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chemical weed control in tomato, onion,fenugreek,cabbage, cauliflower, potato

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agropedia specialist, please tell me about chemical weed control (pre and post emergence)  for broad leaf & narrow leaf in tomato, onion,fenugreek,cabbage, cauliflower, potato, chilly etc

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Chemical weed control in chilly crop

 Chemical weed control in Chilli crop

             This is broad leaves crop and very sensitive to chemicals. So, the use of Weedicide should be very carefully. It can be done in the following manner-

(i) Pre-plant soil incorporation (in transplanted crop): Use of Fluchloralin 0.5-1.0 kg ha-1. Either incorporate 4-6 weeks before transplanting or apply with irrigation water in established crop. Or Nitralin & Trifluralin @ 0.5-1.0 kg ha-1. Either of them can be incorporated 4-6 weeks before transplanting depending upon the soil type.

(ii) Pre-emergence (direct seeded): Use of Bensulide @ 4-5 kg ha-1. It can try in nursery also.Or Diphenamid @ 4-6 kg ha-1.

(iii) Post-emergence (both in direct sown and transplanted crops): Use of Diphenamid (4-6 kg ha-1) or Acifluorfen (spray only in the forenoons) or Sethoxydim @ 0.22-0.54 kg ha-1 or cycloxydin @ 0.22-0.54 kg ha-1 or Fluazifop @ 0.22 kg ha-1.

        These herbicides can be used against all type of weeds in the chilli crop. The amount of water in the solution for spraying should be proper for better results. The spraying swath should be proper. When we incorporate the Weedicide in the soil, the moisture regime of the soil should be proper for the best results.

Mealybug insects are oval in

Mealybug insects are oval in shape and have a life cycle of four stages in female —. Egg, larva I, larva II and adult. Initially the affected portion will be chlorotic, later changing to brown colour and dry. 

Chemical weed control in Potato crop

 

Chemical weed control in Potato crop

 

      This is broad leaves crop and very sensitive to chemicals. So, the use of Weedicide should be very carefully. It can be done in the following manner-

 

(i) Pre-plant soil incorporation: Use EPTC @ 1-2 kg ha-1 or Fluchloralin @ 1.0 kg ha-1. EPTC is known to increase the proportion of large sized tubers in the harvest, quite apart from its weed control effect.

(ii) Pre-emergence: Use of Alachlor @ 1.0 kg ha-1or Pendimethalin @ 1.8 kg ha-1 or Metribuzin @ 1.0 kg ha-1 or Methabenzthiazuron 1.0-1.5 kg ha-1 or Oxifluorfen @ 0.1-0.2 kg ha-1 or Oxidiazon @ 0.75 kg ha-1.

(iii) Early post emergence: Use of Paraquat and Diaquat @ 0.36-1.0 kg ha-1 or Metribuzin @ 0.35-1.0 kg ha-1. Apply when no more than 5-10%potao plants have just emerged from the soil. It is the most commonly used treatment in potato in India.

         These herbicides can be used against all type of weeds in the potato crop. The amount of water in the solution for spraying should be proper for better results. The spraying swath should be proper. When we incorporate the Weedicide in the soil, the moisture regime of the soil should be proper for the best results.

 

Chemical control of weeds in cabbage and cauliflower crops

 

Chemical weed control in cabbage and cauliflower crops-

 

     These are the Cole crops of Cruciferae family. The use of chemicals shoukld be done carefully. The control of weeds can be done in the following manner-

1.    Pre- plant soil incorporation: Fluchloralin @ 0.75-1.5 kg ha-1 or Nitralin/Trifluralin @ 0.75-1.0 kg ha-1.

2.    Pre-transplant surface application: Oxadiazon @ 1.0 kg ha-1 or Pendimethalin @ 1.0 kg ha-1 or Isoproturon @ 0.70-1.5 kg ha-1.

3.    Pre-emergence (Direct sown): Alachlor 2-3 kg ha-1 or CDAA @ 4-5 kg ha-1 or Propachlor @ 2-3 kg ha-1 or Chlorpropham Oxyfluorfen @ 0.05-0.25 kg ha-1.

4.    Post-transplant application: Alachlor @ 1-2 kg ha-1 or CDAA @  4-5 kg ha-1 or Nitrofen @ 1-3 kg ha-1 or Isoproturon @0.75-1.0 kg ha-1

 

           These herbicides can be used against all types of weeds in cabbage and cauliflower crops. The amount of water in the solution for spraying should be proper for better results. The amount of water should be kept 500-800 litres ha-1 for uniform covering of field and weeds. The spraying swath should be proper. When we incorporate the Weedicide in the soil, the moisture regime of the soil should be proper for the best results.

 

 

Chemical weed in the onion crop

Chemical weed control in the onion crop-

It can be done in the following manner-

  1. Pre-transplant soil incorporation: Fluchloralin @ 1.0-1.5 kg ha-1 or Trifluralin/Nitralin @ 0.75-1.5 kg ha-1.
  2. Pre-transplant surface application: Alachlor @ 1.5-2.0 kg ha-1 or Oxadiazon @ 0.5-1.0 kg ha-1 OR Methabenzthiazuron @ 0.5-1.4 kg ha-1 or Pendimethalin @ 0.5-1.5 kg ha-1 or Nitrofen @ 2.0 kg ha-1. Apply these weedicides at 1-3 days after transplanting. And apply to surface of beds just before filling water for transplanting.
  3.   Post-transplant: Nitrofen @ 1-2 kg ha-1or Chlorozuron @ 1-2 kg ha-1 or Propachlor @ 1-2 kg ha-1 or Alachlor @ 1.5-2.0 kg ha-1. It should be applied about 25 days after transplntig.
  4. Pre-emergence (Nursery): Pendimethalin @ 0.5-1.0 kg ha-1 or Butachlor @ 1.0 kg ha-1. It can also applied to beds 7-10 days before sowing.
  5. Post-emergence (Nursery):Nitrofen @ 1-2 kg ha-1 or Chloroxuron @ 1-2 kg ha-1.

            These herbicides can be used against all type of weeds in the onion crop. The amount of water in the solution for spraying should be proper for better results. The spraying swath should be proper. When we incorporate the Weedicide in the soil, the moisture regime of the soil should be proper for the best results.   

Chemical weed control in tomato

It is an important vegetable crop and very susceptible to chemicals. So, the selection of chemical for weed control in tomato shoud proper. The following weedicide can be used;

(i) Preplant soil incorporation(in transplanted crop): Diphenamid @ 4-6 kg ha-1 or Pebulate @ 0.75-1.0 kg ha-1 or Nitralin/Trifluralin @ 0.75-1.0 kg ha-1 can be used. Determine safe interval betbeen transplantig tomato and herbicide application for each situation. Usually 4-6 weeks interval is considered appropriate. And Napropamide @ 1.0 kg ha-1 is suited for direct seeded crops, Do not use on alkaline soils.

(ii) Preplant surface appplication: Alachlore @ 1.0-1.25 kg ha-1 or Fluchloralin @ 1.25 kg ha-1 or Metribuzin @ 0.35 kg ha -1 or Nitrofen @ 1.0 kg ha-1 or Oxadiazon @ 1.0 kg ha-1. Spray these herbicides uiformly in the field for better results.

(iii) Preemergence (in direct seeded crop): Alachlor @ 1-2 kg ha-1 . It can be used also in tomato nerseries. Or Metribuzin@ 0.2-0.35 kg ha-1 and Do not use in use in glass house. Or Bensulide @ 4-6 kg ha-1 or Dephenamid @ 4-6 kg ha-1. Do not use it in high pH soils. Also do not tank-mix fertilizers with it.

(iv) Post transplant: Metribuzin 0.35-0.50kg ha-1. Apply only after the transplanted seedlings are well established. Or Flauzi-fop @ 0.12-0.56 kg ha-1. Use only in the condition perennial grasses pose problem. Or Bethoxidin @ 0.22-0.45 kg ha-1 Or Cycloxidin @ 0.22-0.45 kg ha-1. These two are very useful against annual grasses.

(v) Post emergence (direct seeded crop): Metribuzin@ 0.28-0.50 kg ha-1. It should be applied when the crop is in 4-6 leaf stage.

             Apply these chemicals properly in the field. The slution should cover the crop or field uniformly for better results. The amount of water in the solution for better application and efficiency should be proper. And in case of soil incorporation and field application, the moisture regeme in soil should also be proper for better performance of weedicide.

how we use these chemicals

this information is very use ful. thanks....

please mention if it is in active ingredient and how we use in the field ,,,because we use knapsack sprayer.

plaese , give info...

Please note that this is the opinion of the author and is Not Certified by ICAR or any of its authorised agents.