. Cyclopedia de cultures agricoles, une étude des cultures populaires et des méthodes de récolte aux États-Unis et au Canada ;. Produits agricoles ; l'Agriculture. Maïs Maïs 422 Cette partie est pauvre en protéines et de l'huile, composé principalement de l'amidon. (Cochon. 644.) (3) le germe lui-même, qui occupe la partie centrale du noyau vers l'extrémité. C'est très riche en pétrole. Plus de quatre cinquièmes de l'ensemble de l'huile de l'amande se trouve dans le germe. Elle est aussi riche. Fig. 645. Les grains. Sur la gauche, des noyaux d'huile (grands germes) ; à droite, bas-huile noyaux (petits microbes). en protéines, contenant près d'un cinquième de tous les

• Contributeur: The Book Worm / Alamy Banque D'Images
• ID de l’image: RDR3R1
• Taille du fichier: 7,1 MB (488,7 KB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 1241 x 2012 px | 21 x 34,1 cm | 8,3 x 13,4 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.

. Cyclopedia of farm crops, a popular survey of crops and crop-making methods in the United States and Canada;. Farm produce; Agriculture. 422 MAIZE MAIZE This part is poor in both protein and oil, consisting mainly of starch. (Pig. 644.) (3) The germ itself, which occupies the central part of the kernel toward the tip end. This is very rich in oil. More than four-fifths of the entire oil of the kernel resides in the germ. It is also rich. Fig. 645. Kernels. On the left, high-oil kernels (large germs); on the right, low-oil kernels (small germs). in protein, containing nearly one-fifth of all the protein in the kernel, although the germ itself constitutes only about one-tenth of the weight of the kernel. (Pig. 645.) In selecting seed corn by mechanical examination for improvement in composition, we remove from the ear a few average kernels, cut them into cross- sections, preferably near the tip end of the kernel (see longitudinal sections), and examine these sec- tions as they are cut, usually simply with the naked eye, selecting for seed those ears the kernels of which show the qualities desired. Samples for analysis. In order that the breeder may know what he has accomplished in his work of mechanical selection, he should have an analysis made of two composite samples representing each of the two lots of ears ; that is, the selected lot and the rejected lot. One composite sample should be made by taking ten average kernels from each of the selected ears (ninety-six ears preferred) and another sample by taking ten average kernels from each of the rejected ears (100 ears or more). Each of these two samples should be put into a separate sack, properly labeled, and sent to the chemist for analysis. Of course, if the breeder desires to breed for physical type and increased yield only, then no chemical analysis is needed, and all that is necessary to begin work is to select the ninety-six most nearly perfect ears obtainable for the breeding plot. Size of breeding plot.

Recherche dans la banque de photos par tags

• bookcentury1900
• bookdecade1920
• bookyear
• livresubjectagriculture