Soil aggregation and soil aggregate stability regulate organic carbon and nitrogen storage in a red soil of southern China

Mustafa, Adnan; Xu, Minggang; Shah, Syed Atizaz Ali; Abrar, Muhammad; Sun, Nan; Wang, Baoren; Cai, Zejiang; Saeed, Qudsia; Naveed, Muhammad; Mehmood, Khalid; Núñez‐Delgado, Avelino

doi:10.1016/j.jenvman.2020.110894

Cited by 195 publications

(93 citation statements)

References 77 publications

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“…In our study, the POC of waste amendment treatments gradually increased with increasing added amounts at the early stages, which was consistent with previous research results [23]. This relates to organic carbon input-derived SOC experiencing higher accumulation in macroaggregates [31]. Although the amount of organic material carbon added is the same, the effects of different materials on soil particulate organic carbon are significantly different.…”

Section: Discussionsupporting

confidence: 91%

Deciphering the Effects of Waste Amendments on Particulate Organic Carbon and Soil C-Mineralization Dynamics

Zhang

et al. 2021

Sustainability

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It is important to understand the dynamics of soil carbon to study the effects of waste amendment inputs on soil organic carbon decomposition. The aim of this study was to evaluate the effect of waste amendment carbon input on the soil organic carbon (SOC) content, soil particulate organic carbon (POC) content and soil organic carbon mineralization rate dynamics. A 60-day experiment was carried out in the laboratory. The following treatments were compared: (1) CK: soil without amendments; (2) FW1: soil with food waste compost (soil/food waste compost = 100:1); (3) FW2: soil with food waste compost (soil/food waste compost = 100:2); (4) GW1: soil with garden waste compost (soil/garden waste compost = 100:0.84); (5) GW2: soil with garden waste compost (soil/garden waste compost = 100:1.67); (6) FGW1: soil amendments mixture (soil/food waste compost/garden waste compost = 100:0.5:0.42); (7) FGW2: soil amendments mixture (soil/food waste compost/garden waste compost = 100:1:0.84); the inputs of amendment carbon to FW1, GW1 and FGW1 were 2.92 g kg−1, the inputs of amendment carbon to FW2, GW2 and FGW2 were 5.84 g kg−1. The results showed that the addition of waste amendments increased the amount of cumulative mineralization from 95% to 262% and accelerated the rate of soil mineralization. After adding organic materials, the change in the soil organic carbon mineralization rate could be divided into two stages: the fast stage and the slow stage. The dividing point of the two stages was approximately 10 days. When equal amounts of waste amendment carbon were input to the soil, there was no significant difference in SOC between food waste and garden waste. However, SOC increased with the amount of amendment addition. However, for POC, there was no significant difference between the different amounts of carbon input to the garden waste compost treatments. SOC and POC were significantly correlated with the cumulative emissions of CO2.

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Section: Discussionsupporting

confidence: 91%

Deciphering the Effects of Waste Amendments on Particulate Organic Carbon and Soil C-Mineralization Dynamics

Zhang

et al. 2021

Sustainability

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“…In addition to this, there are additive advantages of using consortium or mixed culture of PSB as they increase soil P by producing organic acids, inorganic/mineral acids, chelators and phosphatase enzymes, leading to enhanced P-availability for longer and continuous supply of P and is evidenced by previous studies as well [89][90][91][92][93]. Moreover, the application of organic materials might have improved the physical conditions of soil through enhanced soil aggregation and soil aggregate stability [94], which in turn have improved water holding capacity and nutrient retention in the soil after fertilizer application.…”

Section: Discussionmentioning

confidence: 98%

Deciphering the Potential of Bioactivated Rock Phosphate and Di-Ammonium Phosphate on Agronomic Performance, Nutritional Quality and Productivity of Wheat (Triticum aestivum L.)

et al. 2021

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Wheat is one of the leading staple crops in many countries. Phosphorus (P) plays an important role for wheat growth and yield as it takes part in many metabolic pathways. Even for soluble phosphatic fertilizers, most of the Pakistani soils, being alkaline and calcareous in nature, show phosphorus use efficiency (PUE) not more than 10–25%. The major issue is the unavailability of P due to fixation and precipitation reactions with soil particles. Composting of rock-phosphate with animal and poultry manures supplied with bio-stimulated phosphate solubilizing bacteria (PSB) not only enhances the RP solubilization but also serves as a potent source of P for plants. Composted/bio-activated rock-phosphate (B-RP), prepared by group of three bacterial strains i.e., Pseudomonas sp. (E11), Bacillus sp. (MN54) and Enterobacter sp. (MN17) aided with molasses (5%) and urea (10%), was tested alone and in various combinations with di-ammonium phosphate (DAP). In this pot trial, the combined application of B-RP and DAP was found superior to the sole application of B-RP. Even the combination of B-RP and DAP sharing equal amount of recommended P showed better results as compared to the sole application of DAP, giving improved shoot biomass (25%), total P-uptake (67%), recovery efficiency of P (75%), dry matter (29%), crude protein (29%), and other yield, physiological and nutritional quality parameters of wheat. So, it could be concluded that integrated use of B-RP and DAP with equal proportion of recommended P could serve as a better management practice for not only improving quantity but also the quality of the wheat grain.

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“…In our experiments, we studied soil carbohydrates, a significant part of which is associated with humus. Foliar treatment of vegetative plants with a biologically active substance E3S Web of Conferences 210, 04005 (2020) ITSE-2020 https://doi.org/10.1051/e3sconf/202021004005 provokes plants to produce root secretions, which in turn activates microorganisms of the rhizosphere and, as a result, an increase in the pool of carbohydrate components [20,21].…”

Section: Materials and Research Methodsmentioning

confidence: 99%

Influence of humic preparations on the content of carbohydrates in structural units and their water resistance

Lykhman¹,

Klimenko²,

Dubinina³

et al. 2020

E3S Web Conf.

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The effect of the combined use of humic preparations and pesticides in various dosages on the quantitative composition of carbohydrates in agronomically valuable soil aggregates was studied. Biologically active humic substances indirectly, through plants and microorganisms, intensify the release of sugars, which play an essential role in the initial stages of the soil aggregates formation. Pesticides have a depressing effect on the soil microflora development, which, in turn, is one of the factors of the agronomically valuable soil structure formation. The introduction of humic preparations reduces the toxic effect of pesticides and reduces seasonal deterioration in the structural state of the soil. It has been shown that the distribution of aggregates according to variants, both in the case of dry sieving and in the case of wet sieving, correlates with the dynamics of the carbohydrate content in soil particles. This tendency is especially perceptible in the variants where pesticides were introduced into the soil together with the humic preparation. The correlation between the distribution of soil aggregates and carbohydrates according to Chaddock’s scale is salient (r = 0.532). The introduction of humic preparations makes it possible to reduce the loss of the agronomically valuable structure even in aftereffect.

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Soil aggregation and soil aggregate stability regulate organic carbon and nitrogen storage in a red soil of southern China

Cited by 195 publications

References 77 publications

Deciphering the Effects of Waste Amendments on Particulate Organic Carbon and Soil C-Mineralization Dynamics

Deciphering the Effects of Waste Amendments on Particulate Organic Carbon and Soil C-Mineralization Dynamics

Deciphering the Potential of Bioactivated Rock Phosphate and Di-Ammonium Phosphate on Agronomic Performance, Nutritional Quality and Productivity of Wheat (Triticum aestivum L.)

Influence of humic preparations on the content of carbohydrates in structural units and their water resistance

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