The soil fertility and nutrient availability are limiting factors for growth and plant development. Fermented compost and nitrogen (N)-fertilizer are useful as sources of nutrients to support the growth of plant and microorganisms in soils. The combination of biological fertilizer and chemical fertilizer can support the concept of sustainable and integrated agriculture and minimize the adverse effects of chemical fertilizers. The research was conducted to get the recommended dose of fermented compost and N-fertilizer to increase the plant height and productivity of purple eggplant. The experiment was arranged as factorialized randomized block design and consisted of two factors and two replications, namely fermented compost dose (0, 5, 10, and 15 t ha−1) and N-fertilizer dose (0, 75, 150, and 225 kg ha−1). The observed responses were increase in plant height and productivity of purple eggplant. Compared to the control, the application of 15 t ha−1 fermented compost and 225 kg ha−1 N-fertilizer increased the plant height by 40.76% at 30 days after planting and 57.59% at 37 days after planting and increased the purple eggplant yield by 43.15%. BC ratio of the fermented compost (15 t ha−1) is 1.16 and BC ratio of the N-fertilizer (225 kg ha−1) is 1.09. Recommended dose to increase the plant height and productivity of purple eggplant in vertisol is 15 t ha−1 of fermented compost and 225 kg ha−1 of N-fertilizer.
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.
Since variations in chrysanthemums are still limited, Indonesia still imports. An effort to expand the variation can be done through polyploidy techniques using colchicine. Pasopati varieties of the chrysanthemum were propagated in vitro and treated with colchicine and planted in different media compositions to observe performance and obtain superior genotype. Experiment with a factorial pattern that consist of two factors: the composition of the planting medium ( m1 = top soil, m2 = cocopeat, m3 = husk charcoal, m4 = top soil + cocopeat m5 = top soil + husk charcoal, m6 = cocopeat + chaff charcoal) and polyploidy chrysanthemum genotypes (g1 = KAR0, g2 = KAR1, g3 = KAR2, g4 = KAR3, and g5 = KAR4) with two replications was designed. The results showed there were variations in plant height, stem diameter, number of nodes, number of floret, and stalk length on polyploidy Chrysanthemum genotypes due to different planting media. The m4 = top soil + cocopeat can increase plant height, stem diameter, number of nodes, stalk length and number of floret KAR4 genotype.
Percobaan ini bertujuan untuk mengetahui pengaruh perbedaan varietas dan lokasi penanaman terhadap pertumbuhan dan produksi tembakau unggul lokal bandung serta untuk mengetahui varietas mana yang memberikan hasil terbaik. Percobaan dilakukan di kebun petani di Desa Cikawao Kecamatan Pacet dan Desa Mandalasari Kecamatan Cikancung Kabupaten Bandung Jawa Barat, pada bulan Mei sampai dengan Agustus 2019. Rancangan percobaan menggunakan Rancangan Acak Kelompok RAK) pola Faktorial yang terdiri atas dua faktor dan masing-masing diulang sebanyak lima kali. Faktor pertama adalah varietas yang terdiri dari empat varietas yaitu v1, (Teril), v2 (Desep), v3 (Nani Hejo) dan v4 (Himar). Faktor kedua adalah Lokasi yang terdiri dari dua lokasi yaitu l1 (Cikawao) dan l2 (Mandalasari). Percobaan menghasilkan bahwa jenis varietas tembakau dan lokasi penanaman menunjukan interaksi antara keduanya, dan menunjukan perbedaan yang nyata terhadap umur berbunga, umur panen, tinggi tanaman, lebar daun, panjang daun, jumlah daun, bobot basah daun dan berat kering daun krosok.
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