0714071052, Muamar (2012) ANALISIS NERACA AIR TANAMAN JAGUNG (ZEA MAYS) DI BANDAR LAMPUNG. UNSPECIFIED.
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Abstrak (Berisi Bastraknya saja, Judul dan Nama Tidak Boleh di Masukan)
Abstrak Jagung (Zea Mays) merupakan salah satu tanaman pangan penting di Indonesia setelah padi. Kebutuhan masyarakat Indonesia terhadap tanaman pangan ini terus meningkat seiring dengan pertumbuhan penduduk yang semakin meningkat juga. Salah satu upaya peningkatan produktifitas guna mendukung program pengembangan agribisnis tanaman jagung adalah penyediaan air yang cukup untuk pertumbuhan tanaman. Penelitian ini bertujuan untuk (1) menghitung besarnya kebutuhan air tanaman jagung, (2) menghitung besarnya potensi air hujan yang dapat di manfaatkan dan ditampung, (3) menganalisis evapotranspirasi, laju perkolasi dan limpasan, dan (4) menghitung Kc tanaman. Penelitian dilaksanakan di Laboraturium Lapang Terpadu Fakultas Pertanian Universitas Lampung terhitung mulai tanggal 26 Agustus sampai 4 Desember 2011. Pengamatan lapangan dilakukan terhadap delapan plot percobaan dengan dua perlakuan dan empat kali ulangan. Perlakuan tersebut adalah menggunakan terpal (plot A) dan tanpa terpal (plot B) yang masing-masing dilengkapi dengan kolam penampungan air pada bagian hilirnya. Hasil penelitian menunjukan bahwa (1) total kebutuhan air konsumtif tanaman jagung (ETc) selama penelitian sebesar 614,3 mm, (2) total limpasan yang terjadi pada plot tanpa terpal adalah 37,24 mm, (3) perkolasi yang terjadi selama penelitian di plot lahan tanpa terpal sebesar 40,58 mm, (4) nilai koefisien tanaman jagung (Kc) rata-rata pada tahap perkembangan awal, tahap vegetatif, tahap pembungaan dan formasi biji, dan tahap penuaan masing-masing adalah 1,17; 1,37; 1,38; dan 1,19, dan (5) produktifitas penggunaan air pada plot A sebesar 1,88 kg/m3 dan pada plot B sebesar 2,48 kg/m3. Kata kunci: neraca air, jagung, evapotranspirasi, perkolasi, limpasan permukaan. Abstract Corn (Zea Mays) is one important crop in Indonesia after rice. Indonesia people needs this crop continuous by increase since Indonesian population is growing. One effort to support the production of corn is to supply adequate irrigation water. This aims of this research were (1) to calculate the amount of irrigation water required, (2) to quantify the potential rainwater can be harvested and use as irrigation, (3) to analyze the crop evapotranspiration, percolation and runoff rate, and (4) to determine Kc. Plot experiment was conducted at the Integrated Field Laboratory College of Agriculture, University of Lampung from 26 August to 4 December 2011. Field observation was carried out on two experimental treatments with four replicates, the treatment were plots with plastic liner (plot A) and without plastic liner (plot B) each equipped with a water storage pond at the downstream. The results showed that (1) the consumptive use (ETc) during the study water requirements of corn is 614,3 mm, (2) total runoff that occurs on the plot without plastic liner was 37,24 mm, (3) percolation that occurred during the study on the plot without plastic liner was 40,58 mm, (4) the corn crop coefficient (Kc) on average in the early developmental stages, vegetative stage, stage of flowering and seed formation, and aging stage were 1,17; 1,37; 1,38; and 1 ,19, and (5) the water productivity on plot A was 1,88 kg grain/m3 water, while on the plot B was 2,48 kg grain/m3 water. Key words: water balance, corn, evapotranspiration, percolation, surface runoff.
| Jenis Karya Akhir: | Skripsi |
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| Subyek: | |
| Program Studi: | Fakultas Pertanian dan Pascasarjana > Prodi Teknik Pertanian |
| Pengguna Deposit: | IC-STAR . 2015 |
| Date Deposited: | 07 Sep 2015 04:24 |
| Terakhir diubah: | 21 Oct 2015 08:08 |
| URI: | http://digilib.unila.ac.id/id/eprint/12437 |
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