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Pamungkas, Hendi
Politeknik Negeri Lampung.
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Efikasi Herbisida Isopropilamina Glifosat Dalam Mengendalikan Gulma Perkebunan Karet (Hevea Brasiliensis) Belum Menghasilkan Pamungkas, Hendi; Sembodo, Dad R.J.; Evizal, Rusdi; Pujisiswanto, Hidayat
Jurnal Penelitian Pertanian Terapan Vol 18, No 2 (2018)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (22.827 KB) | DOI: 10.25181/jppt.v18i2.596

Abstract

Karet (Hevea brasiliensis) merupakan tanaman perkebunan penting di Indonesia karena produknya digunakan sebagai bahan baku industri karet dan sumber devisa negara. Keberadaan gulma pada lahan karet menyebabkan terjadinya persaingan sarana tumbuh dan mempengaruhi pertumbuhan tanaman karet. Salah satu bahan aktif herbisida yang umum digunakan untuk mengendalikan gulma pertanaman karet TBM adalah isopropilamina glifosat. Penelitian ini bertujuan untuk (1) mengetahui dosis herbisida isopropilamina glifosat yang efektif mengendalikan gulma pada pertanaman karet TBM, (2) mengetahui perubahan komposisi gulma akibat aplikasi herbisida isopropilamina glifosat, (3) mengetahui apakah terjadi fitotoksisitas tanaman karet akibat aplikasi herbisida isopropilamina glifosat. Penelitian ini dilakukan di kebun karet rakyat di desa Marga Agung, Kecamatan Jati Agung, Kabupaten Lampung Selatan dan Laboratorium Gulma Fakultas Pertanian Universitas Lampung pada November 2016 hingga Maret 2017. Penelitian ini menggunakan rancangan acak kelompok (RAK) dengan empat ulangan dan enam taraf perlakuan yaitu dosis herbisida isopropilamina glifosat 796,5 g/ha (P1), 1062 g/ha (P2), 1327,5 g/ha (P3), 1593 g/ha (P4), penyiangan mekanis (P5), dan tanpa pengendalian/control (P6). Homogenitas ragam data diuji dengan uji Bartlett, additivitas data diuji dengan uji Tukey, dan perbedaan nilai tengah perlakuan diuji dengan uji Beda Nyata Terkecil (BNT) pada taraf 5%. Hasil penelitian menunjukkan bahwa: (1) herbisida isopropilamina glifosat dosis 796,5 – 1593 g/ha efektif mengendalikan gulma total, gulma rumput hingga 12 MSA dan gulma teki hingga 4 MSA, serta dosis 1593 g/ha efektif mengendalikan gulma daun lebar hingga 8 MSA, (2) dosis 1327,5 – 1593 g/ha efektif mengendalikan gulma Ottochloa nodosa hingga 12 MSA dan Commelina diffusa hingga 4 MSA, (3) dosis 796,5 – 1593 g/ha efektif mengendalikan gulma Cyperus brevifolius hingga 4 MSA, serta dosis 1593 g/ha efektif mengendalikan gulma Asystasia gangetica hingga 8 MSA, (4) dosis 796,5 – 1593 g/ha menyebabkan terjadinya perubahan komposisi gulma pada 4, 8, dan 12 MSA, (5) dosis 796,5 – 1593 g/ha tidak meracuni tanaman karet. Kata kunci: Gulma, herbisida, isopropilamina glifosat, karet
Efikasi Herbisida Isopropilamina Glifosat Dalam Mengendalikan Gulma Perkebunan Karet (Hevea Brasiliensis) Belum Menghasilkan Pamungkas, Hendi; Sembodo, Dad R.J.; Evizal, Rusdi; Pujisiswanto, Hidayat
Jurnal Penelitian Pertanian Terapan Vol 18, No 2 (2018)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (423.129 KB) | DOI: 10.25181/jppt.v18i2.1071

Abstract

Rubber (Hevea brasiliensis) is an important plantation crop in Indonesia because its products are used as raw material for rubber industry and source of stock-exchange. The existence of weeds on the rubber land causes competition of growing facilities and affect the growth of rubber plants. One of the most common herbicide active ingredients that used to control immature plant weeds is isopropylamine glyphosate. This research aims to (1) find out the dose of isopropylamine glyphosate herbicide that effectively control weeds in immature rubber cultivation, (2) to know the change of weed’s composition due to the application of isopropylamine glyphosate herbicide, (3) to know whether the phytotoxicity of rubber plants occurs due to isopropylamine glyphosate herbicide application. This research was conducted in smallholder rubber plantation in Marga Agung Village, Jati Agung Subdistrict, South Lampung Regency and Weed Laboratory of Agriculture Faculty of Lampung University from November 2016 until March 2017. This research used randomized block design (RAK) with four replicates and six treatment levels dose of herbicide isopropylamine glyphosate herbicide 796,5 g/ha (P1), 1062 g/ha (P2), 1327.5 g/ha (P3), 1593 g/ha (P4), mechanical weeding (P5), and without restraint/control (P6). The homogeneity of various data was tested by Bartlett test, the data additivity was tested by Tukey test, and the difference of median treatment was tested by Least Significant Different (LSD) test at 5% level. The results showed that: (1) isopropylamine glyphosate herbicide dose 796,5 – 1593 g/ha effectively controlling total weeds, grass weeds up to 12 weeks after application and nut grass weeds up to 4 weeks after application, and dose 1593 g/ha effectively controlling leaf weeds up to 8 weeks after application, (2) dose 1327,5 – 1593 g/ha effectively controlling Ottochloa nodosa weeds up to 12 weeks after application and Commelina diffuse up to 4 weeks after application, (3) dose 796,5 – 1593 g/ha effectively controlling Cyperus brevifolius weeds up to 4 weeks after application, and doses of 1593 g/ha effectively controlling Asystasia gangetica weeds up to 8 weeks after application, (4) doses of 796,5 – 1593 g/ha resulted in changes in weed’s composition at 4, 8, and 12 weeks after application, (5) doses 796,5 – 1593 g/ha does not poison the rubber plant.
Co-Authors Dad R.J. Sembodo, Dad R.J. Hidayat Pujisiswanto Rusdi Evizal