(2) Before the end of fall and winter, when the soil is buried in the cold, the infected branches may be cut off so that the bacteria cannot come from the rack.
(3) Before the grapes begin to color (or from the beginning of July), there must be a special person to inspect every day, and the small number of disease ear (along with the landing) should be cleaned up and carried out outside the park to be destroyed.
(4) Carefully prevent leaf diseases such as downy mildew, protect good tree vigor, and enhance disease resistance.
(5) Strictly control the growth of weeds, the best grass under the plane, timely drainage in the rainy season, reduce the humidity in the field, do a good job in summer cuts, ensure that the plane ventilation and light.
The pesticides used in the control of white rot in grapes mostly form a layer of film on the surface of the ear (fruit pieces), which closes tiny wounds and makes the infection more difficult. There are mainly: Bordeaux mixture (1:0.5:200), 78% Cobo 500 times, 12% green milk copper 800 times, 75% Dakkonin 600 times, 80% of the 600 times. Although 40% of Fuxing's EC is 2000 times higher and 10% is 1000 times higher than the previous one, although it has certain bactericidal action, it is difficult to play an effective role because of the short course of white rot, which lasts only 4 days. Spraying starts from 7 to 10 days before flowering, and once every 15 days (pesticides for controlling downy mildew are sprayed on June 15th and July 15th). Focus is placed on the protection of the ear, and spraying is stopped 15 days before picking.
JRT OEM Digital Laser Range Finder can measure faster, easier, and more effectively! Our Professional R&D team has over 16 years of experience on the laser and measurement field , so we can supply perfect OEM/ODM service according to user requirement ,and we have made out the mini size module in the world.
The handheld laser distance measurer can measure distance,area,volume and pythagorean, and can switch to meter/feet/inch mode as you like.
Specially, there is three best-sale styles:
* Mini: D30 with our mini module U81 in it achieved the smallest size Laser Distance Meter in the world, which outlook is the same as a key,quite portable and cute. USB chargable design.
* Bluetooth: Diy Laser Range Finder With Bluetooth has been used to measure distances accurately in the both daily usage and industry application. The handheld laser distance measurer is widely used in variety areas, like project surveying, construction measuring, railway application etc.
* Longest: 150m equipped with a precise,easy- to-read digital LED display, which metal case brings you great hand feel.Power Supply: 2 x 1.5V AAA batteries.
Handheld Laser Meter,Handheld Laser Distance Meter,Laser Range Meter,Laser Distance Measurer
Chengdu JRT Meter Technology Co., Ltd , https://www.jrt-measure.com