Archive image from page 74 of Development and activities of roots. Development and activities of roots of crop plants; a study in crop ecology . developmentactiv00weav Year: 1922 Investigations at Lincoln, Nebraska. 53 the longer ones had a few secondary laterals, mostly less than inch long. On smaller plants nearly all of the laterals were less than inch in length and extended out in a more or less horizontal direction or turned somewhat obliquely downward. On all roots the 2 to 4 inches nearest the tip were glistening white and unbranched. Nodules were abundant. A third examination
Archive image from page 74 of Development and activities of roots. Development and activities of roots of crop plants; a study in crop ecology . developmentactiv00weav Year: 1922 Investigations at Lincoln, Nebraska. 53 the longer ones had a few secondary laterals, mostly less than inch long. On smaller plants nearly all of the laterals were less than inch in length and extended out in a more or less horizontal direction or turned somewhat obliquely downward. On all roots the 2 to 4 inches nearest the tip were glistening white and unbranched. Nodules were abundant. A third examination of the root development was made July 24 on both upland and lowland areas. The plants were 115 and 106 days old respec- Fig. 24.—A. Alfalfa 63 days old. B. Sweet clover 63 days old. tively. Those in the upland area averaged feet in height, the tallest reach- ing feet. They had developed normally in every way, but were somewhat affected by 'white spot.' On the lowland the crop averaged feet high, the tallest plants reaching 2 feet. It has already been pointed out (p. 45) that June was a very favorable month for growth. Excellent growth con-
Size: 1122px × 1783px
Photo credit: © Actep Burstov / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1920, 1922, archive, book, bookauthor, bookdecade, bookpublisher, booksubject, bookyear, crist_john_w_joint_author, crops_and_climate, drawing, historical, history, illustration, image, jean_frank_covert_1880_joint_author, page, picture, plant_ecology, print, reference, roots_botany_, vintage, washington_carnegie_institution_of_washington, weaver_john_e_john_ernest_1884_1966
