Exploring optimal catch crops for reducing nitrate leaching in vegetable greenhouse in North China

Zhang, Hongyuan; Hu, Kelin; Zhang, Lijuan; Ji, Yanzhi; Qin, Wei

doi:10.1016/j.agwat.2018.09.018

Cited by 33 publications

(23 citation statements)

References 42 publications

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“…However, to obtain high yields within short periods, growers often use large amounts of fertilizers, especially nitrogen (N) fertilizers. It was reported that the rate of N application in GVP systems (up to 1000 kg N ha −1 ) was approximately 7 times that in cropland [14]. However, excess chemical N addition can reduce vegetable quality and simultaneously leads to a series of soil and environmental problems (i.e., soil acidification and biological quality degradation) in the GVP system [15].…”

Section: Introductionmentioning

confidence: 99%

Substitution of manure for chemical fertilizer affects soil microbial community diversity, structure and function in greenhouse vegetable production systems

Luan

Gao²,

Huang

et al. 2020

PLoS ONE

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Section: Introductionmentioning

confidence: 99%

Substitution of manure for chemical fertilizer affects soil microbial community diversity, structure and function in greenhouse vegetable production systems

Luan

Gao²,

Huang

et al. 2020

PLoS ONE

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“…Recently, an integrated soil-crop model (WHCNS, soil water-heat-carbon-nitrogen simulator) was developed based on the Chinese climate, soil types, and field management and the model has been successfully applied to simulate water use, N loss, and N use efficiency in China [30][31][32]. Previous research showed that the model simulated soil and crop indicators agreed well with observed data [33]. However, there is still limited work on the simulation of water and nitrogen balance under diversified crop rotations using this model.…”

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confidence: 99%

Modeling Water and Nitrogen Balance of Different Cropping Systems in the North China Plain

Leghari

Liang

et al. 2019

Agronomy

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The North China Plain (NCP) is experiencing serious groundwater level decline and groundwater nitrate contamination due to excessive water pumping and application of nitrogen (N) fertilizer. In this study, grain yield, water and N use efficiencies under different cropping systems including two harvests in 1 year (winter wheat-summer maize) based on farmer (2H1Y) FP and optimized practices (2H1Y) OPT , three harvests in 2 years (winter wheat-summer maize-spring maize, 3H2Y), and one harvest in 1 year (spring maize, 1H1Y) were evaluated using the water-heat-carbon-nitrogen simulator (WHCNS) model. The 2H1Y FP system was maintained with 100% irrigation and fertilizer, while crop water requirement and N demand for other cropping systems were optimized and managed by soil testing. In addition, a scenario analysis was also performed under the interaction of linearly increasing and decreasing N rates, and irrigation levels.Results showed that the model performed well with simulated soil water content, soil N concentration, leaf area index, dry matter, and grain yield. Statistically acceptable ranges of root mean square error, Nash-Sutcliffe model efficiency, index of agreement values close to 1, and strong correlation coefficients existed between simulated and observed values. We concluded that replacing the prevalent 2H1Y FP with 1H1Y would be ecofriendly at the cost of some grain yield decline. This cropping system had the highest average water use (2.1 kg m −3 ) and N use efficiencies (4.8 kg kg -1 ) on reduced water (56.64%) and N (81.36%) inputs than 2H1Y FP . Whereas 3H2Y showed insignificant results in terms of grain yield, and 2H1Y FP was unsustainable. The 2H1Y FP system consumed a total of 745 mm irrigation and 1100 kg N ha -1 in two years. When farming practices were optimized for two harvests in 1 year system (2H1Y) OPT , then grain yield improved and water (18.12%) plus N (61.82%) consumptions were minimized. There was an ample amount of N saved, but water conservation was still unsatisfactory. However, considering the results of scenario analyses, it is recommended that winter wheat would be cultivated at <200 mm irrigation by reducing one irrigation event.Since the 1970s, the annual use of the two-harvest cropping system greatly increased the total grain output. However, it has also caused severe groundwater decline [7,8], because both crops generally have high water requirements to complete their life cycle [9,10]. Crop water requirement does not meet the balance between groundwater recharge through rain and evapotranspiration (ET) loss from plant and soil [11]. An estimated amount of more than 450 mm yr −1 irrigation water is required to maintain high crop yield under the conventional double cropping system [12], which dominatingly depends on pumping of groundwater, and there is no access to irrigation from the river source. Thus, the groundwater is almost the only source of irrigation [13]. In the last 20 years, sustained water pumping has adversely affected aquifers. Consequently, the groundwater leve...

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“…Inexpedient agricultural intensification practices in greenhouse vegetable systems coupled with irresponsible use of organic and inorganic fertilizers and high inputs of water has deteriorated soil health and the aquatic environments (Verma et al, 2017;Haddad et al, 2019;Zhang et al, 2019). Monocropping is a management practice of farming where fields are often replanted season after season with one type of cropping, such as catch crops.…”

Section: Introductionmentioning

confidence: 99%

“…Farmers considering that it is a favorable action against yield shortage and their economic consequences. However, when input of nitrogen exceeds the demand, plants are no longer able to absorb it, and nitrogen then builds up in the soil, mostly as nitrates (Abo-Bakr and El-Iraqi 1986;Vogeler et al, 2019;Zhang et al, 2019). This causes imbalance of nutrients in the soil and increases the nitrate level in groundwater supplies (NAAS, 2005) which influences the nitrate content of plants (Dapoigny et al, 2000), especially the leafy and tuber vegetables like radish, watercress and lettuce (Imthiyas and Seran, 2017;Verma et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…This causes imbalance of nutrients in the soil and increases the nitrate level in groundwater supplies (NAAS, 2005) which influences the nitrate content of plants (Dapoigny et al, 2000), especially the leafy and tuber vegetables like radish, watercress and lettuce (Imthiyas and Seran, 2017;Verma et al, 2017). Nitrate has long been one of the highly problematic issues, always being talked about, whether with pride or with horror (Vogeler et al, 2019;Zhang et al, 2019). There are conflicting evidences regarding the potential long-term health risks associated with nitrate levels encountered in the human diet.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Environmental Hazards and Agronomic Benefits of Organic and Inorganic Nitrogen Fertilization to Sandy Soils Monocropped with Radish. المخاطر البیئیة والفوائد الزراعیة للتسمید النیتروجینی العضوی وغیر العضوی للأراضی الرملیة المزروعه بالفجل.

طنطاوي¹,

هاشم²,

عبدالعظيم³

2019

Journal of Plant Production

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Application of organic in combinations with inorganic N fertilizers can supply plants with all necessary nutrients in slowly available forms without environmental pollution. Vegetable field trials were conducted under controlled greenhouse conditions for two successive seasons using radish as a catch crop in order to evaluate environmental hazards and agronomic benefits of applying different combinations of organic and inorganic N fertilizers to sandy soil. Over both seasons of this study, improvements in growth quality parameters of radish plants were in most cases not significantly different at the higher fertilizer application rates of 120 and 180 kg ha-1. This finding indicates that radish response as a catch crop owing to the increasing of fertilizer application rate is subjected to diminishing returns, beyond which further additions will not improve the yield but pollute soil environment.Results of this research showed that, major considerations in applying of inorganic N fertilizers alone on sandy soils monocropped with catch crops are the increase in residual nitrate in soils, the increase in groundwater contamination potentials by nitrate, and the threat of nitrates build-up in plant tissues. Under conditions of this study, high application rates of inorganic nitrogen fertilizer (180 kg ha-1) caused high levels of nitrate accumulation in radish, and on being consumed by human beings, pose serious health hazards. In general, at the rate of 120 kg ha-1 equal combined organic and inorganic fertilizers, no health problems could be foreseen to humans or animals from food chain movement of nitrates. From this research it could be concluded that incorporation of combined organic and inorganic fertilizers into sandy soil monocropped with catch crops at the rate of 120 kg ha-1 nitrogen using drip irrigation system was the best management strategy practice to reach optimum agronomic benefits while minimizing environmental and health hazards.

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Exploring optimal catch crops for reducing nitrate leaching in vegetable greenhouse in North China

Cited by 33 publications

References 42 publications

Substitution of manure for chemical fertilizer affects soil microbial community diversity, structure and function in greenhouse vegetable production systems

Substitution of manure for chemical fertilizer affects soil microbial community diversity, structure and function in greenhouse vegetable production systems

Modeling Water and Nitrogen Balance of Different Cropping Systems in the North China Plain

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