Risks of phosphorus runoff losses from five Chinese paddy soils under conventional management practices

Hua, Lingling; Liu, Jian; Zhai, Limei; Xi, Bin; Zhang, Fu-Lin; Wang, Hongyuan; Liu, Hongbin; Chen, Anqiang; Fu, Bin

doi:10.1016/j.agee.2017.05.015

Cited by 59 publications

(35 citation statements)

References 39 publications

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“…Controlled-release P fertilizer can reduce P loss by 62% in paddy systems and by 33% loss in corn systems [65]. Optimization of fertilizer timing and application rate is also important variables to control nutrient loss [66]. Because the losses show seasonal characteristics, with higher nutrient loading in summer and autumn.…”

Section: Fertilization Managementmentioning

confidence: 99%

Recent advances in control technologies for non-point source pollution with nitrogen and phosphorous from agricultural runoff: current practices and future prospects

et al. 2020

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Eutrophication of natural water is a universal problem. Nitrogen (N) and phosphorus (P) from agricultural runoff are the main sources of nutrient input, provided that emissions from industrial point sources (IPS) are under control. Therefore, it is of great environmental importance to reduce pollution associated with agricultural runoff as a means of regulating eutrophication levels in natural water. Numerous methods proposed for treating agricultural runoff can be classified into three categories: source control, process control, and end treatment. In this review, major technologies for N and P control from agricultural runoff are summarized along with discussion of newly proposed technologies such as biochar biomimetics and microbial catalyst. Because agricultural runoff (from farmlands to receiving waters) is a complicated pollution process, it is difficult to regulate the nutrients discharged via such process. This review will thus offer a comprehensive understanding on the overall process of agricultural runoff and eutrophication to help establish control strategies against highly complicated agricultural non-point sources.

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Section: Fertilization Managementmentioning

confidence: 99%

Recent advances in control technologies for non-point source pollution with nitrogen and phosphorous from agricultural runoff: current practices and future prospects

et al. 2020

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“…Even though most of the research on this topic has been conducted on dryland soils, a few studies have reported that long-term excessive application of nutrients could enhance environmental pollution risk in paddy fields [4,26]. In double cropping systems where flooded rice is planted in rotation with drained dryland crop, we can expect nutrient surplus from both rice and dryland crop-growing seasons [27]. It should be noted that China has the most intensive nutrient use in paddy systems among the world's top 10 rice-producing countries (Table 4).…”

Section: Water Quality Issues In Paddy Systemsmentioning

confidence: 99%

“…Liu et al [19] found that concentrations of both total phosphorus and dissolved reactive phosphorus in surface runoff were significantly correlated with their concentrations in the field ponding water (r 2 = 0.83-0.88, p < 0.0001). In a follow-up study, Hua et al [27] monitored different forms of phosphorus concentrations in field ponding water of five paddy soils over 2 years. They found that 2 weeks after fertilizer application is a critical period for phosphorus loss from paddies, which supported findings of others [19,20].…”

Section: Monitoring Of Water Quality In Paddy Systemsmentioning

confidence: 99%

“…As discussed earlier, overuse of fertilizers should be avoided because the nutrient surplus contributes to both short-term and long-term nutrient losses. Liu et al [19] and Hua et al [27] pointed out that phosphorus fertilizer applications to paddy systems should be at rates balancing crop phosphorus removal, and that phosphorus needs to be managed for both rice and the non-rice crop in a rotation to minimize phosphorus losses in the rice-growing season. Fertilizer rate management should go hand in hand with management of fertilizer application timing.…”

Section: Mitigation Options To Improve Water Quality In Paddy Systemsmentioning

confidence: 99%

“…Use slow-release fertilizer and apply all fertilizers at the seedling stage Fujisawa et al [30]; Liu et al [31] Reduce fertilizer application rate Liu et al [19]; Hua et al [27] Avoid fertilizer application during rainstorm period; split and reduce basal fertilizer dose Guo et al [20]; Liu et al [31]; Liu et al [19] Apply fertilizer as side bars Yang and Yang [32] Water management Alternate drying and wetting Peng et al [33] Control irrigation and drainage water volume Zhang et al [5]; Gao et al (2017) Control irrigation water quality Table 5. Mitigation options to improve water quality in paddy systems.…”

Section: Nutrient Managementmentioning

confidence: 99%

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Water Quality in Irrigated Paddy Systems

Liu¹,

Liu²,

Liu³

et al. 2019

Irrigation in Agroecosystems

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Irrigated paddy rice (Oryza sativa L.) is a staple food for roughly half of the world'spopulation. Concerns over water quality have arisen in recent decades, particularly in China, which is the largest rice-producing country in the world and has the most intensive use of nutrients and water in rice production. On the one hand, the poor water quality has constrained the use of water for irrigation to paddy systems in many areas of the world. On the other hand, nutrient losses from paddy production systems contribute to contamination and eutrophication of freshwater bodies. Here, we review rice production, water requirement, water quality issues, and management options to minimize nutrient losses from paddy systems. We conclude that management of nutrient source, rate, timing, and placement should be combined with the management of irrigation and drainage water to reduce nitrogen and phosphorus losses from paddies. More research is needed to identify cost-effective monitoring approaches and mitigation options, and relevant extension and policy should be enforced to achieve water quality goals. The review is preliminarily based on China's scenario, but it would also provide valuable information for other rice-producing countries.

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Fertilization as the most critical factor affecting yield response and agronomic efficiency of phosphorus in Chinese rice production: evidence from multi‐location field trials

et al. 2023

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BACKGROUNDEfficient utilization of phosphorus (P) has been a major challenge for sustainable agriculture. However, the responses of fertilizer rate, region, soil properties, cropping systems and genotypes to P have not been investigated comprehensively and systematically.RESULTSA comprehensive analysis of 9863 fertilizer‐P experiments on rice cultivation in China showed that rice yield increased first and then fell down with the addition of P fertilizer, and the highest yield of 7963 kg ha−1 was observed under 100% P treatment. Under 100% P treatment, the yield response of applied P (YRP) and agronomic efficiency of applied P (AEP) were 12.8% and 30.1 kg ha−1, respectively. Lower soil pH (< 5.5) and organic matter (< 30.0 g kg−1) were associated with lower YRP and AEP. By contrast, soil available P < 25.0 mg kg−1 resulted in decreased YRP (15.3 to 11.4%) and AEP (32.3 kg kg−1 to 26.2 kg kg−1), whereas soil available P > 25.0 mg kg−1 maintained the relatively stable YRP and AEP. Also, the YRP and AEP were significantly higher for single‐cropping rice compared to other cropping systems. Moreover, the rice genotypes such as ‘Longdun’, ‘Kendao’ and ‘Jigeng’ had higher YRP and AEP than the average value. Overall, the fertilizer‐P rate was the primary factor affecting YRP and AEP, and the recommended P fertilizer rate can be reduced by 9–21 kg P ha−1 compared to existing expert recommendations.CONCLUSIONThe present study highlights the role of fertilizer‐P rate in maximizing the YRP and AEP, thereby providing a strong basis for future fertilizer management in rice cultivation systems. © 2023 Society of Chemical Industry.

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Risks of phosphorus runoff losses from five Chinese paddy soils under conventional management practices

Cited by 59 publications

References 39 publications

Recent advances in control technologies for non-point source pollution with nitrogen and phosphorous from agricultural runoff: current practices and future prospects

Recent advances in control technologies for non-point source pollution with nitrogen and phosphorous from agricultural runoff: current practices and future prospects

Water Quality in Irrigated Paddy Systems

Fertilization as the most critical factor affecting yield response and agronomic efficiency of phosphorus in Chinese rice production: evidence from multi‐location field trials

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