Electronic Theses and Dissertation

Besarnya daya persaingan gulma tergantung pada beberapa faktor diantaranya jumlah individu gulma, bobot gulma, jenis gulma, siklus hidup gulma, dan periode adanya gulma pada tanaman. Penelitian ini bertujuan untuk mengetahui pengaruh jenis dan dosis mulsa organik, serta interaksi diantara kedua faktor terhadap karakteristik gulma pada tanaman kedelai. Penelitian ini dilaksanakan di Kebun Percobaan Fakultas Pertanian dan Laboratorium Pengelolaan Gulma Fakultas Pertanian Universitas Syiah Kuala Darussalam Banda Aceh. Penelitian ini dilaksanakan dari Agustus – November 2022. Rancangan yang digunakan adalah Rancangan Acak Kelompok pola faktorial 3 x 4 dengan 3 ulangan. Faktor yang diteliti adalah jenis dan dosis mulsa organik. Faktor jenis mulsa organik terdiri dari 3 taraf yaitu eceng gondok, jerami padi dan kirinyuh. Faktor dosis mulsa organik terdiri dari 4 taraf yaitu 0, 8, 16 dan 24 ton ha-1. Peubah yang diamati yaitu persentase penutupan gulma, spesies gulma, individu gulma, bobot kering gulma dan koefisien komunitas yang diamati pada 21 dan 42 HST. Hasil penelitian menunjukkan bahwa dosis mulsa organik berpengaruh terhadap persentase penutupan gulma, spesies gulma, individu gulma dan bobot kering gulma. Dosis 24 ton ha-1 dapat menurunkan persentase penutupan gulma, spesies gulma, individu gulma dan bobot kering gulma. Terdapat interaksi antara jenis dan dosis mulsa organik terhadap persentase penutupan gulma. Jenis mulsa kirinyuh dengan dosis 24 ton ha-1 dapat menurunkan persentase penutupan gulma pada 42 HST.
Kata kunci : Jenis dan dosis mulsa, karakteristik gulma, kedelai

The amount of weed competiveness depends on several factors including the number of individual weeds, weed weight, weed type, weed life cycle, and the period of weed presence in plants. This research aims to determine the effect of the type and dosage of organic mulch and interaction between the two factors to weed characteristics in soybean. This research was conducted at the Experimental Farm of the Faculty of Agriculture and Weed Management Laboratory of the Faculty of Agriculture, Syiah Kuala Darussalam University, Banda Aceh. This research was carried out from August to November 2022. The design used was a 3 x 4 factorial randomized completely block design with 3 replications. The organic mulch type factor consisted of 3 levels, namely water hyacinth, rice straw and siam weed. The dosage factor for organic mulch consisted of 4 levels, namely 0, 8, 16 and 24 tons ha-1. The observed variables were weed cover percentage, weed species, individual weeds, weed dry weight and community coefficients observed at 21 and 42 HST. The results showed that the dose of organic mulch affected the weed cover percentage, weed spesies, individual weeds and weed dry weight. A dose of 24 tons ha-1 can reduce weed cover percentage, weed spesies, individual weeds and weed dry weight. There is an interaction between the type and dosage of organic mulch on the percentage of weed cover. Siam weed mulch type with a dose of 24 tons ha-1 can reduce the percentage of weed cover at 42 HST. Keywords: Types and dosages of mulch, weed characteristics, soybean.