-
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
-
How to Treat Jujube Trees with Jujube Witches' Broom Disease? A Detailed Guide to Surgical Treatment Methods
1. Basis. The pathogen of jujube witches' broom disease is a mycoplasma-like organism, which mainly lives in the phloem of jujube trees and is conducted through the tree body via the sieve tube tissue. In winter, the mycoplasma-like organism moves from the aboveground parts to the roots to overwinter, and in the following spring flows back to the branches and trunk with the sap. On this basis, surgical treatment can effectively eliminate the mycoplasma-like organism. 2. Methods (1) Trunk ring sawing. Before leaf fall of the jujube tree and before sprouting the following year, starting from a point 40 cm above the ground on the trunk, use a saw to cut ring-shaped grooves in the trunk of the jujube tree. The requirement is to saw through the cortex, but not to damage the cambium. According to the severity of the disease,
-
Processing Methods and Technical Key Points for Fresh Peach Nectar
Pulpy juice is also called puree-style juice, with the commercial name "nectar". Fresh peach nectar is one of the most popular juice drinks on the market today. Its process flow is: 1. Raw material selection: Select fully ripe, fresh peaches with good flavor, abundant juice and free from pests and diseases. Peaches that are not fully ripe need to undergo after-ripening. 2. Raw material pretreatment. 1) Cleaning. After the raw materials are selected, wash and scrub them with clean water to remove the fuzz. After cleaning, rinse them in a 1% hydrochloric acid solution or detergent solution to remove pesticide residues, then rinse again in clean water and drain.
-
How to keep pears fresh for storage? Master these methods to store them longer
(1) Raised-bed pit storage method. This is a main storage method used in the Huangxian Changba pear producing area. Before harvesting the pears, choose between-row spaces in the orchard with good ventilation, cool and dry conditions, and a low water table. Build raised beds running north-south, with a bed width of 1.5 m to 2 m; the bed length depends on the storage quantity. The bed surface should be about 10 cm above the ground, slightly higher in the center and slightly lower on both sides, with ridges about 15 cm high built up around the perimeter. Spread a layer of fine sand 5 cm to 10 cm thick on the bed surface. At the four corners of the bed ridges and along the two long sides, drive a wooden post every 750 mm, with a post height of 750
-
Experimental Methods and Results Analysis for the Control of Jujube Fruit Shrinkage Disease
In recent years, jujube fruit shrinkage disease has become increasingly severe. Jujube fruit generally becomes affected at the white fruit stage, and often a large number of fruits drop within a few days. In ordinary years the incidence rate is 5%-8%, and in severe cases the proportion of diseased fruit reaches over 30%. Diseased fruit tastes bitter and is unfit to eat, seriously affecting the quality and yield of jujube fruit. Because opinions differ from place to place on the pathogenic factor of this disease, and it was discovered in our county only just over 10 years ago, there is still no successful experience in controlling it. After consulting materials from many sources and conducting field observations, the fruit tree station formulated an experimental plan for the control of jujube fruit shrinkage disease and achieved fairly good results.
-
How to Improve Jujube Fruit Quality? A Detailed Guide to Practical Methods
Improving jujube fruit quality is hard to achieve by relying on just one or two measures; a comprehensive set of technical measures is needed. (1) Develop superior varieties. New jujube orchards must choose superior varieties. For existing low-yield, poor-quality jujube orchards, top grafting to replace with superior varieties is the fundamental measure for improving fruit quality. (2) Rational fertilization. Organic fertilizer should be the main input, with a moderate amount of nitrogen, phosphorus and potassium chemical fertilizers. Nitrogen fertilizer has already received sufficient attention, but awareness of phosphorus and potassium fertilizers, especially potassium fertilizer, is insufficient. Excessive nitrogen application causes
-
Control Methods and Technical Key Points for the Jujube Inchworm
Also known as the jujube looper or "arched-back worm," it is the "number one enemy" harming jujube trees. Its larvae damage young buds, young leaves, and flower buds, and spin silk that tangles and hinders leaf expansion; in severe cases they can strip all the leaves, while also causing heavy damage to crops such as apple, pear, peach, potato, and chili pepper. The jujube inchworm begins to emerge from the soil in mid-March, and when the jujube buds begin to swell, the larvae start hatching and damaging the jujube buds. Its main biological characteristics are: 1. One generation per year, overwintering as pupae concentrated in the surface soil around the root collar of jujube trees;
-
Pruning Methods and Technical Key Points for Flowering Peach During the Growing Season
In northern gardens, the flowering peach (Prunus persica) is an indispensable ornamental tree species for early spring. Its tree form is graceful and its flowers are charming, giving an excellent ornamental effect. However, it grows vigorously and produces many branches, and its canopy becomes dense, causing excessive nutrient consumption and poor ventilation and light penetration, which is unfavorable for branch ripening and flower bud differentiation. Therefore, it should be timely shaped and pruned, especially pruned during the growing season (also called summer pruning), which plays a rather important role in the cultivation and management of flowering peach. Summer pruning can reduce ineffective growth, save nutrients, improve light conditions, strengthen nutrient synthesis, and
-
Symptom Identification and Control Methods of Peach Shot Hole Disease
Peach shot hole disease is the most common leaf disease on peach trees. It occurs in peach-producing regions worldwide. It includes three types: bacterial shot hole, mildew spot shot hole, and brown spot shot hole. Among them, bacterial shot hole is the most common and is widely distributed in peach-producing regions across the country. Infection of peach trees by this disease can cause a large number of leaves to develop holes and drop off, branches and shoot tips to die, severely weakening tree vigor, affecting flower bud differentiation, and causing huge losses. In addition to harming peach trees, the three types of shot hole disease also harm stone fruit trees such as plum, apricot, and cherry. [Symptoms] Detailed
-
Key Points and Methods of Peach Tree Planting Technology Explained in Detail
I. Orchard Establishment 1. Site selection: relatively concentrated and contiguous, with suitable climatic and soil conditions, moderate altitude, slope and aspect. Peach trees like sunlight, so a south-facing site is best, with ample light. The slope should not be too steep, generally below 25 degrees is preferable. The hilltop is best left for afforestation; choose the foothill zone. Deep, fertile and loose soil is best, and soil depth is the most important factor. Fertility is relatively easy to improve. Existing forest land is best preserved, and clearing forest to plant fruit trees should be avoided as much as possible. 2. Comprehensive planning: integrated consideration of mountain, water, orchard, forest, roads, farming, forestry and animal husbandry
条件筛选