Setiawan, Rizky Bagus (2017) Kerapatan Spora Mikoriza Dalam Tanah Di Sekitar Tanaman Pionir (Parasponia andersonii dan Trema orientalis) di Lereng Gunung Kelud. Sarjana thesis, Universitas Brawijaya.
Abstract
Erupsi gunung Kelud yang terjadi pada bulan Februari 2014 mengakibatkan pemadatan permukaan tanah, sehingga filtrasi tanah sangat terlambat. Reklamasi tanah yang dilakukan petani adalah dengan aplikasi pupuk kandang dan urea, namun demikian ketersediaan pupuk kandang di lokasi kejadian sangat terbatas sehingga perlu dicari sumber alternatif lainnya. Bahan organik asal tanaman pionir lokal yaitu Parasponia andersonii (anggrung hijau) dan Trema orientalis (anggrung merah) pada lahan pertanian yang terdampak. Tujuan dari penelian ini adalah (1) mengetahui tingkat kerapatan spora mikoriza pada tanah-tanah yang ditumbuhi oleh Parasponia andersonii dan Trema orientalis. (2) mengetahui hubungannya dengan kadar C-organik dan P-tersedia dalam tanah di sekitarnya. Pengambilan contoh spora mikoriza dilakukan dengan survey di daerah aliran lahar dan lereng bawah gunung Kelud, di dusun Kutut, Desa Pandansari, Kecamatan Ngantang, Kabupaten Malang. Kegiatan penelitian dimulai pada bulan Mei sampai dengan Desember 2016. Contoh tanah diambil dari kedalaman 20 cm pada jarak 0,5 m, 1 m, 1,5 m dari batang tanaman pionir (Parasponia andersonii dan Trema orientalis yang dibandingkan dengan tanah di sekitar Jagung). Hasil pengamatan menunjukkan bahwa jumlah spora mikoriza dan presentase infeksi akar di sekitar akar Parasponia andersonii yaitu 228 spora/50g tanah dan 85% lebih tinggi dari pada di sekitar Trema orientalis dan Jagung rata-rata 165 spora/50g tanah dan 70%. Semakin jauh jarak pengambilan akar tanaman terhadap batang, maka presentase infeksi mikoriza semakin meningkat. Khususnya pada tanaman pionir Parasponia dan Trema, Sedangkan hal tersebut tidak terjadi pada tanaman Jagung. Variasi jumlah spora mikoriza dan infeksi akar tanaman di lokasi erupsi gunung Kelud tidak berhubungan dengan kandungan C-organik tanah, kecuali presentasi infeksi akar cenderung berhuhungan erat dengan kadar P-tersedia dalam tanah.
English Abstract
Mount Kelud eruption back in February 2014 had caused soil compaction, and thus decreased soil infiltration. Soil reclamation efforts have been made by applying manure and urea. However, source of manure nearby is scarce and therefore another alternative source is required. Some alternative organic matter sources could come from Parasponia andersonii and Trema orientalis (pigeon wood plant) nearby the eruption-affected farmland. The objectives of this research were (1) to determine mycorrhizal spore density within soils around Parasponia andersonii and Trema orientalis. (2) to determine its relationship with soil organic carbon and available phosphorus. Mycorrhizal spore sampling was carried out in a survey in Mount Kelud’s lava flow area and its lower slope, in Kutut Hamlet, Pandansari Village, Ngantang District, Malang Regency. This research was conducted from May until December 2016. Soil samples were collected from 20 cm depth, at a distance of 0.5 m, 1 m, and 1.5 m from a pioneer plant’s stalk (Parasponia andersonii and Trema orientalis, compared to soil around corn plantations). Observation results showed that mycorrhizal spore density and infection percentage around Parasponia andersonii’s roots were, respectively, 228 spore’s/50g of soil and 85% infection. This result was higher than that of Trema orientalis and corn plantations with the average of 165 spores/50g of soil and 70% mycorrhizal infection. The further sampling distance was from plant stalk, the higher percentage of mycorrhizal infection was found. This pattern was evident especially in soils around Parasponia and Trema, yet was not evident around corn plantations. Mycorrhizal spore abundance and infection percentage in Mount Kelud eruption site are not related to soil organic carbon, however mycorrhizal infection percentage is closely related to soil available phosphorus.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FP/2017/337/051706860 |
| Uncontrolled Keywords: | Pionir (Parasponia andersonii dan Trema orientalis), Spora Mikoriza, Tanah, Erupsi Gunung Kelud |
| Subjects: | 600 Technology (Applied sciences) > 631 Specific techniques; apparatus, equipment materials > 631.4 Soil science > 631.46 Soil biology |
| Divisions: | Fakultas Pertanian > Ilmu Tanah |
| Depositing User: | Yusuf Dwi N. |
| Date Deposited: | 02 Nov 2017 01:24 |
| Last Modified: | 21 Sep 2020 06:09 |
| URI: | http://repository.ub.ac.id/id/eprint/4711 |
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