What are the key points of spring wheat management techniques?
How should wheat be managed in spring? Here is an introduction to spring wheat management for reference: 1. What are the main diseases, pests and weeds to be controlled in wheat in spring? The main task for wheat disease, pest and weed control in spring is controlling weeds in wheat fields. The main weeds in wheat fields in our county are: grass weeds include: jointed goatgrass, bromegrass, wild oat; broadleaf...
How should wheat be managed in spring? Please explain.
Spring wheat management can refer to the following:
1. What are the main diseases, pests and weeds to be controlled in wheat in spring?
The main task for wheat disease, pest and weed control in spring is controlling weeds in wheat fields. The main weeds in wheat fields in our county are: grass weeds include: jointed goatgrass, bromegrass, wild oat; broadleaf weeds include: flixweed, shepherd's purse, sun spurge, cleavers, corn cockle, speedwell, field madder, thistle, false bindweed, field bindweed, etc.
2. What are the control measures for weeds in wheat fields?
The main ones are manual pulling, inter-row cultivation techniques, chemical weeding techniques, etc.
3. What are the chemical weeding measures and precautions for wheat fields?
For wheat fields mainly infested with broadleaf weeds such as flixweed: use 10% tribenuron-methyl wettable powder 10 g/mu; or 75% tribenuron-methyl dry suspension concentrate 1 g/mu; or 72% 2,4-D butyl ester emulsifiable concentrate 50 ml/mu; or 56% MCPA-sodium wettable powder 80-100 g/mu, diluted with 40-50 kg of water for spraying;
To control wild oat, in addition to manual pulling, use 6.9% fenoxaprop-P-ethyl emulsifiable concentrate 40-50 ml/mu diluted with 30 kg of water for spraying. Precautions: select the herbicide according to the occurrence characteristics and population density of weeds in the wheat field; strictly control the dosage and application method; pay attention to the environmental conditions of application, such as temperature and humidity, generally choosing sunny days, no wind, and daytime temperatures stable above 10 degrees for application; the spraying time is generally after 9 a.m. and before 4 p.m.
Remedies for phytotoxicity: rinse with clean water; water appropriately; topdress in time, and spray the leaves with 0.3% monopotassium phosphate or 0.2% urea solution; spray plant growth regulators or growth regulators such as amino acids, Bihu, gibberellin, etc.
4. What are the main diseases and pests to be controlled in wheat in spring?
The main diseases and pests in this period are: wheat leaf rust, powdery mildew, wheat sawfly, wheat aphid and red spider, etc.
5. What are the disease and pest control measures?
Control threshold for wheat red spider: 200 individuals/chi, and when 20% of the area of the upper leaves has white spots, use 20% pyridaben emulsifiable concentrate 20-40 ml diluted with 40-50 kg of water for uniform spraying.
Threshold for wheat aphid: 200 individuals per hundred stems; use 10% imidacloprid wettable powder at 1000 times dilution for control.
To control leaf diseases such as powdery mildew and leaf rust, when the diseased plant rate reaches above 10%, use 12.5% diniconazole wettable powder 30-35 g per mu, or 20% triadimefon emulsifiable concentrate 45-60 ml for spraying control.
Threshold for wheat sawfly: 20 individuals/sq m; use 4.5% beta-cypermethrin emulsifiable concentrate 40-50 ml per mu diluted with water for control.
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