Sixth, how to control tomato leaf mold disease: (1) broad-spectrum fungicide: such as chlorothalonil (merken), fluhexin (iprodione), thiophanate-methyl and so on. The advantages of such agents are: broad spectrum prevention, safety, low prices, good preventive effect. The disadvantage is: poor treatment. It should be used before the onset, or with the treatment of prominent drug use. (2) azole drugs: such as myclobutanil (cents), triflumizole (Teflon), difenoconazole (World Health), the advantages of significant therapeutic effect, low dosage, strong absorption, Long-lasting, the disadvantage is: the amount of the general assembly to curb the growth of crops. If more than three consecutive doses, it is likely to cause tomato leaves smaller, harden, brittle, black and so on, it should be used with caution, especially in the cold period of winter to use less, except for the world height. In the use of such agents can be used with some growth regulators, such as brassinolide (Shi Taiyuan, Yun-120, etc.), cytokinin and other use, in order to reduce its inhibit tomato growth side effects. (3) antibiotic agents: such as kasugamycin, polymyxin, agricultural anti-120, the advantages of these agents are: safe, broad-spectrum, strong absorption, the prevention effect is outstanding, but the treatment effect is poor. Based on the characteristics of the aforesaid medicaments, the following medicaments should be used when preventing and controlling tomato leaf mold with medicaments: when there is no spot on the leaf or the incidence is less than 5%, broad-spectrum bactericides, or world-scale, or antibiotic- Can also be mixed use. When the incidence is higher than 5%, and there is a trend of spread, the azole fungicide should be used. Of course, you need to use with brassinolide, cytokinin and other plant growth regulators. When the disease is particularly serious, the azole drugs can be mixed with broad-spectrum drugs or antibiotics to prevent and treat the disease.
Seven, amoxicillin: azoxystrobin, amoxicillin bactericidal spectrum is very broad, the four major types of pathogenic fungi: Ascomycetes, Basidiomycetes, half-know bacteria and oomycetes in most of the pathogens All valid. A drug treatment of multiple diseases is the prominent features of Amistar, and the role of the existing fungicides different ways, high activity, the current resistance of bacteria to amisiaca weaker. Its strongest advantage is to prevent protection, not its therapeutic effect.
Its preventive and protective effect is ten times to several times that of ordinary protective bactericide, and its therapeutic effect is almost not much different from that of ordinary systemic therapeutic bactericide. Therefore, to give full play to the effect of amoxicillin, must be used before or during the onset of disease. When the incidence of severe use of amoxicillin, disease prevention and other systemic fungicide will not be significantly different. In order to give full play to the effectiveness of Amistar for disease prevention and production enhancement, it is most appropriate to use Amistar for the following three periods based on the experiences of different places. The first is to use seedlings at the seedling stage; the second is at the pre-flowering stage; Third, the early fruit growth. Adequate water spray is also an important factor in ensuring the effectiveness of Amistar. In Shouguang, a greenhouse of 50-60 meters in length should be sprayed with at least 4 sprays of water (120 pounds) at adult plants (tomatoes, cucumbers, eggplants, bell peppers) and 6-7 sprays of water at 80 meters of sheds. The use of concentrations are 1500 times the liquid (add 1 pack of water per atomizer Amistar), each spray interval of 10-15 days, with a spray 2-3 times. Amitage general single, we must pay attention.
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