gray speck

gray speck

[′grā ‚spek]
(plant pathology)
A manganese-deficiency disease of oats characterized by light-green to grayish leaf spots, and later by the buff or light-brown discoloration of the blades.
References in periodicals archive ?
I was still trying to identify some gray specks amid the brown rocks and dark oaks as deer when Kelso ran for his spotting scope.
After finishing the job and cleaning the sprayer, I was walking around the house admiring my stain work when I noticed with horror the gray specks all over my Jeep and the interior upholstery