Amphisarca Lists
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Introduction to the symptoms of grape black pox
It is a fungal disease, which mainly harms the green tender parts of grapes, such as young fruits, leaves, petioles, pedicels, shoots and so on. Black pox disease can occur from sprout to late growth stage. Serious young fruit infection in spring and summer appears dark brown halo, like "bird's eye", disease spot can be connected into large spot, later spot hardening or cracking.
2018-09-11 -
Introduction to the occurrence characteristics of grape black pox
The pathogen overwintered mainly as sclerotia on the disease spots of new shoots and tendrils. In the next spring, when the temperature was higher than 2 ℃ and the high temperature lasted for more than 24 hours, a large number of conidia were produced from the sclerotia, which were transmitted to the green young parts of grapes by Rain Water, and the conidia produced germ tubes in water and were quickly fixed to the substrate, which led to primary infection after germination. It's time to...
2018-09-11 -
Introduction to the prevention and control of grape black pox
1. Eliminate the source of bacteria. After falling leaves in autumn, the fallen leaves and diseased ears are removed and buried deeply, and the old bark scraped off should be burned immediately. When the grape bud scales sprout in spring, spray Baume 3-5 degree stone sulfur mixture + 0.3% pentachlorophenol sodium. 2. Strengthen the cultivation and management. Combined with summer pruning, carefully cut off diseased branches, diseased leaves and diseased fruit.
2018-09-11 -
Sunshine disease occurred in high temperature grapes.
Courtyard grape pruning is usually carried out in the growing period, which can help to adjust the relationship between growth and fruit, control shoot growth, improve yield and quality, and obviously improve the ornamental effect of grape. Its summer pruning can take the following 8 measures: wipe buds: when buds grow to 2 cm to 3 cm, erase weak buds, branched mouth buds and.
2018-09-11 -
Measures to improve the Commodity of Grape products
1. Ear fixing: leave a good ear with correct spike shape, uniform fruit setting and drooping posture. 2. Panicle shape arrangement: on the basis of conforming to the natural shape of varieties, the panicle shape of the same varieties in the whole garden should be basically the same. 3. Elongated inflorescence: for varieties with higher fruit setting rate, when the inflorescence is 7-10 cm long.
2018-09-11 -
How to determine the row spacing of grape plants
The planting direction of grape generally chooses the north-south direction is better, can better accept the light, but also make the shelf surface basically vertical to the dominant wind direction of the growing season, which can reduce the wind damage. However, if it is limited by the land, it can also be planted in the east-west direction. Row spacing according to the choice of cultivation frame, the row spacing of the hedge is 2 to 2.8 meters, the shed.
2018-09-11 -
How to prevent grapes from producing small fruits
Small grapes are formed by seed abortion. It is observed that the number of mature seeds of small fruit is equal to that of large fruit, but the seeds of small fruit are all in the tender stage, small but without kernel. If there is a mature seed in the fruit, the fruit can be slightly larger; when there are 2 mature seeds, the fruit can grow to medium size.
2018-09-11 -
How to bag grapes is the best
In order to enhance the competitiveness of grape market, it has become a consensus of growers to popularize and apply bagging technology on grapes, but how to maximize the benefit of bagging? Before bagging, prepare to trim the spike one week before flowering, remove the accessory spike and 1-8 branches at the base of the main axis, and the spikelet should be reduced or not removed.
2018-09-11 -
What medicine does grape spray spike effect best before bagging?
The preparation before bagging is to trim the spike one week before flowering, the large spike should remove 8 branches of accessory spike and the base of main axis, and the spikelet should not be removed or less; the florescence should be pinched off and the tip of spike should be removed, and the fruit and vegetable grains should be started two weeks later, and the fruit should be stabilized immediately and end before the rainy season. The method of bagging is to open the paper bag by hand.
2018-09-11 -
Grape bagging technology
In order to enhance the competitiveness of grape market, it has become a consensus of growers to popularize and apply bagging technology on grapes, but how to maximize the benefit of bagging? Before bagging, prepare to trim the spike one week before flowering, remove the accessory spike and 1-8 branches at the base of the main axis, and the spikelet should be reduced or not removed.
2018-09-11 -
How to treat the rotten grapes?
According to your description, it may be grape white rot, which is one of the most important grape diseases, especially in rainy years, which is often prevalent with anthracnose. Grape white rot can damage ears, branches and leaves. After being invaded, the ear and rachis become light brown, water-immersed rot, the whole ear or part of the spikelet.
2018-09-11 -
Mango blossoms are early and fertile.
In order to cultivate mango with high yield, the varieties should be selected first. After the seedlings are grafted and survived, the management should be carried out in time, such as expanding holes, preventing diseases and insect pests and so on. Scientific and rational fertilization is an important link related to high yield and good fruit quality throughout the whole tree age cycle. Note: 1, young mango tree root system is small, fibrous root.
2018-09-11 -
Chemical control of mango stem rot
1 site condition Meizhou is located in the mountainous area of eastern Guangdong, with annual rainfall of 1800mm, annual average temperature of 21 ℃, annual sunshine hours of 2031 hours, and extreme minimum temperature of-2.6 ℃. The planting land is sloping land, sandy soil, thin soil, pH value 4.5, organic matter 1.65%, total nitrogen 0.083mg/kg, hydrolyzed nitrogen 112mg/kg, phosphorus pentoxide 0.
2018-09-11 -
Management of bagged mango seedlings in winter
Control methods: 1. According to the damage characteristics of the larvae, capture the larvae. 2. The adults can be trapped by black light. 3, chemical control: can be killed by the enemy, trichlorfon, dichlorvos and so on.
2018-09-11 -
Control methods of grape diseases in rainy season
Grape downy mildew, white rot, anthracnose and other diseases have a high incidence in summer. Downy mildew can lead to fallen leaves, withered branches, rotten fruit and even death. Therefore, the China Agricultural Technology Network reminds you to strengthen the management of vineyards and prevent diseases in time in the rainy summer season. 1. Clear the garden: if in the vineyard.
2018-09-11 -
Manage the loquat tree after Xiehua in early spring
First, apply stable fruit fertilizer. When the young fruit of loquat appeared after flowering, stable fruit fertilizer was applied, mainly instant nitrogen, phosphorus and potassium complete fertilizer. For fruit trees more than five years old, 1.5 kilograms of nitrogen, phosphorus and potassium compound fertilizer was applied to each tree, or 40 kilograms of mature human and animal manure water was retted. Second, prevention and control of diseases and pests. When the young fruit appears after the loquat blossoms,.
2018-09-11 -
Field management of pollution-free mango
The first plant can blossom and bear fruit in all seasons of the year. The first plant will blossom from late February to late March, and the fruit will mature from late June to late July; the second plant will blossom in late April and mature in late July; the third plant will bloom from late July to early August and the fruit will mature in late November; the fourth plant will blossom in late September and mature in March-April of the following year. Two.
2018-09-11 -
How to fertilize mango fruit trees
Fertilization of mango fruit trees should be based on the principle of reasonably adjusting the contradiction between vegetative growth and reproductive growth. It is necessary not only to promote flowering and fruiting in the current year and to control the vigorous growth of summer shoots, but also to promote the emergence and growth of autumn shoots, so as to lay a good foundation for a bumper harvest in the second year. The type of fertilization is still dominated by nitrogen, phosphorus and potassium fertilizer, especially.
2018-09-11 -
How to apply fertilizer to autumn mango
Fungal diseases. At present, six kinds of pathogens causing mango soot disease have been found in China. In order to harm leaves, shoots and fruits, affect leaf photosynthesis and fruit appearance. Prevention and control methods: first, reasonable close planting and pruning to keep the crown ventilated and transparent. Second, focus on the control of aphids, shell insects, flat-beaked leafhoppers.
2018-09-11 -
Control of loquat soot disease
Loquat gray leaf spot is the main disease of loquat, which mainly harms leaves and fruits. The initial lesion of the leaf showed a yellowish dot, and then expanded rapidly, forming an irregular large spot, with an obvious black band on the edge. The fruit is damaged, forming a round, purple-brown spot, which will soon be sunken and grow on the spot in the later stage.
2018-09-11