Performance of selected late maturing rice varieties under different levels of nitrogen fertilization

Date

3-1987

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Edwin L. Javier

Abstract

Ten late maturing rice varieties were evaluated under three levels of nitrogen fertilization (0,30 and 90kg N/ha) during the wet season of 1986 at the UPLB Central Experiment Station.

Varietal differences were observed for all characters. Significant differences among nitrogen levels were noted for days to heading, plant height at harvest, tiller number at three growth stages, and number of panicles per hill. Nitrogen x variety interaction was significant for tiller number at 45DAT and % unfilled grains only.

The varieties headed from 81 to 97 days while final height ranges from 79.1 to 96.3 cms. The tiller number ranged from 14 to 28 tillers per hill. The highest number of panicle was 19 panicles/hill while the longest panicle recorded was 27.5 cms. The number of filled grains ranged from 74-9- and the heaviest grains (100-grain basis) weighed 2.7 grams. The highest yield was obtained from IR 29288-12-3-1-1-2 with 2677kg rough rice/ha while the lowest was recorded for IR 18818-87-2-2-2 with 1697kg rough rice/hectare.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1987 A42 S27

Document Type

Thesis

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