Pesticide composition

Abstract

The invention relates to a pesticide composition. Active ingredients of the pesticide composition are picoxystrobin and tebuconazole in a mass ratio of 20:1-1:50. The picoxystrobin and the tebuconazole which are compounded have obvious synergy, and are mainly used to prevent and control wheat foliage diseases such as leaf blight, leaf rust, glume spot, brown patch, powdery mildew and the like.

Description

technical field

[0001] The invention relates to a pesticide composition, in particular to a fungicidal composition with picoxystrobin and tebuconazole as active ingredients and its application in crop disease control. technical background

[0002] During the growth and development of crops, they are vulnerable to various diseases, especially fungal diseases, which are of various types and cause serious harm. For a long time, chemical control is the main effective means of disease control. However, due to single and unscientific drug use in recent years, many pathogenic bacteria have developed resistance to the currently used pesticides, such as powdery mildew and sheath blight bacteria, which are very common and have become a major problem in chemical control. Due to the resistance of the bacteria, frequent application of pesticides has caused increased burden on farmers and increased environmental pollution. In areas where certain diseases occur seriously, conventional pe...

Examples

example 1

[0017] Bioassay example 1: Indoor toxicity determination and ratio screening of picoxystrobin and tebuconazole compound against wheat powdery mildew

[0018] Test material: Wheat powdery mildew diseased leaves collected from the field

[0019] Test method: Select three-to-four-leaf wheat seedlings with consistent growth vigor, and select 3 pots of wheat seedlings for each treatment, and spray them with a Potter spray tower at a pressure of 50PSI, about 5mL per pot. Five concentration gradients were set for each drug. Inoculation was carried out 24 hours after the chemical treatment, and the conidia were evenly shaken off the wheat powdery mildew leaves collected from the field above the wheat seedlings for inoculation, and then the wheat seedlings were cultured in the greenhouse. After 7 days, according to the incidence classification standard of wheat powdery mildew, the disease index of the whole plant was investigated, and the control effect was calculated, and then the in...

example 2

[0027] Biological Assay Example 2: Indoor Toxicity Test and Ratio Screening of Picoxystrobin and Tebuconazole Combination on Wheat Sheath Blight

[0028] Test method: The test refers to the "People's Republic of China Agricultural Industry Standard NY / T1156.5-2006", broad bean detached leaf method. Cultivate the wheat sheath blight bacteria with PDA medium, and when the bacterial colony just covers the petri dish, punch holes from the edge with a puncher with an inner diameter of 5 mm, and the punched mycelium block is used as an inoculum. Select broad bean leaves with the same leaf position, 10 leaves for each treatment, soak in the prepared medicinal solution for 10 minutes, take them out to dry, and put them into a petri dish covered with moisturizing paper. Five concentration gradients were set for each drug. Finally, the mycelium block was placed upside down and connected to the center of the leaf, and cultivated in a constant temperature incubator at 28°C. After the co...

Embodiment 1

[0036] Example 1: 42% picoxystrobin tebuconazole wettable powder

[0037] Picoxystrobin 40%

[0038] Tebuconazole 2%

[0039] Sodium lauryl sulfate (wetting agent) 2%

[0040] Sodium lignosulfonate (dispersant) 5%

[0041] White carbon black (filler) 10%

[0042] Kaolin (filler) makes up to 100%.

[0043] The active ingredient, wetting agent, dispersant and filler are fully mixed according to the ratio of the formula, and pulverized by a jet mill to obtain 42% picoxystrobin-tebuconazole wettable powder.

[0044] This embodiment is used for preventing and treating wheat powdery mildew. Dilute and spray 42% picoxystrobin tebuconazole wettable powder at 200a.i.g / ha with water, and the control effects are 90.3% and 88.8% 7 days and 14 days after application. 25% picoxystrobin suspension was used at 250a.i.g / ha and 25% tebuconazole suspension was used at 220a.i.g / ha in the same way, and the control effects were 81.4% and 78.5% for 7 days and 14 days after the drug. % and 79.6%...

technical field

[0001] The invention relates to a pesticide composition, in particular to a fungicidal composition with picoxystrobin and tebuconazole as active ingredients and its application in crop disease control. technical background

[0002] During the growth and development of crops, they are vulnerable to various diseases, especially fungal diseases, which are of various types and cause serious harm. For a long time, chemical control is the main effective means of disease control. However, due to single and unscientific drug use in recent years, many pathogenic bacteria have developed resistance to the currently used pesticides, such as powdery mildew and sheath blight bacteria, which are very common and have become a major problem in chemical control. Due to the resistance of the bacteria, frequent application of pesticides has caused increased burden on farmers and increased environmental pollution. In areas where certain diseases occur seriously, conventional pe...

Examples

example 1

[0017] Bioassay example 1: Indoor toxicity determination and ratio screening of picoxystrobin and tebuconazole compound against wheat powdery mildew

[0018] Test material: Wheat powdery mildew diseased leaves collected from the field

[0019] Test method: Select three-to-four-leaf wheat seedlings with consistent growth vigor, and select 3 pots of wheat seedlings for each treatment, and spray them with a Potter spray tower at a pressure of 50PSI, about 5mL per pot. Five concentration gradients were set for each drug. Inoculation was carried out 24 hours after the chemical treatment, and the conidia were evenly shaken off the wheat powdery mildew leaves collected from the field above the wheat seedlings for inoculation, and then the wheat seedlings were cultured in the greenhouse. After 7 days, according to the incidence classification standard of wheat powdery mildew, the disease index of the whole plant was investigated, and the control effect was calculated, and then the in...

example 2

[0027] Biological Assay Example 2: Indoor Toxicity Test and Ratio Screening of Picoxystrobin and Tebuconazole Combination on Wheat Sheath Blight

[0028] Test method: The test refers to the "People's Republic of China Agricultural Industry Standard NY / T1156.5-2006", broad bean detached leaf method. Cultivate the wheat sheath blight bacteria with PDA medium, and when the bacterial colony just covers the petri dish, punch holes from the edge with a puncher with an inner diameter of 5 mm, and the punched mycelium block is used as an inoculum. Select broad bean leaves with the same leaf position, 10 leaves for each treatment, soak in the prepared medicinal solution for 10 minutes, take them out to dry, and put them into a petri dish covered with moisturizing paper. Five concentration gradients were set for each drug. Finally, the mycelium block was placed upside down and connected to the center of the leaf, and cultivated in a constant temperature incubator at 28°C. After the co...

Embodiment 1

[0036] Example 1: 42% picoxystrobin tebuconazole wettable powder

[0037] Picoxystrobin 40%

[0038] Tebuconazole 2%

[0039] Sodium lauryl sulfate (wetting agent) 2%

[0040] Sodium lignosulfonate (dispersant) 5%

[0041] White carbon black (filler) 10%

[0042] Kaolin (filler) makes up to 100%.

[0043] The active ingredient, wetting agent, dispersant and filler are fully mixed according to the ratio of the formula, and pulverized by a jet mill to obtain 42% picoxystrobin-tebuconazole wettable powder.

[0044] This embodiment is used for preventing and treating wheat powdery mildew. Dilute and spray 42% picoxystrobin tebuconazole wettable powder at 200a.i.g / ha with water, and the control effects are 90.3% and 88.8% 7 days and 14 days after application. 25% picoxystrobin suspension was used at 250a.i.g / ha and 25% tebuconazole suspension was used at 220a.i.g / ha in the same way, and the control effects were 81.4% and 78.5% for 7 days and 14 days after the drug. % and 79.6%...