BONA DAPOT KURNIAWAN RITONGA, NPM 2103100111 (2025) PENGARUH PEMBERIAN PUPUK ORGANIK CAIR DARI AIR CUCIAN BERAS TERHADAP PERTUMBUHAN TANAMAN JAGUNG (ZEA MAYS L.) VARIETAS LOKAL SUMATERA UTARA YANG TELAH DI IRADIASI SINAR GAMMA. Skripsi thesis, Universitas Labuhanbatu.
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Abstract
Penelitian ini bertujuan untuk mengetahui pengaruh pemberian pupuk organik cair (POC) dari air cucian beras terhadap pertumbuhan tanaman jagung (Zea mays L.) varietas lokal Sumatera Utara yang telah diiradiasi sinar gamma. Penelitian dilaksanakan di Desa Perbaungan, Kecamatan Bilah Hulu, Kabupaten Labuhanbatu pada bulan Desember hingga Februari dengan menggunakan Rancangan Acak Lengkap (RAL) satu faktor, yaitu konsentrasi POC: P0 (0 ml), P1 (250 ml), P2 (500 ml), P3 (750 ml), dan P4 (1000 ml). Setiap perlakuan diulang empat kali dengan parameter pengamatan meliputi tinggi tanaman, jumlah daun, diameter batang, dan bobot kering akar. Data di analisis menggunakan ANOVA dan dilanjutkan dengan uji Beda Nyata Jujur (BNJ) pada taraf 5%. Hasil penelitian menunjukkan bahwa pemberian POC berpengaruh nyata terhadap semua parameter pertumbuhan. Perlakuan terbaik diperoleh pada P3 (750 ml/tanaman) dengan rata-rata tinggi tanaman 108,18 cm, jumlah daun 10,25 helai, diameter batang 1,67 cm, dan bobot kering akar 25,1 g. Sementara itu, dosis yang terlalu tinggi (P4) justru menurunkan efektivitas pertumbuhan. Dengan demikian, dosis 750 ml POC per tanaman direkomendasikan sebagai perlakuan paling optimal untuk meningkatkan pertumbuhan jagung varietas lokal Sumatera Utara hasil iradiasi sinar gamma. Kata Kunci: Jagung Lokal, Pupuk Organik Cair, Air Cucian Beras, Iradiasi Gamma, Pertumbuhan ================================================================================================= This study aimed to determine the effect of liquid organic fertilizer (LOF) from rice-washing water on the growth of local corn (Zea mays L.) varieties from North Sumatra that had been irradiated with gamma rays. The research was conducted in Perbaungan Village, Bilah Hulu District, Labuhanbatu Regency from December to February using a Completely Randomized Design (CRD) with one factor, namely LOF concentration: P0 (0 ml), P1 (250 ml), P2 (500 ml), P3 (750 ml), and P4 (1000 ml). Each treatment was repeated four times with observed parameters including plant height, number of leaves, stem diameter, and root dry weight. Data were analyzed using ANOVA followed by the Honest Significant Difference (HSD) test at the 5% level. The results showed that LOF application significantly affected all growth parameters. The best treatment was P3 (750 ml/plant) with an average plant height of 108.18 cm, 10.25 leaves, stem diameter of 1.67 cm, and root dry weight of 25.1 g. Meanwhile, excessive dosage (P4) tended to reduce growth effectiveness. Thus, 750 ml of LOF per plant is recommended as the most optimal dosage to enhance the growth of local North Sumatran corn irradiated with gamma rays. Keywords: Local Corn, Liquid Organic Fertilizer, Rice-Washing Water, Gamma Irradiation, Growth
| Item Type: | Thesis (Skripsi) |
|---|---|
| Uncontrolled Keywords: | Jagung Lokal, Pupuk Organik Cair, Air Cucian Beras, Iradiasi Gamma, Pertumbuhan===================Local Corn, Liquid Organic Fertilizer, Rice-Washing Water, Gamma Irradiation, Growth |
| Subjects: | Q Science > Q Science (General) Q Science > QK Botany S Agriculture > S Agriculture (General) |
| Divisions: | Fakultas Sains Dan Teknologi > Agroteknologi |
| Depositing User: | Unnamed user with email repository@ulb.ac.id |
| Date Deposited: | 25 Aug 2025 03:31 |
| Last Modified: | 25 Aug 2025 03:35 |
| URI: | http://repository.ulb.ac.id/id/eprint/1654 |
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