Penelitian ini bertujuan untuk mengetahui pengaruh jarak tanam dan jumlah benih terhadap pertumbuhan dan hasil tanaman jagung manis (Zea mays saccharata Sturt) Varietas Paragon. Percobaan dilaksanakan di Sukamulya, RT 01 RW 11, Desa Cikoneng, Kecamatan Ciparay, Kabupaten Bandung, Provinsi Jawa Barat. pada bulan Agustus sampai dengan bulan November 2021. Daerah ini terletak pada ketinggian ±700 meter diatas permukaan laut,dengan pH tanah 6,46. Curah hujan rata-rata adalah 2.598,4 mm/tahun ,termasuk curah hujan tipe B2 berdasarkan klasifikasi Oldeman. Penelitian ini menggunakan Rancangan Acak Kelompok pola faktorial dengan tiga ulangan dan terdiri dari dua faktor perlakuan. Faktor pertama adalah jarak tanam (j1 = 75 x 20 cm, j2 = 75 x 40 cm, j3 = 50 x 25 x 100 cm) dan faktor kedua adalah jumlah benih (b1 = 1 benih, b2 = 2 benih, b3 = 3 benih). Hasil penelitian menunjukkan bahwa tidak terjadi interaksi antara jarak tanam dan jumlah benih terhadap pertumbuhan dan hasil tanaman jagung manis (Zea mays sacharata Sturt) varietas paragon. Perlakuan jarak tanam (j1) memberikan pengaruh yang berbeda nyata terhadap tinggi tanaman dan perlakuan jumlah benih (b3) memberikan pengaruh yang berbeda nyata terhadap bobot tanaman per petak. Kata kunci: jagung manis, jarak tanam, jumlah benih,varietas paragon, hasil
Jagung (Zea mays L.) merupakan bahan pangan kedua setelah padi. Permintaan akan kebutuhan jagung semakin bertambah setiap tahunnya, oleh karena itu perlu dilakukan penelitian untuk meningkatkan produktivitas jagung yang optimal. Salah satu upaya untuk meningkatkan yaitu dengan pemberian pupuk. Pemupukan yang dapat dilakukan adalah dengan pemberian urea dengan dosis yang sesuai. Penelitian ini dilaksanakan di Desa Citaman, Kecamatan Nagreg, Kabupaten Bandung. Metode yang digunakan pada penelitian ini adalah metode eksperimental berupa Rancangan Acak Kelompok (RAK) yang terdiri dari 6 perlakuan dan 4 ulangan. Perlakuan dosis Urea adalah 6 taraf, yaitu : A = 0 kg/ha (kontrol), B = 100 kg/ha, C = 200 kg/ha, D = 300 kg/ha, E 400 kg/ha dan F = 500 kg/ha. Pengujian beda dua rata-rata dilakukan dengan Uji Jarak Berganda Duncan pada taraf 5%. Hasil penelitian menunjukkan bahwa pertumbuhan dan hasil tanaman jagung menunjukkan hasil yang berbeda nyata pada dosis urea sebesar 500 kg/ha pada pertumbuhan jagung fase vegetatif dengan parameter tinggi tanaman, jumlah daun, dan fase generatif dengan parameter rata-rata bobot tongkol kelobot per plot, diameter tongkol per tanaman, rata-rata berat kering per tanaman. Pemberian dosis urea 300 kg/ha memberikan pengaruh lebih baik pada luas kanopi. Kata kunci: jagung hibrida, urea, bisi 18, dosis, hasil
The aim of the study was to determine the appropriate age and number of seeds for the transfer process (Tapin) from the nursery to the planting area in order to obtain high growth and yield of black rice.This research was conducted in Lemah Duhur irrigated rice fields, Kiangroke Village, Banjaran District, Bandung Regency, West Java Province.This study used an experimental method with Split Plot Design using 2 factors, namely seed age (U) as the main plot consisting of 4 levels, namely u1 = 10 days after sowing, u2 = 15 days after sowing, u3 = 20 days after sowing scatter and u4 = 25 days after scatter. The number of seeds per planting hole (J) as child plots consisted of 4 levels, namely j1 = 1 seed per planting hole, j2 = 3 seeds per planting hole, j3 = 5 seeds per planting hole and j4 = 7 seeds per planting hole.Parameters observed were: number of tillers per clump, number of panicles per clump, weight of harvested dry unhulled (GKP) per clump, weight of dry harvested unhulled (GKP) per plot, weight of dry milled unhulled (GKG) per plot.The results showed that there was no interaction between the treatment of seed age and the number of seeds operted in the planting hole for all observation parameters. The highest average number of panicles per clump was found in u2j1, the highest average weight of harvested dry grain per clump was found in treatment u4j1, the highest average weight of harvested dry grain (GKP) per plot was found in treatment u4j1, the average the highest average weight of dry milled grain (GKG) per plot was in the u4j1 treatment. Key words : seed age, seed number, black rice, anthocyanin, aleurone
This aims of this research to see the efficacy of several concentrations of pesticides with active ingredients Bacillus thuringinensis and Emamectin Benzoate which can provide the best effect on the control of Spodoptera exigua pest attack on onion plants (Allium fistulosum L.). The experiment was carried out in the Pangalengan District, Bandung Regency. Located at an altitude of 1100 meters above sea level (msl), the texture of the clay is dusty with a pH of 5.44 and a rainfall of 2904.7 mm / year, including type C2 based on Oldeman's 1975 classification. The trial period is from April to July. 2018. The research method used an experimental method with a randomized block design (RBD) consisting of A (Control. 0.00 ml / liter of water or without insecticide), B (Florbac FC 0.25 ml / liter of water for the active ingredient Bacillus thuringiensis), C (Florbac FC 0 , 75 ml / liter of water for the active ingredient Bacillus thuringiensis), D (Florbac FC 1.25 ml / liter of water for the active ingredient Bacillus thuringiensis), E (Prothol 10 EC 0.25 ml / liter of water for the active ingredient Emamectin benzoate), F (Prothol 10 EC 0 , 75ml / liter of water for the active ingredient Emamectin benzoate) and G (Prothol 10 EC 1.25 ml / liter of water for the active ingredient Emamectin benzoate). The results showed that giving a concentration of Prothol 10 EC 1.25 ml / liter of water the active ingredient Emamectin benzoate gave a better effectiveness value in controlling the Spodoptera exigua pest with an effectiveness value of 44.50% and treatment of the concentration of Florbac FC 1.25 ml / liter of water as the active ingredient Bacillus thuringiensis with an effectiveness value of 37.78%.
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