Less carbon emissions of wheat–maize intercropping under reduced tillage in arid areas

Hu, Fang; Chai, Qiang; Yu, Aizhong; Yin, Wang; Cui, Hongyan; Gan, Yantai

doi:10.1007/s13593-014-0257-y

Cited by 59 publications

(26 citation statements)

References 22 publications

(25 reference statements)

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“…Straw retention combined with no tillage is one of the most common practices used in sustainable agricultural system and plays an important role in increasing the productivity and yield stability to improve resource utilization (Hu et al, 2014;Yin et al, 2015). In the present study, straw retention increased the yield components of rotated maize; in particular, no tillage coupled with straw covering the soil surface (NTS) had the greatest effect on the yield components of rotated maize.…”

Section: Effectiveness Of the Integration Of Improved Farming Practicesmentioning

confidence: 54%

Effects of Previous Wheat Straw on the Yield of Maize in the Oasis Irrigation Region

et al. 2017

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The surface mulch effects on maize (Zea mays L.) production are not well studied. Higher yield depends on coordinated development among the yield components of crops. The purpose of this study was to determine whether plastic film combined with four straw management systems (no tillage with straw standing [NTSS]; no tillage with straw covering [NTS]; tillage with straw incorporation [TIS]; and conventional tillage without straw retention [CT]) could boost grain yield of maize via increasing leaf area index and yield components. This study was conducted in a wheat (Triticum aestivum L.)–maize rotation system from 2009 to 2012 in northwestern China. Plastic film combined with straw retention boosted grain yield by 4.5 to 17.5%, especially, NTS had the highest increasing effect, boosted grain yield by 13.7 to 17.5%, and improved harvest index by 5.4 to 8.4%, compared to CT. Plastic film combined with straw retention significantly increased yield components of maize. Among the three straw retention treatments, NTS increased the maize ear number (EN) by 18.1 to 21.0%, increased the kernel number per ear (KNE) by 63.7 to 67.8%, increased the thousand‐kernel weight (TKW) by 8.7 to 9.6%, compared to CT. Straw retention decreased the maize leaf area index (LAI) before the silking stage and increased the LAI after the silking stage, which effectively regulated the growth and development of maize at early and late stages of development, NTS had the best regulating effect. Path analysis indicated that the integrated system with plastic film combined with straw retention increased the maize grain yield by improving the KNE. We conclude that plastic film combined with previous straw covering can be an effective system for boosting crop productivity by improving the yield components and optimizing LAI dynamics under limited resources in arid environments.

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Section: Effectiveness Of the Integration Of Improved Farming Practicesmentioning

confidence: 54%

Effects of Previous Wheat Straw on the Yield of Maize in the Oasis Irrigation Region

et al. 2017

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“…4a). In other cases, some of the plant rows are irrigated and the other plant rows are left without irrigation but mulched with plastic films as in Fig.4b (Hu et al 2015). In areas with crop straw readily available, straw is used to cover the soil surface of plant rows with alternate rows irrigated (Fig.…”

Section: Fixed Partial Root Zone Irrigation (Fig 3b)mentioning

confidence: 99%

Crop production with limited irrigation: A review

Reddy

Nayak

2018

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When water supplies are restricted, so that full evapotranspiration demands cannot be met, limited irrigation is practised. Management strategy of limited irrigation is to optimise production per unit of applied water rather than to maximise yield per unit of land. Principles that help to facilitate limited irrigation strategies can be broadly grouped into three: agricultural water management, crop considerations and agronomic options. When anticipating low water year, choose crops which maximise production with limited water. In decreasing order of efficiency, short season indeterminate and long season indeterminate crops should be chosen judiciously. Deficit irrigation practices, localised irrigation methods, reducing water losses,conjunctive use of water resources etc can help minimise yield losses due to soil moisture stress. Additional agronomic management options that can maximise production include conservation tillage, advancing or delaying planting dates in order to coincide the crop’s critical period with water availability, decreasing plant competition byreducing seeding density and controlling weeds. Available options to address the challenge of limited irrigation have been briefly presented.

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“…In brief, reduced tillage and no-tillage approaches are characterized by improvements to soil quality, conservation of soil moisture ( Shaver et al, 2002 ), and increases in soil carbon sequestration ( Chatskikh et al, 2008 ). Crop residue when returned to the soil can help to maintain soil moisture ( Yin et al, 2015 ), sequester carbon ( Ghimire et al, 2012 ) and reduce CEs ( Hu et al, 2015 ). Meanwhile, reduced tillage or no-tillage approaches, combined with straw residue, can suppress weeds, decrease the input of herbicides ( Bernstein et al, 2014 ), reduce the influence of machinery, and decrease the cost of crop production ( Garnett et al, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Wheat-Maize Intercropping With Reduced Tillage and Straw Retention: A Step Towards Enhancing Economic and Environmental Benefits in Arid Areas

Yin

Guo

et al. 2018

Front. Plant Sci.

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Intercropping is considered a promising system for boosting crop productivity. However, intercropping usually requires higher inputs of resources that emit more CO2. It is unclear whether an improved agricultural pattern could relieve this issue and enhance agricultural sustainability in an arid irrigation area. A field experiment using a well-designed agricultural practice was carried out in northwest China; reduced tillage, coupled with wheat straw residue retention measures, was integrated with a strip intercropping pattern. We determined the crop productivity, water use, economic benefits, and carbon emissions (CEs). The wheat-maize intercropping coupled with straw covering (i.e., NTSI treatment), boosted grain yield by 27–38% and 153–160% more than the conventional monoculture of maize and wheat, respectively, and it also increased by 9.9–11.9% over the conventional intercropping treatment. Similarly, this pattern also improved the water use efficiency by 15.4–22.4% in comparison with the conventional monoculture of maize by 45.7–48.3% in comparison with the conventional monoculture of wheat and by 14.7–15.9% in comparison with the conventional intercropping treatment. Meanwhile, NTSI treatment caused 7.4–13.7% and 37.0–47.7% greater solar energy use efficiency than the conventional monoculture of maize and wheat, respectively. Furthermore, the NTSI treatment had a higher net return (NR) by 54–71% and 281–338% and a higher benefit per cubic meter of water (BPW) by 35–51% and 119–147% more than the conventional monoculture of maize and wheat, respectively. Similarly, it increased the NR and BPW by 8–14% and 14–16% in comparison with the conventional intercropping treatment, respectively. An additional feature of the NTSI treatment is that it reduced CEs by 13.4–23.8% and 7.3–17.5% while improving CE efficiency by 62.6–66.9% and 23.2–33.2% more than the conventional monoculture maize and intercropping treatments, respectively. We can draw a conclusion that intercropping maize and wheat, with a straw covering soil surface, can be used to enhance crop production and NRs while effectively lowering CO2 emissions in arid oasis irrigation region.

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Less carbon emissions of wheat–maize intercropping under reduced tillage in arid areas

Cited by 59 publications

References 22 publications

Effects of Previous Wheat Straw on the Yield of Maize in the Oasis Irrigation Region

Effects of Previous Wheat Straw on the Yield of Maize in the Oasis Irrigation Region

Crop production with limited irrigation: A review

Wheat-Maize Intercropping With Reduced Tillage and Straw Retention: A Step Towards Enhancing Economic and Environmental Benefits in Arid Areas

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