Electronic Theses and Dissertation

Ringkasan ibnu yasier. aplikasi jenis mikoriza untuk pertumbuhan dan hasil beberapa varietas kacang tanah (arachis hypogaea l.) pada ultisol di bawah bimbingan syakur sebagai pembimbing ketua dan helmi sebagai pembimbing anggota. penelitian ini bertujuan untuk mengetahui sejauh mana pengaruh aplikasi jenis mikoriza dan varietas kacang tanah serta interaksi antara keduanya terhadap pertumbuhan dan hasil pada ultisol. penelitian ini dilaksanakan di kebun percobaan, laboratorium hortikultura, laboratorium biologi tanah fakultas pertanian universitas syiah kuala, darussalam banda aceh dan laboratorium balai pengkajian teknologi pertanian aceh, mulai bulan november 2017 sampai dengan februari 2018. rancangan yang digunakan adalah rancangan acak kelompok pola faktorial 4x4 dengan 3 ulangan, dimana jenis mikoriza terdiri dari kontrol, glomus sp, gigaspora gigantea dan acaulospora tuberculata dan varietas kacang tanah terdiri dari tuban, hypoma, bima dan kelinci. peubah yang diamati adalah analisis tanah awal, (ph tanah dan p-tersedia), tinggi tanaman, diameter batang dan jumlah cabang per tanaman umur 15, 30 dan 45 hari setelah tanam, panjang akar, berat berangkasan segar, berat berangkasan kering, serapan p, jumlah buah per tanaman, jumlah polong per tanaman, jumlah polong hampa per tanaman, berat polong per tanaman dan persentase kolonisasi akar fungi mikoriza arbuskula pada akar tanaman. hasil penelitian menunjukkan bahwa jenis mikoriza berpengaruh sangat nyata terhadap ph tanah tinggi tanaman umur 45 hari setelah tanam, diameter batang umur dan jumlah cabang 15, 30 dan 45 hari setelah tanam, panjang akar, berat berangkasan segar, berat berangkasan kering, serapan p, jumlah buah per tanaman, jumlah polong per tanaman, jumlah polong hampa per tanaman, berat polong per tanaman dan persentase kolonisasi akar fungi mikoriza arbuskula serta berpengaruh nyata terhadap p-tersedia namun tidak berpengaruh nyata terhadap tinggi tanaman umur 15 dan 30 hari setelah tanam. adapun jenis mikoriza terbaik dijumpai pada jenis mikoriza glomus sp. varietas kacang tanah berpengaruh sangat nyata terhadap ph tanah, tinggi tanaman umur 15, 30 dan 45 hari setelah tanam, jumlah cabang umur 45 hst, berat berangkasan segar, berat berangkasan kering, serapan p, jumlah buah per tanaman, jumlah polong per tanaman dan berat polong per tanaman serta berpengaruh nyata terhadap p-tersedia, jumlah cabang umur 15 dan 30 hst namun tidak berpengaruh nyata terhadap diameter batang umur 15, 30 dan 45 hst, panjang akar, jumlah polong hampa per tanaman dan persentase kolonisasi akar fungi mikoriza arbuskula. adapun varietas terbaik dijumpai pada varietas bima. terdapat interaksi yang sangat nyata terhadap ph tanah, p-tersedia, jumlah cabang per tanaman umur 30 dan 45 hari setelah tanam, berat berangkasan segar, serapan p dan jumlah polong per tanaman. adapun kombinasi perlakuan terbaik dijumpai pada jenis mikoriza gigaspora gigantea dengan varietas bima. kata kunci : mikoriza, varietas kacang tanah, ultisol. ? summary ibnu yasier. the application kind of mycorrhiza and yield of some varieties of peanut (arachis hypogaea l.) on ultisol under the guidance syakur as supervisor and helmi as co-supervisor. this objective of experiment is to study the influence of the application kind of mycorrhiza and varieties of peanut on growth and yield on ultisol. the research was conducted in at the experimental field, laboratory of plant diseases, laboratory of soil biology, faculty of agriculture, universitas syiah kuala darussalam, banda aceh, and in laboratory of the agency for agricultural technology studies of aceh, started from november 2017 until february 2018. the experimental design used a randomized block design with factorial pattern 4x4 with three replications, where application kind of mycorrhiza consisted of control, glomus sp, gigaspora gigantea, and acaulospora tuberculata and the varieties of peanut consisted of tuban, hypoma, bima and kelinci. the observed parameters were (ph soil and p-available), plant of height, stem diameter and number of branches at age 15, 30 and 45 the day after planting (dap), the length of the roots, fresh biomass weight, dry biomass weight, p uptake, number of pods, number of empty pods, pod weight, and the percentage of colonization of arbuscular mycorrhizal fungi on root plant. the result of the experiment showed that the kind of mycorrhiza had significant effect on plant height at 45 dap, stem diameter and the number of branch at 15, 30 and 45 dap, the length of roots, fresh biomass weight, dry biomass weight, p uptake, number of pods, number of empty pods, pod weight, and the percentage of root colonization and had a significant effect p-available, however there was no significant effect on plant of height at 15 and 30 dap. the best kind of mycorrhiza was glomus sp. varieties of peanut had highly significant effect on soil ph, plant height at 15, 30 dan 45 dap, number of branches at 45 dap, fresh biomass weight, dry biomass weight, p uptake, number of pods and the weight of pod as well as had a significant effecton p-available, number of branch at 15 and 30 dap. there was no significant effect on stem diameter at 15, 30 and 45 dap, the length of roots, number of empty pods and the percentage of root colonization. the best varieties of peanut was bima. there was significant interaction effect on soil ph, p-available, number of branch at 30 and 45 dap, fresh biomass weight, p uptake and number of pods. the best treatment was the combination of gigaspora gigantea and varieties of bima. keywords: mycorrhiza, varieties of peanut, ultisol.