Inspection method for spray rate controllers in Flanders (Belgium)

In Belgium, the inspection of sprayers is performed by official and mobile teams ruled by two inspection authorities. The management of the inspection is done by the Federal Ministry for Consumer Protection, Public Health and the Environment (FAVV). In the Flemish region the inspection is delegated to the Institute for Agricultural and Fisheries Research (ILVO). In Belgium, the mandatory inspection of sprayers was started up in 1996 and the 6th inspection cycle (2011-2012-2013) is currently running. In the past decade the number of sprayers equipped with a spray rate controller, increased significantly. In the first inspection cycle (1996-1997-1998), only 4.58% of the sprayers were equipped with a spray rate controller in Flanders. In the fifth inspection cycle (2008-2009-2010), this percentage increased significantly to 20.37%.As the original inspection method for spray rate controllers showed some lacks and was time consuming, ILVO developed a simple and reliable method for testing rate controllers used on field and orchard sprayers

An overview of the defects on tested field sprayers in Belgium

contribution to session 5 Member States shall establish certificate systems for mutual recognition of the certificates (according article 8/6

An overview of the defects on tested orchard sprayers in Belgium

In Belgium, the inspection of sprayers is performed by official and mobile teams ruled by two regional inspection authorities, ILVO and CRA-W. The management of the inspection is done by the Federal Ministry for Consumer Protection, Public Health and the Environment (FAVV). Inspection authorities need to have an ISO 17020 certification, consequently the Belgian inspection is completely independent and objective. FAVV delegates the inspection to one inspection service per region (one for the Walloon part and one for the Flemish part). In this way inspection results are centralized and easily consultable. The inspection results are a very useful tool to have an overview of the general condition of the Belgian sprayers. Those results can be helpful when advising on changes in legislation. They can also be used as an instrument to advise fruit growers and farmers how to improve their spraying machines, r what points they have to pay attention to when buying a new or second-hand machine. Therefore, a detailed overview is made of the inspection results on orchard sprayers for the 5th inspection cyclus (3 years: 2008-2009-2010)

An overview of the compulsory inspection of sprayers in Belgium

Poste

Experimental study of factors influencing the risk of drift from field sprayers Part 2: Spray application technique.

Recently, spray drift and its effects have become an important aspect of risk assessment in the registration process of pesticides in Belgium. In this regulation, drift reducing spray application techniques can be used to reduce buffer zones. The purpose of this research is to measure and compare the amount of drift sediment for different spray application techniques under field conditions. A drift prediction equation for the reference spraying was used to compare other spraying techniques with the reference spraying, under different weather conditions. Drift measurements were performed for several combinations of nozzle type (flat fan, low-drift, air injection) and size (ISO 02, 03, 04 and 06), spray pressure (2, 3 and 4 bar), driving speed (4, 6, 8 and 10 km.h-1) and spray boom height (0.3, 0.5 and 0.75 m). Nozzle type as well as spray pressure, driving speed and spray boom height, have an important effect on the amount of spray drift. Larger nozzle sizes, lower spray pressures and driving speeds and lower spray boom heights generally reduce spray drift. Concerning nozzle types, air injection nozzles have the highest drift reduction potential followed by the low-drift nozzles and the standard flat fan nozzles

The inspection of soil-disinfection equipment in Belgium.

In Belgium, the mandatory inspection of field and orchard sprayers was already started up in 1995. At that time, there were only inspection protocols available for those two types of sprayers. From 2008 on, two new inspection protocols were developed: one for greenhouse sprayers and one for soil-disinfection machines. Those inspection protocols were added to the Belgian legislation and implemented since 2011. The inspection protocol for greenhouse sprayers was mainly based on the two existing protocols (field and orchard sprayers) as the working principle of those machines was similar.Soil disinfection machines used on Belgian territory needed another approach because of the differences in pressurising and application technique compared to classical spraying machines. Soil disinfection machines use a closed tank containing the vaporous disinfectant. The tank is pressurised by a compressor or a diving cylinder. As concerns the injector side of those machines there are different possibilities. Some are using a manifold with restrictor plates or a small tap per injector, others use narrow tubes towards the injectors, and sometimes nozzles are used. As one can see, there are no standard inspection methods available for those types of machines. Neither a standard spray pattern measurement, nor a separate pressure and nozzle testing is possible on most of those machines. On top there are some important safety aspects that need special attention due to the hazardous products used. The Belgian inspection protocol was almost completely developed in-house and makes it possible to inspect soil-disinfection machines in an accurate, safe and economical way

Wireless flow-sensor to inspect spray rate controllers

In Belgium, the mandatory inspection of sprayers was already started up in 1996 and the 8th inspection cycle (2017-2018-2019) is currently running. The inspection of sprayers is performed by official and mobile teams ruled by two inspection authorities and the management is done by the Federal Ministry for Consumer Protection, Public Health and the Environment (FAVV). In the Flemish region the inspection is delegated to the Institute for Agricultural and Fisheries Research (ILVO). In the past decade the number of field crop sprayers equipped with a spray rate controller increased significantly. In the first inspection cycle (1996-1998), only 4.58% of the field crop sprayers were equipped with a spray rate controller in Flanders. In the 7th inspection cycle (2014-2016), this percentage increased significantly to 26.92%. As the original inspection method for spray rate controllers showed some lacks and was time consuming, ILVO developed a simple and reliable method to test rate controllers on field crop and orchard sprayers.In Belgium, the mandatory inspection of sprayers was already started up in 1996 and the 8th inspection cycle (2017-2018-2019) is currently running. The inspection of sprayers is performed by official and mobile teams ruled by two inspection authorities and the management is done by the Federal Ministry for Consumer Protection, Public Health and the Environment (FAVV). In the Flemish region the inspection is delegated to the Institute for Agricultural and Fisheries Research (ILVO). In the past decade the number of field crop sprayers equipped with a spray rate controller increased significantly. In the first inspection cycle (1996-1998), only 4.58% of the field crop sprayers were equipped with a spray rate controller in Flanders. In the 7th inspection cycle (2014-2016), this percentage increased significantly to 26.92%. As the original inspection method for spray rate controllers showed some lacks and was time consuming, ILVO developed a simple and reliable method to test rate controllers on field crop and orchard sprayers

Challenges for CFD modeling of drift from air assisted orchard sprayers

Plant protection products (PPP) play an important role in providing high crop yields by minimizing risks associated with the occurrence of pests. Some of the sprayed material may however move beyond the intended target and results in drift to non-target objects. Modeling approaches help to understand, characterize and minimize spray drift using computer simulations rather than fiel