The NEN draft standards for biostimulants do not guarantee the products are effective Biostimulantia Dr. ir. Aad Termorshuizena, prof. dr. Ken Gillerb, prof. dr. ir. Martin van Ittersumb, ir. Romke Postmac, ir. Brent Riechelmanc,… Posted on 26 October 2023by Aad Termorshuizen
Effecten van bemesting op ziekten en plagen Soil-borne pathogens, Plant pathogens, Bemesting In opdracht van BO-Akkerbouw deed ik samen met Romke Postma (NMI) en Arjan Mager (HLB) literatuuronderzoek naar de relatie tussen… Posted on 18 October 2021by Aad Termorshuizen
Soil quality, Soil-borne pathogens Klik hier voor de pdf van het artikel in Bodem. Posted on 17 October 2021by Aad Termorshuizen
Reststoffen voor de akkerbouw: zo eenvoudig nog niet Biostimulantia, Soil quality, Compost, Humic acids, Plant pathogens In opdracht van BO-Akkerbouw heb ik samen met Romke Postma (Nutriënten Management Instituut) een deskstudie gedaan naar hoe je reststoffen… Posted on 10 March 2021by Aad Termorshuizen
Beheersing bodempathogenen Soil quality, Soil-borne pathogens BO-Akkerbouw gaf opdracht om op een rij te zetten welke beheersingsmethoden er allemaal zijn tegen bodempathogenen. Dit rapport, geschreven met… Posted on 3 February 2020by Aad Termorshuizen
Overview biostimulants Biostimulantia Last week I provided the Ducth Interbranche Organisation Arable Crops with the latest developments on biostimulants. You can download my… Posted on 6 January 2020by Aad Termorshuizen
Plastics in agriculture Soil quality Remarkable: plastics, even bio-degradable forms of it, affect plant growth. Qi et al. (2018) reported that plastics added to soil… Posted on 27 June 2019by Aad Termorshuizen
Presentation Fungi in Gardens Plant pathogens November 2018 at a general meeting of the Royal Dutch Plant Pathological Society, I gave a presentation on plant pathogenic… Posted on 23 November 2018by Aad Termorshuizen
Wat shall we do with mycorrhiza in agriculture and horticulture? Biostimulantia, Soil quality, mycorrhiza There is no doubt that mycorrhizal fungi are advantageous to many plants. For example, they provide nutrients (especially P, but… Posted on 16 October 2018by Aad Termorshuizen
Ambities van minister Schouten leiden tot risico’s bij bodempathogenen Soil quality, Soil-borne pathogens LNV-minister Carola Schouten wil inzetten op kringlooplandbouw (zie bv. hier). De ambities zijn stevig, met een streven naar nul emissie… Posted on 2 October 2018by Aad Termorshuizen
Making inventories of plant diseases and pests Plant pathogens Today, we barely know about the presence and abundance of pests and diseases agriculture. Farmers and contractors have insufficient time… Posted on 28 August 2018by Aad Termorshuizen
Is biochar a soil improver? Biostimulantia, Soil quality Research on the agronomic application of biochar was inspired on the high quality of the so-called “terra preta”-soils from the… Posted on 10 July 2018by Aad Termorshuizen
Presentation on plant biostimulants Biostimulantia On May 24 2018, I gave a presentation on plant biostimulants at a meeting of the Royal Dutch Plant Pathological… Posted on 24 May 2018by Aad Termorshuizen
Implementation of biostimulants and soil improvers in EU regulation Biological control, Biostimulantia Short summary: The procedure that will be followed to check the claimed effects of biostimulants is essential for the credibility… Posted on 17 January 2018by Aad Termorshuizen
Thielaviopsis basicola has been split up in Berkeleyomyces basicola en B. rouxiae Soil-borne pathogens Thielaviopsis basicola is a worldwide occurring soil-borne pathogen causing root rot in many dicot crops. In the Netherlands it is… Posted on 5 January 2018by Aad Termorshuizen
Managing Verticillium-wilt using organic residues Biostimulantia, Soil-borne pathogens, Compost Verticillium dahliae incites wilt in a wide variety of crops, ranging from strawberries and potatoes to olive and cotton. Because… Posted on 4 January 2018by Aad Termorshuizen
Biostimulants, biocontrol agents and the Fertilising Products Regulation Biological control, Biostimulantia Plant biostimulants are substances that strengthen the plant. At the recent biostimulants congress in Miami, the definition of biostimulants as… Posted on 19 December 2017by Aad Termorshuizen
Review on potential biocontrol agents against Verticillium dahliae Biological control, Soil-borne pathogens Verticillium dahliae causes wilt in a very great number of crops including potatoes, cotton and several ornamental trees. Although a… Posted on 13 December 2017by Aad Termorshuizen
What to do against soil-borne pathogens? Soil-borne pathogens In many crops soil-borne pathogens accumulate, especially if a susceptible crop is grown in a too narrow rotation. Soil-borne pathogens… Posted on 6 December 2017by Aad Termorshuizen
Humic acids tested in a 3-yr pot experiment Biostimulantia, Humic acids Humic acids are increasingly popular as soil conditioner. While many short-duration experiments have been done (see my earlier item), Ciarkowska… Posted on 22 November 2017by Aad Termorshuizen
Armillaria in gardens in England Soil-borne pathogens Armillaria causes root rot in many tree species. Although most attention in scientific research is paid to forestry, considerable damage… Posted on 7 November 2017by Aad Termorshuizen
Praktijkexperiment met humuszuren en vrijlevende N-bindende bacteriën in suikerriet Biostimulantia, Humic acids, Free-living N-binding bacteria Quite some conclusions on the effects of humic acids / humic substances and free-living N-binding bacteria are based on short… Posted on 7 November 2017by Aad Termorshuizen
Meta-review on humic acids Biostimulantia, Humic acids Humic acids are popular as biostimulant. On the effects of humic substances, Rose & al. published in 2014 a meta-review…. Posted on 7 November 2017by Aad Termorshuizen
Compost hygienisation Compost I made a small study on the regulation of compost hygienisation. There is a lot of literature on this topic,… Posted on 20 October 2017by Aad Termorshuizen
Biocontrol of Powdery Scab (Spongospora subterranea) Biological control, Soil-borne pathogens In a field experiment, Aspergillus versicolor lm6-50 could reduce the development of powdery scab (Spongospora subterranea) on newly formed tubers…. Posted on 4 October 2017by Aad Termorshuizen
Compost application reduced replant disease in fruit trees better than chemical disinfestation Compost, Replant disease Replant disease of fruit trees can be caused by various soilborne pathogens including root lesion nematode (Pratylenchus penetrans). Although the… Posted on 4 October 2017by Aad Termorshuizen
Biological control of Fusarium oxysporum in vanilla Biological control In a 1-year experiment in a naturally infested soil with Fusarium oxysporum f. sp. vanillae, Trichoderma guizhouense NJAU 472 and… Posted on 4 October 2017by Aad Termorshuizen
Effects of EM/Bokashi evaluated Biostimulantia In 2008 the department of Biological Farming Systems of Wageningen University studied the effects of EM (“effective microorganisms”; see here… Posted on 3 October 2017by Aad Termorshuizen
Dutch Regulation Exception Pesticides abolished Pesticides The Dutch Regulation Exception Pesticides (REP; in Dutch Regeling Uitzondering Bestrijdingsmiddelen) regulates the allowance of pesticides with a low risk… Posted on 3 October 2017by Aad Termorshuizen
