Last June, I noticed that strange translucent strips began to appear on the feathers of onions.
I regularly removed such leaves, which as a result hit hard on turnip yields. Already in the fall, from a note in a gardening journal, I found out that my garden was attacked by a pest called an onion secretive hunter.
This tiny bug of dirty gray color with a trunk bent down – hence its scientific name was born – is capable of causing significant damage to the onion crop. In Russia, it is found mainly in the middle lane and Siberia.
First, winter-surviving beetles feed on onions, which fly out of shelters in April or May, during the flowering period of dandelion and felt cherry.
Insects gnaw out small holes along the edge of the feather and eat out the internal tissues in the leaves of the grown sampling, seed, last year’s old bulbs. Then they get to the emergence of chernushki. Whitish sores form on the leaves, because of which they quickly dry out.
Females also do masonry inside the feather. The yellow, curved C-shaped larvae that emerge from the eggs consume thin long strips that are clearly visible to the naked eye.
In one leaf, more than a dozen such larvae are found. As a result, the tops of onion feathers begin to turn yellow and dry out. Larvae continue the destructive activity until the end of June and then burrow into the soil for pupation.
In July, adult bugs are selected from the ground. They fly onion inflorescences and cause irreparable damage to the seeds.
After harvesting the crop from the garden, the onion crypto-hopper goes under the plant tops, into weed thickets or into the upper layer of soil (if it is quite loose).
Insecticides on onions cultivated on feather and turnip should not be used. Therefore, to combat the pest, they resort only to agricultural techniques aimed at reducing the population of bugs and larvae.
In early spring, as soon as the main snow melts, the place intended for the onion bed is cleared of all plant debris, especially from old bulbs forgotten in the soil. This is the main and most effective measure for regulating the number of pests.
If you find leaflets with characteristic translucent stripes on a bed with a bow, tear them off and burn them in the stove ( on the fire ). To stimulate the growth of fresh feathers, be sure to feed the plantings with nitrogen-containing fertilizer – for example, urea. After that, water the planting properly.
To exterminate beetle pupae hiding in the ground, all June you need to loosen the ground more often between rows of onions. Well, after digging the crop or in late autumn, dig the soil on the bed to a depth of one and a half to two bayonet shovels.
And do not forget about crop rotation – it will also help protect your onion plantings not only from the onion crypto-hunter but also from other crop pests.