@article{Pamungkas_Sembodo_Evizal_Pujisiswanto_2019, title={Efikasi Herbisida Isopropilamina Glifosat Dalam Mengendalikan Gulma Perkebunan Karet (Hevea Brasiliensis) Belum Menghasilkan}, volume={18}, url={https://jurnal.polinela.ac.id/jppt/article/view/1071}, DOI={10.25181/jppt.v18i2.1071}, abstractNote={<p>Rubber (Hevea brasiliensis) is an important plantation crop in Indonesia because its <br />products are used as raw material for rubber industry and source of stock-exchange. The <br />existence of weeds on the rubber land causes competition of growing facilities and affect the <br />growth of rubber plants. One of the most common herbicide active ingredients that used to <br />control immature plant weeds is isopropylamine glyphosate. This research aims to (1) find <br />out the dose of isopropylamine glyphosate herbicide that effectively control weeds in <br />immature rubber cultivation, (2) to know the change of weed’s composition due to the <br />application of isopropylamine glyphosate herbicide, (3) to know whether the phytotoxicity of <br />rubber plants occurs due to isopropylamine glyphosate herbicide application. This research <br />was conducted in smallholder rubber plantation in Marga Agung Village, Jati Agung <br />Subdistrict, South Lampung Regency and Weed Laboratory of Agriculture Faculty of <br />Lampung University from November 2016 until March 2017. This research used randomized <br />block design (RAK) with four replicates and six treatment levels dose of herbicide <br />isopropylamine glyphosate herbicide 796,5 g/ha (P1), 1062 g/ha (P2), 1327.5 g/ha (P3), <br />1593 g/ha (P4), mechanical weeding (P5), and without restraint/control (P6). The <br />homogeneity of various data was tested by Bartlett test, the data additivity was tested by <br />Tukey test, and the difference of median treatment was tested by Least Significant Different <br />(LSD) test at 5% level. The results showed that: (1) isopropylamine glyphosate herbicide <br />dose 796,5 – 1593 g/ha effectively controlling total weeds, grass weeds up to 12 weeks after <br />application and nut grass weeds up to 4 weeks after application, and dose 1593 g/ha <br />effectively controlling leaf weeds up to 8 weeks after application, (2) dose 1327,5 – 1593 <br />g/ha effectively controlling Ottochloa nodosa weeds up to 12 weeks after application and <br />Commelina diffuse up to 4 weeks after application, (3) dose 796,5 – 1593 g/ha effectively <br />controlling Cyperus brevifolius weeds up to 4 weeks after application, and doses of 1593 <br />g/ha effectively controlling Asystasia gangetica weeds up to 8 weeks after application, (4) <br />doses of 796,5 – 1593 g/ha resulted in changes in weed’s composition at 4, 8, and 12 weeks <br />after application, (5) doses 796,5 – 1593 g/ha does not poison the rubber plant.</p>}, number={2}, journal={Jurnal Penelitian Pertanian Terapan}, author={Pamungkas, Hendi and Sembodo, Dad R.J. and Evizal, Rusdi and Pujisiswanto, Hidayat}, year={2019}, month={May}, pages={101-109} }