This study aimed to (1) PENDAHULUANPisang (Musa paradisiacal Linn) merupakan jenis buah yang umum ditemui di perkotaan sampai ke pelosok desa. Produktivitas pisang yang dikembangkan di masyarakat masih rendah, produktivitas buah pisang di Lampung hanya 10-15 ton.ha -1 sementara potensi produktivitasnya dapat mencapai 35-40 ton.ha -1 . Kendala produksi pisang tersebut disebabkan teknik budidaya yang kurang tepat serta tingginya gangguan hama dan penyakit. Kendala tersebut dapat diatasi dengan penerapan teknologi teknik budidaya, penggunaan varietas unggul dan perbaikan varietas (Mulyani, 2008).
Produktivitas tanaman tomat di Provinsi Lampung terus menurun dalam beberapa tahun terakhir. Pada Tahun 2017 tercatat produktivitas tomat mencapai 13.46 ton/ha, sedangkan pada tahun 2019 hanya mencapai 10.52 ton/ha. Bahkan nilai ini masih jauh lebih rendah dibandingkan dengan rata rata nasional yang mencapai 18.63 ton/ha. Untuk mengatasi hal tersebut peningkatan produktivitas mutlak dibutuhkan, salah satunya adalah dengan penambahan pupuk kandang dan pupuk hayati. Penelitian ini dilaksanakan di Laboratorium Lapang Terpadu, Fakultas Pertanian, Universitas Lampung pada bulan Januari - Mei 2020. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) secara faktorial 4 x 3 dengan tiga ulangan. Faktor pertama adalah pemupukan dengan menggunakan beberapa jenis pupuk kandang (ayam, kambing dan sapi) sebanyak 1/3 bagian media tanam, sedangkan faktor kedua adalah aplikasi pupuk hayati dengan dosis, 0 l/ha, 4 l/ha, dan 8 l/ha. Hasil penelitian menunjukkan bahwa aplikasi pupuk kandang berpengaruh nyata terhadap seluruh variabel pengamatan. Dari ketiga jenis pupuk kandang, pupuk kandang kambing memberikan hasil yang paling baikdibandingkan pupuk kandang lainnya. Aplikasi pupuk hayati dengan dosis 4 l/ha berpengaruh nyata terhadap variabel jumlah cabang primer dan jumlah bunga tanaman tomat dan merupakan perlakuan terbaik untuk pupuk hayati. Tidak terjadi interaksi antara perlakuan pupuk kandang dan pupuk hayati.
Lettuce (Lactuca sativa L.) is a vegetable plant which consumption in fresh form. Color, texture, and aroma lettuce can beautify also be an ornamental dish of food. Request lettuce until now has not met its full potential, it is because there are obstacles in cultivation that influence the quality and production results. One technique that can be used in the cultivation of lettuce ie hydroponic. The purpose of this study was to: (1) To know the effect of Catalyst Plant on growth and yield of plants in hydroponic lettuce, (2) To know the effect of the concentration of nitrogen on the growth and yield of plants in hydroponic lettuce, (3) To determine the concentration of nitrogen in response to the liquid fertilizer Catalyst Plant. This study uses a randomized group design perfect (RKTS) arranged factorial (5x2) with three replications. The first factor is the nitrogen concentration of 200 ppm, 225 ppm, 250 ppm, 275 ppm, 300 ppm supplied from planting as much as 3 times a day. The second factor is the provision of liquid fertilizer Catalyst Plant (P1) and without giving liquid fertilizer (P0) with a concentration of 2 g / L of water. Interval application of liquid fertilizer once a week until harvest time. Data were analyzed by analysis of variance to investigate the influence of the treatment applied. If there are significant between the treatment continued with the separation of the middle value of Orthogonal polynomial at 5%. Of the two factors obtained 10 combined treatment with 3 replications and obtained 30 experimental units. Each experimental unit planted two plants, so that the overall use of 60 trial plants Catalyst Plant liquid fertilizer application resulted in better plant growth compared without giving liquid fertilizer. Increased nitrogen concentration of 25 ppm, the concentration of 250-300 ppm improve the growth of plant height of 0.02 cm, 0.01 cm long roots, and plant fresh weight of 0.03 grams (11:12%). There are a response to the nitrogen concentration of liquid fertilizer Catalyst Plant .
Lettuce (Lactuca sativa L.) is a vegetable plant which consumption in fresh form. Color, texture, and aroma lettuce can beautify also be an ornamental dish of food. Request lettuce until now has not met its full potential, it is because there are obstacles in cultivation that influence the quality and production results. One technique that can be used in the cultivation of lettuce ie hydroponic. The purpose of this study was to: (1) To know the effect of Catalyst Plant on growth and yield of plants in hydroponic lettuce, (2) To know the effect of the concentration of nitrogen on the growth and yield of plants in hydroponic lettuce, (3) To determine the concentration of nitrogen in response to the liquid fertilizer Catalyst Plant. This study uses a randomized group design perfect (RKTS) arranged factorial (5x2) with three replications. The first factor is the nitrogen concentration of 200 ppm, 225 ppm, 250 ppm, 275 ppm, 300 ppm supplied from planting as much as 3 times a day. The second factor is the provision of liquid fertilizer Catalyst Plant (P1) and without giving liquid fertilizer (P0) with a concentration of 2 g / L of water. Interval application of liquid fertilizer once a week until harvest time. Data were analyzed by analysis of variance to investigate the influence of the treatment applied. If there are significant between the treatment continued with the separation of the middle value of Orthogonal polynomial at 5%. Of the two factors obtained 10 combined treatment with 3 replications and obtained 30 experimental units. Each experimental unit planted two plants, so that the overall use of 60 trial plants Catalyst Plant liquid fertilizer application resulted in better plant growth compared without giving liquid fertilizer. Increased nitrogen concentration of 25 ppm, the concentration of 250-300 ppm improve the growth of plant height of 0.02 cm, 0.01 cm long roots, and plant fresh weight of 0.03 grams (11:12%). There are a response to the nitrogen concentration of liquid fertilizer Catalyst Plant . Keywords: Grand Rapid lettuce, hydroponics, Catalyst Plant, the concentration of nitrogen
Salah satu komoditas pangan strategis di Indonesia dan komoditas terpenting setelah padi dan jagung adalah kedelai. Kebutuhan terhadap kedelai semakin meningkat dari tahun ketahun tetapi produksi kedelai semakin menurun, sehingga dibutuhkan penambahan pupuk untuk mencukupi kebutuhan nutrisi tanaman. Penelitian bertujuan untuk mengetahui pengaruh dosis pupuk majemuk NPK dan pupuk pelengkap Plant Catalyst terhadap pertumbuhan dan produksi kedelai. Penelitian dilaksanakan di Desa Suka Banjar, Kecamatan Gedong tataan, Kabupaten Pesawaran, Provinsi Lampung pada Februari sampai April 2016. Penelitian ini menggunakan rancangan faktorial (5 x 2) dalam Rancangan Acak Kelompok (RAK) dengan 3 ulangan. Faktor pertama adalah dosis pupuk majemuk NPK (M), yang terdiri atas lima taraf yaitu (m 0 )= 0 kg/ha, (m 1 )= 100 kg/ha, (m 2 )= 200 kg/ ha, (m 3 )= 300 kg/ha (m 4 )= 400 kg/ha. Faktor kedua adalah pupuk pelengkap Plant Catalyst (P) terdiri atas dua taraf yaitu tanpa Plant Catalyst (p 0 ) dan dengan Plant Catalyst dengan konsentrasi 1,5 g/1 liter air (p 1 ). Data diuji dengan analisis ragam dan nilai tengah antarperlakuan menggunakan polinomial ortogonal pada taraf á 1% dan 5%. Dosis optimum pupuk majemuk NPK pada variabel bobot biji kering per petak (g) yaitu pada tanpa aplikasi pupuk Plant Catalyst sebesar 307,58 kg/ha menghasilkan bobot biji kering per petak sebesar 1.673,65 g dan dosis terbaik pupuk majemuk NPK dengan aplikasi pupuk Plant Catalyst sebesar 341,75 kg/ha yang menghasilkan bobot biji kering per petak sebesar 1.897,76 g. Aplikasi pupuk pelengkap Plant Catalyst lebih baik dibandingkan tanpa pupuk pelengkap Plant Catalyst, hal itu ditunjukkan pada seluruh variabel pengamatan. Pada variabel pertumbuhan tidak terdapat pengaruh interaksi antara dosis pupuk majemuk NPK dan pupuk pelengkap Plant Catalyst, sedangkan pada variabel hasil terdapat pengaruh inetraksi antara dosis pupuk majemuk NPK dan pupuk pelengkap Plant Catalyst.
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