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Aad Termorshuizen

Aad Termorshuizen
Aad Termorshuizen Consultancy

PhD

About

219
Publications
40,216
Reads
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4,990
Citations
Additional affiliations
July 2017 - present
Aad Termorshuizen Consultancy
Position
  • Consultant
Description
  • topic: Advising farmers, their advisors and scientists on soil-borne plant pathogens and soil quality.
July 2013 - July 2017
SoilCares Research
SoilCares Research
Position
  • Researcher
Description
  • topic: Developing on-site soil analysis techniques using spectroscopy. Advise on general agronomic aspects and on soil quality and soil health.
March 2007 - June 2013
BLGG/Eurofins
Position
  • Researcher
Description
  • topic: Soil quality, soilborne pathogens, statistical analyses, evaluation of work flow at soil analysis lab
Education
August 1978 - March 1989
Wageningen University & Research
Field of study
  • Plant Pathology

Publications

Publications (219)
Article
Full-text available
Een goede bodem is belangrijk. Een waarheid als een koe en tegelijkertijd een dooddoener. Want wat is dan een goede bodem? In gespreken met experts, praktijk specialisten en gebruikers blijkt een goede bodem te bestaan uit verschillende onderdelen. Dat leidt soms tot spraakverwarring en maakt inzicht krijgen complex.
Article
With the projected rise in the global human population, agriculture intensification and land-use conversion to arable fields is anticipated to meet the food and bio-energy demand to sustain a growing population. Moving towards a circular economy, agricultural intensification results in the increased re-investment of bio-based residues in agricultur...
Research
Full-text available
In this project two inventories by means of extensive literature searches following the methodology described in the EFSA guidance on systematic review have been executed: Inventory 1 of all types of soil and growing media (if relevant components thereof) to be elaborated considering (i) the soil and growing medium imported as commodities (i.e. not...
Article
In this project two inventories by means of extensive literature searches have been executed: Inventory 1 of all types of soil and growing media (if relevant components thereof) to be elaborated considering (i) the soil and growing medium imported as commodities (i.e. not in association with plants intended for planting), (ii) the soil and growing...
Article
Intensification of agriculture to meet the global food, feed, and bioenergy demand entail increasing re-investment of carbon compounds (residues) into agro-systems to prevent decline of soil quality and fertility. However, agricultural intensification decreases soil methane uptake, reducing and even causing the loss of the methane sink function. In...
Article
Inoculum of a pathogen is its biomass available for infection. Inoculum density (ID), usually expressed per unit of volume or (dry) weight of soil, is the common measure to evaluate the effect of soil disinfestation. Interpretation of ID of a given pathogen depends on the sampling and detection procedures. For example, soil drying and sieving selec...
Article
Full-text available
Anaerobic soil disinfestation (ASD) for the control of multiple soilborne pathogens is a viable alternative to the application of biocides and soil steaming. ASD implies soil wetting, incorporation of fresh organic matter, and covering with airtight plastic foil for several weeks. To speed up the whole process, Thatchtec has developed a procedure b...
Article
Full-text available
Anaerobic soil disinfestation (ASD) has potential to reduce soilborne plant pathogens as a sustainable alternative for chemical or energy-demanding steam treatments. It involves adding a labile carbon source, irrigating the soil to stimulate decomposition of organic material and then covering the soil with air-tight plastic to limit gas exchange. D...
Chapter
Root pathogens affecting root systems of living plants are represented by a taxonomically wide array of organisms, including viruses, protozoa, chromists, fungi, nematodes, and plants. A number of root pathogens function also as vectors of viruses. In addition to the well-known, widely spread species from agriculture, probably many are still hidden...
Article
It is reasonable to expect that compliance with grassland fertilization recommendations in the long run results in optimal soil fertility, and subsequent herbage quality. Here, we evaluate the development of soil, herbage and manure characteristics and their relation over the last decades. We hypothesized that herbage and manure quality are related...
Article
Full-text available
Soil phosphorus (P) tests are used for P fertilization recommendations, environmental evaluations, and occasionally for legislation purposes. The basis of fertilization recommendation as function of soil P status was established in the 1950s–1960s. Since then the agroeconomic environment has altered: Environmental protection became increasingly imp...
Article
Full-text available
In recent years, anaerobic soil disinfestation (ASD) has been proposed as an alternative control method of soil-borne plant pathogens. It involves adding a labile carbon source, irrigating the soil to stimulate decomposition of organic material and then covering the soil with air-tight plastic to limit gas exchange. During the ASD process, soil mic...
Article
Full-text available
Many Nigerian farmers depend for their seed on seed-producing farmers, the so-called informal Seed System (SS), but seed quality of the SS is unknown. Farmers planting low quality seed risk poor field emergence and low plant vigour as a result of low physiological quality or infection with seed-borne pathogens. The objective of this research was to...
Conference Paper
Full-text available
The first aim of the Task 10.1 is the investigation of soil microbiome associated with a rotation based management system. A wheat based rotation provides the experimental platform where soil and winter wheat, grown under different management systems (including crop rotation, tillage and fertilization), are sampled twice in the winter wheat croppin...
Article
Full-text available
Aboveground and belowground herbivore species modify plant defense responses differently. Simultaneous attack can lead to non-additive effects on primary and secondary metabolite composition in roots and shoots. We previously found that aphid (Brevicoryne brassicae) population growth on Brassica oleracea was reduced on plants that were infested wit...
Article
Most smallholder farmers in developing countries depend on an informal Seed System (SS) for their seed. The informal SS is often criticized because farmer-produced seed samples are not tested for seed health, thus accepting the risk of planting infected seeds. Here we aimed at assessing the quality of seeds acquired from the informal SS, and compar...
Article
In opdracht van Productschap Akkerbouw is door het Louis Bolk Instituut, BLGG AgroXpertus, Alterra en HLB een applicatie ontwikkeld die snel en eenvoudig per teeltrotatie de OS-balans en stikstofmineralisatie in beeld brengt.
Article
Full-text available
Stikstoflevering vanuit organische stof (OS) wordt belangrijker naarmate de bemestingsnormen strakker worden. Dit project kent drie fasen met de volgende doelen. Fase I: de bestaande kennis over organische stof en stikstofmineralisatie te ontsluiten voor zowel telers als voorlichters, Fase II: een functioneel ontwerp van een adviesmodule op te leve...
Article
Full-text available
Er is reeds veel informatie beschikbaar over het onderwerp ‘organische stof in de bodem’ In dt rapport is een deel van die informatie nog eens samengevat in de vorm van 10 vragen en antwoorden. Wat is organische stof? Welke rol speelt organische stof in de bodem? Welke rol speelt organische stof in de bodemvruchtbaarheid? Welke rol speelt organisch...
Article
Full-text available
In een meerjarig onderzoek gefinancierd door het Productschap Tuinbouw en het Ministerie van Economische zaken in het kader van het programma Kas als Energiebron, hebben Wageningen UR Glastuinbouw en BLGG gekeken naar ‘Bodemresetten met Herbie’ als alternatief voor stomen. Gebleken is dat een hoge bodemtemperatuur het proces stimuleert. Zonder anae...
Article
Full-text available
Organische stof in de bodem staat sterk in de belangstelling. Organische stof is essentieel voor de levering van nutriënten en voor de bodemstructuur en daarmee ook voor de o.a. vochthuishouding en de bewerkbaarheid. Er heerst een vrij brede bezorgdheid dat het gehalte en de kwaliteit van organische stof in de bodem achteruit gaat. Uitgebreide anal...
Article
Full-text available
Organische stof speelt een hoofdrol in de vruchtbaarheid van de bodem. In opdracht van Productschap Akkerbouw is door het Louis Bolk Instituut, BLGG AgroXpertus, Alterra en HLB een applicatie ontwikkeld die snel en eenvoudig per teeltrotatie de organische stofbalans en stikstofmineralisatie in beeld brengt. In dit rapport wordt de opzet en de gebru...
Article
Full-text available
Door middel van tien vragen en antwoorden is het belang van organische stof voor de bodemvruchtbaarheid beschreven. Wat is organische stof? Welke rol speelt organische stof in de bodem? Welke rol speelt organische stof in de bodemvruchtbaarheid? Welke rol speelt organische stof bij ziektewering? Wat is een organische stof balans van de bodem? Wat i...
Article
Full-text available
In the light of ongoing land use changes, it is important to understand how multitrophic communities perform at different land use intensities. The paradox of enrichment predicts that fertilization leads to destabilization and extinction of predator-prey systems. We tested this prediction for a land use intensity gradient from natural to highly fer...
Article
Among Dutch Scots pine habitats, the mycota fruiting in 5-15-yr-old, spontaneously developed stands is the most outstanding. In these young stands, the mycota is dominated, at least above ground, almost exclusively by mycorrhizal species. About 15-20 years later, however, their mycological value collapses. The quantity of fruitbodies may be similar...
Article
Ondanks vele jaren onderzoek staat het benutten van de bodembiodiversiteit in de landbouw nog in de kinderschoenen.
Article
Full-text available
Verticillium wilt can cause high losses in tree nurseries. To be able to predict disease and unravel disease dynamics over time and space, the relationship between verticillium wilt and soil inoculum densities of Verticillium dahliae and the nematode Pratylenchus fallax was studied in two 4-year field experiments with Acer platanoides and Catalpa b...
Article
Crop yield has to increase to meet the expanding demand for food, feed and bio-energy, caused by world population growth and increasing wealth. Raising sugar yield is also the key to sustaining the profitability of the sugar beet crop. This paper describes the factors that impacted on yield differences between 26 ‘top’ and 26 ‘average’ growers base...
Article
In most soils, fungal propagules are restricted to a certain extent in their ability to grow or germinate. This phenomenon, known as soil fungistasis, has received considerable attention for more than five decades, mostly due to its association with the general suppression of soil-borne fungal diseases. Here, we review major breakthroughs in unders...
Article
The use of organic soil amendments, such as green manures, animal manures, composts or slurries, certainly has many advantageous aspects for soil quality and is suggested as a promising tool for the management of plant-parasitic nematodes. However, during a recent literature survey we also found numerous studies reporting an increase of plant-paras...
Article
Full-text available
The use of flowering field margins is often proposed as a method to support biological control in agro-ecosystems. In addition to beneficial insects, many herbivores depend on floral food as well. The indiscriminate use of flowering species in field margins can therefore lead to higher pest numbers. Based on results from field observations and labo...
Article
The Netherlands has a high cumulative mean phosphorus (P) balance. In the 20th century, cumulative mean P surpluses were ca. 4500 kg P2O5/ha. The annual surpluses have levelled off because of manure application limits from 1984 onwards. We report the effect of soil type, land use, and manure policy on changes in soil P of fields in the Netherlands...
Article
The influence of aerobic and anaerobic conditions on the survival of the enteropathogens Escherichia coli O157:H7 and Salmonella serovar Typhimurium was investigated in microcosms with broth, cattle manure or slurry. These substrates were inoculated with a green fluorescent protein transformed strain of the enteropathogens at 10(7) cells g(-1) dry...
Chapter
Full-text available
Soilborne pathogens are difficult to manage, especially since the use of methyl bromide has been phased out in most countries. Resistance against many soilborne pathogens is hardly available and fungicides are effective only to a limited extent. In organic agriculture, many problems related to soilborne pathogens are avoided by applying wide rotati...
Article
Macrophomina phaseolina is a destructive pathogen causing charcoal rot of cowpea and other crops in the semi-arid areas of the Sahel (north-west Africa). Chemical management is not feasible in conditions of subsistence farming, and the plurivorous nature of the fungus limits the effectiveness of some cultural methods. This study aimed at identifyin...
Article
Ecology Letters (2010) 13: 292–301 Rare species are assumed to have little impact on community interactions and ecosystem processes. However, very few studies have actually attempted to quantify the role of rare species in ecosystems. Here we compare effects of soil community assemblages on plant-herbivore interactions and show that reduction of ra...
Conference Paper
Full-text available
In many EU countries, agricultural land has been heavily manured and/or fertilised in past decades. Many of these lands now have high soil phosphorus (P) status and are characterised as high risk areas for phosphorus (P) leaching. Here we report on regional and temporal changes in the soil P status of grassland in the Netherlands, using a database...
Article
Organische stof is essentieel voor de chemische, fysische en biologische bodemkwaliteit in de akkerbouw. Een goed bodembeheer dient o.a. gericht te zijn op het handhaven en/of verbeteren van het gehalte en de kwaliteit van de organische stof in de bodem en op het handhaven en/of verbeteren van de verschillende bodemfuncties. Een handvat voor het be...
Article
Full-text available
Potato brown rot disease (Ralstonia solanacearum) is a serious economic problem in Egypt, partly due to an European Union requirement that potatoes for export to the EU should be grown in so-called pest free area's (PFA's), where fields are tested and infested fields are put under quarantine measures. To investigate pathogen survival and to determi...
Article
Growing empirical evidence suggests that aboveground and belowground multitrophic communities interact. However, investigations that comprehensively explore the impacts of above- and belowground third and higher trophic level organisms on plant and herbivore performance are thus far lacking. We tested the hypotheses that above- and belowground high...
Article
Predictability of compost-induced suppression of soil-borne plant diseases is poor. Part of the variability in disease suppression could be due to the heterogeneity of a given compost. Therefore, the disease suppressive properties of different wet-sieved fractions of two composts against three soil-borne plant pathogens were studied. The ability of...
Article
Two hypotheses which might explain a recent increase in the incidence of verticillium wilt of chrysanthemums in glasshouses in the Netherlands were investigated, viz whether selection for increased resistance to elevated temperatures has occurred due to frequent steaming of soils in the glasshouses, or whether the strains of Verticillium dahliae oc...
Article
The purpose of classifying pathogens based on ecological traits is that certain generalizations can be made beyond the specific or “model” pathogen that has been investigated. Usually this is done at the taxonomic level of species, but infraspecific variation in ecological traits frustrates such classifications. Moreover, shifts in traits can take...
Article
Several generations of soil microbiologists and plant pathologists have attempted to unravel the microbial composition, population dynamics and various life-sustaining processes in the soil. However, until recently, this basic resource for plant growth and nutrient recycling has to a large extent remained a black box. Studies have been made of the...
Article
The objective of this study is to describe survival of Escherichia coli O157:H7 populations in manure-amended soils in terms of population stability, i.e. the temporal variation around the decline curve, in relation to soil characteristics indicative of soil health. Cow manure inoculated with E. coli O157:H7 was mixed with 18 pairs of organically a...
Article
Integrated pest management (IPM) has been introduced in India to reduce the serious impact of the use of highly toxic pesticides on people’s health and the environment. However, IPM diffusion has been slow, in part because of the inherent complexity of the approach based on decisions requiring knowledge of ecological principles and local ecological...
Article
The recent increase in foodborne disease associated with the consumption of fresh vegetables stresses the importance of the development of intervention strategies that minimize the risk of preharvest contamination. To identify risk factors for Escherichia coli O157:H7 persistence in soil, we studied the survival of a Shiga-toxin-deficient mutant in...
Article
Full-text available
Macrophomina phaseolina, the causal agent of charcoal rot, causes great damage to cowpea in the Sahel. One of the few options to manage the disease is by cropping nonhosts that may reduce the soil inoculum below a damage threshold level. To test this, fonio (Digitaria exilis) and millet (Pennisetum glaucum) were cropped continuously for 3 years in...
Article
In a field experiment on an abandoned asparagus field we studied the effect of Biological Soil Disinfestation (BSD) on survival of buried inoculum samples of three test pathogens (Fusarium redolens f.sp. asparagi (FRA), Rhizoctonia tuliparum (RT) and Verticillium dahliae (VD)) and on the Fusarium infestation level. The BSD treatments involved incor...
Article
There are several fine and recent overviews of fungal and fungus-like pathogens of potato. In addition, several monographic assays of the major pathogens are available and referred in this chapter. Here, the author intends to provide a concise overview of these pathogens including the correct names, names used as synonyms, major references and a sh...
Article
Armillaria lutea rhizomorphs in soil were mapped over areas of 25 m2 at a Pinus nigra (site I) and a Picea abies (site II) plantation. Rhizomorph density was 4.3 and 6.1 m m(-2) soil surface with 84% and 48% of the total rhizomorph length in the mapped area interconnected in a network at site I and site II, respectively. At site I there were only t...
Article
Twelve commercially produced Dutch green waste composts were evaluated for their suitability to replace 20% (v/v) peat substrate in the cultivation of ornamentals. Salt concentrations were determined in water extracts of the composts and disease suppressive effects were assessed against various soilborne diseases. The Cl-concentration of the compos...
Article
Compost can have a disease suppressive effect, but compost research is constrained by the fact that repetition of experiments with a similar batch of compost is impossible, since storage affects the organic material including the microbial communities. The objective of this study was to test the hypothesis that differential changes in microbial com...
Article
Abstract The abiotic conditions required for eradication of Polymyxa betae, the vector of Beet necrotic yellow vein virus in sugar beet, were investigated. Survival of resting spores of P. betae was determined under aerobic (30 min, 4 days and 21 days) and anaerobic (4 days) conditions under several temperature regimes in a water suspension and in...
Article
Full-text available
The effects of soil solarization combined or not with millet residues or paunch contents amendments, on the survival ofMacrophomina phaseolina (Tassi) Goid. and development of charcoal rot of cowpea (Vigna unguiculata), were assessed in a naturally infested soil. Solarization increased the soil temperature to 50°C for at least 4 h per day during Ju...
Article
The geographical distribution of the annulate Armillaria species was studied in The Netherlands during the period 1983–1992. Armillaria gallica (incl. A. cepistipes), A. mellea and A. ostoyae appear to be widespread, the first two species being rather common on broad-leaved hosts growing on clay and loess soils, and the third species common on both...
Article
The effects of ammonium sulphate and sodium nitrate on Pinus sylvestris seedlings inoculated with Paxillus involutus and Suillus bovinus were investigated. Weekly fertilization (26 weeks) positively affected the plant dry weight, but inhibited the mycorrhizal formation and decreased the root length/weight ratio. Ammonium treatments affected the see...
Article
Full-text available
The effects of four average temperatures (7, 16, 23 and 33°C) and daily oscillations with three amplitudes (0, ±4, ±7°C) on the survival of the enteropathogens Escherichia coli O157:H7 and Salmonella serovar Typhimurium were investigated in small microcosms. Manure was inoculated with a green fluorescent protein transformed strain of either pathoge...
Article
Full-text available
Manure samples were collected from 16 organic (ORG) and 9 low-input conventional (LIC) Dutch dairy farms during August and September 2004 to determine the prevalence of the STEC virulence genes stx1 (encoding Shiga toxin 1), stx2 (encoding Shiga toxin 2), and eaeA (encoding intimin), as well as the rfbE gene, which is specific for Escherichia coli...
Article
Full-text available
The potential of Biological Soil Disinfestation (BSD) to control potato brown rot, caused by Ralstonia solanacearum race 3 biovar 2, was investigated. BSD involves the induction of anaerobic soil conditions by increasing microbial respiration through incorporation of fresh organic amendments (here: grass or potato haulms) and by reducing re-supply...
Article
The primary objective of this study was to determine the possibility of internalization of GFP-expressing Escherichia coli O157:H7 and Salmonella enterica serovar Typhimurium (S. Typhimurium) strains MAE 110 (multi-cellular morphology) and 119 (wild type morphology) into lettuce seedlings (Lactuca sativa cv. Tamburo) grown in an inoculated hydropon...
Article
Full-text available
Ralstonia solanacearum race 3 biovar 2, the causative agent of potato brown rot (bacterial wilt), is an economically important disease in tropical, subtropical and temperate regions of the world. In view of previous reports on suppression of the disease by organic amendments, and the expansion of organic agriculture, it was timely to compare the ef...
Article
The abiotic conditions required for eradication of Polymyxa betae, the vector of Beet necrotic yellow vein virus in sugar beet, were investigated. Survival of resting spores of P. betae was determined under aerobic (30 min, 4 days and 21 days) and anaerobic (4 days) conditions under several temperature regimes in a water suspension and in leachate...