Precipitation alters plastic film mulching impacts on soil respiration in an arid area of northwest China

Ming, Guanghui; Hu, Hongchang; Peng, Zhenyang; Yang, Ping; Luo, Yiqi

doi:10.5194/hess-22-3075-2018

Cited by 14 publications

(2 citation statements)

References 36 publications

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“…Lee et al (2019) found PFM increased soil respiration and organic methods enhanced this due to the additions of biomass. However, in contrast to our findings Ming et al (2018) found that PFM resulted in increased growing-season soil respiration in arid areas, but not in climates with >230 mm annual rainfall.…”

Section: Soil Biological Activitycontrasting

confidence: 99%

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Biodegradable plastic mulch films increase yield and promote nitrogen use efficiency in organic horticulture

2023

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Plastic film mulches (PFM) are used extensively due to their ability to increase yield and suppress weed emergence. Their effects on plant-soil-microbial interactions, however, are less well understood. Organic systems rely on the supply of nutrients from organic sources (e.g., manures and fertility-building leys) and where poor N availability often limits yield. The issue is compounded by horticultural crops (e.g., lettuce) with a high N demand, but which are inefficient at recovering N from soil. The effect of PFM on the mineralisation of organic fertilisers and its interaction with other agronomic factors such as planting density is also less well-researched. We hypothesised that biodegradable PFM would be a useful tool to increase the efficiency of N management in organic horticulture by increasing the supply of available N leading to increased crop N uptake and crop yield, and simultaneously reducing N losses during the growing season. We conducted two field experiments under a temperate maritime climate with lettuces grown with either conventional (LDPE) PFM or a polylactic acid-based biodegradable PFM alongside un-mulched controls. The first experiment involved black or white coloured PFMs and two planting densities while the second experiment involved treatments with and without addition of poultry manure. Overall, yields were increased by 39% in both experiments with PFM, while soil mineral N concentrations were up to 5 times higher with PFM than without. Measurements of soil organic matter (SOM) turnover (Tea Bag Index) and soil CO2 efflux indicated a more rapid decay of SOM in the presence of the PFM. The use of PFM also promoted N use efficiency (NUE) by 300% in the presence of poultry manure. Denser planting with PFM resulted in proportionately higher yields. Higher yield and higher N concentrations (5-10%) in crop tissue in mulched plots resulted in higher total N uptake, however, total N uptake was low compared to soil concentrations: mulching with biodegradable PFM resulted in higher residual mineral N than un-mulched plots (77-147 mg kg-1 vs. 19 -70 mg kg-1). Our results are consistent with reduced N losses to the environment during the growing season and increased mineralisation under PFM. In conclusion, our findings support the adoption of PFM for organic horticulture and show that biodegradable PFM perform similarly to LDPE-based PFMs.

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Section: Soil Biological Activitycontrasting

confidence: 99%

“…Studies have found elevated concentrations of CO 2 under polythene films (Nan et al, 2016;Shahzad et al, 2019). Future experiments should use an improved methodology, which looks at efflux through the film, planting holes, and at the edges of the bed, such as that used by Ming et al (2018).…”

Section: Soil Biological Activitymentioning

confidence: 99%

Biodegradable plastic mulch films increase yield and promote nitrogen use efficiency in organic horticulture

2023

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Infiltration Characteristics of Film Hole Irrigation Under the Influence of Multiple Factors

Zhong

Fei

2020

Irrigation and Drainage

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Film hole irrigation is a new type of film‐mulched irrigation technology. To investigate the influences of five factors—bulk density, initial soil water content, irrigation depth, film hole diameter and infiltration time—on the infiltration characteristics of film hole irrigation, 12 experiments were conducted. The infiltration characteristics considered were the cumulative infiltration (I), infiltration rate (i) and average increment of soil water content (∆θ). Two empirical models were established that describe the relationship of I with ∆θ and various influential factors. The proposed models of I and ∆θ had a root mean square error of 5.82 ml and 0.003 cm3 cm−3, respectively. The results revealed that the effects of initial soil water content and irrigation depth on I were not significant (P > 0.05) and that the ranking of factors according to degree of influence, from large to small, was infiltration time, soil bulk density and film hole diameter. Soil bulk density, initial soil moisture, irrigation depth and film hole diameter had highly significant effects on ∆θ (P < 0.01), and their ranking according to degree of influence, from large to small, was initial moisture content, soil bulk density, irrigation depth and film hole diameter. © 2020 John Wiley & Sons, Ltd.

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Mulching Effects on Soil Greenhouse Gas Emission in Agricultural Systems

Liao¹,

Malghani²,

Ali³

et al. 2022

Mulching in Agroecosystems

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Precipitation alters plastic film mulching impacts on soil respiration in an arid area of northwest China

Cited by 14 publications

References 36 publications

Biodegradable plastic mulch films increase yield and promote nitrogen use efficiency in organic horticulture

Biodegradable plastic mulch films increase yield and promote nitrogen use efficiency in organic horticulture

Infiltration Characteristics of Film Hole Irrigation Under the Influence of Multiple Factors

Mulching Effects on Soil Greenhouse Gas Emission in Agricultural Systems

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