PRODUKSI BAHAN KERING JERAMI JAGUNG SEMI DENGAN PUPUK N YANG DILAPISI MINYAK

BUDIYANTO, AGUNG , Dr. Ir. Djoko Sutrisno, M.sc

1995 | Skripsi | S1 ILMU DAN INDUSTRI PETERNAKAN

Penelitian yang dilaksanakan selama tujuh bulan di Kebun Pendidikan, Penelitian dan Pengembangan Pertanian ( KP4) Universitas Gadjah Mada, Kalitirto , Yogyakarta bertujuan untuk membandingkan produksi bahan kering jerami jagung semi/ha yang ditanam dengan berbagai perlakuan pupuk N. Tanah sebanyak 12 plot dengan ukuran 6 x 6 m^ per plot dan jarak tiap plot 0, 5 m, ditanami jagung dengan jarak 0,6 x 0, 15 m dibagi secara acak menjadi 4 blok dengan 3 perlakuan pemupukan N. Perlakuan pertama (PI ) diberikan secara konvensional ( tanpa dilapisi minyak) dengan dosis standard 400 kg urea/ha, perlakuan kedua ( P 2 ) diberikan dengan dosis N-equal 60 % PI dan perlakuan ketiga ( P3 ) dosis N-equal 40 % PI tetapi urea untuk P2 dan P3 dilapisi minyak kelapa sawit. Masingmasing perlakuan diulangi empat kali. Uji statistik terhadap PI, P2 dan P3 dengan RCBD ( Randomized Complete Block Design ). Tinggi tanaman jagung semi '( 104, 83; 97,60 dan 84,95 cm ), produksi hijauan segar ( 19,81; 19,22 dan 11,55 ton/ha) dan produksi bahan kering ( 5,57; 5,15 dan 3, 29 ton/ha ) saling berbeda nyata ( P <0,05 ) berturut turut untuk PI, P2 dan P3. Berturut - turut hasil bahan kering setiap kali panen dapat untuk menampung ternak sebanyak 1,96; 1,81 dan 1, 15 unit ternak/ha/tahun. Dari hasil penelitian ini dapat disimpulkan bahwa pelapisan pupuk urea dengan minyak kelapa sawit yang diberikan pada tanaman jagung semi dengan dosis 40 dan 60% lebih rendah hasil jeraminya dari pada jagung semi yang dipupuk secara konvensional dengan dosis 400 kg urea/ha/tanam. Kata kunci : baby corn, pelapisan pupuk urea, produksi bahan kering.

The research was done as long as seven month at Agricultural Training, Research and Development Gadjah Mada University, Kalitirto, Yogyakarta had a purpose to compare the production of dry matter of baby corn's straw/ha planted with different N fertilizer treatment. The land was divided into twelve plots of 6 m x 6 m area was each plot and corn were planted at 60 cm x 15 cm. The plots were randomly allocated into four blocks with three urea fertilizer treatments. First treatment ( PI) was fertilized conventionally ( given urea without palm oli coating) with standard dose of 400 kg urea/ha, second treatment (P2 ) urea was given palm oil coating urea with dose of 60% of PI and the third treatment ( P3) was given palm oil coating urea with dose of 40% of PI. Each treatment was done in four replications. The results of this research were subjected to statistical analysis using Randomised Complete Block Design ( RCBD). Baby corn height ( 104.83 ; 97.60 and 84.95 cm ), fresh stover production ( 19.81; 19.22 and 11.55 ton/ha ) and dry matter production ( 5.57; 5.15 and 3.29 ton/ha ) generally decreased and among the treatments showed significantly different ( P <0.05 ) for PI, P2 and P3, respectively. The dry stover yielded from each harvest can be used to carry animal as much as 1,96; 1,81 and 1 ,15 animal unit/ha/year , respectively. It can be concluded that palm oil of urea applied at the rate of 40 and 60% yielded lower dry matter production of baby corn straw than that fertilised conventionally at the rate of 400 kg urea/ha/planting. Key words : Baby corn, palm oil coating urea-fertilizer, dry matter production.

Kata Kunci : baby corn, pelapisan pupuk urea, produksi bahan kering