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// // // Pest monitoring in greenhouse

Pest monitoring in greenhouse

Pest monitoring in greenhouse

One of the main components of the techniques for successful and effective integrated protection in the greenhouse is professional and high-quality monitoring. Effective integrated protection of plants in the greenhouse begins with a quality pest monitoring. Monitoring is an examination of plants to determine the state of the crop and the presence of pests in it by specialists.

Competent monitoring does not take much time, it is carried out systematically and provides an objective assessment of the pest pressure and its control. Monitoring should be carried out throughout the growing period of crops. It is recommended to carry it out during one or two weeks. Since the spider mite is the most common pest in the greenhouse, its monitoring is often combined with the detecting of other pests. Also, during the pest monitoring, specialists detect the presence or number of beneficials, which allows one to draw conclusions about the relationship of phytophagous and predator.

The main objectives of monitoring are the following:

  • To detect the start of pest population development in time
  • To detect the species composition and location of their thresholds in the greenhouse
  • To provide with the data about the dynamics of pest population development.


While monitoring the pests that are able to fly, it is very important to use monitoring traps. These traps are additional and essential source of information about the greenhouse state. They use visual and olfactory stimuli to attract pests. As an olfactory stimulus, traps are used on lures for females (moths, thrips), which attract males. To catch whiteflies, it is preferable to use yellow glue traps, while blue traps attract thrips better.

The location of traps in the greenhouse and the relatively grown crop is of big importance. When detecting thrips and whiteflies, the traps are placed at a height of 10-15 cm above the crop. To detect and catch cucumber gnats, traps are placed at a height of 40 cm from the substrate. Monitoring traps can reduce the impact of the human factor on the results and reduce the time for detecting the pest.

Depending on the objectives, this or that type of monitoring can be applied. Types of monitoring differ in the number of sectors (sections) of the house where sampling takes place. A sector is an area on one or two paired rows between two, three or more stands in a greenhouse. A house is the space between the lineal rows of stands. The house always includes several rows of plants, called a house.

In-depth monitoring is the most time-consuming and long-lasting. During this type of monitoring samples are taken on each row between two stands. The detailed monitoring sector is the gap between two stands on one row. This type of monitoring is usually carried out before the introduction of IPM or for the formation of the most accurate representation of the studied area state.

For getting more rapid data, detailed monitoring is used, in which the sector makes up the gap between the three racks in two paired rows.

Simplified monitoring differs from the detailed one because its sector consists of gaps between five or six racks in two paired rows.

Express monitoring is the most rapid determination of the area condition and obtaining approximate information. During the rapid monitoring, 5-10 samples are taken from the study plot, which are used to make conclusions about the situation throughout the plot. Samples can be selected in one row, but at a distance of not less than 2 meters from each other.

If necessary, our specialists carry out instruction on introduction of beneficials and monitoring of greenhouses where our IPM products are used.