i
i ABSTRACT
MUHAMMAD ALFI KHAIRA : Seed bank Distribution of Eleusine indica Glifosat-Resistant Around The Oil Palm Circle Adolina Estate PTPN IV Serdang Bedagai. Supervised by Edison Purba and Irsal.
Eleusine indica is one of weeds that had negative effects which is commonly found in oil palm plantation and the exercise of this weeds around the circle weeding of palm in Adolina Estate, PTPN IV Perbaungan has been reported that the population was difficult to control with glyphosate. This research aims to specify the seed bank distribution of E. indica glifosat-resistant biotype around the palm oil circle horizontally and vertically. This research carried out in survey method and field experiment. Glyphosate was applied along the radius of circle weeding at 720 g a.i.ha-1.
The results showed that the closer to the palm oil circle the less number of E. indica seed bank. While the reduction in the number of goosegrass seeds in the soil is directly correlated to soil depth. The more depth of soil the less number of seed bank.
Key words : Seed bank, Resistant, Glifosat, Palm Oil
ii
ii ABSTRAK
MUHAMMAD ALFI KHAIRA : Distribusi Seed Bank Eleusine indica Resisten-Glifosat di Sekitar Piringan Kelapa Sawit Kebun Adolina PTPN IV Serdang Bedagai. Dibimbing oleh Edison Purba dan Irsal.
Gulma Eleusine indica merupakan salah satu gulma yang cukup berpengaruh negatif yang biasa ditemukan pada perkebunan sawit dan keberadaan gulma di sekitar penyemprotan piringan kelapa sawit di Kebun Adolina, PTPN IV diketahui semakin sulit untuk dikendalikan dengan glifosat. Penelitian ini bertujuan untuk menentukan distribusi seed bank Eleusine indica resisten-glifosat di sekitar piringan kelapa sawit secara horizontal dan vertikal. Penelitian ini menggunakan metode survei dan eksperimental lahan. Glifosat yang digunakan di sepanjang radius penyemprotan piringan yaitu 720 g b.a/ha-1.
Hasil penelitian ini menunjukkan bahwa semakin dekat dengan piringan kelapa sawit maka jumlah seed bank E. indica semakin sedikit. Sedangkan berkurangnya jumlah biji E. indica didalam tanah berhubungan dengan pertambahan kedalaman tanah. Semakin dalam tanah semakin sedikit jumlah seed bank.
Kata kunci : Seed bank, Resisten, Glifosat, Kelapa sawit
