AbstrakPemanfaatan limbah organik dari perkebunan sebagai media tanam pakcoy (Brassica chinensis L.) diharapkan dapat ditingkatkan dengan penggunaan pupuk organik serta pupuk hayati. Penelitian disusun menggunakan Rancangan Acak Kelompok (RAK) pola faktorial. Faktor pertama adalah dosis asam humat meliputi 1, 3, dan 5 g. Faktor kedua adalah dosis Trichoderma sp., meliputi 50, 100, dan 150 mL. Data yang diperoleh kemudian dianalisis ragam pada taraf nyata 5%. apabila terdapat pengaruh nyata, dilanjutkan dengan uji DMRT. Hasil penelitian menunjukkan bahwa aplikasi asam humat dan Trichoderma sp. memiliki pengaruh mandiri dan tidak terdapat interaksi. Dosis asam humat 3 g per tanaman menghasilkan jumlah daun, panjang daun, tinggi tanaman, tinggi tanaman, bobot basah, dan bobot kering tanaman lebih tinggi dibanding dosis 1 dan 5 g. Perlakuan Trichoderma sp. dosis 50 mL per tanaman memiliki pengaruh lebih baik terhadap jumlah daun, panjang daun, tinggi tanaman, dan bobot basah tanaman.Kata Kunci: hortikultura, jamur, morfologi, senyawa organik Abstract The utilization of organic farm estate as pakcoy (Brassica chinensis L.) growing media may improved by using biofertilizer and organic fertilizer. The research used factorial randomized block design. First factor was humic acid dosage, which included 1, 3, and 5 g of humic acid. Second factor was Trichoderma sp. dosage, which included 50, 100, and 150 mL of Trichoderma sp. Data were analyzed using ANOVA at 5% level, then continued by DMRT test. The results showed that the application of humic acid and Trichoderma sp. had single effects and there was no interaction. The dosage of humic acid 3 g per plant had higher number of leaves, leaf length, plant height, wet weight, and dry weight than other dosages. The treatment of Trichoderma sp. at dosage of 50 mL per plant had a better effect on the number of leaves, leaf length, plant height, and plant wet weight.Keywords: fungi, horticulture, morphology, organic compounds
Penelitian ini bertujuan untuk mengetahui respon morfologi dan fisiologi tanaman kelapa sawit TBM 2 terhadap pemberian pupuk organik kotoran sapi dan mengetahui dosis terbaik pupuk organik kotoran sapi untuk pertumbuhan tanaman kelapa sawit TBM 2.Penelitian dilaksanakan diKebun
Senyawa alelokimia yang terdapat pada gulma umumny dimanfaatkan sebagai biopestisida, namun dengan penggunaan dosis dan konsentrasi yang tepat senyawa tersebut dapat juga dimanfaatkan sebagai Pupuk Organik Cair (POC). Potensi tersebut dapat diaplikasikan pada bibit kelapa sawit masa pembibitan awal (pre nursery) karena bibit memerlukan nutrisi yang cukup untuk mendukung pertumbuhan vegetatifnya. Gulma kirinyu merupakan salah satu gulma dominan di perkebunan kelapa sawit dan mengandung senyawa alelokimia yang tinggi. Keberadaan gulma kirinyu yang melimpah akan sangat baik bila dimanfaatkan sebagai pupuk organik cair untuk bibit kelapa sawit.   Tujuan penelitian ini adalah untuk mendapatkan bahan alternatif pupuk organik cair serta pengaruhnya terhadap morfologi dan fisiologi bibit kelapa sawit, serta mengetahui kandungan senyawa alelokimia pada pupuk organik cair kirinyu. Penelitian dilaksanakan di areal percobaan Kecamatan Cibitung, Bekasi, mulai bulan November 2020  sampai Maret 2021. Penelitian ini disusun dalam Rancangan Acak Kelompok Non Faktorial dengan 5 perlakuan yaitu PO (Kontrol, tanpa pemberian POC), P1 (POC 5 ml/bibit), P2 (POC 10 ml/bibit), P3 (POC 15 ml/bibit), dan P4 (POC 20 ml/bibit). Setiap perlakuan diulang sebanyak 3 kali. Data dianalisis menggunakan ANOVA dan apabila berpengaruh nyata pada taraf 5% maka dilanjutkan dengan Uji BNT. Hasil penelitian menunjukkan bahwa POC kirinyu belum dapat dijadikan alternatif bahan pembuatan pupuk organik cair, karena belum menunjukkan pengaruh nyata terhadap semua variabel morfologi dan fisiologi bibit kelapa sawit. Senyawa alelokimia yang terkandung dalam POC dan dosis yang diberikan masih tergolong rendah sehingga belum maksimal mendukung pertumbuhan bibit kelapa sawit. Senyawa alelokimia yang terkandung dalam POC adalah flavonoid 0,144% dan tanin 0,244%.
<em>A planting medium that rich in nutrients is needed for oil palm, especially in the nursery phase. This study aimed to determine the effect of various doses of EM4 and to get the best dose of EM4 on the growth of oil palm seedlings in the pre-nursery. The research method used was a non-factorial completely randomized design with 4 treatments, namely 0 ml EM4 (A1), 4 ml EM4 (A2), 8 ml EM4 (A3), and 12 ml EM4 (A4). Each treatment was repeated 6 times so that there were 24 experimental units. The data obtained were analyzed for variance at the 5% level, if the effect was real, it was followed by the least significant difference (LSD) test. Based on the results of the study, it could be concluded that application of various EM4 doses had a significant effect on plant height (4-12 MST), the number of leaves (4-8 MST), trunk girth (4-12 MST), and shoot wet weight but did not significantly affect the number of leaves (12 MST), the volume of roots, length of roots, root wet weight and shoot dry weight, dry weight root, the best dose was shown at a dose of 12 ml EM4.</em>
<em>Pakcoy is a vegetable commodity that has high economic value. This study aims to determine the effect of humic acid and Trichoderma sp. by utilizing empty fruit bunch (EFB) waste as a growing medium for Pakcoy growth. The research method used was a two-factor randomized block design. The first factor is humic acid (AH) with three levels: AH1 = 1 g, AH2 = 2 g, AH3 = 3 g. The second factor is Trichoderma sp. (T) with three levels; T1 = 50 ml, T2 = 100 ml, T3 = 150 ml. In this study it was concluded, the best treatment was found in the application of humic acid with a dose of 1 g on the parameters of observation of leaf length, leaf width, plant height, wet weight, and plant dry weight. The use of Trichoderma sp. in this study, does not affect all parameters observation. The results of the analysis of the planting medium showed that the pH was slightly acidic conditions 5.67 - 6.33. The organic matter content contained in the growing media ranged from 1.20 to 2.62%, and the total N-total contained in the growing medium ranged from 0.10 to 0.18. In-plant tissue analysis shows that the N-total found in plant tissue ranges from 4.62 - 5.23.</em>
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