{"id":457,"date":"2016-05-30T15:23:55","date_gmt":"2016-05-30T19:23:55","guid":{"rendered":"https:\/\/maizex.com\/evaluations-du-semis-et-du-peuplement-de-mais\/"},"modified":"2022-08-02T09:21:06","modified_gmt":"2022-08-02T13:21:06","slug":"evaluations-du-semis-et-du-peuplement-de-mais","status":"publish","type":"post","link":"https:\/\/maizex.com\/fr\/evaluations-du-semis-et-du-peuplement-de-mais\/","title":{"rendered":"\u00c9valuations du semis et du peuplement de ma\u00efs"},"content":{"rendered":"

Avant que la performance de votre semoir de maïs et le peuplement des jeunes pousses de maïs ne disparaissent de votre rétroviseur, voici quelques observations pour la fin du printemps 2016. <\/p>\n\n

1.  Gestion des résidus<\/h4>\n\n

Des conditions de culture avec un volume élevé de résidus peuvent améliorer la structure du sol et l’infiltration de l’eau; toutefois, des résidus qui encombrent le sillon de semis ou qui entravent l’émergence peuvent retarder la pousse du plant, ce qui provoquera un retard par rapport aux plants voisins et entrainera des réductions de rendement.   <\/p>\n\n

\"\"<\/p>\n\n

Parmi tous les modules que j’ai essayés sur mon semoir de maïs au fil des ans, mon préféré est probablement le mécanisme intégré de nettoyage de rangées, avec contrôle de pression verticale. Il procure un avantage évident en situation de semis direct; mais il peut aussi permettre certaines améliorations réelles au terreau de semis, pour une série d’autres conditions de travail du sol comportant des résidus.      <\/p>\n\n

\"\"
\n <\/p>\n\n

2.  Remplissage du sillon de semis <\/span><\/h4>\n\n

À l’occasion, selon le contenu en argile ou selon le degré d’humidité du terreau lors du semis, un bon remplissage du sillon de semis peut devenir un grand défi. Lorsque la semence atteint dans un premier temps la zone humide, on observe souvent qu’elle germera et qu’elle émergera, même si les sillons ne sont pas bien refermés. Ces plants subiront alors un grand stress au point végétatif et aux premières racines coronales, occasionnant un rendement médiocre. <\/p>\n\n

\"\"<\/p>\n\n

Dans certains cas, une roulette de fermeture à pointes, avec des chaines fixées à l’appareil, peut faire un très bon travail pour remplir le sillon et couvrir la semence. Elgin Reid, un nouveau représentant Maizex dans la région de Milton, l’a installé sur son semoir, pour offrir des conditions plus propices au semis, même dans le cas de semis direct sur des sols plus lourds.   <\/p>\n\n

\"\"<\/p>\n\n

 <\/p>\n\n

3.  Finesse des agregats pour le lit de semence<\/h4>\n\n

Que votre opération agricole privilégie le travail complet du sol, le travail vertical, le semis direct ou une solution intermédiaire, l’essentiel pour obtenir une émergence uniforme peut souvent se retrouver dans la finesse du lit de semence. <\/p>\n\n

\"\"<\/p>\n\n

Évidemment, les adeptes du semis direct et du labour en bande affirmeront que cette zone d’agrégats fins peut être assez réduite. Vous remarquez un manque d’uniformité dans le développement hâtif du maïs : c’est souvent à cause du lit de semence qui sera trop grossier.<\/p>\n\n

Maintenant, c’est le bon temps d’évaluer l’uniformité de votre peuplement de maïs et d’explorer les opportunités d’amélioration – soit pour votre semoir de maïs ou soit pour votre méthode de travail du sol.   <\/p>\n\n

\"\"<\/p>\n\n

 <\/p>\n\n

Greg Stewart
\nExpert en agronomie, Semences Maizex<\/em><\/p>\n\n

 <\/p>\n\n

Est-ce que vous aimez ce que vous êtes en train de lire? Inscrivez-vous afin de recevoir à chaque semaine, dans votre boite de réception, les mises à jour agronomiques de Greg Stewart et de l’Équipe agronomique de Maizex! CLIQUER ICI<\/a><\/p>\n\n

 <\/p>\n\n

 <\/p>\n\n

 <\/p>","protected":false},"excerpt":{"rendered":"

Avant que la performance de votre semoir de maïs et le peuplement des jeunes pousses de maïs ne disparaissent de votre rétroviseur, voici quelques observations pour la fin du printemps…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"_EventAllDay":false,"_EventTimezone":"","_EventStartDate":"","_EventEndDate":"","_EventStartDateUTC":"","_EventEndDateUTC":"","_EventShowMap":false,"_EventShowMapLink":false,"_EventURL":"","_EventCost":"","_EventCostDescription":"","_EventCurrencySymbol":"","_EventCurrencyCode":"","_EventCurrencyPosition":"","_EventDateTimeSeparator":"","_EventTimeRangeSeparator":"","_EventOrganizerID":[],"_EventVenueID":[],"_OrganizerEmail":"","_OrganizerPhone":"","_OrganizerWebsite":"","_VenueAddress":"","_VenueCity":"","_VenueCountry":"","_VenueProvince":"","_VenueState":"","_VenueZip":"","_VenuePhone":"","_VenueURL":"","_VenueStateProvince":"","_VenueLat":"","_VenueLng":"","_VenueShowMap":false,"_VenueShowMapLink":false,"footnotes":"","_tec_slr_enabled":"","_tec_slr_layout":""},"categories":[63],"tags":[452,446,440],"class_list":["post-457","post","type-post","status-publish","format-standard","hentry","category-agronomie","tag-gestion-des-champs","tag-mais-grain","tag-tips-fr"],"acf":[],"yoast_head":"\n\u00c9valuations du semis et du peuplement de ma\u00efs - 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