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There are ways to prevent and control orchid pests and diseases that work even better than pesticides
When orchids suffer from pests and diseases, these methods can be used to prevent and control them, with better results than pesticides. Orchids suffering from pests and diseases is truly a troublesome thing. Especially for home-grown orchid bonsai, using pesticides to sterilize and kill insects, for a limited...
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Pennywort severely drooping from lack of water: how to prevent and handle it?
A while ago, I kept a pot of pennywort. Because I went out for a few days and could not replenish the water in time, the pennywort became severely short of water. Almost all the leaves bent over, only a scant few leaves were still standing, and some of the leaves containing less water began to show signs of withering.
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What to Do About Sweet Cherry Fruit Cracking? Cause Analysis and Prevention Measures
Causes of Sweet Cherry Fruit Cracking and Their Prevention Measures 1 Factors Affecting Fruit Cracking 1.1 Relationship Between Varietal Genetic Characteristics and Sweet Cherry Fruit Cracking It is generally believed that sweet cherry fruit cracking has a certain correlation with the characteristics of the variety itself, and sweet cherry cracking susceptibility is determined by genetic characteristics. The degree of cracking varies significantly among varieties, and the cracking susceptibility of the same variety also differs with different rootstocks. The cracking trait of the parents can be passed on to the offspring through inheritance. Yamaguchi et al. investigated the cracking behavior of 37 sweet cherry varieties and also found significant differences in cracking among varieties, which were positively correlated with fruit weight and flesh firmness. Greco et al. [Jishan Huayao] studied the cracking resistance of 30 sweet cherry varieties in the Apulia region of Italy, and the results showed that the cracking susceptibility of sweet cherries is related to genotype. Simon analyzed the cracking susceptibility of sweet cherry varieties and classified the cracking resistance of 51 major sweet cherry varieties grown worldwide into 5 levels: extremely resistant to cracking, resistant to cracking, relatively resistant to cracking, prone to cracking, and extremely prone to cracking. Among them, extremely resistant varieties include "Star" and "Sue"; resistant varieties include "Lapins" and "Sam"; relatively resistant varieties include "Summit", "Sunburst", and "Sylvia"; prone varieties include "Santina", "Stella", "Van", and "Sweetheart"; and extremely prone varieties include "Bing" and "Tieton". The cracking resistance performance of some of these varieties in Hungary differs slightly from their performance in China, which shows that the cracking susceptibility of the same variety also differs across different cultivation regions. Balbontín et al. used sweet cherry varieties with different cracking resistance as test materials and found that expansin genes are expressed at higher levels during the ripening stage of resistant fruits. Expansin genes can loosen the fruit skin cell walls and rapidly buffer cell wall tension, thereby preventing sweet cherry fruit cracking. Other studies have shown that fruit cracking is strongly correlated with the characteristics of epidermal cells at the fruit apex. Varieties with short epidermal cells at the fruit apex have milder cracking, while varieties with long epidermal cells at the fruit apex crack severely. Varieties with thick skin and neatly, tightly arranged cells are not prone to cracking; varieties with thin skin, large intercellular spaces, and loosely arranged cells are prone to cracking. Fruit cracking is related to poor skin extensibility and increased osmotic pressure of the flesh during fruit ripening.
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What to Do About Fruit Cracking in Dahongrong Apples? A Detailed Guide to Prevention and Control Methods
What to do about fruit cracking in Dahongrong apples? On August 29, 2017, Hou Laosan from Taoyuan Subdistrict Office in Pingyuan County brought four Dahongrong apples in for consultation. The apples were found to have severe fruit cracking. An on-site investigation in the orchard showed a cracking rate of 60%-70%, and it was still increasing.
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How to prevent and control peach tree gummosis? Understanding the causes is key
Causes and control measures of peach tree gummosis 1 Symptoms The disease mainly occurs on the root crown, trunk, and main branches, with the trunk being the most prominently affected. The trunk is affected more severely than the branches, and small branches and fruit can also be affected. In the early stage of the disease...
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How to prevent the variety from rooting after fruit tree grafting?
How to prevent the grafted variety of fruit trees from rooting? In recent years, when visiting orchards, I often come across dwarf trees that have grown tall, with a tree full of vigorous shoots that simply cannot be controlled, and I thought I had bought fake seedlings. Looking under the tree, I could not see the graft union. After digging away the soil, the graft union was in the soil, and the variety above the union had already rooted. Once the variety grows a single root, the tree's vigor will bounce back, and when the variety roots, as long as conditions are suitable, the roots it grows are often very thick (Figure 1) [Jishan Huayao], so special attention must be paid.
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New technology for the prevention and control of Armillaria root rot in peach trees
New technology for the prevention and control of Armillaria root rot in peach trees 1 Symptoms of Armillaria root rot damage in peach trees The main symptom of Armillaria root rot is that the space between the cortex and the xylem is filled with a white to pale yellow mycelial layer, with the mycelium spreading outward in a fan shape; the fresh mycelial layer shows blue-green fluorescence in the dark...
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Why Does an Areca Palm Have Withered Leaves? Causes, Treatment and Prevention
The areca palm (Dypsis lutescens) is a very popular indoor green plant. Its leaves are rather slender, with tips that droop slightly, giving it an elegant and graceful appearance. It is a tropical foliage plant. It is mainly placed in living rooms, studies and other places, where it can play a very good role. First...
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How to care for roses in summer? This is the more appropriate way to prevent and control rose pests
Roses are also known as four-season flowers, named for blooming in all four seasons. As one of the flowers with a great variety of cultivars and extremely high ornamental value, they are cultivated all over China, and because roses are relatively easy to grow, many friends...
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Smart Prevention Tips for Grape Downy Mildew: Microbial Agents Work Wonders
Grape downy mildew is one of the main diseases of grapes, found in vineyards throughout China, especially in humid, rainy areas where the disease is more severe, causing leaf scorch, poor growth of new shoots, and even rotting of young fruit, seriously affecting grapes...
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