* Department of Plant Physiology, S. V. Agricultural College, Tirupati-517502
Division of Plant Physiology, Indian Agricultural Research Institute, New Delhi-110012
Field experiments were conducted during rabi 1979–80 and 1980–81 to study the effect of sowing dates on yield and yield attributes of barley genotypes. Planting the crop early in season i.e., about a month and half before November was as much productive or even more in comparison to later sowing of until middle of November. Delayed plantings around second week of December reduced the growing season and adversely affected the grain yield. The components of grain yield were affected differently in different sowings and in the early to normal plantings the mutural compensation between these components balanced the effect of sowing dates while at late planting the grain yeild suffered mostly due to drastic reduction in ear number. Further, the short duration varieties yielded as much as the medium late types under early to late plantings. Long duration varieties were not superior to other types under early planting and these invariably yielded less than the other types at late sowing.
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