Peas are spring-sown or autumn-sown perennial climbing herbaceous plants. The roots of peas are deep, slightly drought-tolerant and not resistant to moisture. The sowing or seedlings are poorly drained and easily rotted. The drought is poorly fertilized, and it is easy to form empty pods or pods. So, what is the difference between pea brown spot and brown streak? How to prevent it?
Pea brown spot
The main symptoms of pea brown spot:
Mainly harmful leaves, stems, pods. The leaf disease produces a round hazel to dark brown disease class with obvious edges and a black spot with a needle tip on the lesion. Stem infection, lesions brown to dark brown, spindle-shaped or elliptical, slightly concave. The cause of the disease is conidia or mycelium attached to the seed or overwinter on the diseased body. Seeds are sown, and the seedlings are infected. The bacteria are spread by rainwater or irrigation water, 15°C-20°C and high humidity environment. Onset.
Control method:
(1) Heavy-duty and non-legume vegetables should be rotated for 2-3 years; at the same time, seed disinfection should be carried out, pre-soaked in cold water for 3-5 hours, then immersed in 50 °C warm water for 5 minutes, then cooled and dried. sowing.
(2) Chemical control: spray 50% benomyl WP suspension 800 times solution, 70% methyl thiophanate WP 500 times solution, 75% chlorothalonil WP 600 times solution at the beginning of the disease, every 7 Once a day, even spray 2-3 times.
Pea brown streak
Main symptoms of pea brown streak
Mainly harmful leaves, stems and pods. The leaves are infected with irregular lavender spots. Under high temperature and high humidity conditions, the lesions spread rapidly and spread over the entire leaves. The leaves turn yellow and twisted and die; some are dark brown irregular wheel spots, and the central necrosis Produces black dots. The cause of the disease is mainly over the winter on the seeds, spread by wind and rain. Seeding too early or suffering from low temperature chilling, or soil viscosity, humidity is too high, or partial application of nitrogen fertilizer, plant growth, are easy to develop.
Control method
(1) It is best to carry out rotation with non-legume crops for more than 3 years; seed disinfection should be carried out, soaked in warm water for 4-5 hours, then transferred to 55 °C warm water for 5 minutes, then placed in cold water to cool, and dried. sowing.
(2) Appropriate close planting and increase of potassium fertilizer.
(3) Chemical control: Spray 50% mixed sulfur suspension 500 times solution or 75% chlorothalonil WP 600 times at the beginning of the disease, once every 7 days, continuously spraying 2-3 times.
More pesticide knowledge , please pay attention to China Pesticide Network
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Important Caution:
1． Before use the glue gun, check if the plug cord into electrical outlet properly;
2． When glue gun in first use, the heating element will have small smoke, it is normal situation, but the smoke will disappeared after 10 minutes;
3． After power, not for a long time in standby mode(not longer for 20 minutes), when the suspension of use, unplug first.
4． Avoid to use the glue gun under very hot or very cold environments.
5． Better not work under direct cold wind blowing, it will reduce efficiency and loss power
6． When in continuous using, do not press the trigger with great pressure, and try to squeeze out the un-melted glue, it would damage the glue gun
7． Not applicable for bonding heavy objects or objects needed strong adhesive
8． The quality of glue stick will directly influence the glue gun function and sticking objects quality;
9． If the power cord is damaged, do not replace it by yourself, must ask for professionals to replace it.
10． This tools must b e placed in its position when not in use. And storage before the tools complete cooled.
11． Be careful when using any other electrical appliance with flammable material.
12． Not applicable for a long time in the same place.
13． Do not use an explosive gas atmospheres.
14． Note that heat may be the line of sigh, combustible materials.
15． Do not leave equipment unattended when switched on.
16． This appliance is not intended for use by persons(including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
17. Children should be supervised to ensure that they do not play with the appliance.
Using methods
1. Glue gun using voltage is 110-220V AC,50/60Hz;
2. Tip gun forward on stand and place a piece of cardboard under the nozzle
3. Use 7-8mm (mini trigger glue gun), 11-12(big trigger glue gun), insert glue sticks through
tunnel at back of gun
4. After power, wait for 5-10 minutes to allow glue to soften
After glue softens, squeeze trigger to feed glue through glue barrel. Excessive force will damage glue gun. Put down nozzle after work, disconnect the power plug20W Glue Guns, 20W Mini Glue Gun, Regular Glue Gun
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