Komang Ardiyasa, 0914071036 (2015) PENGARUH FRAKSI PENIPISAN AIR TANAH TERSEDIA TERHADAP PERTUMBUHAN DAN HASIL PADA TIGA VARIETAS KEDELAI (Glycine Max (L) Merril). Fakultas Pertanian, Universitas Lampung.
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Abstrak (Berisi Bastraknya saja, Judul dan Nama Tidak Boleh di Masukan)
Penelitian ini bertujuan untuk mengetahui pengaruh fraksi penipisan air tanah tersedia terhadap pertumbuhan dan hasil pada 3 varietas kedelai. Penelitian ini dilakukan di laboratorium Teknik Pertanian(TEP) Fakultas Pertanian Universitas Lampung dan di lahan milik PT. Great Giant Pineapple(GGP). Penelitian berlangsung pada bulan September 2013 sampai dengan Januari 2014. Penelitian ini menggunakan rancangan faktorial dalam rancangan acak lengkap dengan faktor pertama adalah fraksi penipisan air tanah tersedia (p) yang terdiri dari tiga taraf perlakuan (p) yaitu p1 (p=0,2 ATT), p2 (p=0,4 ATT) dan p3 (p=0,6 ATT). Faktor kedua yakni varietas kedelai yang terdiri dari tiga varietas yaitu V1=Wilis, V2=Kaba, dan V3=Tanggamus dan diulang tiga kali. Irigasi dilakukan apabila kadar air tanah telah mendekati atau berada pada batas fraksi penipisan air tanah tersedia yang telah ditentukan dengan pengukuran kadar air pada gypsum block dengan alat ohm meter. Irigasi dilakukan dengan mengembalikan keadaan kadar air pada kapasitas lapang (field capacity). Perlakuan fraksi penipisan air tanah tersedia bagi tanaman berpengaruh terhadap pertumbuhan tanaman kedelai pada fase pertumbuhan varietas Wilis (V1), varietas Kaba (V2) dan varietas Tanggamus (V3). Dari data pengamatan sampai minggu ke-8 dari tiga varietas diketahui tanaman yang memiliki pertumbuhan batang tertinggi adalah varietas Kaba (55,87 cm) pada perlakuan p2 (p=0,4 ATT). Jumlah daun terbanyak yakni varietas Kaba (66,93 helai) pada perlakuan p2 (p=0,4 ATT). Produksi tertinggi yakni varietas Kaba (71,33gr) pada perlakuan p2 (p=0,4 ATT). Kebutuhan air irigasi tertinggi pada perlakuan p2 dengan jumlah irigasi 18 mm, diikuti perlakuan p3 dengan 13,5 mm dan perlakuan p1 dengan 9 mm. Rendahnya kebutuhan air irigasi dipengaruhi oleh curah hujan yang tinggi sebesar 578 mm dengan 32 hari hujan selama penelitian berlangsung. The objective of this research was to find out the influences of available soil water depletion fraction to growths and yields of three soybean varieties. This research was conducted in laboratory of Agricultural Engineering of Faculty of Agriculture in Lampung University and in the fields belonging to PT. Great Giant Pineapple (GGP). The research conducted from September 2013 to January 2014. This research used a factorial design in a completely randomized design with the first factor was the available soil water depletion fraction (p), which contained of three treatment levels of (p); they were p1 (p=0.2 AW), p2 (p=0.4 AW), and p3 (p= 0.6 AW). The second factor was soybean varieties containing of three varieties; V1 = Willis, V2 = Kaba, and V3 = Tanggamus, which were repeated three times. Irrigation was conducted when soil water levels was close to or above threshold of available soil water depletion which was determined by measuring water level at gypsum block and ohm meter device. Irrigation was conducted by returning water level to field capacity condition. Treatment of available soil water depletion fraction for the plants influences soybean in growth phase of Wilis (V1) variety, Kaba (V2) variety and Tanggamus (V3) variety. Observation data from in week 8 of three showed that the highest stem growth was in Kaba variety (55.87 cm) at p2 treatment (p=0.4 AW). The highest leave amount was Kaba variety (66.93 leaves) at treatment p2 (p=0.4 AW). The highest production was in Kaba variety (71,33gr) at treatment p2 (p=0.4 AW). The highest irrigation necessity was in treatment p2 with 18 mm water irrigation, and then followed by p3 with 13.5 mm and finally p1 with 9 mm. The low irrigation water necessity was influenced by high rainfall level of 578 mm with 32 rainy days during research.
| Jenis Karya Akhir: | Skripsi |
|---|---|
| Subyek: | > Pertanian ( Umum ) |
| Program Studi: | Fakultas Pertanian dan Pascasarjana > Prodi Teknik Pertanian |
| Pengguna Deposit: | 1295305 . Digilib |
| Date Deposited: | 15 Sep 2015 07:38 |
| Terakhir diubah: | 15 Sep 2015 07:38 |
| URI: | http://digilib.unila.ac.id/id/eprint/12840 |
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