-
Detailed Explanation of the Occurrence Patterns and Control Techniques of the Jujube Leafroller
The jujube leafroller belongs to the family Tortricidae, order Lepidoptera. The jujube leafroller damages the leaves, flowers, and fruits of jujube trees, seriously affecting the yield and quality of jujube. The jujube leafroller has a single feeding habit, only damaging jujube trees and wild sour jujube, with larvae feeding on jujube leaves, flowers, and fruits. It produces 3 generations per year, overwintering as pupae in cocoons under old cracked bark and in clods of soil around the trunk. In the following year, eclosion begins in late March, with the peak of eclosion in early April; adults are strongly phototactic, and eggs are laid singly on smooth twigs and leaves. The first-generation larvae hatch in early May (before the Beginning of Summer)
-
Jujube leaf roller
Also called the jujube leaf-rolling worm, its larvae bite and eat jujube leaves, jujube flowers and fruit, and can also bore into fruit clinging to leaves, causing fruit drop and greatly affecting yield. This insect overwinters as a pupa in cracks in the bark of the main trunk of the jujube tree, and from mid-March to late April the overwintering pupae begin to emerge. Occurrence periods of larvae of each generation: first-generation larvae, mid-April to late June, bite and eat young buds and tender leaves; second-generation larvae, mid-June to early August, damage jujube flowers, leaves and young fruit; third-generation larvae, late July to mid-October, especially damage leaves, and then bore into fruit. Adults hide during the day
-
Timely Control of the Rice Leaf Roller Is Essential and Cannot Be Delayed
The rice leaf roller is one of the major rice pests in our province. Its larvae damage the leaves, turning rice leaves into a mass of withered white. Especially when it attacks at the booting or heading stage, it will cause a sharp decline in rice yield. This pest has seven generations a year, and the second-generation larvae are the most numerous and cause the most serious damage to early rice. If control is not timely, it will break out in a major outbreak during the heading period, causing incalculable losses. For forecasting the rice leaf roller, the appropriate control timing should be determined based on the forecast of the occurrence period. Based on past conditions, investigation should begin 4 days after the peak of the moth flight
-
Can emamectin benzoate control the rice leaf roller?
Emamectin benzoate is a new type of high-efficiency semi-synthetic antibiotic insecticide synthesized starting from the fermentation product avermectin B1. It has the characteristics of biological pesticides such as ultra-high efficiency, low toxicity (the formulation is nearly non-toxic), no residue, and no pollution. Compared with avermectin, its insecticidal activity is first increased by 1-3 orders of magnitude. It has extremely high activity against the larvae of Lepidoptera insects and many other pests and mites. It has both stomach poison action and contact action, and has very good effects at very low doses (0.084~2g/ha), and in the process of controlling pests it is harmless to beneficial
-
What pesticide gives the best control effect against older larvae of the rice leaf roller?
Chlorpyrifos and abamectin-monosultap are effective agents for controlling the rice leaf roller, but they must be applied during the 1st-2nd instar young larval stage (at this stage the rice leaf roller has not yet rolled leaves and caused damage, or has just begun rolling the leaf tips and causing damage), when the rice in the field has just begun to roll leaves. For rice leaf roller larvae of the 3rd instar and above, on the one hand they are protected because they are wrapped inside the rice leaves, and on the other hand they are insensitive to nereistoxin-type pesticides such as monosultap and to organophosphorus pesticides such as chlorpyrifos, methamidophos and monocrotophos, so the control effect after spraying is poor. Relatively speaking, older rice leaf
-
A Detailed Explanation of the Occurrence Patterns and Control Methods of the Jujube Leafroller
The jujube leafroller belongs to the order Lepidoptera, family Tortricidae. Common names include leaf-tying worm, leaf-sticking worm, leafroller, and so on. It occurs and causes damage to varying degrees in most jujube-growing areas nationwide, and is one of the major pests of jujube trees. I. Damage characteristics: The jujube leafroller uses its larvae to spin silk and damage buds, leaves, flower buds, flowers, and fruits. Especially the third-generation larvae, which are in the fruit-coloring period, often glue jujube leaves and jujube fruits together with thin silk, and within this shelter gnaw at the jujube skin and flesh at the fruit stalk, causing a large number of fallen and rotten fruits. II. Life habits: In Shandong, He
-
Occurrence Patterns and Control Methods of the Euonymus Leafroller Moth
The Euonymus leafroller moth belongs to the order Lepidoptera, family Zygaenidae. Its larvae damage the tender leaves and shoots of host plants, feeding on the foliage; in severe cases they strip the branches bare, or even cause entire stands to wither and die. In the Jining region, the Euonymus leafroller moth has one generation per year and overwinters as eggs on the host's branches and shoot tips. The overwintering eggs mostly hatch in mid-to-late March; in sheltered, sunny spots they can hatch 5-7 days earlier, and the hatching peak generally occurs around March 20. A single egg mass can finish hatching in 2-3 days, which coincides with the emergence of new leaves on the Euonymus. From late April to early May, the mature lar
-
How to control leaf roller moths? A full breakdown of practical methods
Control methods for leaf roller moths
-
What are the damage symptoms of the jujube leafroller? A quick guide to identification
Damage symptoms of the jujube leafroller
-
Detailed Analysis of the Occurrence Patterns of the Jujube Leafroller
Occurrence Patterns of the Jujube Leafroller
条件筛选