This study was aimed at assessing the effects of shade on the growth, productivity of indigenous vegetables pohpohan and reundeu. A split-plot design was used. The main plot was shade treatments consisting of four levels, namely 0% (no shade), 25%, 50%, and 75%. The subordinate plot was the seed origins, namely Sukabumi, Cianjur, and Bogor. The arrangement of the main and sub plots was done based on a completely randomized design. Results showed that in pohpohan increased plant height was found in 50% shade treatment, while leaf length and width was found to be increased in shade treatment up to 75%. Leaf length and width of pohpohan plants of Bogor origin were higher than those of pohpohan plants of Cianjur and Sukabumi origins. In reundeu plants, no effects of shade treatments were found in all variables measured. Reundeu plants of Bogor and Cianjur origin were found to be superior in plant height, leaves number, length, and width, and fresh and dry weight. Pohpohan plants were potential to be grown under shades. Key words: seed origin, plant height, pohpohan, reundeu, Bogor
The study was aimed at assessing the response of soybean plant (Glycine max L.) to inoculation of arbuscular mycorrhizae and application of phosphorus fertilizer on acidic soil. The study was conducted from February to June 2013. A factorial completely randomized design was used. The first factor was inoculation of mycorrizhae consisting of two levels, namely no inoculation and mycorrizhae inoculation of 10 g/plant. The second factor was the application of phosphorus fertilizer in four levels, namely 0 kg SP-36/ha, 100 kg SP-36/ha, 200 kg SP-36/ha, and 300 kg SP-36/ha. Results showed that soybean plant given no mycorrhizae of 10 g/plant had higher plant height at 3 weeks after planting (WAP) than those given no mycorrhizae. The application of phosphorus fertilizer was found to give significant effects on plant height at 4-7 WAP, number of leaves at 6 WAP, trunk diameter, root length, number of productive branches, fresh and dry weight of roots, fresh and dry weight of root nodes, age at first flowering, number of root nodes, leaf width, pod dry weight, number of one seeded pods and three seeded pods. It was also found that the interaction between inoculation of arbuscular mycorrhizae and application of phosphorus fertilizer gave significant effects on number of leaves at 7 WAP, canopy dry and fresh weight, pod fresh weight, number of two seeded pods, total plant fresh and dry weight, total dry seed weight, number of total pods, and number of seeded pods.Key words: Glycine max L., root nodes, pod dry weight, seeded pods
Penelitian ini bertujuan untuk mempelajari pengaruh jenis pupuk organik sumber N terhadap pertumbuhan dan produksi tanaman buncis tegak. Penelitian dilaksanakan di Kebun Percobaan Universitas Djuanda, Ciawi, Bogor, Jawa Barat pada bulan Februari-Mei 2019. Penelitian disusun menggunakan Rancangan Acak Lengkap yang terdiri atas 11 taraf yaitu tanpa pupuk, kipahit 100% R, kirinyuh 100% R, urine sapi 100% R, urea 100% R, kipahit 75% + urea 25% R, kirinyuh 75% + urea 25% R, urine sapi 75% + urea 25% R, kipahit 50% + urea 50% R, kirinyuh 50% + urea 50% R, urine sapi 50% + urea 50% R. Hasil penelitian membuktikan bahwa aplikasi POC sumber nitrogen memiliki hasil yang yang tidak berbeda nyata dengan aplikasi urea 100% R, sehingga dapat digunakan sebagai alternatif pengganti urea untuk menerapkan sistem nature farming.
Basil is not only useful as a vegetable, but also has many medicinal properties. This encourages thedevelopment of environmentally friendly basil cultivation, through the use of natural fertilizers.This study aims to determine the response of various basil accessions to the composition of sourceN fertilizer derived from cow urine, kipahit (Tithonia) compost and Urea. The study was conductedwith a factorial completely randomized design. The first factor is the accession of basil, namelyKemang, Ciaruten, Cijujug and Gasol. The second factor is the combination of N fertilizer (10levels), namely 100% N-Urea, 100% N- cow urine, 100% N-kipahit, 75% N-Urea + 25% N- cowurine, 75% N-Urea + 25 % N-kipahit, 50% N-Urea + 50% N-urine cow, 50% N-Urea + 50%kipahit, 25% N-Urea + 75% N-cow urine, 25% N-Urea + 75% N - kipahit, 0% N-Urea + 0% Ncow urine + 0% N-kipahit. The dosage of N fertilizer used is 150 kg N ha-1. The results showedthat the accession of basil which showed good growth and production was 'Ciaruten' and 'Gasol'.The application of Urea fertilizer composition with kipahit compost and Urea with cow urineproduces better growth and production compared to the use of Urea fertilizer or organic fertilizerseparately.Keywords: basil, cow urine, kipahit compost
The environmentally friendly fertilizer is necessary for vegetable production that are safe for consumption and maintain soil fertility. This study aims to determine the effect of the composition of urea fertilizer and Mexican sunflower compost (MSC) on the production and quality of various basil accessions (Ocimum basilicum L.). This study uses a factorial completely randomized design, namely basil accession (Gegerbitung, Kadudampit 1, Kadudampit 2, Kemang, Ciaruteun, Cijujug, and Gasol) and the composition of N fertilizer (100% N-urea, 100% N-MSC, 75% N-urea + 25% N-MSC, 50% N-urea + 50% N-MSC, 25% N-urea + 75% N-MSC, and 0% N-urea + 0% N-MSC). The results showed that plants Kadudampit 2 and Gasol have growth and production better than other accessions. Plants treated with 100% N-MSC produced growth and harvest wet and dry weight not significantly different from 100% N-urea. Nitrate and vitamin C content were not significantly different between accessions. The use of 100% MSC significantly reduces leaf nitrate content. The vitamin C content was not significantly different between plants that were fertilized with various compositions of N. The content of chlorophyll a, chlorophyll b, and carotenoids of Gasol and Ciaruteun accessions were the lowest compared to the other five accessions. The highest chlorophyll a, chlorophyll b content are found in plants with Urea, followed by those given a combination of Urea + MSC. The carotenoid content of plant treated with 100% Urea was not significantly different from those fertilized with 75% Urea + 25% MSC and 25% Urea + 75% MSC.
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