Algemeen

Effects of clothianidin-treated seed on the arthropod community in a mid-Atlantic no-till corn agroecosystem

We assessed the community-level effects of clothianidin-treated seed on the diversity and abundance of arthropod communities in a no-till corn agroecosystem over a single growing season.Epigeal and foliage-dwelling communities were disturbed by the clothianidin seed treatment, with significant negative and positive changes in taxa abundances. Clothianidin reduced the abundance of minute pirate bugs by 66.2%, lady beetles by 44.7%, ants by 43.4%, ground beetle adults and larvae by 31.7%, and rove beetles by 44.1% during the early corn growth stages.

More than 90% of soil on Swiss organic farms is contaminated with neonicotinoids

Researchers at the University of Neuchâtel measured the concentrations of five neonicotinoid insecticides in 702 soil and plant samples from 169 cultivated fields and 62 Ecological Focus Areas (EFA) across Switzerland’s lowland areas – EFA are areas set aside to improve the environment or climate. Organic farms, EFAs and organic seeds are supposed to be free of these pesticides. However, traces of least one of the five neonicotinoids were found in 93% of organic soils and crops and in more than 80% of EFA soils and plants.

A survey and risk assessment of neonicotinoids in water, soil and sediments of Belize

Usage of neonicotinoids is common in all agricultural regions of the world but data on environmental contamination in tropical regions is scarce. We conducted a survey of five neonicotinoids in soil, water and sediment samples along gradients from crops fields to protected lowland tropical forest, mangroves and wetlands in northern Belize, a region of high biodiversity value. Neonicotinoid frequency of detection and concentrations were highest in soil (68%) and lowest in water (12%). Imidacloprid was the most common residue reaching a maximum of 17.1 ng/g in soil samples.

Pesticides discovered in 83% of examined European soils

Today, 2,000 pesticides with 500 chemical substances are being used in Europe. However, data on how such substances affect soil quality is incomplete and fragmented, and fails to clearly reflect their overall impact on soil systems and human health. First-time research conducted in the course of two EU-funded projects, iSQAPER and RECARE, is shedding light on the state of European soils. The results are far from reassuring.

Truths about pesticides

Chemical agriculture is destroying the ecosystems that sustain all life. Pesticides are a key culprit in the decline of bees, butterflies and other pollinators — leading some scientists to warn of a “second silent spring.” , Pesticides wreak havoc on the soil by killing the organisms that are the basis of soil life. And they pollute rivers, lakes and oceans, leading to fish die-offs.

Oorzaken van de achteruitgang van natuur en landschap in Noordoost Twente

N.a.v. de gemeenteraadsverkiezingen van 21 maart 2018 informeerde de werkgroep Behoud Twents Landschap de Twentse bevolking over de stand van zaken van natuur en landschap in Noordoost Twente. Hieronder een aantal feiten en constateringen:

1. Hoogleraar Siepel: ‘Twentse bodemfauna zo dood als een pier’

De bodemfauna op het platteland in Twente is nagenoeg verdwenen. Dat zegt Henk Siepel, hoogleraar dierecologie aan de Radboud Universiteit. “Het ziet er groen uit, maar het is zo dood als een pier.”

2. Onze insecten sterven massaal.

Bespuitingen op akkers laten sporen na in de bodem

In meer dan 80 procent van de Europese landbouwbodems worden één of meerdere gewasbeschermingsmiddelen aangetroffen. Dat blijkt uit een onderzoek van Wageningen Universiteit, dat gepubliceerd is in het wetenschappelijk magazine Science of the Total Environment. De wetenschappers onderzochten de aanwezigheid van 76 actieve chemische stoffen in de bodems van landbouwpercelen in elf Europese landen. Zoals je kan verwachten, worden er van de middelen die boeren spuiten op hun percelen sporen teruggevonden in de bodem.

Effects of acetamiprid and thiacloprid in their commercial formulations on soil fauna

Neonicotinoids are the most prominent group of insecticides in the world and are commercialized in over 120 countries for the control of agricultural pests mainly due to their broad-spectrum activity and versatility in application. Though non-target soil organisms are likely to be exposed during application, there is paucity of information in scientific literature regarding their sensitivity to neonicotinoids.

Onze landbouwgrond is zo dood als een pier

Het zijn niet alleen insecten en vogels boven de grond die last hebben van bestrijdingsmiddelen. In de bodem waar planten en gewassen groeien, werkt het gif net zo goed. Je hoort weinig over het bodemleven dat zich daar afspeelt. Maar het is essentieel. Miljoenen bacteriën, schimmels en allerlei andere bodemdiertjes, van aaltjes tot regenwormen, zorgen ervoor dat planten voedingsstoffen kunnen opnemen, dat er genoeg lucht in de bodem zit om gewassen te kunnen verbouwen en dat er voldoende gangetjes zijn waardoor de regen kan wegstromen.