Influences of organic and synthetic soil fertility amendments on nematode trophic groups and community dynamics under tomatoes

Bulluck, L. R.; Barker, K. R.; Ristaino, Jean Beagle

doi:10.1016/s0929-1393(02)00089-6

Cited by 133 publications

(79 citation statements)

References 22 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%

“…The consistent use of tillage, synthetic fertilizers and pesticides probably contributed to the declining SI and increasing EI. Consequently, the SI was not a sensitive indicator of land use change in the studied tomato production context, but similar findings were reported previously ( Figure 1; Briar et al, 2011;Bulluck et al, 2002). The faunal and enrichment profiles distinguished between land use changes and were sensitive to crop management effects associated with nutrient enrichment.…”

Section: Ncp and Land Use Changesupporting

confidence: 85%

“…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). However, the increase in Paratrichodorus spp.…”

Section: Ncp In Perspectivementioning

confidence: 53%

“…The combination of species of Criconemella, Helicotylenchus, Meloidogyne, Paratrichodorus, Pratylenchus, and Rotylenchus observed in our dataset are common to South African soils (Barbercheck and Von Broembsen, 1986;Marais and Swart, 2002). These nematodes were also described frequently in tomato production systems elsewhere in the world (Anwar et al, 2013;Briar et al, 2011;Bulluck et al, 2002;Cadet and Thioulouse, 1998;Ferris et al, 2004;Johnson and Campbell, 1980;. Several of these genera are known to form galls or gall-like symptoms on tomato roots (i.e., "stubby root"), an aspect that easily confound inexpert disease identification by producers and may lead to selection of cultivars with inappropriate disease resistance packages.…”

Section: Ncp and Tomato Yieldmentioning

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 and Land Use Changesupporting

confidence: 85%

Section: Ncp In Perspectivementioning

confidence: 53%

Section: Ncp and Tomato Yieldmentioning

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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“…Some studies indicated that nematode abundance and diversity were influenced by application of organic and inorganic fertilizers (Forge et al, 2005;Wang et al, 2006;Okada & Harada, 2007;Liang et al, 2008). Bulluck et al (2002) and Forge et al (2005) reported that populations of bacterivorous nematodes, mainly Rhabditidae and Cephalobidae, and fungivorous nematodes were greater in soils amended with manure than that in soils amended with chemical fertilizer. In some field experiments, Wang et al (2006) and Okada and Harada (2007) observed that total nematode number and bacterivorous, fungivorous and omnivorous nematodes increased in conventional tillage system with chemical and organic fertilization of the plots in comparison to non amended plots.…”

Section: Introductionmentioning

confidence: 99%

Abundance and diversity of soil nematodes as influenced by different types of organic manure

2010

Helminthologia

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58 SummaryNematode abundance and diversity from different types of organic manure soil treatments were investigated in a longterm field experiment carried out in Qu-Zhou experimental station, China Agricultural University. The composts used in the experiment were a traditional compost (C) (60 % straw, 30 % livestock dung, 5 % cottonseed-pressed trash and 5 % brans), traditional compost and chicken dung compost (60 % straw, 30 % chiken dung, 5 % cottonseedpressed trash and 5 % brans) added with effective microorganisms, EMC and EMCDC respectively. Six treatments were arranged according to a randomized block design with three replicates per treatment. Treatments were incorporation into the soil of compost EMC, EMCDC, and C each at the rates of 7.5 and 15 t/ha. Plots were sown with winter wheat (Triticum aestivum L.) and summer maize (Zea mays L.) every year from 1997 to 2004. Overall, 28 nematode genera were found. Seven genera were bacterivores, 3 genera were fungivores, 13 genera were plantparasites and 5 genera were omnivores-predators. The Rhabditis, Cephalobus, Helicotylenchus were dominant genera in the present study. The bacterivores and plantparasitic nematodes were the dominant trophic groups except in C treatment. Nematode abundance per 100 g dried soil ranged from 372 to 553. Addition of effective microorganism increased the number and proportion of bacterivorous nematodes and decreased the number and proportion of plant-parasitic nematodes compared to traditional compost C. Total number of nematode was significantly influenced by compost amount, but didn't significantly influence by EM agent. Total abundance of nematode was positively correlated with the content of soil organic matter, total N, available P and K. The long-term addition of EM agent hasn't adverse effect on soil nematode community.

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Long‐term fertilization and cultivation impacts on nematode abundance and community structure in tall fescue turfgrass

Waldo,

Shahoveisi,

Carroll

2024

Ecology and Evolution

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Impacts of long‐term fertilization and cultivation were evaluated on nematode communities associated with tall fescue turfgrass following 11 years of treatment applications. Fertilizer treatments of biosolid, synthetic, and plant‐based fertilizers and cultivation treatments of 0×, 1×, and 2× aerification passes were applied to randomized and replicated tall fescue plots at the University of Maryland Paint Branch Turfgrass facility in College Park, Maryland. Free‐living and plant‐parasitic nematodes were identified, enumerated, and categorized into functional groups. Nematode count data were compared using generalized linear mixed modeling with negative binomial distribution and two‐way ANOVA was used to compare nematode ecological indices. Biosolid treatments resulted in lower omnivore‐predator densities than plant‐based fertilizer treatments (p ≤ .001) and significantly greater Hoplolaimus densities than plant‐based fertilizer plots (p ≤ .05). Synthetic fertilizer applications resulted in the greatest Eucephalobus (p ≤ .05) and total bacterivore densities (p ≤ .001) of all fertilizer treatments. Plant‐based fertilizer‐treated plots had the largest Maturity Index cp 2‐5 and Structure Index (p ≤ .05). Cultivation of 1× resulted in fewer total bacterivore densities than 2× (p ≤ .01) while omnivore‐predator densities were greater in 1× than 0× (p ≤ .001). Plant health, as measured by NDVI, was lowest in biosolid‐treated turfgrass (p ≤ .05). These findings suggest that long‐term turfgrass management practices can have variable impacts on nematode abundance and community structure in tall fescue and provide insights into ecological impacts of turfgrass management practices.

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Influences of organic and synthetic soil fertility amendments on nematode trophic groups and community dynamics under tomatoes

Cited by 133 publications

References 22 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

Abundance and diversity of soil nematodes as influenced by different types of organic manure

Long‐term fertilization and cultivation impacts on nematode abundance and community structure in tall fescue turfgrass

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