Indriani, Liza and Prof. Dr. Ir. Sugeng Prijono, SU. (2022) Kapasitas Retensi Air dan Sifat Fisik Tanah padaLahan Jeruk (Citrus L.) di Kecamatan Dau, Kabupaten Malang. Sarjana thesis, Universitas Brawijaya.
Abstract
Perkembangan potensi wilayah Kecamatan Dau menjadi tempat wisata kebun jeruk bisa menjadi pendukung alihguna lahan.Alih guna lahan yang bisa terjadi di Kecamatan Dau dari hutan menjadi perkebunan. Penggunaan lahan yang berbeda membuatretensi air tanah akan berbeda pula dikarenakan sifat fisik tanah dibawahnya yang berbeda. Kapasitas retensi air sangat berpengaruh terhadap kondisi dan keberhasilan suatu lahan khususnya pertanian.Penelitian ini bertujuan untuk mendapatkan informasi mengenai perbedaan manajemen tanah terhadap retensi air sertauntuk mengetahui hubungan antara karakteristik tanah dan retensi air. Lokasi pengambilan sampel tanah dilakukan pada lahan jeruk+kopi (L1), jeruk non understory (L2), jeruk+understory (L3) di Kecamatan Dau, Kabupaten Malang. Penelitian ini sudah dilaksanakan pada bulan Januari hingga Oktober 2022. Analisis Laboratorium dilakukan di Laboratorium Fisika dan Kimia Tanah Fakultas Pertanian Brawijaya.Parameter yag digunakan anatar lain: retensi air,bahan organik tanah, tekstur, berat isi, berat jenis, porositas, dan sebaran pori. Penelitian ini menggunakan rancangan acak kelompok,jika hasilnya signifikan dilakukan uji lanjut dengan DMRT 5%. Analisis selanjutnya dilakukan uji korelasi untuk mengetahui hubungan terkuat antara variabel bebas dengan variabel terikat dan uji regresi untuk mengetahui pengaruh variabel bebas terhadap variabel terikat. Nilai rata-rata retensi air yang tertinggi terdapat pada manajemen tanah lahan jeruk + kopi (L1) sebesar 9,23% dan nilai terendah sebesar 7,98% pada manajemen tanah lahan jeruk non understory (L2). Manajemen tanah lahan jeruk + kopi (L1) memiliki vegetasi yang lebih menaungi tanah dibawahnya dengan tutupan kanopi yang tinggi yaitu 76,443%. Manajemen tanah pada lahan tersebut juga memiliki bahan organik tanah tertinggi sebesar 1,97 %. Bahan organik tanah dan tutupan kanopi tanah akan mengurangi pemadatan tanah sehingga porositas tanah meningkat dan agregasi tanah menjadi stabil. Agregasi yang stabil akan menurunkan presentase pori makro sehingga kapasitas menahan air semakin besar.Karakteristik tanah yang memiliki hubungan dengan nilai retensi air yaitu bahan organik tanah sebesar 0,85, berat isi sebesar -0,88, berat jenis sebesar -0,82, porositas sebesar 0,91, pori makro sebesar 0,87, dan pori mikro sebesar -0,90. Bahan organik tanah, berat isi, berat jenis, dan porositas termasuk ke dalam kategori korelasi tinggi. Nilai koefisien determinasi (R2)sebesar 0,9104 atau sebesar 91,04 % menunjukkan bahwa faktor karakteristik tanah tersebut memiliki pengaruh terhadap peningkatanretensi air sebesar 91,04 % sedangkan 8,96 % dipengaruhi oleh faktor lain.
English Abstract
The development of the potential of the Dau District area to become a tourist spot for orange groves can support land use change. Land use change that can occur in Dau District from forests to plantations. Different land uses make groundwater retention different due to the different physical properties of the soil beneath. Water retention capacity is very influential on the condition and success of a land, especially agriculture. This study aims to obtain information on differences in soil management on water retention and to determine the relationship between soil characteristics and water retention. Soil sampling locations were carried out in citrus + coffee (L1), non-understory oranges (L2), and citrus + understory (L3) fields in Dau District, Malang Regency. This research was carried out from January to October 2022. Laboratory analysis was carried out at the Soil Physics and Chemistry Laboratory, Faculty of Agriculture, Brawijaya. Parameters used include: water retention, soil organic matter, texture, bulk density, specific gravity, porosity, and pore distribution. This study used a randomized block design, if the results were significant a follow-up test was carried out with a 5% DMRT. Next, a correlation test was carried out to determine the strongest relationship between the independent variables and the dependent variable and a regression test to determine the effect of the independent variables on the dependent variable. The highest average value of water retention was found in citrus + coffee land management (L1) of 9,23 % and the lowest value was 7,98% in non-understory citrus land management (L2). Soil management of citrus + coffee land (L1) has vegetation that overshadows the soil below with a high canopy cover of 76,443%. Soil management on this land also has the highest soil organic matter of 1,97%. Soil organic matter and soil canopy cover will reduce soil compaction so that soil porosity increases and soil aggregation becomes stable. Stable aggregation will reduce the percentage of macropores so that the water holding capacity is greater. Soil characteristics that have a relationship with the water retention value are soil organic matter of 0,85, bulk density of -0,88, specific gravity of -0,82, porosity of 0,91, macropores of 0,87, and micropores of -0,90. Soil organic matter, bulk density, specific gravity, and porosity are included in the high correlation category. The coefficient of determination (R2) value of 0,9104 or 91,04% indicates that the soil characteristic factors have an influence on increasing water retention by 91,04 % while 8,96% is influenced by other factors.
Item Type: | Thesis (Sarjana) |
---|---|
Identification Number: | 0522040588 |
Subjects: | 300 Social sciences > 338 Production > 338.1 Agriculture > 338.16 Production efficiency |
Divisions: | Fakultas Pertanian > Agroekoteknologi |
Depositing User: | PKN 01 UB |
Date Deposited: | 08 Jun 2023 01:11 |
Last Modified: | 08 Jun 2023 01:11 |
URI: | http://repository.ub.ac.id/id/eprint/201115 |
Text (DALAM MASA EMBARGO)
Liza Indriani.pdf Restricted to Registered users only until 31 December 2024. Download (3MB) |
Actions (login required)
View Item |