In the early stage of nursery, there are blight and stagnation diseases, and there is downy mildew in the later stage(plug trays wholesale). 70% mancozeb WP 600-800 times solution or 77% copper hydroxide wettable powder 800-1000 times solution can be used. Or 20% morpholinium citrate copper (virus A) wettable powder 500 times solution, or 5% toxic water clearing agent 500 times solution, or 75% chlorothalonil WP 800 times solution alternately foliar spray(seedling trays wholesale), 7 ~ Spray once every 10 days, and prevent it 2 to 3 times.
(cheap 2 gallon pots for bamboo bulk buy)To prevent whitefly and aphids from hanging on the seedling bed(plastic nursery pots), you can also use a yellow plate with 0.5% emamectin benzoate emulsifiable concentrate 2000-3000 times liquid + 4.5% high-efficiency cypermethrin emulsifiable concentrate 1000-2000 times, or 1.8% avermectin EC 2000-4000 solution, or 20% chlorfenapyr suspension 1500-3000 times solution, or 10% imidacloprid WP 1500 times solution alternately sprayed(200 cell seed starter trays), sprayed once every 10 days, even spray 2 ~ 3 preventions and treatments.
The seedlings can be watered and drenched 24 hours before storage(plastic nursery pots manufacturers), and the excess water should be packaged immediately after flowing out from the bottom of the tray. In order to prevent excessive evaporation of water and loss of root activity during long-distance transportation, the seedlings can be treated with a preservative. Treatment with ethephon 300 μg / liter is conducive to slow seedlings and hair roots after seedling colonization; spraying sugar solution before transportation is beneficial to planting seedlings(plant start trays wholesale); spraying 0.04% fulvic acid solution once a day before transportation can be extended Seedling storage period is 2 to 3 days.
(cheap 2 gallon pots for bamboo bulk buy)In order to prevent the crushing or collision during transportation from affecting its quality(plastic nursery pots wholesale), the effect is good and protective packaging should be carried out. The packaged containers can be used in cartons, wooden boxes, plastic boxes, and the like. The container must have a certain strength to withstand certain pressures and bumps, and the container should have venting holes to maintain a certain ventilation and cooling(32 cell seed starter trays). Be careful not to damage the seedling roots when packing. There must be a certain gap when loading the car to prevent the seedlings from being damaged by heat.
First, the root sputum matrix is severely detached, the root system is not protected(wholesale nursery pots), resulting in prolonged seedling period after planting, and even affects the yield quality; second, the seedlings lose water and wilting, mainly caused by improper control of temperature and humidity during transportation. In order to ensure that the seedlings are transported to the cultivation field quickly and safely, they are generally transported by the whole vehicle. Summer should be carried out in the night without wind and rain; after the seedlings are loaded(200 cell seed starting trays), they are covered with tarpaulin to prevent the strong wind from blowing directly into the seedlings in the box.
(cheap 2 gallon pots for bamboo bulk buy)Chinese cabbage seedling disease has blight, rickets, downy mildew, and viral diseases(black plastic nursery pots). Most fungal diseases can be prevented by seed treatment, nursery room, and substrate disinfection. The main pests are cabbage caterpillar, diamondback moth, whitefly, aphid and so on. To control large pests such as Pieris rapae and Spodoptera, the 40-inch insect net can be installed in the ventilation window and entrance(72 cell propagation trays), or a buffer door can be installed to reduce the introduction of insect sources and prevent adult insects from entering the eggs.