Alfalfa

"identification of alfalfa leaf diseases using image recognition technology", by . pone.0168274.g002: Results of automatic segmentation of sub-images of four alfalfa leaf diseases using the segmentation method integrated with K_ median clustering algorithm and linear discriminant analysis.A: Sub-image of alfalfa common leaf spot. B: Image after...

Alfalfa is a lengthy lived, perennial bean; stems decumbent to set up from a woody crown to about 8 to 31-1/2 inches high; new growth takes place from buds in the crown; taproot stout. Leaves: Leaves are trifoliate substance, alternately organized on the stem; petiole pubescent, 3/16 to 1-3/16 inches long; brochures 3/8 to 9/16 inch long, 1/8 to 3/8 inch wide, narrowly lanceolate to obovate, glabrous or appressed hirsute, paler environment-friendly under; stipules entire to sharply toothed, 3/16 to 5/8 inches long, pubescent on lower surface area, glabrous on top surface area. Blossoms: Flowers March to October; florescence spikelike, 5 to 40 flowered, longer in fruit; calyx 3/16 inch long or much less; corolla 5/16 to 3/8 inch long, purple or multicolored.

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