conditions, like searching ability and pest control, have been improved among
others. Changes in parameters related to rearing productions, as well as decreases in
prices have also brought about improvements. A good example is the formulation
of sachets that can multiply and release populations of predatory mites in excess of
that indicated in the label.
Insect and mites rearing is not only a technical application but a true research
field to settle at a front place (Cohen 2001). Development of cost-effective rearing
Fig. 4.4 Adults of Orius
laevigatus depredating eggs
of Lepidoptera
Fig. 4.5 Adult of the
omnivorous (zoophytophagous) N. tenuis
Fig. 4.6 Adult of the
predatory mite A. swirskii
feeding on whitefly nymph,
Bemisia tabaci
4 Biosystems Engineering Applied to Greenhouse Pest Control
111
others. Changes in parameters related to rearing productions, as well as decreases in
prices have also brought about improvements. A good example is the formulation
of sachets that can multiply and release populations of predatory mites in excess of
that indicated in the label.
Insect and mites rearing is not only a technical application but a true research
field to settle at a front place (Cohen 2001). Development of cost-effective rearing
Fig. 4.4 Adults of Orius
laevigatus depredating eggs
of Lepidoptera
Fig. 4.5 Adult of the
omnivorous (zoophytophagous) N. tenuis
Fig. 4.6 Adult of the
predatory mite A. swirskii
feeding on whitefly nymph,
Bemisia tabaci
4 Biosystems Engineering Applied to Greenhouse Pest Control
111