacing and Organic Fertilizer Application on Alfalfa Yield, Quality, and Coastal Saline Soil

Effects of Subsurface Drainage Spacing and Organic Fertilizer Application on Alfalfa Yield, Quality, and Coastal Saline Soil

Tree growth as an effect indicator of silvopastoral systems in the low hilly area of western Henan province, China

Organic fertilizer and hydrothermal conditions change the distribution of Medicago sativa L. productivity and soil bacterial diversity in coastal saline soil

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