Exposure of vegetables to simulated volcanic ashfall reveals production loss controlled by plant traits and growth stage

IF 1.3 Q3 AGRONOMY Agrosystems, Geosciences & Environment Pub Date : 2024-06-27 DOI:10.1002/agg2.20494
Noa Ligot, Pierre Miny de Tornaco, Benoît Pereira, Patrick Bogaert, Pierre Delmelle
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Abstract

Explosive volcanic eruptions represent a serious threat to agriculture in many countries. Ashfall can cause substantial damage to crops, jeopardizing farmers' livelihoods and potentially endangering food security. Previous field-based studies have associated ash impact on crops with the deposit thickness, or, correspondingly, with the mass load. However, non-volcanic factors, including plant traits and growth stage, also influence the vulnerability of crops to ashfall. To accurately estimate the risk of crop production loss in ash-prone areas, it is essential to evaluate how these factors govern the impact of ash on crops. We grew leafy (lettuce, Lactuca sativa; hative d'Heverlée, and cabbage, Brassica oleracea; cabus de Chateaurenard) and bulb and root (onion, Allium cepa; blanc premier, and carrot, Daucus carota; hative d‘Oxhella) vegetables in a greenhouse and exposed them at two growth stages to simulated ash deposits ranging from 5 to 40 kg m−2. Our results confirm that crop production loss increases with higher ash mass load, reaching 27%–69% for deposits of 20–40 kg m−2. Additionally, they indicate a higher vulnerability of carrot and onion plants than previously reported. Lettuce and cabbage plants were more severely impacted by ash compared to onion and carrot plants, illustrating the role of plant traits in controlling ash interception and retention on foliage. Furthermore, the plant growth stage emerged as another vulnerability factor. Using the new impact data, we calculated a theoretical production loss in a cultivated area potentially affected by ashfall. This revealed that a significant portion of the crop production loss can be associated with low ash mass loads (5 kg m−2), emphasizing the importance of including distal regions in the impact assessment of ashfall on crops.

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将蔬菜暴露于模拟火山灰降过程中,发现产量损失受植物性状和生长阶段的控制
火山爆发对许多国家的农业构成严重威胁。落灰会对农作物造成重大损害,危及农民的生计,并可能危及粮食安全。以往的实地研究将火山灰对农作物的影响与沉积厚度或相应的质量负荷联系起来。然而,包括植物性状和生长阶段在内的非火山因素也会影响农作物受火山灰影响的程度。为了准确估计火山灰易发地区农作物产量损失的风险,必须评估这些因素如何影响火山灰对农作物的影响。我们在温室中种植了叶菜类(莴苣,Lactuca sativa;hative d'Heverlée;卷心菜,Brassica oleracea;cabus de Chateaurenard)和球根类(洋葱,Allium cepa;blanc premier;胡萝卜,Daucus carota;hative d'Oxhella)蔬菜,并在两个生长阶段将它们暴露在 5 至 40 kg m-2 的模拟火山灰沉积中。我们的研究结果证实,作物产量损失会随着灰烬质量负荷的增加而增加,当灰烬沉积量为 20-40 kg m-2 时,产量损失达到 27%-69%。此外,这些结果还表明,胡萝卜和洋葱植物比以前报道的更容易受到影响。与洋葱和胡萝卜植物相比,生菜和卷心菜植物受灰烬的影响更为严重,这说明了植物特性在控制灰烬截留和叶片保留方面的作用。此外,植物的生长阶段也是另一个易受影响的因素。利用新的影响数据,我们计算了可能受到落灰影响的种植区的理论产量损失。结果显示,作物产量损失的很大一部分可能与低灰分质量负荷(5 千克 m-2)有关,这强调了将远端地区纳入落灰对作物影响评估的重要性。
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来源期刊
Agrosystems, Geosciences & Environment
Agrosystems, Geosciences & Environment Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
2.60
自引率
0.00%
发文量
80
审稿时长
24 weeks
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