Gangga Prastita Sari, Gangga and Herry Susanto, Herry and Hidayat, Kuswanta Futas and Hidayat, Pujisiswanto (2020) EFIKASI HERBISIDA PARAKUAT DIKLORIDA TERHADAP PERTUMBUHAN GULMA DAN TANAMAN SERTA HASIL KEDELAI (Glycine max L. Merr). AGROTEK TROPIKA, 8 (3). pp. 575-583. ISSN 2337-4993

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The presence of weeds in soybean cultivation causes a decrease in quality and production. Therefore we need a management action, namely weed control. One method of controlling weeds is chemically using herbicides. The herbicide used in this study was the herbicide paraquat dichloride. The herbicide is contact in nature so it is expected to quickly control weeds. This study aims to determine the dose of herbicide paraquat dichloride which is effective in controlling weeds on soybean cultivation, to determine whether there has been a change in weed composition due to the application of herbicide paraquat dichloride, and to determine whether there is phytotoxicity and inhibition of growth and yield of soybean due to the application of herbicide paraquat dichloride. The research was conducted in the land of farmers in Pemanggilan Natar District, South Lampung Regency and the Weed Laboratory of the Faculty of Agriculture, University of Lampung from February to May 2019. The study used a randomized block design (RBD) with four replications and six treatments, namely the herbicide paraquat dichloride dose of 405 g / ha, 540 g / ha, 675 g / ha, 810 g / ha, manual weeding and control. Homogeneity of various data was tested by Bartlett’s test, data additivity was tested by Tukey’s test, and mean differences were tested with Least Significant Difference (LSD) at the 5% level. The results showed that: Paraquat dichloride herbicide dose of 405-810 g / ha was effective in controlling total weeds, broad leaf weeds, grass class weeds and dominant weeds (Croton hirtus, Mimosa invisa, Rottboellia exaltata, and Synedrella nodiflora) in the soybean plant area up to 6 week after application. The herbicide paraquat dichloride caused changes in weed composition between 29-49% at 3 weeks after application and 23-38% at 6 weeks after application. The application of the herbicide paraquat dichloride at a dose of 405 - 810 g / ha caused mild phytotoxicity with a toxicity range of 5–20%, a dose of 405–810 g / ha did not inhibit growth and soybean production was lower in herbicide treatment doses of 405 - 675 g / ha.

Item Type: Article
Subjects: S Agriculture > S Agriculture (General)
Date Deposited: 19 Jan 2022 05:40
Last Modified: 19 Jan 2022 05:40

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