Distribution patterns and sampling.

Been, T.H.; Schomaker, C.H.

doi:10.1079/9781845930561.0302

Cited by 21 publications

(23 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, ectoparasite nematodes (e.g. Helicotylenchus) deposit their eggs individually, resulting in a random distribution pattern (BENN; SCHOMAKER, 2006). Thus, that is the reason why the ectoparasite nematodes presented greater spatial variability than the sedentary endoparasite nematodes.…”

Section: Resultsmentioning

confidence: 99%

Relationship between soil organic matter and nematodes in sugarcane fields

Barros¹,

Pedrosa²,

Cardoso³

et al. 2017

SCA

View full text Add to dashboard Cite

Sugarcane plays an important socio-economic role in northeastern Brazil. However, the low yield in this region is associated with several factors (e.g. frequent occurrence of plant-parasitic nematodes). In order to observe the influence of soil organic matter on the nematodes, this study aimed to characterize the spatial nematode distribution in a sugarcane field. The study was carried out in Goiana -Pernambuco State (Brazil), fifty days after sugarcane cutting (10 days after vinasse application). The sampling scheme consisted of a regular 60 × 50-m grid, 10 m spaced, through 0 to 0.2 m depth. Spatial distribution was evaluated by semivariograms fit and performed by ordinary kriging interpolation for mapping. Exponential and spherical models promoted the best fit to semivariograms, resulting in ranges from 16 to 19 m. There was a strong negative correlation between soil organic matter and plantparasitic nematode population density. Free-living nematodes had a similar distribution pattern as soil organic matter content. These results indicated that soil organic matter had important effects on spatial distribution of both plant-parasitic and free-living nematodes. Key words: Soil microfauna. Semivariogram. Spatial variability. Vinasse. ResumoA cana-de-açúcar desempenha importante papel socioeconômico para o Nordeste Brasileiro. Por outro lado, a baixa produtividade nesta região está associada a diversos fatores, dentre estes, a relevante presença de nematoides fitoparasitas. A fim de verificar a influência da matéria orgânica sobre os nematoides, o objetivo deste estudo foi caracterizar a distribuição espacial da matéria orgânica e da nematofauna em área cultivada com cana-de-açúcar fertirrigada com vinhaça. O estudo foi realizado no município de Goiana, Zona da Mata Norte de Pernambuco, 50 dias após corte da cana (10 dias após aplicação da vinhaça). Utilizou-se um sistema de amostragem em malha regular de 60 × 50 m, com espaçamento de 10 m, na profundidade de 0-0,2 m. A distribuição espacial foi avaliada por meio de ajustes de semivariogramas e realizada interpolação por krigagem ordinária para mapeamento. O modelo esférico e o exponencial proporcionaram melhor ajuste aos semivariogramas, com alcances de 16 a 19 m. A matéria orgânica correlacionou-se negativamente com a população dos nematoides fitoparasitas. O mapeamento permitiu observar padrões de distribuição espacial similares entre as comunidades de nematoides de vida livre e a matéria orgânica. Esses resultados indicam que a matéria orgânica tem um papel importante na distribuição espacial dos nematoides fitoparasitas e de vida livre. Palavras-chave: Microfauna do solo. Semivariograma. Variabilidade espacial. Vinhaça.

show abstract

Section: Resultsmentioning

confidence: 99%

Relationship between soil organic matter and nematodes in sugarcane fields

Barros¹,

Pedrosa²,

Cardoso³

et al. 2017

SCA

View full text Add to dashboard Cite

show abstract

“…So far, most research on spatial distribution of nematodes concentrated on mesoscale distribution; in arable fields focusing on individual plant-parasites (Been & Schomaker 2006;Duncan & Phillips 2009;McSorley & Parrado 1982;Seinhorst 1982), and in natural areas on trophic group level Simmons et al 2008). Information about the microscale distribution of nematode taxa is scarce, and almost fully restricted to obligate plant parasites (Rossi et al 1996, Been & Schomaker 2006 in agricultural systems.…”

Section: Introductionmentioning

confidence: 99%

“…Information about the microscale distribution of nematode taxa is scarce, and almost fully restricted to obligate plant parasites (Rossi et al 1996, Been & Schomaker 2006 in agricultural systems. Microscale distribution of nonplant parasitic nematodes at family level and lower, received even less attention.…”

Section: Introductionmentioning

confidence: 99%

“…Most papers focus on nematode feeding types Freckman, 1995, Viketoft, 2013), on restricted number taxa within a feeding type , Ettema et al, 2000, or on individual plant-parasitic nematode species (Been and Schomaker, 2006). Geostatistical modelling is a potential powerful approach to reveal spatial patterns in soil .…”

Section: Introductionmentioning

confidence: 99%

“…We expect higher degrees of patchiness in natural fields with high plant diversity as compared to the arable fields, reflecting differences in plant diversity and management practices. Further, based on studies on the distributions of oligophagous parasites of higher plants (Been & Schomaker 2006;McSorley & Parrado 1982), we hypothesized that more cores per composite sample would result into a reduction of the degree of variation between replicate composite samples. We examined how the variation in microscale patchiness was related to the trophic ecology of the taxa under investigation.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impact of trophic ecologies on the whereabouts of nematodes in soil

Quist¹

View full text Add to dashboard Cite

Combining novel monitoring tools and precision application technologies for integrated high‐tech crop protection in the future (a discussion document)

Zijlstra¹,

Lund

Justesen

et al. 2011

Pest Management Science

View full text Add to dashboard Cite

The possibility of combining novel monitoring techniques and precision spraying for crop protection in the future is discussed. A generic model for an innovative crop protection system has been used as a framework. This system will be able to monitor the entire cropping system and identify the presence of relevant pests, diseases and weeds online, and will be location specific. The system will offer prevention, monitoring, interpretation and action which will be performed in a continuous way. The monitoring is divided into several parts. Planting material, seeds and soil should be monitored for prevention purposes before the growing period to avoid, for example, the introduction of disease into the field and to ensure optimal growth conditions. Data from previous growing seasons, such as the location of weeds and previous diseases, should also be included. During the growing season, the crop will be monitored at a macroscale level until a location that needs special attention is identified. If relevant, this area will be monitored more intensively at a microscale level. A decision engine will analyse the data and offer advice on how to control the detected diseases, pests and weeds, using precision spray techniques or alternative measures. The goal is to provide tools that are able to produce high-quality products with the minimal use of conventional plant protection products. This review describes the technologies that can be used or that need further development in order to achieve this goal.

show abstract

Distribution patterns and sampling.

Cited by 21 publications

References 0 publications

Relationship between soil organic matter and nematodes in sugarcane fields

Relationship between soil organic matter and nematodes in sugarcane fields

Impact of trophic ecologies on the whereabouts of nematodes in soil

Combining novel monitoring tools and precision application technologies for integrated high‐tech crop protection in the future (a discussion document)

Contact Info

Product

Resources

About