1
point
Fall Armyworm

General    Karonga,Malawi

What are recommended fall army worms chemicals that a farmer can apply??


Posted by: kaporo south 2 (1 point) kaporo south 2
Posted: January 8, 2020


Vaskar Thapa commented,
The reference of the paper that I mentioned in my comment is Sharma et al. (2018).BIO-RATIONAL MANAGEMENT OF ARMYWORM (MYTHIMNA SEPARATA) (LEPIDOPTERA: NOCTUIDAE) IN CHITWAN CONDITION OF NEPAL. J. Inst. Agric. Anim. Sci. 35: 143-150. I added the reference if you are interested to read the research.
3 months ago.

Vaskar Thapa commented,
I have found additional information on chemical control of fall Armyworm from the Noble Research Foundation site. Please check if helpful for you:

There are a wide variety of insecticide options for control of armyworms. Which to choose depends on the crop grown, the armyworm species present, their size or growth stage, proximity to sensitive crops or neighborhoods, etc.

Some of the products available include:

Diflubenzuron (Dimilin)
Chlorantraniliprole (Prevathon)
Spinosad (Tracer)
Malathion (many trade names)
Carbaryl (Sevin, many trade names)
Chlorpyrifos (many trade names)
Methomyl (Lannate)
Pyrethroids such as zeta-cypermethrin (Mustang Maxx)
Gamma-cyhalothrin (Proaxis)
Lambda-cyhalothrin (Warrior)
Beta-cyfluthrin (Baythroid)
Always refer to the specific insecticide label to ensure it is labeled for your crop and in your state, for the correct rate to control the species present and for any grazing, harvest or retreatment restrictions. Remember, the label is the law.

2 months ago.



Answers

0
points
I am not an expert in the field but a research conducted in Nepal showed Spinosad 45% (0.25ml/ lit of water) significantly reduce the damage (lowest up to 0.9%). Spinosad is a natural insecticide extracted from soil bacteria unlike synthesized chemical and it is environmentally friendly. Spinosad is approved by US EPA since 1997.


Posted by: Vaskar Thapa (1 point) Vaskar Thapa
Posted: January 8, 2020


Vaskar Thapa commented,
The reference of the paper that I mentioned in my comment is Sharma et al. (2018).BIO-RATIONAL MANAGEMENT OF ARMYWORM (MYTHIMNA SEPARATA) (LEPIDOPTERA: NOCTUIDAE) IN CHITWAN CONDITION OF NEPAL. J. Inst. Agric. Anim. Sci. 35: 143-150. I added the reference if you are interested to read the research.
3 months ago.



0
points
I was providing training to extension plant protection specialists in Malawi last October, under USAID funding, and we developed a list of pesticides that were efficacious and lower risk. Not all of these are available in Malawi and I would be pleased to expand on this answer if needed.

I'm sorry I am not using trade names, but can add local Malawi trade names if needed.

The list of pesticides that only require baseline protective clothing (i.e. long sleeved shirt, long pants, stout shoes and gloves) is as follows:

Azadirachta indica (neem which can be locally produced), Bacillus thuringiensis (subsp. Aizawai), chlorantraniliprole, flubendiamide,
methoxyfenozide, SfNPV, pyrethrum

PLEASE NOTE: the widely available formulations of profenofos and chlorpyrifos are far too toxic to humans to be used, and there is evidence that cypermethrin and other pyrethroids that are used against African armyworm, are not effective against fall armyworm.

Details of this work can soon be found in an Open Source publication: Jepson, P.C., Murray, K., Bach, O., Bonilla, M.A., Neumeister, L. (2020) Selection of pesticides to reduce human and environmental health risks: a global guideline and minimum pesticides list. Lancet Planetary Health 2020; 4:e???-??? (in press, February Edition)

The needs assessment in Malawi that led to this work can be found at: Murray, K., Jepson, P.C., Chaola, M. (2019) Fall Armyworm Management by Maize Smallholders in Malawi: An Integrated Pest Management Strategic Plan. Mexico, CDMX, CIMMYT: https://repository.cimmyt.org/bitstre...

Paul Jepson
Oregon State University
under contract to USAID



Posted by: Paul Jepson (1 point) Paul Jepson
Posted: February 4, 2020




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