Benefit of using biodegradable film on rice grain yield and N use efficiency in ground cover rice production system

Zhang, Yanan; Liu, Meiju; Dannenmann, Michael; Ya, Tao; Yao, Zhisheng; Jing, Ruying; Zheng, Xunhua; Butterbach‐Bahl, Klaus; Lin, Shan

doi:10.1016/j.fcr.2016.10.022

Cited by 41 publications

(23 citation statements)

References 35 publications

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“…Conventional plastic processing technology has been adapted to manufacture biodegradable plastic mulch. 10 A number of biopolymers such as polylactic acid (PLA) and polyhydroxyalkanoates (PHA) play an important role in manufacturing biodegradable plastic mulch. Biodegradable polymers can be made by processes that use additives to improve the mechanical and physical properties of the resultant film.…”

Section: Introductionmentioning

confidence: 99%

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Effective Control against Broadleaf Weed Species Provided by Biodegradable PBAT/PLA Mulch Film Embedded with the Herbicide 2-Methyl-4-Chlorophenoxyacetic Acid (MCPA)

Khan

Kaur

Baldwin

et al. 2020

ACS Sustainable Chem. Eng.

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Biodegradable mulches are considered a promising alternative to polyethylene-based, nonbiodegradable mulch for sustainable agriculture. In the present study, a bioactive 2-methyl-4- cholorophenoxyacetic acid/poly(3-hydroxybutyrate- co -3-hydroxyvalerate) (MCPA-PHBV) conjugate blended with biodegradable poly(butylene adipate- co -terephthalate/polylactide (PBAT/PLA) was developed and used as mulch under controlled condition greenhouse pot experiment with fava bean ( Vicia faba ) as the nontarget crop species. The objectives were to examine the effectiveness of sustained-release of MCPA herbicide from biodegradable mulch for broadleaf weed suppression and to assess any adverse effects of the herbicide on the nontarget species (fava bean). The energy-dispersive X-ray spectroscopy analysis (EDS) suggests that a substantial quantity of the herbicide was released from the biodegradable mulch which effectively killed the broadleaf weed species even at 1% MCPA concentration. However, the higher concentrations of the herbicide adversely affected several physiological parameters of fava bean growth and development. Stomatal conductance decreased, while leaf temperature subsequently rose (at MCPA concentrations 5, 7.5, and 10%). The quantum yield of the Photosystem II (PSII) indicates that the photosynthetic efficiency was also restricted at concentrations 7.5% and 10%. Evidently, this slow-release herbicide system worked efficiently for broadleaf weed control but at higher concentrations, resulted in adverse physiological effects on the nontarget crop species. This study has demonstrated that biodegradable mulches containing MCPA herbicide are able to effectively inhibit the growth of broad leaf weed species and may be of potential importance in a wide variety of horticultural and agricultural applications.

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Section: Introductionmentioning

confidence: 99%

“…Biodegradable polymers can be made by processes that use additives to improve the mechanical and physical properties of the resultant film. 10 …”

Section: Introductionmentioning

confidence: 99%

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Effective Control against Broadleaf Weed Species Provided by Biodegradable PBAT/PLA Mulch Film Embedded with the Herbicide 2-Methyl-4-Chlorophenoxyacetic Acid (MCPA)

Khan

Kaur

Baldwin

et al. 2020

ACS Sustainable Chem. Eng.

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“…Another disadvantage of the NFMC system was that it seems to decrease soil organic C. Several previous studies indicated a lower soil organic C content in plastic film‐mulching system than in flooded systems (Sun et al., 2019; Tian, Lu, Fan, Li, & Kuzyakov, 2013; Yang, Mi, Tan, & Onipchenko, 2018). This is a big challenge for the use of NFMC, because the NFMC cultivation system was often used in mountainous areas, where the natural soil fertility is low (Zhang et al., 2017). One method proposed to maintain soil organic C in NFMC systems was the application of biochar.…”

Section: Introductionmentioning

confidence: 99%

Non‐flooding rice yield response to straw biochar and controlled‐release fertilizer

Yang

Liu²,

Mao

et al. 2020

Agronomy Journal

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The non-flooding plastic film-mulching cultivation (NFMC) is an important water-saving rice (Oryza sativa L.) production technique for mountainous areas. Several studies indicated that this promising production system had positive effects on rice growth compared with the traditional flooding method. However, two obvious disadvantages need to be modified for its wider application: technical difficulties for mid-season application of fertilizer and the observed loss of soil C. The solution for these problems may lead to enhanced and more sustainable rice production under NFMC conditions. A 2-yr field experiment was conducted to evaluate the effects of combining straw biochar and controlled-release urea with the NFMC system. The experimental design included two treatments of traditional flooded cultivation: (a) no N fertilizer; (b) urea alone; and four treatments under NFMC conditions: (a) no N fertilizer; (b) urea alone; (c) controlledrelease urea + urea; (d) a combination of straw biochar and controlled-release urea + urea. Compared to a basal application of urea, controlled-release urea plus urea together with straw biochar significantly increased rice grain yield and effective panicles. It also increased total biomass accumulation, the greenness of the leaves (SPAD value) and improved recovery efficiency of applied N. Our results show that the combination of controlled-release urea and straw biochar can increase yield and N use efficiency of rice under NFMC conditions.

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“…Therefore, rapid screening for crops with high yield is extremely important for ensuring the safety of rice production and helping to address food shortage problems [ 4 , 5 ]. The rice panicle, as an important agronomic component [ 6 ], not only is closely associated with yield [ 7 , 8 ] but also plays an important role in disease detection [ 9 ], nutrition examination [ 10 ] and growth period determination [ 11 ]. Thus, accurate panicle segmentation is a key step in rice field phenotyping [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Panicle-SEG: a robust image segmentation method for rice panicles in the field based on deep learning and superpixel optimization

et al. 2017

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BackgroundRice panicle phenotyping is important in rice breeding, and rice panicle segmentation is the first and key step for image-based panicle phenotyping. Because of the challenge of illumination differentials, panicle shape deformations, rice accession variations, different reproductive stages and the field’s complex background, rice panicle segmentation in the field is a very large challenge.ResultsIn this paper, we propose a rice panicle segmentation algorithm called Panicle-SEG, which is based on simple linear iterative clustering superpixel regions generation, convolutional neural network classification and entropy rate superpixel optimization. To build the Panicle-SEG-CNN model and test the segmentation effects, 684 training images and 48 testing images were randomly selected, respectively. Six indicators, including Qseg, Sr, SSIM, Precision, Recall and F-measure, are employed to evaluate the segmentation effects, and the average segmentation results for the 48 testing samples are 0.626, 0.730, 0.891, 0.821, 0.730, and 76.73%, respectively. Compared with other segmentation approaches, including HSeg, i2 hysteresis thresholding and jointSeg, the proposed Panicle-SEG algorithm has better performance on segmentation accuracy. Meanwhile, the executing speed is also improved when combined with multithreading and CUDA parallel acceleration. Moreover, Panicle-SEG was demonstrated to be a robust segmentation algorithm, which can be expanded for different rice accessions, different field environments, different camera angles, different reproductive stages, and indoor rice images. The testing dataset and segmentation software are available online.ConclusionsIn conclusion, the results demonstrate that Panicle-SEG is a robust method for panicle segmentation, and it creates a new opportunity for nondestructive yield estimation.Electronic supplementary materialThe online version of this article (10.1186/s13007-017-0254-7) contains supplementary material, which is available to authorized users.

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Benefit of using biodegradable film on rice grain yield and N use efficiency in ground cover rice production system

Cited by 41 publications

References 35 publications

Effective Control against Broadleaf Weed Species Provided by Biodegradable PBAT/PLA Mulch Film Embedded with the Herbicide 2-Methyl-4-Chlorophenoxyacetic Acid (MCPA)

Effective Control against Broadleaf Weed Species Provided by Biodegradable PBAT/PLA Mulch Film Embedded with the Herbicide 2-Methyl-4-Chlorophenoxyacetic Acid (MCPA)

Non‐flooding rice yield response to straw biochar and controlled‐release fertilizer

Panicle-SEG: a robust image segmentation method for rice panicles in the field based on deep learning and superpixel optimization

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