Pests on cucumber and cabbage plants


Question: Pests on cucumber and cabbage plants

Hello, I noticed that in my garden the cabbage and cucumber leaves are initially pierced, until they disappeared by devouring. What animal is it? is there any natural remedy?

Thanks Sara


Answer: Pests on cucumber and cabbage plants

Hello Sara, welcome to our website! First of all, thank you for choosing our service dedicated to user questions "Questions and answers". In this column, the experts of the editorial staff of our website are always trying to find the solution to the problems of readers. You have encountered a serious problem with your horticultural crops: gnawing and the disappearance of the leaves. Damage like this is usually caused by three types of pathogens: snails, beetles or moths. In all three cases, a pathogen exploits the leaves of vegetables to feed, to our great disadvantage that if we do not treat the infested plants we run the risk of finding ourselves without a vegetable at the end of the ripening period. For problems like these, pesticides are needed, obviously specific to the type of parasite we have in our garden. We therefore recommend that you first carefully check the seedlings and understand which of the three pathogens is infesting your plant. Once you find out what parasite it is, go to a garden center and buy a specific pesticide and apply it in the manner and in the doses recommended on the product or by the retailer. Alternatively, you could also find a natural remedy, based on the principles of biological control: in practice, introduce an organism that feeds on the parasite that I want to eliminate to defeat the problem in a natural way. However, not knowing precisely whether they are snails, moths or beetles, we cannot give you more precise advice.




Cucumbers: Plants that grow well with cucumbers

Just as humans are social creatures and are attracted to each other for a variety of reasons, many garden crops benefit from growing together. Take cucumber, for example. Choosing cucumber companions will help the plant grow like human companionship. While some plants grow well with cucumbers, others can hinder their development. They can clutter the plant or absorb water, sunlight, and nutrients. It is therefore important to know the most appropriate companions for the cucumber.


What they are and how to recognize them

As we said, the illnesses that can affect plants caused by parasites are really many, some particularly fearful. In some cases, the fault lies with parasites, or some insects, but elsewhere all from a bad one care and crop maintenance or from climate.

Especially in the initial stages of the attack, it is not easy to unmask the nefarious action of aphids, powdery mildew, downy mildew, bedbugs and molds. Equally difficult is to track down the cochineal, i caterpillars that devour leaves and flowers, white fly, and so on. All these parasites can act undisturbed for a few days and reveal themselves when there is nothing more to do for our plants.

But watch out for some telltale signs. Whether it is flowering plants or from fruit grown in the vegetable garden, garden or balcony, on a more careful evaluation it will be possible to grasp the symptoms Most common. We just have to discover them. The presence of a parasite causes the weakening of the plant structure due to the loss of sap


Problems related to growing vegetables can range from the most obvious ones in vegetable gardens or plant diseases to problems related to the environment such as weather conditions, nutrition and even those caused by people or animals. Proper watering, fertilization, location, and when possible choosing to plant disease-resistant varieties can all help create your own little Eden.

Plant diseases

There are a myriad of plant diseases that can plague the vegetarian garden. These are just a handful that are commonly found in gardens.

Clubroot - Clubroot is caused by the pathogen Plasmodiophora brassicae . Vegetables affected by this common disease include:

  • broccoli
  • Cabbage
  • Cauliflower
  • Radish

Damping - Dampening or germination of seedlings is another common disease seen in most vegetables. Its source may be Aphanomyces, Fusarium, Pythium or Rhizoctonia in origin.

Verticillium vine - Verticillium wilt can afflict any number of vegetables from any of the Brassicae (except broccoli) for:

  • Cucumbers
  • Aubergine
  • Peppers
  • Potatoes
  • pumpkins
  • Radish
  • Spinach
  • Tomatoes
  • Watermelon

White mold - White mold is another common disease found in many crops and is produced by the pathogen Sclerotinia sclerotiorum . These include:

  • Some Brassicae vegetables
  • Carrots
  • beans
  • Aubergine
  • Lettuce
  • Potatoes
  • Tomatoes

Other diseases such as cucumber mosaic virus, root rot, and bacterial wilt can cause leaf wilt with apparent dead zones and mottled fruit.

Vegetable pests

Other problems that can be encountered when the growth of vegetables is caused by insect infestations. Some of the more common invaders that can be found in the garden include:

  • Aphids (feed on almost any type of crop)
  • Stinkbugs (damages the leaves of vegetables and fruit and nut trees)
  • Spider mites
  • Pumpkin bugs
  • Corn seed larvae
  • thrips
  • whiteflies
  • Roundworms or root node disease (causing galls on carrots and producing coriander, onions and potatoes)

Environmental vegetable garden issues

In addition to diseases and pests, gardens are prone to problems caused by temperatures, drought or over-watering, and nutrient deficiencies.

  • The end result of all previous rot (common in tomatoes, pumpkins and peppers) is a calcium deficiency caused by moisture flows into the soil or the application of excess nitrogen fertilizer. Avoid over-fertilization and use mulch to retain soil moisture and water during dry spells.
  • Edema is a common physiological problem found when ambient temperatures are cooler than soil temperatures and soil moisture is high with high relative humidity. The leaves often appear as having "warts" and afflict lower and older leaf surfaces.
  • A plant intended for sowing, otherwise known as bolting, is extremely common. Plants bloom prematurely and stretch as temperatures rise and days get longer. To avoid this, be sure to plant bolt-resistant varieties in early spring.
  • If plants fail to set fruit or drip flowers, temperature variables are likely to be the culprit as well. Snap beans may not bloom if temperatures exceed 90 F. (32 C.) but may resume flowering if temperatures cool. Tomatoes, peppers or eggplants are also affected by temperature fluctuations which can inhibit flowering or production.
  • Low temperatures between 50-60 F. (10-15 C.) can cause fruit deformation. Cold weather or low soil moisture can cause cucumbers to grow crooked or oddly shaped.
  • Poor pollination can also cause irregularly shaped kernels to form on sweet corn. To encourage pollination, plant the wheat in blocks of shorter rows rather than one long row.


Because autumn is the best time to act

All those hateful insects that have bothered you all summer begin to disappear as the days and nights get colder. Don't be fooled. Many of these garden pests are still around. They've laid their eggs in their nice dark potting soil or are settling in for a long winter nap.

Many insects spend part of their life buried in the ground, and winter is one of the most common periods. Grape moths, tomato moths, tomato woodworms, Colorado potato beetles, cabbage worms and cucumber beetles are all formidable pests that overwinter in the soil.

Insects are shallow burrowers and generally inhabit the first 2-10cm of soil. Your garden soil is ideal for them because it is light and well-drained. It is the perfect home for the winter.

This is why autumn is an excellent season to relieve garden pests. You can make great strides in reducing your general bug problems by taking a few simple steps this season. You will notice the difference next year, when your insect fights are only a fraction of what you normally experience.


How to use trap crops to control pests

There are two basic ways to use trap crops.

Same species The first is to plant several bait trap plants of the same species as the main crop. These decoy are planted before the main crop and serve as food for insects. After the pests have arrived, but before they have had a chance to attack the "real" crop, the baits are treated with pesticides or destroyed.

This works particularly well with larger plantings, and using bait plants around the perimeter helps as pests generally work from the outside. The blue skeleton is an excellent trap crop for attracting and retaining cucumber beetles, pumpkin ears, and insects.

Several species - The second method of using trap crops is to plant a completely different and more attractive species of bait trap. For example, sunflowers are extremely interesting for smelling beetles and insects with leaves, but they need to be planted in advance so that they bloom in time to intercept the insect's migration.

Once the destructive insects arrive, the gardener can use his or her preferred method of elimination. Some gardeners choose to use pesticides only on trap plants, in order to reduce the amount of pesticides used or completely destroy infected plants. Other gardeners prefer the more organic methods of cross-linking, vacuuming, or hand-picking to remove unwanted insects.


What Causes Rust Stains on Cucumber Plants

Anthracnose infects the stems, leaves and fruits of a number of plants, including cucumbers. Caused by the Glomerella lagenarium fungus, the initial symptoms of an anthracnose infection on cucumber leaves appear as patches of water soaked that expand to form 1/4-inch- to 1/2-inch-wide light-brown tan spots. The fungal spores develops during high humidity and rain. Anthracnose also causes fruit and stem lesions.

Aphids are small pests that cause rustlike spots on cucumber leaves. Measuring less than 1/8 of an inch, the tiny insects live on the underside of leaves from which they suck fruit juices with their piercing mouthparts, causing tiny, brown spots to appear. If left untreated, the leaf gradually turns brown and gains a lacy appearance. Although small aphid infestations are easily controlled through a spray from a hose, use a low-toxic insecticide to control large populations.
Alternaria Blight

Caused by the Alternaria cucumerina fungus, Alternaria bacterial is a disease that infects cucumbers, melons, gourds and squashes. Initial symptoms include tiny, circular water-soaked spots on the foliage that gradually enlarge and turn brown as the disease progresses. Humid climate and a temperature range of 60 to 90 degrees Fahrenheit promote disease and cause rapid defoliation on the cucumber plant.
Stem Blight

Gummy stem bacterial is a common disease of cucumbers that damage various parts of the plant. Initial symptoms of the disease appear as tiny, brown, angular spots on the leaves that progressively grow in size as the infection spreads. The holes the disease causes on the leaves cause a yellow halo around the surrounding brown area. Older spots appear dry and cracked.
Prevention

Taking preventative measures keeps the disease from occurring in the first place, thus limiting the use of fungicides. Grow cucumber plants in well-draining soil and rotate the crop every three years. Planting corn on one side of cucumbers helps prevent aphid infestations. Avoid picking cucumbers when the plants are wet, as humidity promotes the spread of fungal diseases. Remove and destroy damaged or diseased plants and clean up plant residues in the fall. Always use sterilized tools when pruning plants.


Video: How to Effectively Spray Cucumbers for Pests and Disease Management: Schedule u0026 Products -TRG 2016


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