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All Journal AGROEKOTEKNOLOGI
Asmarlaili S. Hanafiah
Universitas Sumatera Utara

Published : 2 Documents
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Pengaruh Berbagai Kadar Air Tanah Pada Efektifitas Mikoriza Arbuskular Terhadap Pertumbuhan dan Serapan Hara Bibit Karet (Hevea brassiliensis Muell. Arg.) di Rumah Kasa Manurung, Yossi C; Hanafiah, Asmarlaili S.; Marbun, Posma
AGROEKOTEKNOLOGI Vol 3, No 2 (2015)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

Tujuan penelitian adalah untuk mempelajari pengaruh pemberian MVA (mikoriza vesiculararbuskular) terhadap pertumbuhan dan serapan hara bibit karet (Hevea brasiliensis Muell. Arg.) padakondisi berbagai kadar air tanah terhadap serapan hara dan pertumbuhan stump karet di rumah kasa.Penelitian ini dilaksanakan di Rumah Kasa Fakultas Pertanian Universitas Sumatera Utara, Medanyang berada pada ketinggian ± 25 dpl dari bulan Maret sampai Agustus 2014, menggunakan rancanganpetak terpisah dengan 4 ulangan, dua faktor yaitu kadar air tanah sebagai petak utama dengan 3 taraf(K1, K2, K3) dan Mikoriza arbuskular sebagai anak petak dengan 4 taraf (M0, M1, M2, M3). Parameteryang diamati adalah tinggi tanaman, bobot kering tajuk, derajat infeksi akar, kadar hara N dan Ptanaman, serapan hara N dan P tanaman. Hasil penelitian menunjukkan bahwa penurunan kadar airtanah menghambat pertumbuhan tinggi tanaman secara nyata, menurunkan bobot kering tajuk sertaserapan N dan P tanaman. Inokulasi mikoriza Acaulospora sp. 1 pada kadar air tanah 80 % kapasitaslapang dan mikoriza Glomus sp. pada kadar air tanah 60 % kapasitas lapang meningkatkan bobotkering tanaman serta serapan N dan P tanaman.Kata kunci : tanaman karet, kadar air, mikoriza arbuskular.
Pengaruh pH Terhadap Pembentukan Bintil Akar , Serapan Hara N, Pdan Produksi Tanaman pada Beberapa Varietas Kedelai pada Tanah Inseptisol Di Rumah Kasa Lubis, Danu Syahputra; Hanafiah, Asmarlaili S.; Sembiring, Mariani
AGROEKOTEKNOLOGI Vol 3, No 3 (2015)
Publisher : Program studi Agroekoteknologi, Fakultas Pertanian, Universitas Sumatera Utara-Medan

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Abstract

Indonesia is an agrarian country which focuses on agriculture sector, but has a lot of acid reaction soil. Among all plant species for cultivation activity, soybean is one of the most often plant which use for cultivation activity in Indonesia. The Purpose of this research is finding the effect of pH on root nodule formation, nitrogen and phosphorusuptake and crop production on some varieties of soybean in Inceptisol at screen house. This research use randomized block design factorial method, with 2 factor, first was pH, second was soybean varieties which quantity and weight of root nodule, plant’s nitrogen and phosphorus content, plant’s nitrogen and phosphorus uptake, soil pH, dry plant weight, and also quantity of pod plant as the parameter. The result of this research show that Tanggamus was the variety which had quantity of pod most is about 108 and also the most high nitrogen content 3.218 % in both condition of pH.Keyword : Soil pH,Soybean, Root Nodule, Nitrogen, phosphorus