Electronic Theses and Dissertation

Rumput teki merupakan salah satu jenis gulma yang susah diberantas dan dapat
menurunkan hasil panen pada lahan pertanian. Pengendalian gulma ini dapat
menggunakan herbisida alami yang ramah lingkungan salah satunya, yaitu limbah
serai wangi. Serai wangi merupakan tumbuhan yang mengandung senyawa kimia
yang dapat menghambat pertumbuhan gulma. Tujuan dari penelitian untuk
mengetahui pengaruh penambahan ragi dalam ekstrak limbah daun serai wangi
terhadap pengendalian rumput teki. Penelitian ini menggunakan metode eksperimen,
rancangan yang digunakan adalah Rancangan Acak Lengkap (RAL) non faktorial
terdiri dari 6 perlakuan dan 4 ulangan. Perlakuan yang digunakan adalah P0 (Kontrol
negatif), P1 (1 ltr ekstrak limbah daun serai wangi ditambah 60 gram ragi), P2 (1 ltr
ekstrak limbah daun serai wangi ditambah 70 gram ragi), P3 (1 ltr ekstrak limbah
daun serai wangi ditambah 80 gram ragi), P4 (1 ltr ekstrak limbah daun serai wangi
ditambah 90 gram ragi) dan P5 (1 ltr ekstrak limbah daun serai wangi ditambah 100
gram ragi). Parameter penelitian adalah waktu dan mortalitas rumput teki. Data
dianalisis menggunakan Analisis Varian (ANAVA) dan akan dilanjutkan berupa uji
Jarak Nyata Duncan (JNTD). Hasil penelitian menunjukkan bahwa nilai Fhitung ˃
Ftabel pada taraf signifikan 0,05%. Simpulan penelitian ini adalah penambahan ragi
dalam ekstrak limbah daun serai wangi dapat mengendalikan rumput teki.
Kata Kunci: Rumput teki, limbah serai wangi, ragi, herbisida alami

Tackle grass is one type of weed that is difficult to eradicate and can reduce crop yields on agricultural land. reduce crop yields on agricultural land. This weed control can use natural herbicides that are environmentally friendly, one of which is citronella waste. citronella waste. Citronella is a plant that contains chemical compounds that can inhibit weed growth. that can inhibit weed growth. The purpose of the study was to determine the effect of the addition of yeast in citronella leaf waste extract on the control of teki grass. on the control of weed grass. This research uses an experimental method, the design used is a non-factorial Completely Randomized Design (CRD) consisting of 6 treatments and 4 replicates. consisting of 6 treatments and 4 replicates. The treatments used were P0 (negative control), P1 (1 l negative control), P1 (1 ltr citronella leaf waste extract plus 60 grams of yeast), P2 (1 ltr citronella leaf waste extract plus 70 grams of yeast), P3 (1 ltr of citronella leaf waste extract plus citronella leaf waste extract plus 80 grams of yeast), P4 (1 ltr citronella leaf waste extract plus 90 grams of yeast) and P4 (1 ltr citronella leaf waste extract plus 90 grams of yeast). plus 90 grams of yeast) and P5 (1 ltr of citronella leaf waste extract plus 100 gram yeast). The research parameters were time and mortality of weed. Data analyzed using Analysis of Variance (ANOVA) and will be continued in the form of Duncan's Real Distance Test (JNTNT). Real Distance Duncan (JNTD) test. The results showed that the value of Fcount ˃ Ftable at a significant level of 0.05%. The conclusion of this research is the addition of yeast in citronella leaf waste extract can control weed. Keywords: Citronella grass, citronella waste, yeast, natural herbicide