The fall armyworm (FAW), Spodoptera frugiperda is an invasive insect pest that is native to south America. It is spreading across the world and was recently reported in neighboring Syria. Why is this a big deal?
@Ibrakhim_Aya @MouhanedD @souhad_16 @TSerhal
onlinelibrary.wiley.com/doi/abs/10.111…
Via natural flight and through the movement of infested goods, this pest has now spread to the US, to most African countries, to south east Asia and Australia, wreacking havoc along the way.
In its larval stage, it can cause significant damage to crops. It prefers maize, but can feed on more than 80 additional species of plants, including rice, sorghum, millet, sugarcane, vegetable crops and cotton.
If not managed properly on a landscape and local level, FAW poses a real threat to food security and to the livelihoods of millions of smallholder farmers. @FAO discourages the widespread use of chemical pesticides and advocates robust monitoring, early warning systems and #IPM.
Microorganism-based #biopesticides and several botanicals are key components in the fight against #FAW and in breaking its resistance to pesticides. Intercropping with select companion plants and diversifying the farm environment reduces FAW damage and economic impact.
Predators and #parasitoids provide invaluable services in combatting FAW. Maize plants respond to larval damage by emitting volatiles that are attractive to Cotesia marginiventris, a fierce larval parasitoid. It lays one egg in the larvae, and its offspring eats its way out.
Another control method involves the exploitation of the pest's sex phermone. Mating disruption may be achieved by deploying large concentrations of the pheromone in fields, eventually causing male confusion and disorientation. No mating=reduced population.
The integration of all these methods and many more is crucial for the success of any management program. Farmer training and preparation to identify, report and contain this pest are essential. Is #MoA #Lebanon prepared? Do you have a plan? Or is it going to be business as usual?

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More from @MalekRobert

31 May 20
When planning on starting your small garden, certain simple measures may turn out to be beneficial on the long run.
Let's go through some of them 👇

#agrinerds
@Ibrakhim_Aya @MouhanedD @souhad_16
Design you soil beds in a way that permits an ease of access and maintenance. Whether you're using raised beds or direct soil cropping, keep in mind that you will have to walk through them for inspection, pruning, harvesting...
A balanced irrigation is essential. Over-watering is harmful to the plant and puts it at risk of infection by fungal diseases. Under-watering stresses the plant and reduces yield. While a drip irrigation system is very efficient, a DIY plastic bottle system is muuuch cheaper.
Read 7 tweets
15 May 20
We are supposed to preserve our natural biodiversity, especially that which concerns natural enemies of insects that are harmful to our crops, oak trees and pine groves.
But when an insect becomes a public nuisance and invades people's houses, dealing with it becomes tricky.
Calosoma beetles feed on the pine processionary moth (دودة الصندل) and on the gypsy moth which causes severe defoliation of oak forests. In the early 1900s Calosoma beetles were mass released to control the above-mentioned pests in Minnesota and in other places.
Under certain environmental conditions, their numbers increase dramatically and they start causing public annoyance as we're seeing in the Bekaa.
Read 8 tweets
19 Mar 20
As Nadine pointed out, ToBRFV (Tomato brown rugose fruit virus) is indeed an emerging disease that threatens the Lebanese tomato cultivation, both greenhouse and field grown tomatoes.
It has already been reported in neighboring countries such as Jordan, Turkey and Italy, all countries with which we have strong commercial links, especially with regard to agricultural products and produce (seeds, plants, fruits and vegetables...)
It is only a matter of time before it's incidence is reported in Lebanon. When it comes to emerging pests and diseases, Lebanese researchers in Universities and in LARI usually learn of their presence, inform authorities (MoA), whose advice is usually to sweep it under the rug
Read 10 tweets

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