Fig. 1(B). Mixtures of cereal rye (Secale cereale L.) and annual ryegrass (Lolium multiflorum Lam.) can contain too low Mg levels for grazing beef cows in lactation.
Image from the Plant Management Network Image Collections.
Source: Crop Management - Adequate Soil Phosphorus Decreases the Grass Tetany Potential of Tall Fescue Pasture
Copyright © The American Phytopathological Society