Comparisons between diversified multicropping systems in terms of crop productivity, economic benefits and carbon footprint in the Pearl River Delta region of South China

Cai, Guangyuan; Su, Xiaojin; Li, Yuliang; Wang, Xiaolong

doi:10.1016/j.farsys.2023.100051

Cited by 3 publications

(2 citation statements)

References 56 publications

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“…Tahir et al [23] indicated that growing faba bean as an intercrop increases the biomass productivity of the crop and improves yield quality. Cai et al [24] noted that faba bean increases the concentration of nutrients at the soil surface, leading to increased productivity of multi-crops. In their experiment, when maize was grown with rice and vetch, a significant increase in soil organic carbon was found, which was 4.12% higher than when maize was grown with rice (p < 0.05).…”

Section: Level 1: Total Dried Crop Biomassmentioning

confidence: 99%

Comprehensive Assessment of the Effect of Multi-Cropping on Agroecosystems

Balandaitė,

Romaneckas,

Kimbirauskienė

et al. 2024

Plants

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Multi-cropping is becoming an increasingly popular technique in agriculture to tackle major and complex agroecosystem problems such as biodiversity and soil fertility loss, erosion and degradation, increased greenhouse gas emissions, etc. Comprehensively assessing the impact of multi-cropping intensity on agroecosystems is a new and still under-researched approach that can provide a better understanding of the impact of individual indicators on the overall functioning of biodiverse agroecosystems. Data from a stationary field experiment using multi-cropping at the Vytautas Magnus University Experimental Station between 2020 and 2022 were used to carry out this study. The study included maize, hemp, and faba bean as single, binary, and ternary crops. A complex assessment approach (CEI value) was used to determine the impact of these crops on the agroecosystem, the interrelationships between the main indicators, and the strength of their effects. It was found that the ternary maize–hemp–faba bean crop had the most positive effect on the agroecosystem. The effectiveness of other crops was 2 to 35% less. The lowest value was calculated for the maize–faba bean crop.

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Section: Level 1: Total Dried Crop Biomassmentioning

confidence: 99%

Comprehensive Assessment of the Effect of Multi-Cropping on Agroecosystems

Balandaitė,

Romaneckas,

Kimbirauskienė

et al. 2024

Plants

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“…This observation aligns with Sun et al's findings (2021) [20], which highlighted the substantial potential for improvement in the technical efficiency of chemical fertilizer use in China's primary rice-producing provinces. Excessive application of agricultural inputs directly correlates with increased greenhouse gas (GHG) emissions [56]. Indeed, rice agroecosystems are responsible for approximately 48% of global farmland GHG emissions [57,58].…”

Section: Provincial Variations In Indica Rice Eco-efficiency and Tech...mentioning

confidence: 99%

Assessing Eco-Efficiency with Emphasis on Carbon Emissions from Fertilizers and Plastic Film Inputs

Lu,

Sun,

Yao

et al. 2023

Agronomy

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In the context of growing environmental challenges and the push for sustainable agriculture, this study delves into the eco-efficiency of three-season indica rice across 16 key provinces in China from 2004 to 2021. Utilizing the super-efficiency Slacks-Based Measure (SBM) model coupled with the Malmquist index, our approach uniquely incorporates undesirable outputs, focusing on carbon emissions from chemical and plastic inputs. Findings indicate that while the overall efficiency hinged around a modest mean, periods like 2005–2006 and 2017–2018 spotlighted the pivotal role of technological advancements and judicious resource use. The Malmquist Index revealed an intricate interplay between technological change and efficiency, notably when accounting for environmental impact. Diverse provincial efficiencies spotlighted the need for bespoke strategies harmonizing efficiency objectives with ecological sustainability. This study emphasizes the indispensable role of technological innovation in advancing eco-efficiency and fostering sustainable agricultural practices, urging for policy changes that prioritize both technology adoption and ecological awareness.

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Optimizing the Nitrogen Fertilizer Management to Maximize the Benefit of Straw Returning on Early Rice Yield by Modulating Soil N Availability

Hu,

Guan,

Liang

et al. 2024

Agriculture

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Straw returning has gradually been adopted as an effective approach to address the serious degradation of farmland. However, the carbon/nitrogen (C/N) ratio of rice straw is generally too high for microorganisms to decompose the organic materials and release nutrients, which may minimize the benefits of straw returning to the agricultural production system. This study aimed to investigate the effects of straw returning on rice production and propose optimum nitrogen (N) management for early rice production under a straw returning system. The total N fertilizer that was evaluated was 165 kg N ha-1, urea (46% N), applied in different proportions in three stages of rice cultivation: basal, tillering, and panicle. Using no straw returning with the N fertilizer ratio of basal:tillering:panicle = 5:2:3 treatment (T1) as the control, four different N fertilizer ratios of basal:tillering:panicle, including 5:2:3 (T2), 5:2:2 (T3), 5:4:1 (T4), and 5:5:0 (T5) were set under straw returning. The return of straw decreased the available N in the soil at the tillering stage, and impeded root growth and the crop canopy from establishing, which decreased the effective panicles by 10.1% compared with that of T1, limiting the increases in rice grain yield. Increasing the N fertilizer ratio 10–20% (T3 and T4) at the tillering stage effectively increased the content of soil ammonium and nitrate nitrogen, improved the root growth, and increased the root activities by 16.0–40.5% at the tillering stage. As a result, the effective panicle number increased by 5.1–16.2%. Among these, T4 treatment maximized the benefits of straw returning the most. Additionally, increasing the N fertilizer ratio at the tillering stage increased the shoot uptake across the early rice growing season and synchronized crop N uptake with the accumulation of carbon assimilates, which enhanced the crop growth rate and increased the rice yield by 13.5–25.1%. It is concluded that increasing the N fertilizer ratio by 20% at the tillering stage is a promising strategy to increase the availability of N in the phases of high demand for this nutrient.

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Comparisons between diversified multicropping systems in terms of crop productivity, economic benefits and carbon footprint in the Pearl River Delta region of South China

Cited by 3 publications

References 56 publications

Comprehensive Assessment of the Effect of Multi-Cropping on Agroecosystems

Comprehensive Assessment of the Effect of Multi-Cropping on Agroecosystems

Assessing Eco-Efficiency with Emphasis on Carbon Emissions from Fertilizers and Plastic Film Inputs

Optimizing the Nitrogen Fertilizer Management to Maximize the Benefit of Straw Returning on Early Rice Yield by Modulating Soil N Availability

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