Distribution of Dry Matter between Ear and Shoot of Plumage Archer and Proctor Barley grown in the Field

In a field experiment where Proctor barley yielded slightlymore grain than Plumage Archer but had similar total dry weight,the dry-weight ratio of ear to shoot was greater for PlumageArcher than for Proctor at ear emergence and greater for Proctorat maturity, as in a previous pot experiment. When ears wereshaded, the ear: shoot dry-weight ratio at maturity of Proctorwas not significantly greater than that of Plumage Archer. Thevarietal difference in ear: shoot ratio was reversed becauseears of Proctor had a greater relative growth-rate than earsof Plumage Archer, apparently because they photosynthesizedmore. Proctor shoots decreased in weight slightly less thanshoots of Plumage Archer.