The effects of biochar addition on phosphorus transfer and water utilization efficiency in a vegetable field in Northeast China

Zhou, Ke; Sui, Yueyu; Xu, Xiaoyan; Zhang, Jinyuan; Chen, Yi-Min; Hou, Meng; Jiao, Xiaoguang

doi:10.1016/j.agwat.2018.08.007

Cited by 25 publications

(10 citation statements)

References 27 publications

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“…Phosphorus (P) is an essential macronutrient for plant growth and development. Inorganic and organic P fertilisation exceeding the crop's nutrition requirements and repeated intensive cropping may all result in the accumulation of P in the topsoil (Sun et al, 2012; Zhou et al, 2018). This accumulation may cause P losses from overland flow (Sharpley and Withers, 1994; Turtola and Yli‐halla, 1999).…”

Section: Introductionmentioning

confidence: 99%

Maize straw and its biochar affect phosphorus distribution in soil aggregates and are beneficial for improving phosphorus availability along the soil profile

Cao

Lan

Sun

et al. 2021

European J Soil Science

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Return of crop straw and its biochar to the agricultural field decreases pressure on phosphorus (P) resources and reduces leaching and P runoff. We conducted a 5‐year field trial from 2013 to 2017 to study the capability of maize straw and its biochar to retain soil P, which was quantified by investigating the distribution of P fractions in the soil profile (0–100 cm) and soil aggregates of different grain sizes. The impact of soil treatments with nitrogen‐phosphorus‐potassium (NPK) fertiliser alone or combined with biochar or maize straw were examined. We found that maize straw and its biochar increased soil aggregate stability, which showed an increase in mean weight diameter, geometric mean diameter, and aggregates with diameter > 250 μm. Maize straw and its biochar promoted both inorganic (dicalcium phosphate dehydrate [Ca2‐P], octocalcium phosphate [Ca8‐P], aluminium phosphate [Al‐P], iron phosphate [Fe‐P], hydroxyapatite [Ca10‐P], and occluded phosphate [O‐P]) and organic (labile organic phosphorus, LOP, and moderately labile organic phosphorus, MLOP) P accumulation and stabilization in soil aggregates, especially in small macroaggregates of 250–2000 μm. Total phosphorus (TP), Ca8‐P, Fe‐P, LOP, MLOP, moderately resistant organic phosphorus (MROP) and highly resistant organic phosphorus (HROP) were enhanced by maize straw and its biochar, whereas Ca2‐P and O‐P were decreased in the 0–20‐cm topsoil. We measured decreased TP, Fe‐P, O‐P and Ca10‐P in the 40–100‐cm soil layer following maize straw and biochar deposition, whereas higher Ca2‐P, Al‐P, MROP and HROP were obtained in maize straw‐supplemented soil relative to NPK fertiliser treatment in the 20–100‐cm soil layer. Thus, maize straw and its biochar can be used to effectively improve soil structure to support P retention and biochar has the potential to reduce P leaching from the soil profile. Highlights Maize straw and its biochar effectively improved soil structure to support P retention Inorganic and organic P fractions mainly accumulated in the small macroaggregate fraction Biochar has the potential to reduce P leaching in the soil profile

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Section: Introductionmentioning

confidence: 99%

Maize straw and its biochar affect phosphorus distribution in soil aggregates and are beneficial for improving phosphorus availability along the soil profile

Cao

Lan

Sun

et al. 2021

European J Soil Science

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“…Biochar, a soil amendment, has emerged as an attractive option to increase C:P ratio. With unique physical and chemical properties, biochar has been confirmed to have positive effects on P availability and reducing P losses in soils by changing the process of P adsorption and desorption [62] . Biochar can also have an important role in soil P transformations in vegetable soils.…”

Section: Optimization Of the C:p Ratiomentioning

confidence: 99%

Phosphorus supply and management in vegetable production systems in China

Wang¹,

Shi²,

Li³

2019

Front. Agr. Sci. Eng.

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Vegetable production systems involve high rates of chemical and organic fertilizer applications, leading to significant P accumulation in vegetable soils, as well as a decrease in P use efficiency (PUE), which is one of the key limiting factors in vegetable production. This review introduces the vegetable production systems in China and their fertilization status, and analyzes probable causes of overfertilization of vegetable fields. Poorly developed root systems and high P demand have led to the need to maintain much higher available P concentrations in the root zone for regular growth of vegetables, which might necessitate higher phosphate fertilizer input than the plants require. Research on strategies to improve vegetable PUE and the mechanisms of these strategies are summarized in this review. Increasing the P uptake by vegetables by supplying P during the critical growth stage and effectively utilizing the accumulated P by optimizing the C:P ratio in soils can substantially increase PUE. These advances will provide a basis for improving PUE and optimizing phosphate fertilizer applications in vegetable production through regulatory measures. In addition, some policies are recommended that could ensure the safety of vegetables and improve product quality. This review also aims to improve understanding of P cycling in vegetable fields and assist in the development of best practices to manage P reserves globally.

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“…Biochar influences the processes of nitrogen conversion and thus influences the contents of total and available nitrogen in soil [7]. Biochar can significantly affect the content of phosphorous in soil and enhance plant growth [15,[19][20][21], through increasing the release of P from biochar and improving the physical and chemical properties of soil, such as improving in pH value, soil structure and cation exchange capacity (CEC), and reduction of phosphorous leaching [20,22]. It has been shown that biochar can significantly increase the content of available potassium in the soil, in which the increment depended upon the biochar application rates [17,23].…”

Section: Introductionmentioning

confidence: 99%

Effects of Biochar and Sulfate Amendment on Plant Physiological Characteristics, Soil Properties and Sulfur Phytoavailability of Corn in Calcids Soil

Zhao¹,

Zhang²

2021

Pol. J. Environ. Stud.

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Although sulfur is an indispensable element for plants, its availability to plants in the presence of biochar is unclear. The effects of dairy manure biochar at the rate of 0, 0.5, 1, 2, and 5% on plant physiological characteristics, soil properties and sulfur phytoavailability in corn (Zea mays L.)-Calcids soil system were investigated using pot experiments with sulfate amendment at low, moderate and high level (0, 50 and 100 mg S kg -1 soil). It was found that the plant height, fresh and dry weight, and chlorophyll content were significantly improved with the biochar addition rate increasing from 0 to 2% while largely decreased with the rate increasing from 2% to 5%. The moderate level of sulfate amendment favored the corn biomass and chlorophyll content. The pH values of soil were significantly increased with increasing biochar addition rate, reaching about 8.50 at the rate of 5%. The catalase, urease and sucrase activity in soil increased significantly with the biochar addition from 0 to 2% but largely decreased with the rate increasing from 2% to 5%. Too high pH values due to 5% biochar addition resulted in the inhibitory effects on plant growth and microorganism activity in soil. Biochar addition at low rates (<2%) and sulfate amendment at high level improved sulfur content in leaves and roots. The decreases of inorganic sulfur and total sulfur contents in soil with biochar addition rates significantly responded to the accumulation of sulfur in leaves and roots. The results show that co-application of biochar and sulfate with proper amount could improve the growth and sulfur phytoavailability of plant in calcareous soil.

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The effects of biochar addition on phosphorus transfer and water utilization efficiency in a vegetable field in Northeast China

Cited by 25 publications

References 27 publications

Maize straw and its biochar affect phosphorus distribution in soil aggregates and are beneficial for improving phosphorus availability along the soil profile

Maize straw and its biochar affect phosphorus distribution in soil aggregates and are beneficial for improving phosphorus availability along the soil profile

Phosphorus supply and management in vegetable production systems in China

Effects of Biochar and Sulfate Amendment on Plant Physiological Characteristics, Soil Properties and Sulfur Phytoavailability of Corn in Calcids Soil

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