Yield and quality of intercropped wheat in jujube‐ and walnut‐based agroforestry systems in southern Xinjiang Province, China

Qiao, Xu; Xiao, Li; Gao, Yonghong; Zhang, Wen; Chen, Xingwu; Sai, Lihan; Jin, Lei; Xue, Lianqing; Zhang, Yongqiang; Li, Ailian

doi:10.1002/agj2.20270

Cited by 7 publications

(4 citation statements)

References 43 publications

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“…Significant variations in both protein and amino acid contents were observed in [62] through six quinoa varieties cultivated under different pedoclimatic conditions. Similar findings were reported by [22] on wheat in olive-based agroforestry (4%), [63] on wheat in jujube-and walnut-based agroforestry, and [64] on soybean under Aonla trees. In [25,51], positive correlations between shade and protein content were reported.…”

Section: Seed Nutritional Qualitysupporting

confidence: 83%

Quinoa–Olive Agroforestry System Assessment in Semi-Arid Environments: Performance of an Innovative System

Abidi,

Daoui,

Abouabdillah

et al. 2024

Agronomy

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Agroforestry is a promising way to sustain land use efficiency in semi-arid areas. In this study, we introduce quinoa as a drought- and salinity-tolerant crop in olive-based agroforestry. We investigated how the microclimate created by olive trees affects agronomic and biochemical traits in quinoa and evaluated the performance of this new olive-based agroforestry system in terms of land equivalent ratio (LER). Field experiments were carried out under two pedoclimatic conditions (S1) and (S2) using a randomized complete block design with two cropping systems (sole crop (SCS) and agroforestry (AFS) systems), four quinoa cultivars (Puno, Titicaca, ICBA-Q5, and ICBA-Q4) and one olive orchard as a control (OR) in each block. Our results show that AFS had lower grain yield (−45%), dry biomass (−49%), and crop water productivity (−44%), but higher plant height (12%), grain protein (4%), saponin (26%), total polyphenol (12%), and DPPH (9%) contents compared to SCS. The highest grain yield was recorded for Titicaca and ICBA-Q5 (1.6 t ha−1). The LER ranged from 1.57 to 2.07, indicating that the overall productivity was 57% to 107% higher in the agroforestry system compared with the monoculture. We suggest that quinoa–olive tree intercropping could be a promising agroecological practice under semi-arid conditions.

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Section: Seed Nutritional Qualitysupporting

confidence: 83%

Quinoa–Olive Agroforestry System Assessment in Semi-Arid Environments: Performance of an Innovative System

Abidi,

Daoui,

Abouabdillah

et al. 2024

Agronomy

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“…(2017) indicated that the irradiance was reduced by 60% below crowns of shade trees, but coffee ( Coffea L.) light‐use efficiency increased by 50%. In our previous studies we also found that the mean PAR in the understory of walnut trees was reduced by 72.4–79.7%, whereas the net photosynthetic rate was only decreased by 45.8–49.6%, as compared to wheat grown in monoculture (Qiao et al., 2020). Meanwhile in the present study, we also could see understory mean daily PAR decreased by 87.0, 73.7, and 52.3% (Figure 4), and Pn of flag leaves were decreased by 31.6, 14.1, and 3.3% (Figure 5), respectively, at distances of 1.5, 2.5, and 3.5 m to a row of 10‐yr‐old trees at the filling stage.…”

Section: Discussionmentioning

confidence: 70%

“…And this reduction was related to reductions in spike number, grains per spike, and thousand‐grain weight (Table 4; Supplemental Table S3). The declines in the spike number, grains per spike, and thousand‐grain weight were caused by the reductions in tillers, florets and spikelets per spike, and grain‐filling rates, respectively, in agroforestry systems (Qiao et al., 2020). This was also partly confirmed by Inurreta‐Aguirre et al.…”

Section: Discussionmentioning

confidence: 99%

Intercropping wheat between walnut trees reduced yield and improved quality

et al. 2021

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Agroforestry is a common traditional practice in southern Xinjiang, northwest China. However, intercropping productivity has failed to meet expectations in many agroforestry systems as tree aged. Therefore, this study invested why this occurred. We chose walnut (Juglans regia L. Wen-185) tree-based agroforestry systems to investigate the influence of walnut tree shade intensity on the grain yield and quality of intercropped wheat (Triticum aestivum). This replicated study was conducted in Southern Xinjiang China in 2011 and 2012. Walnut tree canopy reduced understory photosynthetically active radiation, decreased photosynthetic rates of intercropped wheat, decreased grain yield, spike number, grains per spike, and thousand-grain weight. However, grain protein and wet gluten contents were improved. Significant negative linear correlations were detected between grain yield and N content with walnut tree age, but significant positive correlations were found between protein and wet gluten contents with walnut tree age. Protein and wet gluten contents were negatively correlated with grain yield, and with thousand-grain weight. In conclusion, although grain yield was significantly decreased, grain quality was enhanced in walnut tree-based agroforestry systems. The competition for light between walnut trees and intercrops could be alleviated by pruning, selective felling, and wider tree spacing.

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“…Light competition between trees and crops is the predominant factor limiting crop growth (Dupraz et al, 2018). Wheat in the PWW system can receive higher light intensity and longer light duration for growth due to the widely spaced arrangement of poplars (Kittur et al, 2016; Qiao et al, 2020). Therefore, the PWW system exhibited higher wheat FRLD in comparison with the PWN system.…”

Section: Discussionmentioning

confidence: 99%

Effects of poplar intercropping systems on reducing the concentration of different forms of inorganic nitrogen in the soil profile

Wang

Yang

et al. 2023

Land Degrad Dev

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This study focused on understanding how different spacing arrangements of poplar (Populus deltoides)–wheat (Triticum aestivum) agroforestry systems and the processes of the tree and wheat roots in these systems impact the elimination efficiency of inorganic nitrogen from soil. Three planting systems were tested: a monoculture wheat system (control), a widely spaced wheat–poplar system (PWW) and a narrowly spaced wheat–poplar system (PWN). Soil and root samples were collected in four different soil layers (0–20, 20–40, 40–60, and 60–100 cm) at four different sampling sites (PWN: 0, 1.5, 2.5, and 3.5 m; PWW: 0, 1.5, 3.5, and 7 m from tree row, respectively). The nitrate–nitrogen (), ammonium–nitrogen (), and nitrite–nitrogen () in the soil samples were analyzed to determine the elimination efficiency of the different systems. The results indicated that the concentration and soil accumulation content reduction of inorganic nitrogen in the two intercropping systems, especially in the PWW system, were encouraging compared to those in the control system. The and concentration reductions and poplar fine root length density (FRLD) were higher at the sampling point near the poplar row, especially in surface soil (p < 0.05), but the distribution of the wheat FRLD decreased with soil depth and proximity to the poplar trunk. Furthermore, the poplar and wheat FRLD had significant positive relationships with the concentration reduction of inorganic nitrogen. In conclusion, poplar–agroforestry systems should be considered as an important method for controlling nonpoint pollution from farmland.

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Yield and quality of intercropped wheat in jujube‐ and walnut‐based agroforestry systems in southern Xinjiang Province, China

Cited by 7 publications

References 43 publications

Quinoa–Olive Agroforestry System Assessment in Semi-Arid Environments: Performance of an Innovative System

Quinoa–Olive Agroforestry System Assessment in Semi-Arid Environments: Performance of an Innovative System

Intercropping wheat between walnut trees reduced yield and improved quality

Effects of poplar intercropping systems on reducing the concentration of different forms of inorganic nitrogen in the soil profile

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