Some time ago, I compiled a typical symptom and identification of a common cabbage disease. Many growers reflected that they would like to see the prevention and treatment of cabbage diseases. At the request of everyone, today's Xiaobian can definitely satisfy you. If you don't say much, come and watch the prevention and control of these cabbage diseases!
Tripping disease
Easy cause
Breeding in low temperature and high humidity environment, the seedbed bed is low, the number of rows is not good, and the water is flooded with seedlings.
Prevention reminder
The seedbed should be selected well, and the water should be filled once before the sowing. After the emergence, the water should be poured as little as possible; it should not be flooded with large water, and the watering should be carried out on a sunny day; the debris of the diseased plant should be cleaned up and destroyed.
Seed Precaution : 50% thiram, or 65% dexamethasone, plus 50% metalaxyl, are seeded at 0.3%-0.4% by weight of the seed.
Recommended agent (protective + therapeutic)
Early onset: 70% mancozeb + 25% pyraclostrobin; 70% Daisenlian + 72.2% propamocarb; 18.7% enoyl pyrazole.
White spot disease
Easy cause
The continuous operation is long, the terrain is low, the plants are weak, the fertilizer is insufficient, and there is continuous rain or heavy rain.
Prevention reminder
The bacteria are splashed by rainwater, which spread to the cabbage leaves causing the disease, pay attention to the prevention and prevention of rain before the rain; timely drainage after rain, enhance the resistance of the plant (timely fertilizer); timely clear the diseased plants, diseased plants, diseased leaves, Take away from destruction and deepen the soil.
Seed prevention : 50% carbendazim 500 times solution, after soaking for 1 hour, remove and wash.
Recommended agent (protective + therapeutic)
Before the onset (pre-rain prevention): 560g / L azoxystrobin and chlorothalonil; 68.75% famoxadone · manganese zinc;
In the early stage of the disease (enhanced prevention + prevention after rain): 75% chlorothalonil + 50% iprodione; 25% azoxystrobin; 25% propiconazole.
Brown spot
Easy cause
Heavy land, partial application of nitrogen fertilizer plots, low sorghum, heavy soil, poorly drained plots, etc.
Prevention reminder
Avoid the sowing in the hot and rainy season, pay attention to control the water and fertilizer in the rosette period; pay attention to the elimination of the water in the field; deepen the soil after harvesting, accelerate the disintegration of the sick body.
Seed prevention : 50 °C warm water soaking, or 0.4% of the seed weight of 50% carbendazim seed dressing.
Recommended agent (protective + therapeutic)
In the early stage of the disease: difenoconazole; pyraclostrobin; azole ether · Daisenlian.
Black spot
Easy cause
Early sowing varieties, planting density is too large, the terrain is low, often flooding, flood management and so on.
Prevention reminder
The bacteria spread by wind and rain, pay attention to the prevention and prevention of rain before the rain; the small water in the seedling stage, the water control during the lotus period, the water and fertilizer supply in the core period; the timely treatment of the diseased plant residue after harvest, with the destruction and deep soil.
Seed precaution : 50% iprodione, 50% procymidone or 50% carbendazim, seeded at 0.2%-0.3% by weight of the seed.
Recommended agent (protective + therapeutic)
Before the onset (pre-rain prevention): 50% procymidone + 50% captan; 50% thiram + iprodione; 705 mancozeb + 25% bromoxynil; early onset (intensified prevention after rain + Control): 560g / L azoxystrobin and chlorothalonil; 75% chlorothalonil + 10% difenoconazole; 75% sputum · tebuconazole.
Downy mildew
Easy cause
Seeding is too early, the density is too large, the field permeability is poor, the plants are mad, and the growth period is lack of fertilizer.
Prevention reminder
Morning seedlings, late seedlings, moderate seedlings; small water irrigation, timely drainage after rain; timely removal of the diseased plant residues in the field, and take away from destruction. Seed precaution: seed soaking in warm water, seed soaking with 72.2% propamocarb hydrochloride 500 times solution for 1 hour, or 25% metalaxyl seed dressing at 0.3% of seed weight.
Recommended agent (protective + therapeutic)
Before the onset: chlorothalonil + cymoxanil; chlorothalonil + azoxystrobin; mancozeb + cymoxanil.
In the early stage of the disease: chlorfenapyr hydrochloride + fluopyram (silver method); chlorothalonil + dimethomorph; pyraclostrobin.
anthrax
Easy cause
Seeding is too early, the density is too large, the field is poorly breathable, the terrain is low, the field is filled with water, the management is extensive, and the plant itself is weak.
Prevention reminder
The bacteria are spread by raindrops and rainwater. The high-temperature and high-humidity diseases are prone to pandemic. Pay attention to the drugs after the rain before the rain. Pay attention to ventilation and ventilation in the field, and timely accumulate water. After the harvest, remove the residuals of the diseased plants in the field and take them away from destruction.
Seed prevention : 25% bromoxynil, or 50% prochloraz manganese complex, seeded at 0.3%-0.4% by weight of the seed.
Recommended agent (protective + therapeutic)
Before the onset (pre-rain prevention): chlorothalonil + prochloraz; azoxystrobin + difenoconazole.
In the early stage of the disease (enhanced prevention + prevention after rain): azoxystrobin, or dexamethasone + difenoconazole; difenoconazole + prochloraz.
Brown rot
It is easy to cause the cultivation density is too large, the field permeability is poor, continuous rainy weather, and the water often accumulates in the field after the rain.
Prevention reminder
The bacteria spread by the wind and rain, pay attention to the medicine after the rain before the rain; remove the accumulated water in the field after the rain; remove the diseased plants and sick bodies in time, and destroy them in a concentrated manner.
Recommended agent (protective + therapeutic)
In the early stage of the disease: 30% diphenyl ether methyl propyl ring; 70% carbendazim + 68.75% oxazolone manganese zinc.
Root disease
Easy cause
The soil is sour, the terrain is low, the continuous rainy weather, the plant growth is too weak and so on.
Prevention reminder
Pay attention to the source of transmission (by rain, irrigation water, insects and agricultural tools, soil with bacteria, roots), pay attention to prevention and prevention of rain before rain, and strengthen pest control; apply lime to acid-soil land; Body and take away from destruction.
Soil disinfection: 20% quintonitrobenzene 1-2 kg of treated soil.
Recommended agent
According to the incidence of timely medication (irrigation): 25% metalaxyl + 705 pentachloronitrobenzene; 72.2% creamer + 70% sodium sulfonate; 155 carbendazim; fluazinam and so on.
Viral disease
Easy cause
Plants are weak, and management is extensive.
Prevention reminder
Use resistant varieties; control poisoning pests (aphids); do a good job in fertilizer and water management, and improve plant resistance.
Recommended agent (protective + therapeutic)
Prevention and control of poisonous pests: spirotetramat, imidacloprid, flonicamid, pyridone and the like.
From the early stage to the early stage: morpholinium hydrochloride, oligosaccharide, chain protein, amino oligosaccharide, lentinan, etc.
Black rot
Easy cause
Continuous cropping, applying unfertilized organic fertilizer, excessive water accumulation, poor permeability in the field, and serious occurrence of pests.
Prevention reminder
Bacterial diseases; pathogens are easy to wound, leaf hole water holes, insect wound infection, spread by rainwater, irrigation water, insects, pay attention to prevention and control after rain, and strengthen pest control; reasonable irrigation, timely drainage, farming operations Attention; remove the residuals of the diseased plants in the field in time and take them away from destruction.
Seed prevention : 72% agricultural streptomycin sulfate 2000-4000 times solution, or 30% succinic acid copper acid 600-800 times solution soaked for 15-20 minutes, then removed and washed.
Recommended agent (protective + therapeutic)
Before the onset (pre-rain prevention): 50% chlorobromoisocyanuric acid; 125 copper rosinate; 2% spring erythromycin.
In the early stage of the disease (enhanced prevention + prevention after rain): 3% zhongshengmycin; 20% thiazole zinc + 125 copper rosinate; 20% thiazole zinc + 20% thiabium copper.
Soft rot
Easy cause
Continuous cropping, applying unfertilized organic fertilizer, excessive water accumulation, poor permeability in the field, and serious occurrence of pests.
Prevention reminder
Bacterial diseases; pay attention to observe the incidence of the field, timely identification and fight drugs; pathogens are easy to wound, leaf edge water holes, insect wound infection, spread by rain, irrigation water, insects, pay attention to prevention and prevention of rain before rain, while strengthening Prevention and control of pests; timely removal and removal of diseased fruits and diseased plants, soil silt disinfection of diseased plants; timely drainage after rain to avoid flooding.
Seed prevention : 3% neutrophin, 1% seed dressing by weight of seed.
Recommended agent (protective + therapeutic)
Before the onset (pre-rain prevention): 20% thiabium copper; 77% copper hydroxide; 30% succinic acid copper.
In the early stage of the disease (enhanced prevention + prevention after rain): 3% zhongshengmycin; 20% leaf cumin; 20% thiazole zinc + 20% thiabium copper.
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