-
How to prevent and control brown spot and shot hole disease in cherry blossoms
[Distribution] Cherry blossom brown spot and shot hole disease is an important disease of cherry blossom leaves and occurs in cherry blossom growing areas throughout China. [Symptoms] It mainly affects mature leaves and also affects young twigs. Infected leaves first show pinhead-sized purplish-brown dots, which soon enlarge into circular to nearly circular spots, 1-4 mm, brown in the center, slightly with concentric rings, with purple or reddish-brown edges, and grayish-brown fuzzy dots appear on the lesions; later, an abscission layer forms around the lesions, brown mold-like growth appears on both sides of the diseased leaves, and the center of the lesion dries up and falls off, forming round small holes and producing shot hole spots,
-
Technical measures to prevent the production of inferior cocoons in silkworm rearing
In silkworm rearing, selecting high-yield and high-quality cocoons is the key to a bountiful harvest. During the silkworm feeding process, many factors can produce large numbers of inferior cocoons and reduce @#@250@#@ benefits. In order to avoid producing inferior cocoons, increasing the rate of good cocoons and reducing the rate of inferior cocoons is an important step in further increasing the economic benefits of silkworm farmers. The relevant technical points for preventing inferior cocoons are briefly introduced as follows: 1 Strengthen feeding management 1.1 Rear young silkworms under plastic film mulching, which both keeps mulberry leaves fresh and encourages the larvae to feed readily, helping the larvae to eat their fill of good mulberry leaves and improve
-
A Detailed Guide to the Prevention and Treatment of Common Scorpion Diseases
Raising scorpions is a good way for farming families to get rich. During the rearing process, scorpions are prone to diseases such as black abdomen disease, dry wilt disease, scorpion lice and hemiplegia. The prevention and treatment methods are described below: 1. Black abdomen disease: the front abdomen of the scorpion swells and turns black, and then it dies. The cause is that the scorpion has eaten or drunk unclean, foul food or water. The symptom is a swollen black abdomen, and black water or sludge-like matter can be pressed out of the abdomen by hand. The prevention and treatment method is to pay attention to hygiene and remove rotten food or dirty water. 2. Dry wilt disease: the tail (rear abdomen) of the scorpion turns yellow
-
Detailed Explanation of Key Points for the Prevention and Control of Mink and Raccoon Dog Diseases
This disease is an acute, highly contagious infectious disease caused by a virus. The main characteristics of this disease are severe diarrhea, with grayish-white sloughed intestinal mucosa and fibrin mucous masses in the feces, a significant decrease in white blood cells, and severe gastrointestinal inflammatory changes. 1. Pathogen The pathogen of this disease is raccoon dog enteritis virus, which has the main characteristics of the parvovirus group. From the perspective of the virus, raccoon dog enteritis virus is related to feline panleukopenia virus, and the vaccines prepared from each can provide cross-protection to each other; however, protection against canine parvovirus enteritis is poor. 2. Epidemiological characteristics
-
Reasons Why Newly Purchased Dogs Are Prone to Illness and Prevention Methods
With the improvement of living standards, more and more people are keeping pets. For various purposes, people regard dog keeping as a fashion. But people generally report: dogs are difficult to raise, especially newly purchased dogs are prone to illness. In practical dog cases, newly purchased dogs account for more than 1/3, bringing a lot of trouble and losses to dog owners. Why are newly purchased dogs prone to illness and how should it be prevented and treated? Based on our years of clinical observation, we believe there are the following main reasons, and corresponding preventive measures should be taken. 1 Main reasons why newly purchased dogs are prone to illness 1
-
What to Do About Postpartum Eclampsia in Dogs? Causes and Prevention and Treatment Methods
It is caused by a drop in the bitch's blood calcium concentration after giving birth. Clinically, symptoms such as tonic or intermittent muscle spasms and elevated body temperature may be seen. Treatment focuses mainly on supplementing blood calcium. [Prescription 1] 10% Calcium Gluconate Injection 10-30 ml - 5% Glucose Saline 250-SOO ml. Directions: slow intravenous injection once. [Prescription 2] Vitamin D Calcium Colloid Injection 1-3 ml. Directions: intramuscular injection or Pishu acupoint injection once.
-
How to prevent and treat jujube witches' broom? Introduction to practical prevention and treatment methods
Jujube witches' broom is a devastating disease of jujube trees. After a jujube tree is infected, it shows the following abnormal phenomena: 1. Floral organs revert to ancestral form, the flower stalk lengthens to 3-6 times that of a normal flower, and the sepals, petals, stamens and pistils grow abnormally, becoming small pale green leaves. On diseased trees with stronger vigor, slender dwarf shoots may also sprout from the leaf axils of the small leaves, forming clusters of branches. 2. The main and secondary buds of developing branches and the fruiting mother branches sprout and grow multiple times a year, continuously producing small yellow-green branches and leaves, forming dense clusters of branches that do not easily fall off in winter. 3. On the trunk and branches of the whole tree, large numbers of latent buds that were originally dormant sprout massively
-
Prevention of Potato Poisoning
Potatoes are rich in soluble carbohydrates and have good digestibility for all kinds of livestock, and the nutrition of raw and cooked feeding is basically similar. However, the stems, leaves and tubers of potatoes all contain toxic substances, so feeding should be done with great caution. Potatoes contain a lot of non-protein nitrogen, accounting for about half of the crude protein, among which there is a nitrogen-containing substance called solanine, which is a toxic substance. The content of this substance is highest in immature and sprouted tubers, generally most abundant on the green skin of the stems and in the bud eyes; the stems and leaves contain more nitrate, and after livestock consume them, it will cause enteritis
-
Preventing Sprouting in Stored Potatoes
To prevent potatoes from sprouting during storage, spray 2000-3000 ppm of maleic hydrazide in the field during the late growth stage; alternatively, one week before harvest, spray the whole plant with 500-1000 ppm of 2,4,5-T to extend the dormancy period and storage life; spraying the whole plant with a mixture of 3000 ppm maleic hydrazide and 300 ppm 2,4,5-T 2-3 weeks before harvest gives an even better sprout-prevention effect. In addition, after the potatoes are harvested, spray methyl naphthaleneacetate onto dry soil, then
-
What to Do About Potato Rot During Storage? Causes and Preventive Measures
Potato is one of the main crops in Qinghai Province, with the characteristics of high and stable yield, a short growth period, and strong adaptability. In addition, it is rich in nutrients, serves as both grain and vegetable, and has high economic value, making it very popular among the general public. In recent years, with the development of the potato industry, significant production benefits have prompted the potato planting area to expand year by year. However, due to extensive scientific management during potato production, harvest, handling, and storage, a large number of seed potatoes rot during storage. According to surveys in recent years, in most high mountain areas of Qinghai Province
条件筛选