Intercrops improve surface water availability in rubber-based agroforestry systems

Yang, Bin; Meng, Xianjing; Singh, Anurag; Wang, Pingyuan; Song, Liang; Zakari, Sissou; Liu, Wenjie

doi:10.1016/j.agee.2020.106937

Cited by 25 publications

(13 citation statements)

References 32 publications

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“…When soil resources are abundant and evenly distributed, plants mainly absorb resources in shallow soil (Yang et al, 2020), resulting in a large change in water and nutrient content in the shallow soil layer and small changes in the deep layer in irrigated agroforestry systems Relationship between ne root distribution and soil water and nitrogen distribution Whether agroforestry has an overall positive or negative effect on soil moisture remains a focus of studies investigating water dynamics in arid and semiarid regions (Yun et al, 2012). In this experiment, analyzing the correlation between the distribution of ne roots and the soil water content and soil nitrate nitrogen distribution in single-cropping apple and soybean-apple intercropping treatments demonstrated that compared with apple monocropping, soybean and apple intercropping reduced the correlation coe cient between the root system and the soil moisture and nitrate nitrogen content.…”

Section: Soil No 3 − −N Contentmentioning

confidence: 99%

The relationship between root growth, soil resources, and productivity in an apple–soybean irrigated agroforestry system in northwest China

Shen

Wang

Liu

et al. 2022

Preprint

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Background and aims Understanding the relationship between roots, soil moisture, and nutrients in agroforestry systems in irrigated orchards is critical for optimizing orchard management in arid regions. However, there are still many knowledge gaps in this area. Our goals were to (i) explore the spatiotemporal distribution of fine roots for two species under irrigated conditions; (ii) investigate the relationship between fine roots, soil moisture, and nutrients; and (iii) evaluate the productivity of irrigated agroforestry systems.Methods An orchard with soybeans and apples as intercropping materials was established, including single-cropping soybean, single-cropping apple, and apple–soybean intercropping treatments. Data were collected on the spatiotemporal distribution of fine roots and soil resources under apple monocropping and soybean–apple intercropping treatments in 2020–2021, soybean and apple yield, and yield components.Results Compared with apple monocropping, apple–soybean intercropping increased the richness of fine roots in the field. Apple fine roots decreased in the shallow layer and increased in the deep layer in the area where the species overlapped, which increased the soil water content, decreased the nitrate nitrogen content, decreased the effects of soil moisture and nitrate nitrogen on fine roots，increased soybean plant height and leaf area, decreased stem diameter, increased the number of pods per plant and grains per pod, and decreased the 100-grain weight. The LER (land equivalent ratio) = 1.41.Conclusions Irrigated agroforestry increased the richness of fine roots under soybean–apple intercropping, reduced the dependence of root growth on soil resources, eased competition among species, and achieved higher productivity.

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Section: Soil No 3 − −N Contentmentioning

confidence: 99%

The relationship between root growth, soil resources, and productivity in an apple–soybean irrigated agroforestry system in northwest China

Shen

Wang

Liu

et al. 2022

Preprint

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“…Spatial water resource partitioning is considered one of the essential plant strategies to maintain 455 coexistence in mixed plantations, especially in semiarid and arid regions (Munoz-Villers et al, 2020;Silvertown et al, 2015;Yang et al, 2020). However, water source competition has widely been observed among coexisting plant species according to the literature surveys by Silvertown et al (2015) and Tang et al (2018), regardless of annual average rainfall amount.…”

Section: Rainwater Uptake Enhances Water Consumption For Coexisting Species In Mixed Plantationmentioning

confidence: 99%

“…CC BY 4.0 License. however, overlapping water sources among plant species may lead to competition in arid and semiarid regions (Tang et al, 2019;Yang et al, 2020). Rainfall pulses have been observed to relieve or eliminate water competition and thus maintain or increase plant water consumption in some water limited regions 70 (Du et al, 2011;Tfwala et al, 2019).…”

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confidence: 99%

Differential response of plant water consumption to rainwater uptake for dominant tree species in the semiarid Loess Plateau

Tang

Wang

et al. 2021

Preprint

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Abstract. Whether uptake of rainwater can increase plant water consumption in response to rainfall pulses requires investigation to evaluate the plant adaptability, especially in water limited regions where rainwater is the only replenishable soil water source. In this study, the water sources from rainwater and three soil layers, predawn (Ψpd), midday (Ψm) and gradient (Ψpd−Ψm) of leaf water potential, and water consumption in response to rainfall pulses were analyzed for two dominant tree species, Hippophae rhamnoides and Populus davidiana, in pure and mixed plantations during the growing period (June–September). In pure plantations, the relative response of daily normalized sap flow (SFR) was significantly affected by rainwater uptake proportion (RUP) and Ψpd−Ψm for H. rhamnoides, and was only significantly influenced by Ψpd−Ψm for P. davidiana (P < 0.05). Meanwhile, the large Ψpd−Ψm was consistent with high SFR for H. rhamnoides, and the small Ψpd−Ψm was consistent with the low SFR for P. davidiana, in response to rainfall pulses. Therefore, H. rhamnoides and P. davidiana exhibited sensitive and insensitive responses to rainfall pulses, respectively. Furthermore, mixed afforestation significantly enhanced RUP, SFR, and reduced the water source proportion from the deep soil layer (100–200 cm) for both species (P < 0.05). The SFR was significantly influenced by RUP and Ψpd−Ψm for both species in the mixed plantation. Lower Ψm and higher Ψpd were adopted by H. rhamnoides and P. davidiana in mixed plantation, respectively, to enlarge Ψpd−Ψm, enhance rainwater uptake, and decrease water source competition from the deep soil layer. These results indicate that mixed afforestation enhanced the influence of rainwater uptake to water consumption after rainfall pulse, regardless of sensitivity to rainfall pulses. This study provides insights into suitable plantation species selection and management considering the link between rainwater uptake and consumption in water limited regions.

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“…Figure 7 shows how the presence of trees/shrubs in cropping systems facilitates resource use to the benefit of the associated food crop. Yang et al (2020) observed that rubber tree takes more than 40% of its soil water from the shallow horizon (0-20 cm) of the soil resulting in an interspecific competition between rubber tree and their intercrop. However, the intercrop facilitated soil water to the rubber enabling it to acquire about 9-24% of its soil moisture requirement from the shallow soil horizon (0-20 cm).…”

Section: Agroforestry Facilitate Resource Use In Cropping Systemsmentioning

confidence: 99%

Carbon Smart Strategies for Enhanced Food System Resilience Under a Changing Climate

Yeboah

Danquah

Oteng‐Darko

et al. 2021

Front. Sustain. Food Syst.

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There is an urgent need to match food production with increasing world population through identification of sustainable land management strategies. However, the struggle to achieve food security should be carried out keeping in mind the soil where the crops are grown and the environment in which the living things survive, especially under rainfed agricultural system. Rainfed agricultural ecosystem is extremely fragile, improving soil fertility and reducing greenhouse gas emission are key factors for developing sustainable agriculture. Moreover, society increasingly expects agriculture to be more sustainable, by decreasing irrigation and mineral fertilizer inputs. Increasing food production sustainably through efficient use of resources will strongly contribute to food security, sustainable agriculture development, and increased climate change resilience. This paper addresses the effects of carbon smart technologies on greenhouse gas emission, soil quality and crop productivity in rainfed agro ecological environment. This paper hypothesized that application of carbon smart technologies could improve soil physical and chemical properties to enhance GHG mitigation and crop production. Carbon smart technologies highlighted in this paper include minimum tillage, crop residue retention, agroforestry, biofuels, integrated nutrient management and land use management systems. This paper review and discusses the work done on carbon smart technologies in different agro-ecological regions so as to understand its impact from the perspectives of the soil, the crop and the environment. The impact of conservation agriculture on greenhouse gas emissions and the underlying mechanism in different agroecological environments have been discussed. A detailed case study and tremendous advancements on the strength of integration of trees and shrub as carbon smart technologies in improving soil and crop productivity is highlighted immensely. The paper concludes with recommendations for encouraging and improving adoption by smallholder farmers to ensure more efficient and sustainable food system. This systematic review will primarily contribute to the achievement of the following Sustainable Development Goals (SDGs), particularly SDG1 (No poverty), SDG2 (Zero hunger), SDG5 (Gender equality) and SDG13 (Climate action).

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Intercrops improve surface water availability in rubber-based agroforestry systems

Cited by 25 publications

References 32 publications

The relationship between root growth, soil resources, and productivity in an apple–soybean irrigated agroforestry system in northwest China

The relationship between root growth, soil resources, and productivity in an apple–soybean irrigated agroforestry system in northwest China

Differential response of plant water consumption to rainwater uptake for dominant tree species in the semiarid Loess Plateau

Carbon Smart Strategies for Enhanced Food System Resilience Under a Changing Climate

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