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What are the latest control methods for mango scale insects?
Scale insects are one of the main pests of mango, seriously affecting mango yield and quality, and causing huge losses to growers' economic returns. So how should mango scale insects be controlled? Follow along with the editor to see the detailed introduction. 1. Damage symptoms Scale insects
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Control Techniques for Aphids, Red Spider Mites, Scale Insects, Damping-Off, Rust, and Powdery Mildew on Flowers
In spring the temperature turns warm then cold again, and the air humidity is high. At present the occurrence of crop pests and diseases is at a moderate to severe level, and flowers also suffer from many pests and diseases. The following are generally the more serious ones from April to May: 1. Damping-off When the temperature reaches 20°C, newly sown
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Are stink bugs beneficial insects or pests? Uncovering the origin of the name "stink ladybug"
Stink bugs, about the size of a woman's fingernail, uniformly dark brown, are called stink bugs, fart bugs, poop bugs, or "stink ladybugs" because they release a foul odor. So are they beneficial insects or pests? According to agricultural records, stink bugs are a general term for a class of insects with abnormally variable wings, with over 30,000 species, of which more than 90% are pests. However, insects also have a beneficial side. Beneficial species include predatory stink bugs that feed on small insects and benefit agriculture, the medicinal jiuxiang bug, the edible guihua cicada, and the field giant water bug and pine algae bug that specifically prey on juvenile fish and harm the aquaculture industry. <p style="text-align: center;"><span style="line-height:1.6; text-indent:2em"></span></p> <p style="text-indent:2em;">Most stink bug species are pests. In the cotton region of the Yellow River basin, 3-5 generations occur each year, overwintering as eggs in dead branches and stubble of alfalfa, broad bean, pomegranate, apple, etc., as well as in dead cotton branches and boll shells. They hatch in early to mid-April and emerge as adults in late April. Mid-June to mid-July is the peak damage period. Adults are phototactic, lay more eggs in densely growing cotton fields, and prefer high temperatures and rain. Temperatures of 25°C-30°C and relative humidity above 80% are suitable for egg hatching and reproduction, and cotton fields near alfalfa plots, green manure fields, or with many weeds suffer the most severe damage.</p> <p style="text-indent:2em;">In the suburbs of Beijing, stink ladybugs mainly harm fruit trees such as pear, peach, and apple, with damage rates generally around 15% to 25%, and fruit damage rates as high as over 70%, turning the fruit into “monkey-head peaches” and “pear lumps” that taste bitter and lose their food value. In urban areas, stink ladybugs harm various landscaping trees and flowers such as willow, elm, mulberry, poplar, pagoda tree, eucommia, paulownia, and pomegranate. They suck the sap of flower buds, petals, leaves, tender leaves, and fruits, greatly reducing the effectiveness of landscaping and beautification.</p> <p style="text-indent:2em;">To control stink ladybugs, you can concentrate on trapping and killing them when they overwinter; in early spring, take measures such as plugging tree holes and scraping off old bark; at noon in summer, gently shake the tree trunk by hand and promptly kill the stink ladybugs after they fall to the ground; in addition, control should be carried out during the nymph stage of stink ladybugs, because during this period they can only crawl and cannot fly. At present, the use of the stink bug's natural enemy, the stink bug egg parasite wasp, for biological control of stink ladybugs at the forestry biological control center has entered the experimental stage. Field surveys show that the stink bug egg parasite wasp has a high parasitism rate on stink bug eggs, with an average parasitism rate of 47.22% on tea-winged stink bug eggs and 30.56% on pear stink bug eggs, making it a natural nemesis of stink ladybugs.</p> <p style="text-indent:2em;">The rice stink bug egg parasite wasp parasitizes rice brown stink bug eggs, singly. In a July 1957 survey of rice fields in Hangzhou, Zhejiang, up to 97.1% of rice brown stink bug eggs were parasitized by black egg wasps, of which this species accounted for 94.2% and the rice stink bug small black egg wasp for 2.9%. The sex ratio of this species was 81.54%. According to another survey in Wangcheng, Hunan, of the 67.24% parasitism rate of rice brown stink bug eggs, this species accounted for 41.75% (Zhou Renlian, 1955). Parasitized eggs appear black before emergence and light yellow after emergence. The emergence hole is on the top surface of the egg, irregularly circular, with an uneven cut edge and strip-like debris connected to the rim of the hole. Creamy egg contents remain on both sides inside the egg. Adult wasps mate immediately after emergence, and the time is extremely short, only 3-5 seconds. When laying eggs, they constantly use their antennae to explore above and to the sides of the egg, and always insert eggs from the side. Laying one egg takes about 30 seconds; after laying, they move slightly and then lay eggs on another host. When reared by introducing fresh stink bug eggs, the period from egg laying to emergence is 7 days, with an average of 22 offspring wasps. Adult wasps live 4 days, and if supplied with diluted honey solution, this can be extended to 20-22 days.</p>
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Table of insecticides, fungicides and herbicides for 30 common crops including rice, wheat and cotton
During their growth, crops need different insecticides, fungicides and herbicides. Isn't it a hassle to always wait until you need them to look up which product to use? Here are the insecticides, fungicides and herbicides for thirty common crops, so save this right away!
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Is the pill bug poisonous, and is it a pest or a beneficial insect? Methods to get rid of it in soil and at home
The pill bug generally refers to the woodlouse (Armadillidium vulgare), also known as shufu, fupan, shugu, shunian, and soil louse, among other names. So is the pill bug poisonous? Is it a pest or a beneficial insect? What does it eat? How do you get rid of it in soil and in the rooms of your home? According to insect enthusiast Xiaozhi,
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Are Soil Nematodes Insects? Full Analysis of Their Harm and Control Methods
Nematodes in soil are abundant in number and diverse in species. Soil nematodes are widely distributed in all types of soil, and the number of nematodes varies with soil depth, with the largest number of soil nematodes distributed within the 10-20cm soil layer. As one of the number one killers among common soil-borne diseases, nematodes
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How do pitcher plants catch insects? Are they harmful to humans, and how to grow them at home
Pitcher plant, also known as water-pitcher plant, monkey water bottle, monkey urn, piglet cage, and forget-sorrow grass, is an annual herb with no bulb, flowering and fruiting throughout the year. So how does the pitcher plant eat insects? Is it harmful to humans? Can it be kept at home? How to grow it? According to data from the Droseraceae family,
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Can pitcher plants be kept at home? Toxicity, why they eat insects, and how to sow seeds
Pitcher plant is the general term for all species in the genus Nepenthes. Also called water-pitcher plant, monkey water bottle, monkey jug, piglet cage, and Leigong pot, it belongs to the tropical insectivorous plants. So can pitcher plants be kept at home? Are they poisonous? Why do they eat insects? How do you plant the seeds? From pitcher
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How many generations of the boring pest cotton bollworm occur in a year, and how should insecticides be used for its control?
The cotton bollworm, of the order Lepidoptera and family Noctuidae, is widely distributed in China and around the world, and occurs in both cotton-growing and vegetable-growing regions of China. The cotton bollworm is an important boring pest during the cotton bud and boll stage, mainly boring into and feeding on buds, flowers and bolls, and also feeding on tender leaves. So how many generations of the cotton bollworm occur
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What are the effects and functions of "insect-fungus complex" cicada flower? How much to eat at one time? Can it treat kidney disease? Who is suitable to eat it?
Cicada flower is commonly known as large cordyceps, cicada pupa grass, cicada rong, crown cicada, hu cicada, tiao, tang tiao, tang cicada. Like cordyceps sinensis, it is also an insect-fungus complex. Some people believe that eating cicada flower has an immune-regulating effect. So what are the effects and functions of cicada flower? One time
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