Abstract
To clarify the role of recumbence habit in the occurrence of intervarietal competition, the present experiments were carried out with the two vaneties of wheat "Shmchunaga" and "Norin N0.22"which were grown separately and in a mixture in water-culture (c.f. Fig. 1). The fonner showed erect type and the latter prostrate one in the young stage of growth. It was found by the preliminary experiments hat the erect variety was superior in the root development throughout the vegetative growth stage to the prostrate variety, as shown in Table 2, the trend agreeing well with that obtained previously with barley in Report I.
