To receive full-fledged harvest of onions, it is necessary to secure it at all stages of cultivation against diseases and wreckers. Therefore we will consider some advice which will help to warn the most widespread diseases of onions.
Instruction
1. From numerous onions diseases most often this grassy plant is struck by onions fly, zhurchalka, medvedka and peronosporoz. Wrecking process by onions fly, zhurchalky is that the insect, getting to onions, eats it, for this reason the plant decays. Adult insects begin to fly since the end of May - the beginning of June. At this time they settle down about onions head, leaving own eggs. The hatched larvae take root into onions and ruin plant. Striking one bulb, under sight 5-6 more pieces get, further larvae pupate in the soil, and again attack will repeat in month.
2. Warn infection with this disease by means of kreopinovy emulsion, mix it with sawdust which closes up to the soil. For disposal of onions of wreckers use ashes, pouring on bed, tobacco dust, lime slaked lime. Cultivate the land, and sometimes and pilferers, salt solution: on 1 glass of salt it is necessary to take 10 liters of water. Other option of processing such: it is necessary to take infusion of roots of dandelions of 200 grams and to fill in it with 10 liters of water. In this means it is necessary to process pilferers.
3. Against emergence on kitchen garden medvedka use branches of long-term chrysanthemum, dig in them around seedling. Reliable tool is the shell of eggs, it is pressed, then trench in in poles.
4. Tripsa and stem nematode - these wreckers also often ruin onions harvest. Striking plant, these insects exhaust its juice at the basis of feathers, yellowing of leaves as a result begins with upper parts. To avoid with them meeting, gardeners keep onions of pilferers before landing in water of 45-48 degrees, or place for two days in salty solution.
5. One more disease of onions — peronosporoz (race mealy). It has the explosive nature of distribution. Degree of scale of this disease depends on weather patterns. The favorable environment for it — humidity and cool. The infected plants need to be destroyed. The resolved fungicides can become lifesavers. From house means can help the solution prepared from 30 grams of soda ash, 10 liters of water and small amount of soap.
6. Important condition for healthy harvest of onions - crop rotation, i.e. you should not plant plant on the same place, it is better to take break for 2-3 years. It is important to dig over the soil before landing to depth of 25-30 centimeters. Many wreckers of onions do not transfer smell of mint, tomatoes, valerian, needles.