A case study of soil nematode populations under intensive cucumber monoculture in Hungary.

IF 1.1 4区 生物学 Q4 PARASITOLOGY Helminthologia Pub Date : 2024-12-12 eCollection Date: 2024-09-01 DOI:10.2478/helm-2024-0026
R Petrikovszki, A Gódor, P I Nagy, D Selmeczi, B Simon, F Tóth
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Abstract

A 25-year-old intensive monoculture of cucumber (Cucumis sativus 'Monolit F1') has been chosen for monitoring the effect of continuous fertilization, drip irrigation and various soil disinfection on free-living nematodes in soil. Densities, relative abundance of nematode genera, trophic groups and c-p classes, in addition, numerous nematological indices were determined besides certain soil properties. Concerning the nematological indices, all the values proved a stressed, depleted and unstable environment with degraded food web condition. The exaggerated application of fertilizers through irrigation caused high salinity values (0.62 %) which is much higher than the indicated toxicity threshold (0.4 %) for cultivated plants. The number of individuals of the bacterivore Acrobeloides and Cuticularia genera, which have a very high stress tolerance, was outstanding in the area. Besides juveniles, the appearance of Meloidogyne incognita males was also recorded which could lead to a change in the genetic composition of the population to adapt to environmental stressors. All these changes may result from salt stress indicated by intensive drip irrigation and the use of artificial fertilizers.

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匈牙利黄瓜单一集约化种植下的土壤线虫种群案例研究。
为监测连续施肥、滴灌和各种土壤消毒对土壤中游离线虫的影响,选择了 25 年的黄瓜(Cucumis sativus 'Monolit F1')集约化单一种植。除了某些土壤特性外,还测定了线虫属、营养群和 c-p 级的密度、相对丰度以及许多线虫学指数。在线虫指数方面,所有数值都证明了环境的压力、枯竭和不稳定,以及食物网条件的退化。通过灌溉大量施用化肥导致盐度值过高(0.62%),远远高于栽培植物的毒性阈值(0.4%)。在该地区,抗逆性极强的菌类 Acrobeloides 和 Cuticularia 属的个体数量非常突出。除了幼虫外,还记录到出现了黑僵菌(Meloidogyne incognita)雄虫,这可能会导致种群的基因组成发生变化,以适应环境胁迫。所有这些变化都可能是密集滴灌和使用人工肥料造成的盐胁迫所致。
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来源期刊
Helminthologia
Helminthologia 生物-动物学
CiteScore
1.80
自引率
0.00%
发文量
21
审稿时长
>12 weeks
期刊介绍: Helminthologia (HELMIN), published continuously since 1959, is the only journal in Europe that encompasses the individual and collaborative efforts of scientists working on a different topics of human, veterinary and plant helminthology. The journal responsibility is to enrich the theoretical and practical knowledge in very specific areas and thus contribute to the advancements in human and veterinary medicine and agronomy. Taking the advantage of comprehensive and multidisciplinary approaches journal still maintains its original spirit and is principal source of fresh scientific information regarding helminths, endoparasites and plant parasites. Addressing the most up-to date topics journal gained rightful and exceptional place next to the other high-quality scientific journals publishing in its field.
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