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Alida Lubis

University of North Sumatera

Author-ID : 3056671

Agriculture, Biological Sciences & Forestry

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Evaluasi Kesesuaian Lahan Tanaman Padi Sawah, Padi Gogo (Oryza sativa L.), Dan Sorgum (Shorgum bicolor) Di Kecamatan Sei Bamban Kabupaten Serdang Bedagai waskito waskito; Purba Marpaung; Alida Lubis
Jurnal Agroekoteknologi Vol 5, No 1 (2017)
Publisher : Universitas Sumatera Utara

This study aimed to evaluate the suitability of land on rice, upland rice and sorghum crops in Sei Bamban SubDistric of Serdang Bedagai District. It can be obtained 3 Land Mapping Units (SPL) which is determined based on the overlay result from the soil type map, slope maps and altitude map that is Inceptisol SPL 1, Ultisol SPL 2, and Ultisol SPL 3. This study used survey method. The results showed that the land suitability classes of actual rice and upland rice crops in the SPL 1 and SPL 3 is Marginally Suitable/S3nr by a nutrient retention barrier factor, for rice crops in the SPL 2 is Suitable/S2nr, and Suitable/S2wanr for upland rice crops with the barrier factor of excessive water availability (wa). While the potential classes of land suitability for rice and upland rice crops is Very Suitable/S1 for SPL 1, 2 and 3. The suitability class for actual sorghum crops on SPL 1, 2, and 3 is Not Suitable/Nwa with the barrier factor of excessive water availability (wa). While the potential land suitability classes is Suitable/S2tcwa by the barrier factor of temperature (tc) and the excessive water availability (wa) for SPL 1, 2, and 3. The conclusion is the low production of rice crops (55,96 qw/ha) on Inceptisol SPL 1 due to low C-organic content. On Ultisol SPL 2 due to low C-organic content and clay CEC. On Ultisol SPL 3 due to low C-organic content, clay CEC, and the slope is a little bit ramped.

Pengaruh Pemberian Pupuk Kandang Kerbau dan Dosis Pupuk Anorganik Terhadap Hara N, P, K Tanah, Pertumbuhan dan Produksi Bawang Merah (Allium ascalonicum L.) Erkwan Martinus; Hamidah Hanum; Alida Lubis
Jurnal Agroekoteknologi Vol 5, No 2 (2017)
Publisher : Universitas Sumatera Utara

Penelitian ini bertujuan untuk mengevaluasi hara N, P, K tanah, respon pertumbuhan dan produksi tanaman bawang merah varietas Medan terhadap pemberian pupuk kandang kerbau dan dosis pupuk anorganik di Desa Unjur Kecamatan Simanindo Kabupaten Samosir dan analisis tanah dilakukan di Laboratorium PT Nusa Pusaka Kencana, Tebing Tinggi. Penelitian ini dilaksanakan pada Januari sampai April 2016. Rancangan yang digunakan dalam penelitian ini adalah Rancangan Acak Kelompok (RAK) 2 faktor yang terdiri dari 2x5 taraf yaitu K0 (0 ton/ha pupuk kandang kerbau), K1 (15 ton/ha pupuk kandang kerbau), P0 (0 kg/ha NPK, 0 kg/ha ZA, 0 kg/ha KCl), P1 (65 kg/ha NPK, 65 kg/ha ZA, 15 kg/ha KCl), P2 (130 kg/ha NPK, 130 kg/ha ZA, 30 kg/ha KCl), P3 (195 kg/ha NPK, 195 kg/ha ZA, 45 kg/ha KCl), Px (800 kg/ha NPK, 400 kg/ha ZA, 0 kg/ha KCl) dengan jumlah ulangan sebanyak 3 ulangan. Hasil penelitian menunjukkan bahwa pemberian pupuk kandang meningkatkan panjang tanaman, bobot basah umbi dan bobot kering umbi bawang merah. Pemberian pupuk anorganik meningkatkan hara N dan P tanah, akan tetapi pada dosis tinggi, semakin tinggi dosis pupuk anorganik yang diberikan dapat menurunkan hasil produksi bawang merah. Produksi tertinggi terdapat pada perlakuan K1P1 (15 ton/ha pupuk kandang kerbau, 65 kg/ha NPK, 65 kg/ha ZA, 15 kg/ha KCl). Kata Kunci : bawang merah, pupuk anorganik, pupuk kandang kerbau

Some Changes in Chemical Properties on Ultisol Soil Giving Due Some of Organic Fertilizer and The Incubation Period Armada Karokaro; Alida Lubis; Fauzi jamal
Jurnal Agroekoteknologi Vol 5, No 2 (2017)
Publisher : Universitas Sumatera Utara

This research was conducted in the room of Laboratory, Agriculture Faculty , University of North Sumatera, Medan and soil analize in Analitical Laboratory of PT. Socfindo Medan in Maret-Juni 2016. This research used Completly Randomized Factorial Design, with 2 factors. The first factor is organic fertilizer consist of without organic fertilizers (P0), compost of Tithonia (P1), compost of durian’s shell (P2), compost of palm oil fruit bunches waste (P3), chicken manure (P4), compost of Tithonia + chicken manure (P5), compost of durian’s shell + chicken manure (P6), compost of palm oil fruit bunches waste + chicken manure (P7). The second factor is incubation period (I) are one week and two weeks. The result showed that application of organic fertilizer are compost of Tithonia, compost of durian’s shell, compost of palm oil fruit bunches waste, chicken manure, and the mixed compost with chicken manure was significant for C-Organic, totally soil-N, totally soil-P, and K exchange soil in Ultisol. The period incubation was not significant for C-Organik, totally soil-N, totally soil-P, and K exchange. The interaction of organic fertilizer application and period of incubation treatments was not significant for all parametric

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