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Key Techniques for Overwintering Management of Panax notoginseng Seedling Fields
Panax notoginseng is a perennial herbaceous plant. Once winter arrives, its above-ground parts all die back. At this time, the above-ground parts should be cut off 3 cm above the ground, and all dead branches, fallen leaves, diseased plants and weeds in the field should be cleared away and burned outside the field. The soil should be thoroughly sprayed and disinfected with 0.2-0.3 degrees Baume lime-sulfur mixture, and then a layer of decomposed farmyard manure should be applied at about 1500 kg per mu to keep warm and prevent freezing. If exposed roots are found, soil should be banked up when the winter fertilizer is applied, and finally a layer of grass should be spread on top to ensure the buds overwinter safely.
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How to control broadleaf weeds in potato fields?
(1) Crop rotation: Rotation reduces the density of associated weeds, changes the dominant weed community in the field, and lowers the weed population in the field. (2) Plowing and turning: After the soil is plowed and turned multiple times, perennial weeds such as Ixeris denticulata are buried underground, causing the weeds to gradually decrease or decline in vigor, thereby inhibiting their growth and achieving the purpose of weed control. (3) Inter-row cultivation and hilling: This measure not only controls weeds but also has effects such as deep loosening and water storage and moisture conservation. For example, for open-field potatoes, inter-row cultivation is generally carried out the first time when the seedlings are about 10 cm tall,
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Does applying chlorsulfuron to wheat fields affect cotton?
Chlorsulfuron is a sulfonylurea herbicide with high herbicidal activity, mainly used in wheat and flax fields to control annual monocotyledonous and dicotyledonous weeds. In China, it is currently restricted to use only in wheat fields in the wheat-rice rotation areas of the Yangtze River basin. It is not easily decomposed in soil, and its residual effect lasts up to 6 months. Crops such as cotton, peanut, soybean and vegetables are sensitive to this herbicide. When chlorsulfuron is applied to wheat fields and sensitive crops such as cotton are planted in the following crop, phytotoxicity of varying degrees will occur. In wheat fields where chlorsulfuron has been applied, it is best not to transplant cotton; other crops with strong tolerance can be planted instead.
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Technical Guidance on Chemical Weed Control in Paddy Fields
Chemical weed control in paddy fields is a key step in achieving high and stable rice yields. There are three main types of weeds in the rice fields of our county: grassy weeds such as barnyardgrass, sprangletop, and crabgrass; broadleaf weeds such as monochoria, pondweed, and Rotala indica; and sedge family weeds. In recent years, because rice planting methods in our county have become diverse, the weed spectrum in paddy fields has undergone considerable change: first, some malignant weeds in paddy fields are on the rise. In addition to barnyardgrass, which remains widespread and abundant, sprangletop and Cyperus serotinus have shown a clear upward trend;
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Weeds in sesame fields can be controlled with the herbicide WhiPSuper
[Trade name]WhiPSuper (WhiPSuper) [Common name]fenoxaprop-p-ethyl (fenoxaprop-p-ethyl) [Formulation]6.9% emulsifiable concentrate, 8.05% emulsifiable oil [Dosage]To control barnyardgrass, foxtail, green foxtail, crabgrass and other annual grass weeds, use 750-900 ml of 6.9% WhiPSuper per hectare or 600-750 ml of 8.05% WhiPSuper. To control wild oat, use 900-1050 ml of 6.9% WhiPSuper per hectare
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Introduction to the herbicide Selectone for sesame fields
[Trade name] Selectone [Common name] clethodim [Formulation] 12% emulsifiable concentrate [Application rate] For the control of annual grass weeds, use 525-600 ml of 12% Selectone per hectare. Use the lower rate when weeds are small or when field moisture is good at application, weeds are growing vigorously, and relative air humidity is high; use the higher rate when weeds are older in leaf age, the field is dry, and relative air humidity is low. For the control of perennial grass weeds such as reed,
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Product Introduction to the Herbicide Saturn for Sesame Fields
[Trade name] Saturn [Common name] thiobencarb [Formulation] 50% Saturn emulsifiable concentrate, 90% high-strength Saturn emulsifiable concentrate [Application rate] 2.25-3.0 L of 50% Saturn per hectare, or 1.2-1.5 L of 90% high-strength Saturn. [Timing of use] Apply after sowing sesame but before seedling emergence. [Target weeds] Barnyardgrass, crabgrass, foxtail, bluegrass, goosegrass, rice flatsedge, purslane, etc. [Application technique] Spray volume
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Characteristics and Application of the Herbicide Nabu in Sesame Fields
[Trade name] Nabu [Common name] sethoxydim [Formulations] 12.5% oil-miscible emulsion, 20% emulsifiable concentrate [Application rate] To control annual grass weeds with 12.5% Nabu oil-miscible emulsion or 20% Nabu emulsifiable concentrate, use 1.0 L per hectare at the 2-3 leaf stage; 1.5 L at the 4-5 leaf stage; 2.0 L at the 6-7 leaf stage. Under drought conditions, the application rate of 12.5% Nabu is the same as above; 2
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Chemical weed control in summer sesame fields should be carried out at the right time
The seedling stage of summer sesame coincides with the hot, rainy season. The roots are few and the growth is weak, while weeds emerge quickly, are dense, and grow vigorously, easily shading the sesame seedlings and causing a weed infestation. Corresponding herbicides should be selected for chemical control at different stages. 1. Soil closure treatment after sowing but before emergence. After sowing sesame, use 100 ml of 50% acetochlor emulsifiable concentrate or 200 ml of Dual (72% metolachlor emulsifiable concentrate) per mu, add 50 kg of water, and spray evenly. This can control foxtail grass, crabgrass, shortawn foxtail, goosegrass, and many other annual grass weeds, and also has a certain control effect on many broadleaf weeds propagated by small seeds.
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How to control field bindweed in sesame fields? Oxadiazon can control it
Liu Bengui from Shou County, Anhui Province, called to say that in recent years field bindweed has been severe in local sesame fields, and common herbicides cannot control it; he does not know which herbicide should be used to control this weed. According to relevant information, for chemical weed control in sesame fields, before sowing sesame, use 80-100 ml of 48% trifluralin emulsifiable concentrate per mu, or 50-70 g of 70% prometryn wettable powder, add water and spray evenly on the soil surface, then immediately incorporate into the soil to a depth of 3-5 cm; this can control annual grass weeds and some broadleaf
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