Effect of Spacing and Weed Control on Yield and Agronomic Characters of Delayed Transplanted Rice

Date

9-1979

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Basilio B. Mabbayad

Abstract

An experiment was conducted to determine the effect of weeding, spacing, age of seedling and their interactions on yield and agronomic performance of UPL Ri-2 (Intan x Bengawan).

Weeding showed a marked effect on the parameters investigated with a yield increase of 1.114 tons per hectare.

Spacing significantly affected all parameters except HI and 100 grain weight. Higher LAI and grain yield was obtained at 40 x 5 cm. spacing. However, taller plants and higher number of tillers and panicles was obtained at 20 x 20 cm. spacing values obtained for other spacings (10 x 13.3 cm and 15 x 15 cm.) did not show significant differences.

Age seedling haf likewise affected significantly all parameters except for numer of panicles per hill.

Twenty day-old seedlings performed better through 40 day-old seedlings had heavier grain weight.

Tiller counts and number of panicle per hill were significantly affected by weeding, spacing and age interactions. On the other hand, unfilled grains was significantly affected by spacing and age interactions and interaction of three factors investigated, HI, LAI and grain yield were significantly affected by spacing and age interactions.

Weed density and weed weight were significantly higher at 20 x 20 cm. spacing than in 40 x 5 spacing. Age od seedlings failed to show significant effect on weed density and weed weight. No significant effect of age and spacing interactions were obtained for weed weight at 20 and 10 DAT.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1979 A42 P38

Document Type

Thesis

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