-
How to prevent and control soft rot in oyster mushrooms? These methods are very practical
Dong Yushan from Ligou Town, Pingyin County, Shandong Province, wrote in: "The oyster mushrooms grown in my town and the surrounding townships develop small yellowish-brown spots during the fruiting stage, especially when the fruiting bodies are about 1 cm in diameter, which then rapidly expand, and finally the entire fruiting body turns brown, becomes soft and sticky, and ultimately rots. Even though the mycelium inside the mushroom log is still very dense and white, it is very difficult to get another flush. What disease is this? How should it be prevented and controlled? Host Yangguang replies as follows: The situation reported by this friend also occurs quite often in other areas. Judging from the described symptoms,
-
Occurrence and Control Methods of Major Diseases, Insect Pests and Rodent Pests of Lilies
Lily, also known as night lily, mountain lily, Zhongpeng flower, etc., is a plant that combines medicinal, edible and ornamental uses, with a large market demand. Lily is also a traditional export specialty of China and is planted throughout the country. However, with the expansion of lily planting area, diseases, insect pests and rodent pests have become increasingly serious, becoming the main factors restricting stable and high yields of lilies. The occurrence and control methods of the main diseases, insect pests and rodent pests of lilies are introduced as follows: 1 Main diseases and control 1.1 Main diseases There are many kinds of lily diseases, but fungal diseases such as gray mold and Fusarium wilt are the main ones.
-
Control Methods for Lily Mosaic Virus (CMV)
Symptoms: Chlorotic mottling or necrotic spots appear on the leaves. Pathogens: Lily latent virus [Lilylatentvirus] and Cucumber mosaic virus [Cucumbermosaicvirus] (abbreviated as CMV). Lily latent virus is widespread among plants of the genus Lilium; some lilies show no symptoms after infection with this virus, while others develop chlorotic mottling symptoms. Cucumber mosaic virus causes chlorotic mottling symptoms, and if this disease occurs together with lily latent virus spots. Transmission route: The green peach aphid and other aphids are the vectors that spread the virus.
-
What are the control methods for bulb mites on lilies?
Control methods for bulb mites on lilies: 1. Crop rotation and changing the crop for 4a. When planting lilies along a slope, plant from the bottom upward to reduce the spread of pathogens. 2. Select bulbs free of disease, mites and mechanical injury as seed stock, or mix into farmyard manure and apply, or apply together with irrigation water; or use 2% isofenphos-methyl powder at 2 to 3 kg per 667 sq m mixed with 25 to 30 kg of fine soil to make poisonous soil, or use 3% isofenphos-methyl granules, or 3% carbofuran granules, or 5% phoxim granules, or 5% diazinon granules, at 2
-
Identification of Physiological Disorder Symptoms in Lilies and Their Prevention and Control Methods
Physiological disorders, also known as non-infectious diseases, refer to the disruption of normal physiological metabolic functions in the plant itself caused by factors other than pathogens. The causes of physiological disorders may be internal factors such as mineral element deficiency, tissue aging, or environmental factors such as temperature, light intensity, and abnormal gas composition. I. Leaf scorch: The typical symptom of leaf scorch is the formation of semicircular necrosis at the tip and margin of the leaf, sometimes also manifested as chlorosis or necrosis at the leaf margin, or yellow-green spots appearing on parts of unexpanded or expanded young leaves
-
What are the control methods for the soybean root miner fly?
The soybean root miner fly belongs to the order Diptera, family Agromyzidae. Also known as the soybean root maggot, soybean root miner fly, etc., this insect is a monophagous pest that only damages soybean and wild soybean. It is distributed in Heilongjiang, Liaoning, Inner Mongolia, Shandong and Hebei, among other places. Damaged plants can suffer yield losses of more than 40% per plant compared with healthy plants. 1. Morphological characteristics (1) The adult is about 3 mm long, glossy black, with wings that are light purple with a metallic sheen. The compound eyes are bright red. (2) The egg is about 0.015 mm long and about 0.04 mm wide, kidney-shaped, white and translucent.
-
What are the control methods for jujube fruit shrinkage disease?
1. Symptoms: When jujube fruit shrinkage disease occurs, a pale yellow halo (ring) first appears on the shoulder or waist of the fruit, gradually expanding into irregular sunken lesions; the peel becomes water-soaked and infiltrated, with scattered needle-like round brown dots, and the flesh becomes earthy yellow, soft, spongy and necrotic; the fruit shrivels, tastes bitter, and is unfit to eat. 2. Disease pattern: Preliminary research has determined that jujube fruit shrinkage disease is a bacterial disease, and the pathogen mainly overwinters on fallen diseased fruit. It generally spreads and infects jujube fruit during the fruit coloring and ripening stage; the pathogen enters through fruit wounds via wind and rain or directly penetrates the peel.
-
Detailed Explanation of Peach Tree Shoot Control and Flower Promotion Methods and Technical Points
Many flower farmers who grow peach blossoms call to ask how to stop the growth of peach blossoms and form more flower buds? The main reason affecting flower bud differentiation is the contradiction between reproductive growth and vegetative growth. When vegetative growth is too vigorous, it will seriously affect reproductive growth, that is, flower bud differentiation. For this reason, during the flower bud differentiation period (late May to before leaf fall), attention must be paid to the balance between the two in order to ensure normal flower bud differentiation. 1. From late May to June, pinch off the tips at the 10-12 leaf position of the autumn shoots to promote flower bud differentiation and promote branching, or spray shoot-control agent. 2.
-
Occurrence of Pests and Diseases in Rice Seedbeds and Current Control Methods
During the rice seedbed stage, aphids, thrips, and damping-off disease mainly occur, harming the growth of rice seedlings. Adult and nymph rice thrips often gather at the leaf auricle, ligule, and inside the central leaf to cause damage; the affected parts first show small yellow-white spots, after which mottled white patches appear on the leaf surface. Affected seedlings recover green slowly, become stunted and fail to grow, appearing as if "stuck in the clump." Damping-off disease mostly occurs in wet (semi-dry) seedling nurseries and dry seedling nurseries, causing seedling death. Because temperatures in early to mid-April are unstable, aphids, thrips, and damping-off disease are prone to occur, affecting full, uniform, and strong seedlings. Agricultural technology centers of all townships and subdistrict offices are requested to strengthen water
-
Damage Caused by the Rice Stem Maggot to Hybrid Rice Seed Production and Its Control Methods
The rice stem maggot (Chlorops oryzae Matsumura) is mainly distributed in China in Heilongjiang, Zhejiang, Jiangxi, Hunan, Hubei, Guangdong, Guangxi, Yunnan, Guizhou, Sichuan, Chongqing and other provinces and areas. In recent years it has become one of the main insect pests in rice production in the hilly and mountainous areas of Chongqing, and the losses it causes have exceeded those of some important pests such as stem borers. In hybrid rice seed production, the occurrence of the rice stem maggot seriously affects the development process of rice, thus leading to poor flowering-date synchronization between the male and female parents and affecting seed production
条件筛选