Purpose : Black soybean is a legume plant that has economic value on effective seeds and nodules, but out of the number of varieties that have been released until 2013 only 11 varieties are with agronomic height input innovation. The research objective is to obtain superior local genotype, as a source of new black soybean varieties, accompanied by compost and biochar-based agronomy practical innovations for sustainable agriculture. Research Method : The first treatment was compost-based agronomy innovation with biochar (B): b 1 (1 t ha-1 +1 t ha-1) and b 2 :(1.5 t ha-1 + 0.5 t ha-1). The second treatment was 4 genotypes of local black soybean (G): KB1, KA3, CK5, KH4, and as a comparison was a Cikuray variety with each treatment repeated three times. Anova test results of factorial patterns and DRMT Duncan's test at the 5% level. Findings : Anova test results of factorial patterns and DRMT Duncan's test at the 5% level indicate that practical innovations based on compost and biochar agronomy accompanied by genotype have no effect. Both agronomy innovations b 1 and b 2 have the same effect on agronomic characters. Expected Genotypes that were superior to their agronomic character were shown by KH4 and KA3 genotypes with potential productivity of 3.28 t ha-1 and 3.19 t ha-1 , and increased by 21% and 17.71%, respectively. The genotypes of KB1, KA3 and KH4 produced the same number of nodules compared to Cikuray varieties. Limitations : This research doesn't study about soil condition after the experiment. Value : The novelty in this study is the use of low doses and directly applied to planting holes, obtained local genotypes superior agronomic characters for sources of new varieties, and obtained practical innovations based on compos and biochar agronomy for guidance for farmers who later selected regions as centers for varieties new black soybeans.
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
The Experiment was aimed to assess influence of concentration and application of biological agent Paenibacillus polymixa to bacterial leaf blight disease and black rice yields (Oryza sativa L.) local varieties The research was conducted in P4S Al Mukhlis Kiangroke Village, Bandung District, West Java. In December 2016 until April 2017. The experiment used a split-plot design with two factor : 3 application period (W) as the main plot and 4 concentration level (K) as the subplot, thus obtained 12 treatment combinations and each combination was repeated 3 times. Then obtained 36 plot of experiment. Factor I main plot (W) : W1 = morning application (10, 20, 30, 40, 50, 60, 70 days after planting), W2 = daytime (10, 20, 30, 40, 50, 60, 70 days after planting), W3 = afternoon application (10, 20, 30, 40, 50, 60, 70 days after planting) and factor II (K) : K1 = Control, K2 = 5 ml L-1, K3 = 10 ml L-1, K4 = 15 ml L-1. The result showed that the effect of concentration and time of application of biological agent of Paenibacillus polymixa gave no significant effect on plant height, disease intensity, number of productive tillers, number of the dry grain harvest, number of unhulled grain per panicle, and weight of 1000 filled grains. There was an interaction between concentration and time of application of biological agent of Paenibacillus polymixa to bacterial leaf blight disease intensity at age of 95 DAP, treatment of K3 (10ml L-1) with W1 (morning application) gave more resistance effect to bacterial leaf blight intensity.
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
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