There are many ways to prevent and cure vegetable diseases. It is better to use the most efficient and cost-effective method. Learn the most effective prevention and treatment methods for shed vegetable diseases with the Chinese pesticide net Xiaobian:
First, the best method for coping with gray mold: Solanaceous vegetables can be controlled by spray of cyprodinil (He Rui) and Schwarzkopf (pyrimethamine) 1000 times. The melon vegetables can be sprayed on the basis of the sputum of the sputum nitrite (School), using 800 times of Duowei (DuPont) or Nicotinamide (Kaiser).
The old pesticides for controlling gray mold, such as procymidone, iprodione, and vinyl bacteria, have been used for many years, and the drug resistance is obviously enhanced. It is used to control gray mold, and even if it is used in an amount, the effect is not satisfactory. Especially after the outbreak of gray mold, it is necessary to switch to the new ingredient for prevention and control. It is recommended to use environmentally friendly green bio-pesticide .
The low temperature and high humidity environment in the shed is the main cause of the outbreak and prevalence of gray mold. Therefore, in the management, we must first do a reasonable watering, timely ventilation, and reduce the humidity inside the shed.
Gray mold is easy to infect from the flower that is defeated, so the prevention of gray mold must first prevent infection from the flower. Pick up the residual flowers of the fruit in time and clean up the shed.
The amount of spores of gray mold pathogen is large, and it is difficult to be comprehensive and thorough in the case of spray control, and the two can be smoked and sprayed. Smoked tobacco can be cleaned with sclerotia, but pay attention to the amount and time spent on smoking, especially on beans and eggplant. Melons, tomatoes, and peppers can be used in 200 grams of acres (667 square meters), smoked tobacco for 8 to 10 hours; beans and eggplants on the acres (667 square meters) with 200 grams of medicine, smoked smoke for 6 to 8 hours.
Second, the best way to deal with dead vegetables: spicy (sweet) pepper can be used 1 card (10 g / pack) plus Jin Lei 35 grams of Jiafuxing 1 package (2 g / pack) water 30 kg irrigation; cucumber available benzene Ether methyl carbazole (Shigao) 1000 times liquid mixed with flavonoid nitrile (Shiloh time) 1500 times liquid root irrigation.
Phytophthora root rot is the most important disease causing spicy (sweet) pepper, but behind the use of Plex plus DT (succinated copper) or metalaxyl plus carbendazim, the control effect is poor, First of all, it should be seen that the drug is not symptomatic, and it is likely that the resistance of the bacteria is enhanced. In this regard, the selection of two pesticides for the treatment of epidemics and the addition of Fuxing, can enhance the efficacy of the drug, and also cure the various diseases such as the Pythium root rot.
Spicy (sweet) Phytophthora root rot, mainly for the spicy (sweet) pepper stalk base, initially hot watery, and later into "black stalk".
The disease develops rapidly, and in the case of controlling the humidity in the field, it is also promptly inspected and timely prevented. At the same time, this is one of the reasons for the combination of two agents for prevention and treatment.
The main diseases that cause grafted cucumber dead trees are:
Pseudomonas sp. root rot in the rhizome: When the disease begins, the leaves of the plant appear wilting in the daytime, and can recover in the evening or on cloudy days. After a few days, the lower leaves begin to yellow and gradually develop upwards, leading to the development of melons on the plants. bad. Common symptoms in the shed are: when the grafted seedling rootstock is made of black seed pumpkin, the base of the stem near the ground appears to be brown and rot, causing the plant to die. There was no water immersion and rot at the base of the stem, and the vascular bundle of the plant did not brown. However, the roots of the capillary roots were found to be brown and rot, and the main root and the lateral roots also became light brown. In severe cases, the roots all turned brown or Dark brown.
Bacterial blight above the graft interface: Bacterial wilt infested cucumber leaves, infested from the leaf margin, resulting in a "V" shaped large lesion, light brown, late lesions are easily broken, dense black spots on the lesions. When the petiole, melon vine or stem base is damaged, the lesion is oil-immersed, elliptical to fusiform, yellowish brown, sometimes overflowing with amber gel. When the disease is serious, the stems are white and dry, rotted and broken. The blight is mostly developed from the surface of the stem to the inside. In the late stage of the disease, the longitudinal division of the stem base is chaotic and dry. The disease is also the main cause of the rotten head of the cucumber.
Under the premise of using phenyl ether methylcyclazole (Shigao) 1000 times liquid and 1500 times solution of chlorflunan to prevent the spread of the roots, the pesticide net is recommended to be sprayed or smeared with chlorothalonil and Ami.
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