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.
The decrease in mushroom productivity due to openings at the top of the baglog needs to be balanced with phosphor to increase the mushroom harvest. The research study the interaction effect of opening position plastic baglogs and concentration of phosphor fertilizers to growth and yield of oyster mushroom. The experiment has been done in Mushrooms House, Faculty of Agriculture, Winaya Mukti University, Sumedang with altitude of 850 m above sea level. It was carried out from September until December 2015. The experimental design used in this experiment was completely randomized design and treatment design was factorial. The treatment consisted of two factors: the opening position of plastic baglogs and fertilizer concentrations of phosphor fertilizer. Opening position of plastic baglogs consists of a 6 levels that b1 = vertically baglog, the top of baglog opened entirely, b2 = vertically baglog, left side baglog opened at areas 3cm x 1cm, b3 = vertically baglog, left and right side baglog opened at areas 3cm x 1cm, b4 = horizontally baglog, left and right side baglog opened entirely, b5 = the left side baglog opened at areas 3cm x 1cm, and b6 = left and right side baglog opened at areas 3cm x 1cm. The concentration of phosphor fertilizer consisted of 3 levels that p0 = 0 g L -1 solution, p1 = 0.25 g L -1 solution, and p2 = 0.50 g L -1 solution. All treatment was replicated 2 times. The results showed that there was interaction between opening position of plastic baglog and a concentration of phosphor fertilizer to height of mushroom fruiting bodies.
Penelitian bertujuan untuk mempelajari dan mengetahui jenis media dan konsentrasi auksin pada pertumbuhan akar. Penelitian dilaksanakan pada bulan Mei 2020 sampai September 2020 di lahan petani Desa Suriamukti Kecamatan Surian Kabupaten Sumedang Provinsi Jawa Barat. Rancangan percobaan yang digunakan adalah rancangan acak kelompok (RAK) pola faktorial yang terdiri dari 2 faktor yaitu jenis media tanam (m) dan Konsentrasi auksin (r). Masing-masing perlakuan terdiri dari 4 taraf, sehingga diperoleh 16 kombinasi perlakuan dan diulang sebanyak 2 kali. Seluruhnya menjadi 32 satuan percobaan. faktor pertama jenis media tanam (m) yang terdiri dari empat taraf : m0 = tanah, m1 = tanah + pupuk kandang domba, m2 = tanah + pasir, m3 = tanah + pupuk kandang domba + pasir. Faktor kedua adalah konsentrasi auksin (r) yang terdiri dari 4 taraf : r0 = 0 mgL-1, r1 = 100 mgL-1, r2 = 200 mgL-1, r3 = 300 mgL-1. Hasil penelitian menunjukkan terjadi interaksi pada parameter jumlah tunas 12 MST. Akan tetapi tidak terjadi interaksi antara jenis media dan konsentrasi auksin pada parameter, panjang tunas, jumlah daun, dan volume akar. Secara efek mandiri media tanah dan pasir memberikan volume akar yang baik dan sama dengan media tanah + pasir + pupuk kandang.
Logam Timbal (Pb) merupakan logam berat yang bersifat toksik terhadap organisme. Aktivitas manusia dalam kegiatan industri yang membuang limbahnya ke perairan yang mengandung Pb juga dapat menjadi sumber pencemaran Timbal. Untuk mengatasi permasalahan ini, beberapa penelitian sudah dilakukan untuk mereduksi Pb agar kadarnya di lingkungan dapat dikendalikan salah satunya dengan teknik fitoremediasi. Teknik ini memanfaatkan tanaman untuk menghilangkan atau menghancurkan kontaminan. Penelitian yang telah dilakukan dengan teknik fitoremediasi adalah menggunakan tanaman akar wangi (Vetiveria zizanioides) sebagai penyerap logam berat timbal. Hasil penelitian menunjukkan bahwa tanaman tersebut mempunyai kemampuan yang baik untuk menyerap logam timbal. Tujuan penelitian ini adalah untuk mengetahui kemapuan tanaman akarwangi yang dalam menyerap dan mengakumulasi Pb dengan penambahan senyawa pengindus amonium sulfat (ZA). Hasil penelitian diharapkan dapat dimanfaatkan sebagai metode alternatif penanganan limbah logam berat timbal tanpa menggunakan reagen kimia, yaitu dengan menggunakan tanaman. Penelitian ini dilaksanakan dengan teknik ex situ yaitu tanah (tailing) yang tercemar dipindahkan ke dalam sebuah tempat (dalam penelitian ini digunakan pot berkapasitas ± 6.000 gram) dan ditanami tanaman akarwangi. Pengukuran kadar Pb dalam media tanam (tailing) dan tanaman akarwangi dilakukan setelah tanaman berusia selama 8 minggu setelah tanam. Hasil penelitian ini menunjukkan bahwa tanaman akarwangi yang berasal dari Cibaliung dapat menyerap logam berat Pb tertinggi yaitu sebesar 8,11 mg.kg-1 pada pemberian pengindus ZA sebanyak 26,73 g per pot. Hal ini menunjukkan bahwa tanaman akarwangi dapat menyerap logam berat Pb dalam tanah dan tanaman tanaman ini dapat digolongkan menjadi tanaman hiperakumulator terhadap logam berat Pb.Tanaman akarwangi yang berasal dari wilayah Cibaliung Banten, dapat menyerap logam berat Pb lebih banyak dibandingkan dengan tanaman akarwangi yang berasal wilayah Tanjungsari kabupaten Sumedang Jawa Barat.
We report the dose of sheep manure and POC concentration Poster which aims to study changes in the dose of sheep manure and Poster POC concentration on growth and yield of peanut (Arachis hypogea L.). This research is compiled in a randomized block design (RAK) factorial design consisting of two factors. The first factor sheep manure dosage form consists of three levels ie d1 (5 t ha-1), d2 (10 ton ha-1) and d3 (15 ton ha). The second factor in the form of the concentration of liquid organic fertilizer Poster consists of three levels ie p1 (1 ml-1), p2 (3 ml l-1) and P3 (5 ml l-1), respectively - each combination treatment was repeated 3 times. Different test average - average use multiplerange test duncant 5% significance level. Award dose sheep manure and POC concentration Poster melihatkan their interaction on plant height 9 MST, pong numberper plant and weight of pods per plant, giving a high dose of manure that requires concentration POC rendah. Secara an Independent Award dose effect of manure 10 ton ha-1 and 15 ton ha-1 showed the best effect on the plant height ages 5 and 7 MST MST, the percentage of pithy pods and number of seeds per plant.
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