Hollow cabbage is a very strong vegetable, warm and heat-resistant to freezing, the weather is still warm in autumn, they can also grow well, last year's willow leaf hollow cabbage planted in the field was only pulled out after the National Day and then planted autumn vegetables, although at that time late autumn was bitten by some pests, but overall it is not serious, and this year's planting of large-leaf hollow cabbage grew well in the early and middle of the morning, do not worry about insect infestation, but after mid-August it was bad, bitten by insects into a lot of scratches like painting on the leaf surface, in addition, There are still a few leaves that have been bitten and notched, and I have pulled out the hollow cabbage to dry the ground a few days ago; and the pests that harm the hollow cabbage, the sweet potato vines planted in the middle of this month when they endanger me; personal preliminary judgment that those pests are suspected to be sweet potato leaf beetles, some kind of jumping beetle pests, the following to share:
The hollow cabbage planted last year entered October
The hollow cabbage pulled out in late August this year is pupae in circles
First, it is suspected that sweet potato leaf beetles and jumping nails harm hollow cabbage and affect sweet potato vines
1. Suspected jumping beetle pest
The symptoms of those hollow cabbage insect infestations are mainly bite marks, and a few months ago there were vegetables infested with insects in the field, so at first I thought that hollow cabbage had also been bitten by pests such as leafminer flies, and I also observed it specially, but there was no gain; it seemed that there were a lot of small black worms that were almost one millimeter in size; I found that those small black worms and cruciferous vegetables such as baby cabbage cabbage in the field this spring were hit by yellow curved strip jumping beetles. In addition to the color of the pest itself and the harm of the hollow cabbage leaves into scratches are not the same (yellow curved stripe jumping nails to the vegetable leaves to come out of the small hole), other aspects such as bouncing fast, day and night harm vegetable leaves, vigilance is not low, etc. are very similar, so it is judged that the black insect is suspected of jumping beetle pest, and the jumping nail is a large category, and there are many types of jumping nails under it, and the rural small vegetables are shallow and do not know what kind of pest it is.
The hollow cabbage leaves are pests in circles
And one thing is that this pest harm vegetable is more "single-minded", how to say it, when the hollow cabbage is infested, there are other vegetables planted in the field, but I have not seen other vegetables bitten into a strip by the insect; and after I pulled out the hollow cabbage in late August, the sweet potato vine planted in the new cuttings in the middle of the month was bitten into a strip by those small black worms, just like the hollow cabbage encounter.
The cabbage sown the other day was not insectized
A few days ago it rained, saw the temperature is slightly lower, I sowed some cruciferous vegetables (cabbage, yellow cabbage), three days on the seedlings, now about 5 days like this, but did not see those small black worms to harm those small vegetable seedlings, and before the pests in the field, cruciferous vegetables are the most vulnerable to serious harm, in addition, hollow cabbage ridge on the previous intercropping pepper plants have not been harmed; later I check the data that said that in the current host record of the taxa, 85% of the jumping beetle genus is a specialized genus, that is, the country cabbage at the beginning of this paragraph said "Specifically", they endanger hollow cabbage, sweet potato vine, did not harm other vegetables, and hollow cabbage, sweet potato vine are all vegetables of the sweet potato genus of the family Spinifer family.
The sweet potato vines planted in the middle of the month were not insectized at first
The circle on the potato leaf is a pest suspected of jumping beetle
2. Suspected sweet potato leaf beetle
In addition to being bitten into scratches by many small black bugs, the hollow cabbage has also been bitten into irregular holes by some black bean-sized bugs, those bugs are higher than the small black worms, the shell looks at the pan-metallic luster, as far as I photographed, there are copper-colored, green, as shown in the picture of this article; relatively speaking, this pan-metallic pest reaction is significantly slower than that of the small black worms, easy to catch and throw on the ground and do not fly away, a foot stepped on; and they not only endanger the hollow cabbage, but also endanger the newly planted sweet potato vines at the end of this month.
The hollow cabbage that has been severely wormed, the arrow points to the suspected sweet potato leaf beetle, green
This pan-metallic pest has not been encountered before, and now encountered, I also have to pay attention, after all, I also grow vegetables to eat, so check the data to try to understand, only to find that this bug is suspected of sweet potato leaf beetle, generally harmful to hollow cabbage, sweet potato; after observation, it was not found that they harm other vegetables in the field, they should also be as harmful as those small black worms Vegetables have a special genus, because sweet potato leaf beetles, jumping beetles are pests under the general family of leaf beetles.
Second, how harmful are the pests of sweet potato leaf beetles and jumping nails
Sweet potato leaf nails, jumping nails how harmful, I believe that the small partners have seen the real picture also roughly understand, the leaves are destroyed into that, the difference is certain, and the damaged hollow cabbage, sweet potato leaves, folk side dishes have been picked to use garlic stir-fry to eat, but can obviously feel the taste is poor, unpalatable, the family does not like to eat, and finally poured.
The infested leaves are flowery, broken and yellow
From the growth of the vegetables themselves, the leaves need to be photosynthetic, breathable, etc. to grow well, the leaves are so bitten, small parts and even large areas of the leaf surface of the fine leaf veins are destroyed, water and nutrient transport is hindered, the growth is getting worse and worse, the leaves are yellow, but also appear slightly hard and brittle, there is no soft feeling of growth before; before pulling out the seedlings, I try to pluck the leaves to leave part of the stem, but as new leaves grow at the stem nodes, they are insects.
Try growing hollow cabbage
Within a few days of growing new branches and leaves, it was insectized, and the circle was suspected of being a pest of jumping nails
Our side of the weather is also suitable for planting hollow cabbage, so early destruction of the seedling itself I think it is a pity, so a few days ago to pull out the seedlings to get some stalks to scatter grass and wood ash placed in the evening to plant into 2 foam boxes, foam boxes placed next to the wall, from the original place where the hollow cabbage was about twelve or thirteen meters like this, across the house; these two sky cabbage stems grew new leaves, and found that there is a small black worm suspected of jumping nails on it, but did not find that there is sweet potato leaf beetle, which shows how focused this pest is.
Third, why breed sweet potato leaf nails and jumping nails
Why there are such pests in the vegetable field, I myself have doubts, I think when I first returned to the countryside to grow vegetables, vegetable pests were very few, with more planting, but also more and more found vegetable pests; pests have wings and feet, can fly and climb, and they have their own sense of smell, the small vegetable fields in the countryside have vegetables they like to eat, they come to plague is not strange, and last year also planted hollow cabbage sweet potato vines, did not see, this year suffered, do not know what the pest hit the calculation.
There were no insects when it rained in early August
Breeding such pests in the field, the country vegetables think that in addition to the vegetables themselves are attractive to them, but also have a certain relationship with the weather; this year is the beginning of August autumn, the weather on our side in August as a whole relative to the previous summer rain frequency is more, at most every other week so it rains, early August when it rains I take pictures, hollow cabbage also grows well, did not suffer from those pests; and the middle and late months of the insects, the second half of the month is obviously serious.
Cottage side dish local weather today
When it is sunny, the maximum temperature during the day is about 34 degrees, and the rainy day is slightly lower, the air humidity is high, the air humidity is high, the temperature drops by several degrees, and the night can be as low as 25 degrees, like this, it is close to the evening and there is a little light rain, the temperature is low, and now it is 28 degrees; that is to say, the weather tends to be high temperature and high humidity, warm or hot, high air humidity, and the soil is often kept moist, which is conducive to the breeding of pests.
Fourth, how to control sweet potato leaf nails and jumping nails
From the above description, we know that as long as there are vegetables in the field that these pests like to eat, pull out the old ones, and grow new ones, they will continue to be harmful, so how to prevent them?
1. Sweet potato leaf beetle
There are sticky insect plates hanging in the ground, and it can be clearly seen that there are many "jumping nails" caught, but there is no catch to catch "sweet potato leaf nails", and artificially grasping insects, sweet potato leaf nails are easy to catch and destroy, and the insects are obvious.
Hollow cabbage is wormed
Sweet potato leaf beetles have larvae, larvae live in the soil, will harm the roots of vegetables, the country vegetables turned over the ground did not find there (may also be buried by the soil, did not see), but if the larvae exist will also grow, then will also endanger the leaves, can not be ignored, if the small partners in the field by such pests, in addition to pay attention to catch adults on the leaf surface, but also dig up the soil to see the larval damage, see how to control better.
Boiled chilled chilled pepper water
2. Jumping armor
And jumping armor is more troublesome, small and large number, easy to be frightened to fly away, and then fly, manual capture is recommended to get a larger board of sticky insects in the top of the affected vegetables, the side gradually close, they will fly will stick to the sticky insect board; I have tried to sprinkle grass and wood ash to repel insects, but the effect is general, the back to see there are still worms staying.
Sprinkle grass and wood ash, spray pepper water, or find a small number of pests, such as circles, afternoon shooting
And yesterday boiled pepper water tried to deal with aphids, and then also take the spray sweet potato vine (spray leaf front and back), foam box planted hollow cabbage (stems and leaves are sprayed), but after drying still see that there are small black worms staying, some potato leaves are still three or four at the same time on it, but did not see the sweet potato leaf beetle, should be hidden where I did not see; if you want to better prevent insects, it is recommended to buy that kind of insect-proof mesh cover to cover the corresponding vegetable ridges, similar to the usual people hang mosquito nets in the room to prevent mosquitoes, bugs can not go in, can not go in, can not go out The countryman also plans to make such a net cover.
Photographed at night, you can still see a small number of pests
In general, these two pests are more specific, but harmful, uninterrupted, growing vegetables to grow more smoothly, if necessary, or to use medicine, otherwise they can only be destroyed like a small vegetable; whether the common dichlorvos broad-spectrum agents on the drug are easy to use, it is recommended to consult pharmacists will be more professional, they generally know which is more appropriate.
vermin
Summary: hollow cabbage, sweet potato vines are common vegetables, although the suitable vitality is strong, generally speaking, there are few insect pests, but once the insect infestation occurs, the impact is not small, I hope to share this article to give you a certain harvest, inspiration, into September, October or hollow cabbage sweet potato vine growth season, if the small partner found that there is such a pest, take measures to prevent and control as soon as possible.