Les cultures agricoles, leur culture et leur gestion, un manuel non technique pour la culture, la gestion et l'amélioration des cultures agricoles . le producteur d'id et atteint une hauteur de deux à quatre pieds. Les feuilles arequite variable quant à la taille et la forme, les plus basses sur le stock étant com-parativement grand et irrégulier, Alors que les théssupérieurs sont plutôt petits et étroits.Les petites fleurs verdâtre sont borneon les extrémités ou dans les aisselles des branches.La plante entière présente une apparence grisâtre ou méaly argentée qui distingue de la véritable herbe de porc. La graine isabout un-vingtième d'un pouce dans le diam-eter,

• Contributeur: The Reading Room
• ID de l’image: 2AX37DJ
• Taille du fichier: 7,1 MB (172,7 KB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 1494 x 1672 px | 25,3 x 28,3 cm | 10 x 11,1 inches | 150dpi

Informations supplémentaires

Cette image appartient au domaine public, ce qui signifie que le droit d’auteur a expiré ou que le titulaire du droit d’auteur a renoncé à ses droits. Les frais facturés par Alamy couvrent l’accès à la copie haute résolution de l’image.

Cette image peut avoir des imperfections car il s’agit d’une image historique ou de reportage.

Farm crops, their cultivation and management, a non-technical manual for the cultivation, management and improvement of farm crops . id grower and attains a height of from two to four feet. The leaves arequite variable as to size and shape, the lower ones on the stock being com-paratively large and irregular, while theupper ones are rather small and narrow.The small greenish flowers are borneon the ends or in the axils of the branches.The entire plant presents a silvery grayor mealy appearance which distinguishesit from the true pigweed. The seed isabout one-twentieth of an inch in diam-eter, lens-shaped and a dull black color.The seeds have long vitality, lying dor-mant in the soil for many years. The control of lambs-quarters issimilar to that of pigweed. In hoedcrops the weed is very persistent andcultivation should be continued until latein the season. In gardens and othersmall areas the weed should be pulled orchopped out while young. Since the plants are very succulent while young, sheep may be used to pasture them where conditions Mill per- Cultivation in the late summer or fall will germinate seed remaining. Lambs-Quarters, or SmoothPigweed (Chenopodium album)} A—Root. B—Seed enlarged tliree timesnatural size. mit. in the soil which will eliminate the seed that may germinate the next year. Wild Mustard or Charlock.—The cruciferaj or mustard family con-tains a large number of weeds, of which the wild mustard and tumblingmustard are the most troublesome. The plants of this family may berecognized by the shape of the flowers, which consist of four petals arrangedlike arms of a cross. This character was used as the basis for naming thefamily. Wild mustard, because of its immense productiveness and the exceed-ingly long vitality of its seeds, is one of the most difficult weeds to dislodge. It is an annual plant, which in its earlier stages of growth bears someresemblance to the radish or yellow-fleshed varieties of the turnip. It > Courtesy of The Pennsy

Recherche dans la banque de photos par tags

• bookcentury1900
• bookdecade1910
• bookidfa
• livresubjectagriculture