developed with an odd number of chromosomes (33) and do not produce (or rarely produce) viable pollen and eggs in the resulting seedlings. Because of…
generation of aphids in the spring. In greenhouses, sexual reproduction is very rare and only triggered if lighting signals a shortening day. Damage…
the upper and lower surface of leaves, preferentially in depressions, and rarely on stems or petioles. There are four larval instars. The body tapers…
taking the venom gland with it. How to prevent bumblebee stings? Bumblebees rarely sting. The chance of being stung by a bumblebee can be reduced by…
against mealybugs Ready to go: we deliver fit, energetic larvae, which are raring to go. The larvae have a voracious appetite, the consequences of…
system is pneumatic and is controlled by a timer or the climate computer. On a rare occasion, when air pressure drops, the system is opened…
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