Corn School: Staging post-emergent herbicides

Описание: The race is on for many corn growers as they hustle to apply post-emergent herbicides to control yield-robbing weeds.

The duration of the post-emergence application window depends on the herbicide. A product like glyphosate can be applied all the way up to the 8-leaf stage. But other herbicides have tighter timing and need to be sprayed in-crop at the 4 or 5-leaf stage or at 7 or 8 leaves, for example.

On this episode of the RealAgriculture Corn School, BASF technical development manager Rob Miller looks at three crop staging methods growers can use to determine whether the crop is in the correct development stage required to optimize their herbicide choice.

"That's why it's really important to know which herbicide you're using and always check the label because they do vary in terms of crop leaf stage," stresses Miller.

The primary method used to stage corn in Canada is the 'leaf over' method. In this case, growers need to count the leaves that have unfurled and rest horizontal to the ground. The coleoptile, the first leaf with the rounded tip at the base of the plant, is considered Leaf 1. From there, moving up the plant, growers can count the horizontal leaves to determine the leaf stage of the crop.

#farming #agronomy #scouting #corn

Find more episodes of the Corn School at: https://www.realagriculture.com/corn-...

Website: https://www.realagriculture.com/corn-...

Find us on our other social media platforms:
Twitter:   / realagriculture  
Instagram:   / realagriculture  
Facebook:   / realagmedia