Susanto, Herry and Sembodo, Dad R.J. and Evizal, Rusdi and Rochmah, Aulia (2018) UJI RESISTENSI GULMA Eleusine indica DARI PERKEBUNAN JAMBU BIJI DI LAMPUNG TIMUR TERHADAP HERBISIDA PARAKUAT Weed resistance trial of Eleusine indica from guava estate in East Lampung to paraquat. Prosiding Seminar Nasional XX Himpunan Ilmu Gulma Indonesia. pp. 39-48.

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Abstract

ABSTRACT Eleusine indica as a dominant weed of the guava estate in East Lampung for several years later, so we need to know the response this weed to paraquat herbicide that usually apply to control weed at this area. The objectives of this experiment has known value of median effective dose (ED50), median lethal time (LT50), and resistence index ratio (R/S) of Eleusine indica at longterm applied and unapplied paraquat herbicide. The experiment was arranged random block design with three replications, there were 2 factors such as weed growth area and paraquat herbicide rates. The efficacy percentage of weed showed in graphic and median lethal time (LT50) was calculated to probit analysis. Dry weight biomass of weed was conversed to the percent of damage and then calculated with probit analysis to know the value of ED50. ED50 value of two areas weed compered to calculate the resistance index ratio. The result showed ED50 of E. indica from longterm area paraquat applied was 779.26 g/ha but ED50 of E. indica from unapplied was 230.94 g/ha. The LT50 value of E indica from longterm applied paraquat area higher than unapplied area. Resistance index ratio of E. indica was 3.37 which classify to low resistance. Key words: Weed, Eleusine indica, paraquat, resistance

Item Type: Article
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian (FP) > Prodi Agroteknolgi
Depositing User: HERRY SUSA
Date Deposited: 15 Nov 2018 08:09
Last Modified: 15 Nov 2018 08:09
URI: http://repository.lppm.unila.ac.id/id/eprint/10020

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