Jagung (Zea Mays L.) Merupakan Salah Satu Tanaman Pangan Utama Setelah Padi Di Indonesia. Semakin Tinggi Konsumsi Jagung Saat Ini, Maka Perlu Upaya Peningkatan Produksi Salah Satunya Dengan Cara Menggunakan Benih Dengan Mutu Yang Baik. Benih Bermutu Baik Umumnya Berkaitan Erat Dengan Viabilitas Dan Vigor Benih (Lesilolo Et Al. 2013). Meskipun Telah Teruji Mutunya, Benih Dapat Mengalami Penurunan Mutu Selama Masa Penyimpanan.
Penelitian Ini Bertujuan Untuk Mengetahui Pengaruh Pemberian Bahan Coating Ekstrak N. Mirabilis Terhadap Benih Jagung Selama Penyimpanan, Mengetahui Konsentrasi Yang Terbaik Terhadap Viabilitas Dan Vigor Serta Pertumbuhan Benih Jagung. Penelitian Dilaksanakan Pada Bulan November 2018 Sampai Dengan Januari 2019, Berlokasi Di Laboratorium Perlindungan Tanaman Dan Screen House Fakultas Pertanian, Universitas Borneo Tarakan. Penelitian Ini Menggunakan Rancangan Acak Kelompok (RAK) Satu Faktor Dengan 4 Ulangan Dan 11 Perlakuan Yaitu : P01 = Akuades; P02 = CMC 0,20; P03 = Dithane 2 G/L; P1 = Ekstrak Daun 1 G/L + Cmc 0,20 G/Ml; P2 = Ekstrak Daun 0,20 G/L + Cmc 2 G/Ml; P3 = Ekstrak Daun 4 G/L + Cmc 0,20 G/Ml; P4 = Ekstrak Daun 8 G/L + Cmc 0,20 G/Ml; P5 = Ekstrak Kantung 1 G/L + Cmc 0,20 G/Ml; P6 = Ekstrak Kantung 2 G/L + Cmc 0,20 G/Ml; P7 = Ekstrak Kantung 4 G/L + Cmc 0,20 G/Ml; P8 = Ekstrak Kantung 8 G/L + Cmc 0,20 G/Ml.
Hasil Penelitian Menunjukkan Perlakuan P5 (Ekstrak Kantung N. Mirabilis 1 G/L + Cmc 0,20 G/Ml) Memberikan Pengaruh Yang Nyata Pada Parameter Pertumbuhan Dengan Tinggi Tanaman 35,16 Cm Dan Panjang Akar Terpanjang 21,93 Cm. Sementara Untuk Parameter Berat Basah Tanaman, Perlakuan P5 Juga Menunjukkan Nilai Tertinggi Tetapi Tidak Berpengaruh Nyata Yaitu Sebesar 35,81 G. Sementara Perlakuan P6 (Ekstrak Kantung N. Mirabilis 2 G/L + Cmc 0,20 G/Ml), Memberikan Kecenderungan Tertinggi Pada Parameter Viabilitas Dan Vigor Benih Tanaman Jagung Dengan Pencapaian Potensi Daya Kecambah (PTM) 81%, Daya Berkecambah 79%, Kecepatan Tumbuh (KCT) 26,83 %/Hari, Indeks Vigor (InV) 68%, Dan Berat Kering Kecambah Normal (BKKN) 7,81 G.

Corn (Zea Mays L.) Is One Of The Staple Food After Rice In Indonesia. The Consumption Of Corn In Indonesia Has Been Increasing. Therefore, Using High Quality Seeds Is Necessary In Order To Increase The Production Of Corn. High Quality Seeds Are Generally Related To Seed Viability And Vigor (Lesilolo Et Al. 2013). Although The Quality Has Been Tested, Seeds Are Able To Decrease The Quality During The Storage Period. This Research Aims To Investigate The Influence Of N. Mirabilis Coating Exract On Corn Seeds During The Storage, And To Determine The Best Concentration To Viability And Vigor Seeds, Also The Growth Of Corn Seeds. The Research Was Conducted In Laboratory Of Plant Protection And Screen House, Faculty Of Agriculture, Borneo Tarakan University From November 2018 To January 2019. This Research Was Arranged In A Randomized Block Design (RBD) With 4 Replications And 11 Treatments, There Are P01 = Aquades; P02 = CMC 0,20; P03 = Dithane 2 G/L; P1 = Leaf Extract 1 G/L + Cmc 0,20 G/Ml; P2 = Leaf Extract 2 G/L + Cmc 0,20 G/Ml; P3 = Leaf Extract 4 G/L + Cmc 0,20 G/Ml; P4 = Leaf Extract 8 G/L + Cmc 0,20 G/Ml; P5 = Pitcher Extract 1 G/L + Cmc 0,20 G/Ml; P6 = Pitcher Extract 2 G/L + Cmc 0,20 G/Ml; P7 = Pitcher Extract 4 G/L + Cmc 0,20 G/Ml; P8 = Pitcher Extract 8 G/L + Cmc 0,20 G/Ml. The Result Shows That P5 (N. Mirabilis Pitcher Extract 1 G/L + Cmc 0,20 G/Ml) Had A Significant Effect On Growth Parameters With Plant Height Are 35,16 Cm And Loongest Root Length Are 21,93 Cm. Meanwhile, On The Wet Weight Parameters P5 Show The Same Highest Value But Didn’t Give Any Significant Affect Are 35,81 G. P6 Treatment (N. Mirabilis Pitcher Extract 2 G/L + Cmc 0,20 G/Ml), Gave Effect The Highest Tendency In Viability And Vigor Parameters Of Corn Seed With The Value Of Maximum Growth Potential (MGP) 81%, Germination Percentage (GP) 79%, Growth Rate (KCT) 26,83 %/Day, Vigor Index (VI) 68%, And Normal Seedling Dry Weight (NSDW) 7,81 G.