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Why does the golden boxwood develop yellow leaves?
Golden boxwood Buxus sempervirens 'Latifolia Maculata' belongs to the Buxaceae family, Buxus genus. It is an evergreen shrub, 30-40 cm tall, with a compact form; the new leaves are bright yellow, and when mature they turn dark green with yellow spots, glossy. It is cold-resistant and shade-tolerant, suitable for loose and fertile soil, and can also grow in alkaline soil. It has low water requirements and only needs to keep the soil half-moist. It is relatively resistant to toxic gases such as sulfur dioxide, chlorine, hydrogen sulfide, and hydrogen fluoride. This species is a cultivated species, and in
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How does garden balsam damping-off occur?
Garden balsam damping-off is widespread in China and is a common disease in garden balsam cultivation, causing serious damage. The disease mainly infects the root and stem base. Symptoms: after the root and stem are affected, there is black constriction; when the environment is humid, white mold-like growth appears on the diseased part; the pathogen spreads rapidly and occurs severely, causing the upper leaves to wilt and dry up within a few days, and in severe cases the whole plant dies. The pathogen Rhizoctonia solani Kuhn is called Rhizoctonia solani, a fungus of the Deuteromycotina. This fungus does not produce spores; after the hyphae grow for a certain time, they interweave to form sclerotia,
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What living conditions does the shiitake mushroom need to grow?
The living conditions required for the growth and development of the shiitake mushroom generally include water, nutrients, temperature, air, light, and pH level. 1. Nutrients. The shiitake mushroom is a wood-decaying fungus that lives by decomposing and absorbing the nutrients within wood. In sawdust cultivation, adding some nutrients to the substrate, such as rice bran, wheat bran, sugar, and trace elements, can promote good mycelial development and help achieve high quality and high yield of shiitake mushrooms. 2. Temperature. The shiitake mushroom is a low-temperature, temperature-variable fruiting fungus. The optimum temperature for its spore germination is 22-26°C; the mycelium
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How does the Super Dry Rice 1 variety perform?
Super Dry Rice 1 is a new super-high-yield dry rice variety bred by the China National Rice Research Institute. Results from plantings in Hangzhou and Hainan show that this dry rice variety has strong stress resistance, high and stable yield, and above-average grain quality, with broad application prospects, especially when planted as an early crop (dry season) in Hainan and South China, where it has considerable yield-increasing potential and great value for development and promotion. The characteristics and key cultivation techniques of Super Dry Rice 1 are briefly introduced as follows: 1. Characteristics of Super Dry Rice 1. 1. Main agronomic traits. Super Dry Rice 1 demonstrated in the Hainan dry season
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What does licorice look like? A detailed introduction to its morphological characteristics
Licorice is a perennial herb, reaching 30-80 cm in height, with rhizomes that mostly creep horizontally. The main root is very long and thick, with reddish-brown outer bark. The stems are upright, bearing short white hairs and bristle-like glands. The odd-pinnate compound leaves have 7-17 leaflets, ovate or broadly ovate, with acute or obtuse tips and rounded bases, bearing short hairs and glands on both surfaces. The papilionaceous corolla is pale purple. The pods are flat, sickle-shaped or curved into a ring, densely covered on the outside with bristle-like glands. The flowering period is June to July, and the fruiting period is July to September.
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What does the air layering propagation method for azaleas mean?
The "air layering" propagation method for azaleas is also called the plastic bag air layering method: First, choose any part of a vigorous 1-3 year old branch. The length of the girdled ring section can be determined by the thickness of the branch. If the branch is about as thick as a chopstick, the length of bark to be removed can be 0.5-1 cm; for slightly thinner branches, the length can be shorter. For the peeling tool, you can use the nail of your right thumb: after selecting the spot, gently scrape from top to bottom, or use a small knife to score a ring at the upper and lower ends, then gently peel off the bark.
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How does 'Lübaoshi' pear perform in Zunhua, Hebei?
The 'Lübaoshi' pear was bred by the Zhengzhou Fruit Research Institute of the Chinese Academy of Agricultural Sciences by crossing 'Xinshiji' with 'Zaosu'. Zunhua City introduced the 'Lübaoshi' pear from the Zhengzhou Fruit Research Institute in 2003. Top-grafting was carried out in Xiafu Village, Xisanli Township, and the cultivar grafted over was 6-year-old 'Yantai' pear. 1. Test orchard conditions and management. The soil of the top-grafted orchard is sandy loam, with irrigation available. The level of management is moderate. In spring, bud grafting with wood was used, adopting multi-branch top-grafting, and the trees were in good condition at that time. The top-grafted 'Lübaoshi' pear occupied 1 row, 32 trees in total, and the grafting survival rate reached 97.7
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Why Does Schisandra Drop Its Flowers and Fruit? Causes and Control Methods
I. Causes of flower and fruit drop 1. Low-temperature freezing damage causes flower drop. In some areas of the east, the last frost period occurs in mid-May, and cold air masses cause physiological chilling injury, causing some flower buds to drop. 2. Herbicide drift causes flower drop. Field herbicides are mostly used in late April and early May, which is exactly the flowering period of Schisandra. Herbicide drift directly damages Schisandra petals, preventing female flowers from pollinating normally and causing flower drop. 3. Pests and diseases cause fruit drop. The main diseases are root rot, leaf blight, and powdery mildew, which cause fruit drop when they occur severely;
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What kind of growing environment does oleander like?
It likes sunny, warm and humid environmental conditions. It is relatively cold-tolerant, slightly shade-tolerant, slightly alkali-tolerant, tolerant of drought and poor soil, and intolerant of waterlogging; it has a certain resistance to toxic gases such as smoke and dust and sulfur dioxide. It is suitable for growing in fertile, loose, well-drained slightly acidic to slightly alkaline soil. Light and temperature: potted oleander needs to be brought indoors to overwinter, with the room temperature kept above 5°C, placed in a spot by a window with full sunlight. Generally it is moved into the greenhouse around October 20 and moved out of the greenhouse around April 20. After being moved out, it should first be placed in a wind-sheltered, sunny spot, then gradually
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How Does the San Jose Scale Spread? A Full Analysis of Control Measures
I. Distribution and Damage The San Jose scale (Quadraspidiotus perniciosus) in the Korla region mainly damages pear, apple, apricot, peach, hawthorn, grape, and white poplar, among other fruit trees and forest trees. The insects cluster densely on the branches and trunk in the upper canopy and inner part of the crown, with more on smooth-barked areas and the sunny side. Population density is highest on 2- to 5-year-old branch sections, and on 1-year-old branches they mainly gather around the bud bases. The San Jose scale sucks the sap of branches, leaves, and fruit as female adults and nymphs. Young branches and leaves dry up and fall off after being damaged; damaged fruit develops purplish-red
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