The influence of age of transplanting seedlings and rate of seedlings per hill on the yield on three lowland rice varieties

Date

5-1965

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Felipe T. Santos

Co-adviser

Basilio B. Mabayyad

Abstract

Grain yield tended to decrease with increasing rate of seedlings per bill when the seedlings were transplanted 30 x 30 cm. apart at the ages of 25 to 45 days old but increased directly when transplanted after 35 days on nursery beds.

Although the various combinations of growth factors studied did not show any appreciable effect on the grain yield, each of the 3 test varieties when transplanted at different seedling ages exhibit different and distinct pattern of yield reaction and expressed their maximum grain yield with different number of seedlings per hill, indicating that the maximum yield of particular variety when planted at a given age of seedlings could be obtained with proper adjustment of seedling rate per hill.

Each of the varieties expressed its maximum and minimum yields at almost the same combination of growth factors studied. Peta and Tjeremas had their highest grain yield when transplanted at the age of 35 days with 3 seedlings per hill while Bengawan showed its best yield at the same age with 5 seedlings per hill. All the varieties obtained their lowest grain yield when transplanted at 45 days after sowing with 5 seedlings per hill.

Among the three varieties, tjere Mas gave the highest grain yield, mean number of productive tillers, and grain straw ratio. Peta and Bengawan followed in that order.

The days to heading, weight of 1,000 seed samples, plant height, length of panicle, and percentage chaff exhibited a different and distinct pattern of responses to the different combinations of seedlings age and rate of seedling per hill.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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