Particulary problems with insects of Diptera order, and better if have information about Cecidomyiidae family, harming this crop
We need references preferably of South America, but everything is welcome
Catalina, My experience with pest control in Lupinus mutabilis has centered on Delia platura in the highlands of Ecuador. If you are getting infestations of Cecidomyiids I suspect that the problem is related to inadequate drainage of the fields leading to anaerobic conditions in the soil which will promote infestation of the seed by fungi. I would suggest using a seed treatment with a broad spectrum fungicide formulated as a wettable powder. Are you using thiodicarb (Semevin) as a seed protectant against Delia? This will certainly kill the Cecidomyiids but I suspect its effectiveness will be minimized by the wet conditions we are facing this El Niño year.
I have attached a copy of the references from a paper in preparation written by Patricia Guerra who worked on this problem at INIAP. I hope this helps
Thanks Clifford B Keil
I had reviewed the Patricia´s work
This Cecidomyiids causes galls and galleries on the stems during the cultivate cycle, we didn´t find them in the seeds. The crops were located between 2590 and 2740 m s nm, less than this altitude we didn´t find de pest
Regards
Catalina
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