In the country of Caux, the corn is victim of the crows and the harvests are expected to be poor

" I have never seen that. The cornfields are devastated, ” laments Alban Dudoret, a farmer in Lindebeuf, near Yerville. On its 8 ha plot, the operator had to resow a good third. " And again, I am not the most affected in the village. Jérôme Blondel has lost 9 ha ”, he says. At the origin of these ravages, the ravenous appetite of crows. Corvids consume corn seeds from sowing. They attack young shoots and destroy the plant. The phenomenon is not new, but the situation has worsened over time. Different factors explain what Alban Dudoret describes as a “ scourge  ”. 


In the past, seeds were treated with anthraquinone, a raven repellent. Only here, the use of this pesticide has been banned since 2010 because of its dangerousness for the environment and its harmfulness for health. " In the past, the ancients destroyed the crows' nests," advises Pascal Cordier, also a farmer in Lindebeuf. But today, nobody does it anymore in the name of the animal cause. "

"Their number is deregulated"

« On ne dit pas qu’il ne faut pas de corbeaux, reprend Alban Dudoret. Ce sont des charognards indispensables au fonctionnement de l’écosystème. Mais il faut qu’il y ait une politique de régularisation plus draconienne, car leur nombre est déréglé. Une prise de conscience s’impose. » Lutter contre ces volatiles relève du casse-tête, car les techniques pour les effaroucher s’avèrent le plus souvent infructueuses. Et pour cause : selon les ornithologues, le corbeau serait le plus intelligent des oiseaux. « Ce sont des bêtes malignes, avec une grande faculté d’adaptation, décrypte Alban Dudoret. Certains agriculteurs mettent des détonateurs dans leurs champs. Les corvidés se font surprendre une fois, mais au coup de pétard suivant, ils ne décollent même plus. Les épouvantails ou les gilets jaunes que l’ont voit dans certaines parcelles n’ont pas non plus beaucoup d’effet, car ils comprennent très vite. La seule chose qui les effraie, c’est quand on suspend des corbeaux morts à des piquets. Ils n’aiment pas voir leurs congénères en mauvaise posture. »

À Grèges, près de Dieppe, l’utilisation d’un canon effaroucheur pour éloigner les corbeaux fait débat

« Les dés sont jetés »

Le désarroi des cultivateurs de maïs a pris cette année des proportions encore plus grandes en raison de la crise sanitaire et des restrictions qui en ont découlé dans la pratique de la chasse. « Depuis la levée de l’interdiction, des chasseurs ont tué cent corbeaux en deux jours dans l’exploitation de Jérôme Blondel », indique Alban Dudoret. « Mais pour cette année, les dés sont jetés, pense Alain Cordier. Vu la sécheresse, je ne suis pas sûr que le maïs de nouveau semé reparte bien. »

For the farmers affected, the financial losses promise to be significant. “ You have to count per hectare € 160 of seed and € 50 of fertilizer. Added to this is all the tillage , explains Pascal Cordier. I do not sell the corn I grow, I use it to feed my animals. If the production is poor in quantity and quality, I should buy more concentrates, in other words substitute foods. There is a big impact. "


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