10x25 cm; 20x25 cm White: 10x25 cm; 25x40 cm Green: 10x25 cm; 25x40 cm Numbers per package 10x25 cm: 10 pieces 20x25 cm: 22 pieces 25x40 cm: 12 pieces
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it a bit," notes Koen. With the growing availability of knowledge and the number of biological crop protection products, he also sees opportunities for
little direct damage to plants, they are often a problem due to their large number. Larvae of flies of the family Keroplatidae (mainly Lyprauta sp.) can cause
pupae, nematodes and other soil living pests, which can be found in high numbers in greenhouses in soil which has been enriched with compost. As natural
sometimes found in cucumber crops. In many ornamental crops, even very low numbers of thrips can cause damage by transmitting viruses, or by reducing aesthetic
not only results in quality fruit with longer shelf life, but also in the number of productive weeks and, therefore, in the profitability of the business
population can cause severe damage, whereas roses appear to tolerate larger numbers. Life cycle and appearance of Southern European marshland pyralid Adults
the larvae of leaf miners . When the bug is present in a crop in large numbers, it can contribute substantially to the control of these pests. Although
different ‘formae speciales’ which are each selectively pathogenic on a limited number of crops. Even within one crop, different 'formae speciales' may occur and