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
Ultra Plantâ„¢ Grow Light offers One Chip Technology aimed to meet your indoor growing expectation such as improve plants' quality, increase yield, or better the margin, etc., all for helping you realize a higher return on your crops.
Ultra Plantâ„¢ Grow Light is combined our advanced All-In-One technology with patented optical design and customized light full spectrum supported from our experienced LED engineers, plant specialists and other partners working on horticulture.
From Ultra Plantâ„¢ APP, you are able to schedule the growing process including photoperiod, brightness and spectral in advance. The lighting system will help you grow smarter, easier and better.
Ultra Plantâ„¢ is the most versatile horticultural grow lighting fixture for indoor plants with flexible full spectrum, brightness control and uniform, wider light distribution, suitable for top lighting of all types of crops. No matter it applies to anywhere for any crop, Ultra Plantâ„¢ can do perfect work for you.
Commercial Grow Light,Commercial Led Grow Lights,Commercial Greenhouse Led Grow Lights,Best Commercial Led Grow Lights
Feton Corporation , https://www.ultraplantled.com