Posted by Paula Aberasturi on February 05, 2014
Our farm enjoys an eclectic mix of neighbors. A handful of ladies wearing red with black polka-dots; nosy busybodies buzzing around, burly enough that our farmers would sometimes stay out of our greenhouses for fear of their stings; chirpy visitors, some of them laying pretty blue eggs in our leaves-turned-nest; fairy-like creatures with golden eyes; and teeny-weeny ones, among the smallest in the world. The unique bunch do a lot of work for the farm: they rid us of aphids, mites, caterpillars, white flies and other nasty insects. Some say they are part of the farm’s Integrated Pest Management. Others like to call them Beneficial Insects. We would rather call them our FRIENDLY NEIGHBORS. We highlight three of the most fascinating ones here:
Lacewings, Commander in Chief
Another friendly neighbor is the Lace Wing. In an Insect-Eating Contest, lacewings would be adjudged the champions. In a battle, lacewings would definitely be commander. Lacewings are beautiful creatures with delicate netted wings and golden eyes. They look ethereal and you wonder where they get their voracious appetites. As larvae, they feed on aphids, whitefly, mealy bugs, thrips, spider mites and caterpillars. The lacewings can eat 200 or more pest eggs a week during their 2-3 week growth period! They are also our gutsy crusaders against the whitefly. White flies are small insects that cluster under our leaves and stems, and are especially bad for our roses. Not only these, lacewings feed on other insect pests such as mealy bugs (that cause black sooty mold on our plants), thrips (that make our leaves distorted or spreads diseases) and caterpillars too (otherwise we have chewed leaves.)
Recently moved in are the stingless wasps (Trichogramma). These are tiny insects of about 1 millimeter and they control at least 28 species of insect pests. These wasps are one of the smallest insects on the planet. We released 10,000 wasps and they are now roaming about our farm, parasitizing pest eggs. Our wasps are busy “sowing their seeds” into the harmful eggs of caterpillars and moth (the leafeaters,) among others. When the wasps hatch, the larvae will devour the pest egg contents. During their 9-11 day lives, the wasps will seek out and destroy about 50 pest eggs by laying their eggs into the pest eggs. I know it reads like a horror movie but these are naturally occurring in nature. A trivia about wasps: The adult females use their antennae to measure the size of the host egg in order to determine how many eggs to lay in it.
These are just some of the biological controls we use in the farm, as part of Integrated Pest Management. Biological controls eliminate the overuse of chemicals, increasing biodiversity. Our farm is blessed with ladybugs, lacewings, and most recently, are now the happy hosts of stingless wasps. Our friendly neighbors are beneficial insects who pay their rent by ridding our farms with pests while compensated with an abundance of good pests to eat.