Effects of long-term crop management on nematode trophic levels other than plant feeders disappear after 1 year of disruptive soil management

Berkelmans, Ray; Ferris, H.; Tenuta, Mario; Bruggen, A.H.C. van

doi:10.1016/s0929-1393(03)00047-7

Cited by 176 publications

(87 citation statements)

References 29 publications

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“…Bacterivores increase when organic matter in the form of compost is applied (Briar et al, 2011;Zhao and Neher, 2013) or during intensive irrigation (Ferris et al 2004). In our study, the EI ranged from moderate to high, but the SI was always low -this was in agreement with several studies on tomato or vegetable production systems (Berkelmans et al, 2003;Briar et al, 2011;Bulluck et al, 2002;Ferris et al, 2004;Ugarte et al, 2013). The EI increases with soil disturbance (Liu et al, 2012) as soil microbes access organic matter exposed by tillage.…”

Section: Ncp and Land Use Changesupporting

confidence: 92%

“…For example, biological nitrogen supply cannot be inferred from FLN numbers when a plant is present in the soil (Carrascosa et al, 2014;Gebremikael et al, 2014). Although there was evidence of enrichment, as visualized by the enrichment and the faunal profiles, the selective amplification of economically important PPNs was not detected by the community-level indices (also noted by Berkelmans et al, 2003). The decline in the PPI observed in our data (Table 3) would create the impression among tomato producers that their "nature-friendly" production system was effective in reducing the PPN threat because herbivores numbers usually increase in tomato production systems over time (Bulluck et al, 2002;Gebremikael et al, 2014).…”

Section: Ncp In Perspectivementioning

confidence: 99%

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Nematode community profiling as a soil biology monitoring tool in support of sustainable tomato production: A case study from South Africa

Malherbe

Marais

2015

Applied Soil Ecology

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Management of the biological component of agricultural soils is a vital aspect of sustainable food production systems. There is a need for soil biology metrics that producers can use as a decision support tool when it comes to managing the soil biological component of agricultural soils. We evaluated the usefulness of nematode community profiling as a soil biology monitoring tool in support of a sustainable commercial-scale tomato production system in South Africa. The objectives were to: 1) study the effects of land use change on nematode communities in the tomato production region, and 2) explore the correlation between tomato crop productivity and the nematode community metrics. The enrichment index was a sensitive indicator of land use change, but the structure index was not. Although the number and proportion of free-living and plant-parasitic nematodes increased and decreased respectively, the selective amplification of specific herbivorous genera was observed.Helicotylenchus spp. was sensitive to land use change and might serve as soil health indicator in this tomato production region. Regression analysis indicated a combination of variables associated with soil pH, free-living nematodes (notably the bacterivores) and specific plant-parasitic nematode genera (Paratrichodorus spp. and Rotylenchus spp.) predictedtomato yield (R 2 = 0.846). Despite the useful information gleaned from the nematode community metrics regarding soil food web functioning, the importance of ecologically and economically important nematode genera was re-emphasized. The results of this study highlight an important principle regarding development of soil health metrics for tomato agroecosystems: tomato crop health was not necessarily predicted solely by indicators of soil food web health and functioning.

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Section: Ncp and Land Use Changesupporting

confidence: 92%

Section: Ncp In Perspectivementioning

confidence: 99%

Nematode community profiling as a soil biology monitoring tool in support of sustainable tomato production: A case study from South Africa

Malherbe

Marais

2015

Applied Soil Ecology

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“…This conclusion was also supported by the results of (O+P)/(B+F+RFF+PP), which also indicate a poor health ecosystem (Wasilewska, 1997). BI values were relatively low in comparison with results of Berkelmans et al (2003) from fields grown with annual crops, at where the high BI values indicated poor ecosystem health. The BI values for localities B4 and M2 (10.45 and 10.59 respectively) are comparable with results of Háněl (2008) for localities on colliery spoils grown with broad leaves trees with grass understorey, which suggest shift from nutrient disturbance to balanced use of nutrient resources by higher plants (Bongers et al, 1997).…”

Section: Discussioncontrasting

confidence: 56%

“…Nematodes were assembled to trophic groups (Table 1) according to their feeding habits as outlined by Yeates et al (1993), and Tylenchidae were classified as root fungal feeders. Nematode Channel Ratio (NCR) and Basal Index (BI) were calculated according to Yeates (2003) and Berkelmans et al (2003) respectively. The Shanon index (H´gen) based on natural logaritm was calculated from nematode genera (Shannon-Weaver, 1949).…”

Section: Methodsmentioning

confidence: 99%

Composition and vertical distribution of free living and plant parasitic nematodes in hop gardens in the Czech Republic

et al. 2011

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Composition and vertical distribution of soil nematode communities within soil profile were investigated in eight hop gardens in Czech Republic. In total, the presence of 78 nematode genera was confirmed. Genus Drilocephalobus (Coomans & Coomans, 1990) is new for fauna of the Czech Republic. The highest abundance of soil nematodes was found at a depth of 0–10 cm and declined with increasing depth of soil profile. The most dominant genus was Bitylenchus, followed by genera Acrobeloides, Ditylenchus, Chiloplacus and Cervidelus. Ten genera of plant parasitic nematodes were recorded: Bitylenchus (with prevalence of B. dubius), Helicotylenchus, Heterodera (with absolute prevalence of H. humuli), Geocenamus, Longidorella, Longidorus (only L. elongatus), Merlinius (with prevalence of M. brevidens), Paratylenchus and Pratylenchus. Low population densities of predators and omnivores, low values of the community indices (MI, ΣMI, SI, and CI), and high values of NCR, EI, and PPI/MI ratio indicated disturbed nematode communities in hop gardens and bacteria-dominated decomposition pathways in the soil food web.

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“…Omnivorous and predatory nematodes are sensitive to disturbance and stress (Bongers & Bongers, 1998;Ferris et al, 2001). No signifi cant differences were observed on the SI values between the two ecosystems, due to the similar practical management, with low SI values in the repeated tillage and other disturbed arable agroecosystems Berkelmans et al, 2003;Ferris & Matute, 2003). In addition, the action of replant peach tree caused some interference with the food web, but the disturbed effects began to get released in 2008; whereas the disturbed condition of the CPPO food web kept getting worse through the three years.…”

Section: Discussionmentioning

confidence: 99%

Different changes of soil nematode communities in replant and continuous-planting peach orchards and their indicative value for peach replant problem

Liu

Wang

et al. 2015

Helminthologia

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SummaryLong-term changes of soil nematode diversity and distribution patterns in replant peach orchard (RPO) and continuous-planting peach orchard (CPPO) were assessed to evaluate different effects on nematode community and function by RPO and CPPO, in relation to peach replant problem from the point of soil fauna. Observations were conducted on a silt loam soil, and soil sampling was performed four times through the growing season of peach trees in the period from 2006 to 2008 in Pinggu, Beijing. The result showed that RPO differed from CPPO by its higher abundance of plant feeding nematodes but lower abundance of bacterivore nematodes, as well as signifi cantly higher values of plant parasite index but lower nematode biodiversity. Obviously, the absolute abundance of Paratylenchus in RPO was higher than that in CPPO, which could be a key factor for the peach replant problems from the part of soil nematode. Nematode function indices and weighted nematode fauna profi le analysis were no signifi cantly different in the two peach ecosystems, but they represented an indication of high disturbance, N-enriched, bacterial decomposition pathway.

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Effects of long-term crop management on nematode trophic levels other than plant feeders disappear after 1 year of disruptive soil management

Cited by 176 publications

References 29 publications

Nematode community profiling as a soil biology monitoring tool in support of sustainable tomato production: A case study from South Africa

Nematode community profiling as a soil biology monitoring tool in support of sustainable tomato production: A case study from South Africa

Composition and vertical distribution of free living and plant parasitic nematodes in hop gardens in the Czech Republic

Different changes of soil nematode communities in replant and continuous-planting peach orchards and their indicative value for peach replant problem

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