Influence of ammonium sulfate on the efficacy of bentazon against Scripus maritimus L.

Edna L. Oña

Date

10-1978

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Beatriz L. Mercado

Abstract

In the Philippine, the use of bentazon in most of the difficult to control weeds in grass-like crops is limited by its high cost and unavailability in the market. Using ammonium sulfate as an additive, the possibility of reducing bentazon dosage nevertheless increasing its activity was looked into.

The data were analyzed using 5 x 5 factorial in randomized complete block design.

No bentazon phytotoxicity was observed in rice whether bentazon and ammonium sulfate were applied alone or in combination. A very good control of Scirpus naritimus was observed at bentazon dosage of 0.50 kg/ha added with 5% ammonium sulfate.

S. maritimus sprout count at 6 weeks after sewing decreased significantly (P/_.05) when sprayed with 2% ammonium sulfate + 0.25 kg/ha bentazon than whensprayed with bentazon alone.

Increasing bentazon level with increasing ammonium sulfate proportionately increased rice yield.

The doses of ammonium sulfate was unimportant as far as decrease in shoot height at 35 DAT and tuber count were concerned.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1978 A42 O43

Document Type

Thesis

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