onion pest and disease management

Onion Pest and disease management

Initiate foliar sprays of pesticide from 30 days after transplanting or as soon as pest/disease appears in the field.
Spray at 10-15 days interval depending upon the intensity of pest/disease.
Always add spreader @ 0.5-1.0% to spray solution.

What are the pest of onions?

There are several important pests that attack onions and garlic, like nematodes, stem and bulb eelworm, thirps and onion fly or maggot. Onions are also very prone to foliar diseases and bulb rots, such as slimy or 'sour' outer scales, a bacterial disease that significantly reduces onion bulb quality.

Why onion can kill insects?

The sulfur compounds in the onion and garlic keep bugs away by simply producing an odor that pesky garden pests do not like. Garlic and onions can be mixed with water in a spray bottle and then applied to plants or they can be used alone.

What is pest and disease management?

Growers want to control pests and diseases to get maximum production and prevent crop loss. Prevention of pests and diseases before any damage is done is most desirable. Four common methods of control of pests and diseases are biological, cultural, chemical, and integrated control.

What are the methods of controlling pests and diseases?

Now, let's see how these pest control methods are used.

Physical methods of pest control. This is one of the natural methods of pest control; it is a non-chemical pest control method. ...
Chemical methods of pest control. ...
Cultural methods of pest control. ...
Biological methods of pest control.

What is onion made of?

The bulbs are composed of shortened, compressed, underground stems surrounded by fleshy modified scale (leaves) that envelop a central bud at the tip of the stem. In the autumn (or in spring, in the case of overwintering onions), the foliage dies down and the outer layers of the bulb become dry and brittle.

What is the stem of an onion called?

Onion plants produce a leafless flowering stem which exhibits scape. These have 2-4 leaves that are circular and hollow in cross-section, easily flattened when young. Whereas Torus is the thickened part of the stem from which flower grows. The older name of the torus is thalamus.

Do onions keep bugs away?

Onions repel ants, aphids, flea beetles, carrot flies and mosquitoes. Garlic is a powerful and natural insect repellent that repels many flying and crawling insects like mosquitoes, onion flies, Japanese beetles, grubs, black flies, weevils, aphids and red spider mites.

What do onions repel?

Onions (allium cepa)

Onions repel aphids, carrot rust flies, and flea beetles.

Do onions keep roaches away?

5. Garlic, pepper and onion: Another thing which cockroaches hate is the smell of pepper, and also the pungent smell of garlic and onion. So, what you can do is boil some water and pour in it one tablespoon pepper, 1 onion, and few garlic cloves.

What is the pest management?

Integrated pest management (IPM) combines the use of biological, cultural and chemical practices to control insect pests in agricultural production.It seeks to use natural predators or parasites to control pests, using selective pesticides for backup only when pests are unable to be controlled by natural means.

Why pest and disease management is important?

Crop protection is the science and practice of managing pests, plant diseases and other pest organisms that damage agricultural crops. Pesticides help farmers to reduce crop damage from pests and increase food production. They're very important as they improve the quality and yield of agricultural produce.

Is strategy of pest and disease management in organic farming?

Pest/disease control strategies in organic farming systems are mainly preventative rather than curative. ... Damaging populations of pests and pathogens are less likely to establish in soils that sustain high levels of beneficial organisms.

What are 3 methods of pest control?

Modern Pest Control Methods

Biological Pest Control. Biological pest control is the most natural method known today. ...
Mechanical Pest Control. Mechanical pest control method includes the use of equipment as well as devices to get the job done. ...
Poisoned Bait. ...
Field Burning. ...
Trap Cropping. ...
Pesticides.

What is the best pest control method?

6 Other methods of pest control

Clean up after meals. ...
Put all rubbish into the bin.
Wrap all food scraps tightly in paper before putting them in the bin.
Keep all the benches, cupboards and floors clean and free of food scraps.
Regularly clean behind stoves, refrigerators and other household appliances.
Keep food in containers with tight-fitting lids.

What is the most common method of pest control?

The most common method of pest control is the use of pesticides—chemicals that either kill pests or inhibit their development. Pesticides are often classified according to the pest they are intended to control.

Is it good to eat onions everyday?

Onions contain antioxidants and compounds that fight inflammation, decrease triglycerides and reduce cholesterol levels — all of which may lower heart disease risk. Their potent anti-inflammatory properties may also help reduce high blood pressure and protect against blood clots.

Why onions make us cry?

Onions produce the chemical irritant known as syn-Propanethial-S-oxide. It stimulates the eyes' lachrymal glands so they release tears. ... Lachrymatory-factor synthase is released into the air when we cut an onion. The synthase enzyme converts the amino acids sulfoxides of the onion into sulfenic acid.

Does onion induce sleep?

How? Onions are rich in L-tryptophan, a form of amino acid that acts as a natural sedative. It also helps in reducing stress levels which also aids a good sleep. It lowers down the level of sugar in your blood which results in a reduction of activity in the human body.

Can you eat the stems of onions?

If you find an onion with the long greens still attached (mostly in spring), don't throw those greens away! They have a lovely mild onion flavor and you can use them just as you would use a scallion. Chop them up and mix them with Neufchâtel cream cheese to spread on a cracker or add them to fresh salsa.

Is onion stem or root?

Onion is neither a root nor a stem. It is a tunicate bulb having a cluster of fleshy leaves. An onion is a modified underground stem structure. The onion plant stores its processed food in the bulged leaf structure at the base.

Is Carrot an underground stem?

Potato – An underground stem called a tuber. 2. Carrot – A modified tap root. ... Turmeric- An underground stem known as 'rhizome'.