Occurrence and control forecast of diseases and insect pests in Flos Lonicerae

I. Current occurrence of honeysuckle diseases and insect pests According to my station's systematic investigation on May 29: honeysuckle aphid investigation has not been found. The average rate of infected plants of red spider was 53.3%, the highest was 60.0%, the average rate of infected leaves was 15.7%, the highest was 31.3%, the average number of veneers was 31.3, the highest was 38.0, the average mite index was 4.08, the highest was 5.25, the average rate of infected plants of brown spot was 46.7%, the highest was 60.0%, the average rate of infected leaves was 7.3%, the highest was 10.0%, the average disease index was 1.92, the highest was 2.75. The average disease rate of powdery mildew was 30.0%, the highest was 40.0%, the average disease leaf rate was 3.7%, the highest was 5.0%, the average disease index was 0.92, the highest was 1.25. From April to May 2012, there were many rainy days, which was conducive to the occurrence (epidemic) of pests and diseases. At present, the occurrence and harm of pests and diseases of honeysuckle showed a rapid upward trend. II. Occurrence Trend According to the comprehensive analysis of factors such as the current occurrence of honeysuckle diseases and insect pests, future weather forecast, overall layout of honeysuckle and resistance level of varieties, farmers 'control technology, etc., it is estimated that in 2012, honeysuckle aphids will occur more frequently (grade 4), with an occurrence area of 80,000 mu times, red spiders will occur more frequently (grade 4), with an occurrence area of 80,000 mu times, powdery mildew will occur more frequently (grade 3) in general, and moderately (grade 4) in some parts, with an occurrence area of 60,000 mu times. Brown spot disease occurs moderately (grade 3), with an occurrence area of 50,000 mu times. Other diseases and insect pests occurred lightly (grade 1-2), and the occurrence area was 20,000 mu times. Third, the appropriate period of control At present, most honeysuckle plantations red spider, powdery mildew, brown spot disease and so on have reached the control index, must immediately carry out chemical control. Brown spot and powdery mildew were controlled by using medicine at the early stage of disease, and the control index was 3.0% of diseased plants. 4. Control methods 1. Agricultural control: select disease-resistant varieties, strengthen cultivation and management, reasonably plant closely, shape and prune branches, ventilate and transmit light; apply fertilizer scientifically, increase phosphorus and potassium fertilizer, improve plant disease resistance, pay special attention not to apply too much nitrogen, so as not to plant dense growth and aggravate disease degree. 2. Chemical control: Honeysuckle is a dual-purpose plant for medicine and food. Special attention must be paid to food (medicine) safety. It is forbidden to use highly toxic pesticides in production. Chemical control agents must be used under the guidance of technicians from plant protection departments and agricultural technology departments. Recommended pesticides and dosage for aphid control: 25% Pymetrozine WP 24g per mu; or 40% Pymetrozine WG 12g per mu; or 10% Imidacloprid WP 30g per mu. Recommended pesticides for controlling red spiders: 15% pyridaben emulsifiable concentrate 1000 times; or 20% ovamijing wettable powder 2500 times; or 20% abamectin wettable powder 2000 times. The recommended pesticides and dosage for controlling brown spot are: 80% thiophanate-methyl WP 100g per mu, or 70% mancozeb WP 100g per mu. The recommended pesticides and dosage for controlling powdery mildew are: 25% triadimefon WP 100g per mu or 50% hexadimefon WDG 9g per mu. Click to get more honeysuckle planting technology Click to get more herbs planting technology