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Bambang Siswo Susilo - One of the best experts on this subject based on the ideXlab platform.
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pengaruh zeolit dan pupuk kandang terhadap beberapa sifat fisik tanah ultisols dan Entisols pada pertanaman kedelai glycine max l merril
Jurnal Pembangunan Pedesaan, 2012Co-Authors: Bondansari Bondansari, Bambang Siswo SusiloAbstract:Pemanfaatan Ultisols dan Entisols untuk peningkatan produksi kedelai perlu dilakukan perbaikan kualitas tanah, diantaranya dengan penambahan zeolit dan pupuk kandang. Tujuan penelitian ini adalah untuk mengetahui pengaruh zeolit dan pupuk kandang terhadap sifat fisik Entisols dan Ultisols, pertumbuhan dan produksi kedelai. Penelitian dilakukan dengan percobaan pot di lahan percobaan Fakultas Pertanian Universitas Jenderal Soedirman. Perlakuan terdiri dari tiga faktor (tanah, zeolit dan pupuk kandang), yaitu 2 jenis tanah (Ultisols dan Entisols), 3 taraf dosis zeolit (0 ton/ha, 2 ton/ha, dan 4 ton/ha), dan 3 taraf dosis pupuk kandang sapi (0 ton/ha, 20 ton/ha, dan 30 ton/ha). Percobaan dirancang dengan menggunakan rancangan acak kelompok (RAK), ulangan 3 kali dan diperoleh 54 unit percobaan. Variabel yang diamati meliputi sifat fisik tanah, pertumbuhan dan produksi kedelai. Hasil penelitian menunjukkan bahwa: 1) peningkatan dosis zeolit sampai 4 ton/ha dan pupuk kandang sampai 30 ton/ha tidak berpengaruh terhadap berat jenis isi (BJI), berat jenis partikel (BJP), porositas tanah Ultisols maupun tanah Entisols, batas lekat (BL), batas gulung (BG), dan batas berubah warna (BBW), akan tetapi peningkatan dosis zeolit mampu meningkatkan nilai batas cair (BC) dan peningkatan dosis pupuk kandang mampu menurunkan indeks plastisitas (IP), dan 2) zeolit secara mandiri tidak berpengaruh dalam meningkatkan pertumbuhan dan produksi kedelai, sedangkan peningkatan dosis pupuk kandang mampu meningkatkan bobot basah polong, bobot kering polong dan jumlah polong kedelai.
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pengaruh zeolit dan pupuk kandang terhadap beberapa sifat fisik tanah ultisols dan Entisols pada pertanaman kedelai glycine max l merril
Jurnal Agronomika, 2011Co-Authors: Bondansari Bondansari, Bambang Siswo SusiloAbstract:Pemanfaatan tanah Ultisols dan tanah Entisols untuk peningkatan produksi kedelai perlu dilakukan perbaikan kualitas tanah, diantaranya dengan penambahan zeolid dan pupuk kandang. Pemanfaatan zeolit dan pupuk kandang diharapkan mampu sebagai bahan amelioran tanah sehingga produksi tanaman kedelai bias ditingkatkan. Terkait dengan hal tersebut telah dilakukan penelitian dengan tujuan untuk : 1) mengetahui pengaruh zeolit dan pupuk kandang terhadap beberapa sifat fisik tanah Entisols dan Ultisols dan 2) mengetahui pengaruh zeolit dan pupuk kandang terhadap pertumbuhan dan produksi tanaman kedelai pada tanah Entisols dan Ultisols. Penelitian dilakukan dengan percobaan pot di lahan percobaan Fakultas Pertanian Universitas Jenderal Soedirman. Perlakuan terdiri dari tiga faktor, yaitu jenis tanah, zeolit dan pupuk kandang, masing-masing 2 (dua) jenis tanah (T1: Ultisols dan T2: Entisols), 3 (tiga) taraf dosis zeolit (Z0: 0 ton/ha, Z1: 2 ton/ha, dan Z2: 4 ton/ha), dan 3 (tiga) taraf dosis pupuk kandang sapi (P0: 0 ton/ha, P1: 20 ton/ha, dan P2: 30 ton/ha). Percobaan dirancang dengan menggunakan rancangan acak kelompok (RAK), masing-masing kombinasi perlakuan diulang tiga kali dan diperoleh 54 unit percobaan. Variabel yang diamati meliputi variabel sifat fisik tanah, variabel pertumbuhan dan produksi tanaman. Hasil penelitian menunjukkan bahwa : 1) peningkatan zeolit sampai 4 ton/ha dan pupuk kandang sampai 30 ton/ha tidak berpengaruh terhadap berat jenis isi (BJI), berat jenis partikel (BJP) dan porositas tanah Ultisols maupun tanah Entisols, 2) nilai batas cair (BC) dipengaruh oleh dosis zeolit dan dosis pupuk kandang dan jenis tanahnya, batas lekat (BL) dan batas berubah warna (BBW) ditentukan oleh jenis tanah, sedangkan batas gulung (BG) dipengaruhi oleh interaksi antara jenis tanah dan dosis zeolit, 3) dosis zeolit dan dosis pupuk kandang tidak mempengaruhi nilai persediaan air maksimum (PAM) maupun jangka olah (JO) tanah Ultisols maupun tanah Entisols, dan nilai indek plastisitas (IP) selain dipengaruhi secara mandiri oleh jenis tanah juga dipengaruhi oleh dosis pupuk kandang, dan 4) peningkatan dosis pupuk kandang mampu meningkatkan bobot basah polong, bobot kering polong dan jumlah polong kedelai. Kata kunci: zeolit, pupuk kandang, ultisols, Entisols, kedelai ABSTRACT Use of land for Ultisols and Entisols soil increased soybean production is necessary to improve soil quality, such as by adding zeolid and manure. Utilization of zeolites and manure as an ingredient amelioran expected to land so that the production of soybean crops improved bias. Related to this has done research with the aim to: 1) determine the effect of zeolite and manure on some soil physical properties of Entisols and Ultisols and 2) determine the effect of zeolite and manure on the growth and production of soybean crops in the Entisols and Ultisols. The study was conducted with a pot experiment in field trials UnSoed Faculty of Agriculture. The treatment consists of three factors, namely the type of soil, zeolite and manure, each 2 (two) types of soil (T1: Ultisols and T2: Entisols), 3 (three) standard doses of zeolite (Z0: 0 tons / ha, Z1 : 2 tons / ha, and Z2: 4 tons / ha), and 3 (three) standard doses of cow manure (P0: 0 tons / ha, P1: 20 tons / ha, and P2: 30 tons / ha). The experiment was designed using a randomized block design (RBD), each treatment combination was repeated three times and obtained 54 experimental units. Variables observed include variable physical properties of soil, crop growth and production variables. The results show that: 1) an increase in the zeolite to 4 tons / ha and manure up to 30 tons / ha had no effect on bulk density, particle density and the porosity of the Ultisols and Entisols, 2) the limit value liquid influences include dose of zeolite and manure and soil type, the boundary attached and boundary change color is determined by the type of soil, whereas the limit of rolls is influenced by the interaction between soil type and dose of zeolite, 3 ) zeolite dose and dose of manure did not affect the value of the maximum water supply and term tillage Ultisols soil and Entisols soil, and the plasticity index in addition to independently influenced by the type of soil is also influenced by the dose of manure, and 4) increasing doses of manure can improve the wet weight of pods, dry weight of pods and pods of soybean. Key words: zeolid, manure, ultisols, Entisols, soybean
Uswah Hasanah - One of the best experts on this subject based on the ideXlab platform.
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SERAPAN N (NITROGEN) DAN PRODUKSI BAWANG MERAH (Allium ascallonicum L) VARIETAS LEMBAH PALU AKIBAT PEMBERIAN BOKASHI TITONIA (Titonia diversifolia) PADA Entisol GUNTARANO Uptake of Natrium (N) and Yield of Onion (Allium ascallonicum L) on Entisol By
2020Co-Authors: Chandra Rukmana Putra, Wahyudi, Uswah HasanahAbstract:An experiment was conducted to determine the effect of Titoniabokashi on the changes in the level of uptake of natrium (N) and yield of onion (Allium ascalonicum L.) on Entisol by giving an application of Titonia bokashi on Entisol. The research wasarranged inRandomized Block Design(RBD) with dose ofbokashias follows:to= withouttreatment t1 = 5 t ha -1 t2 = 10 t ha -1 t3 = 15 t ha -1 t4= 20 t ha -1 t5 = 25 t ha -1 t6 = 30 t ha -1 . Each treatment was repeated three times so that there were 21 experimental units. The applicaton of Titonia bokashiuptoa dose of 30tha -1 was proveneffectively increaseC-organic, N-total, plant dry weight, plant N-concentration, N uptake, wet and dry weightof onionbulbsvariety ofPaluValley. The highest level of nitrogen uptake (16,09g) can beachieved at a dose of 30tha -1 , and maximum wet and dry weight ofonion bulbsperclumpachieved ata dose of 30 t ha -1 .
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RESPON TANAMAN TOMAT (Lycopersicum esculentum Mill) PADA AWAL PERTUMBUHAN TERHADAP KERAGAMAN UKURAN AGREGAT Entisol Responses of Tomato Plant (Lycopersicum esculentum Mill) Grown on Different Aggregate Sizes of Entisol
2020Co-Authors: Uswah HasanahAbstract:The distribution of soil structural units controls theavailability of oxygen, water, and the resistance to penetration by shoots and roots in seedbeds created by tillage. The objective of this study was to determine the effects of variation in soil aggregate size distribution on early growth and evapotranspiration of tomato. Fresh and dry matter of tomato, root length and evapotranspiration, determined 5 weeks after planting, were evaluated in a green house experiment with packed soil aggregates sieved from an Entisol. A complete randomized design of 3 different aggregate size distribution (
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respon tanaman tomat lycopersicum esculentum mill pada awal pertumbuhan terhadap keragaman ukuran agregat Entisol
Agroland: Jurnal Ilmu-ilmu Pertanian, 2012Co-Authors: Uswah HasanahAbstract:The distribution of soil structural units controls theavailability of oxygen, water, and the resistance to penetration by shoots and roots in seedbeds created by tillage. The objective of this study was to determine the effects of variation in soil aggregate size distribution on early growth and evapotranspiration of tomato. Fresh and dry matter of tomato, root length and evapotranspiration, determined 5 weeks after planting, were evaluated in a green house experiment with packed soil aggregates sieved from an Entisol. A complete randomized design of 3 different aggregate size distribution (<0.5; 0,5-2; and 2-4 mm) was applied. Increasing aggregate size distribution caused the fresh and dry matter of shoot and root and root length to increase corresponding to decrease in soil bulk density. The aggregate size distribution of 2-4 mm produced the most optimal Entisol structure for early growth of tomato.
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RESPON TANAMAN TOMAT (Lycopersicum esculentum Mill) PADA AWAL PERTUMBUHAN TERHADAP KERAGAMAN UKURAN AGREGAT Entisol
2012Co-Authors: Uswah HasanahAbstract:The distribution of soil structural units controls theavailability of oxygen, water, and the resistance to penetration by shoots and roots in seedbeds created by tillage. The objective of this study was to determine the effects of variation in soil aggregate size distribution on early growth and evapotranspiration of tomato. Fresh and dry matter of tomato, root length and evapotranspiration, determined 5 weeks after planting, were evaluated in a green house experiment with packed soil aggregates sieved from an Entisol. A complete randomized design of 3 different aggregate size distribution (
Bondansari Bondansari - One of the best experts on this subject based on the ideXlab platform.
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pengaruh zeolit dan pupuk kandang terhadap beberapa sifat fisik tanah ultisols dan Entisols pada pertanaman kedelai glycine max l merril
Jurnal Pembangunan Pedesaan, 2012Co-Authors: Bondansari Bondansari, Bambang Siswo SusiloAbstract:Pemanfaatan Ultisols dan Entisols untuk peningkatan produksi kedelai perlu dilakukan perbaikan kualitas tanah, diantaranya dengan penambahan zeolit dan pupuk kandang. Tujuan penelitian ini adalah untuk mengetahui pengaruh zeolit dan pupuk kandang terhadap sifat fisik Entisols dan Ultisols, pertumbuhan dan produksi kedelai. Penelitian dilakukan dengan percobaan pot di lahan percobaan Fakultas Pertanian Universitas Jenderal Soedirman. Perlakuan terdiri dari tiga faktor (tanah, zeolit dan pupuk kandang), yaitu 2 jenis tanah (Ultisols dan Entisols), 3 taraf dosis zeolit (0 ton/ha, 2 ton/ha, dan 4 ton/ha), dan 3 taraf dosis pupuk kandang sapi (0 ton/ha, 20 ton/ha, dan 30 ton/ha). Percobaan dirancang dengan menggunakan rancangan acak kelompok (RAK), ulangan 3 kali dan diperoleh 54 unit percobaan. Variabel yang diamati meliputi sifat fisik tanah, pertumbuhan dan produksi kedelai. Hasil penelitian menunjukkan bahwa: 1) peningkatan dosis zeolit sampai 4 ton/ha dan pupuk kandang sampai 30 ton/ha tidak berpengaruh terhadap berat jenis isi (BJI), berat jenis partikel (BJP), porositas tanah Ultisols maupun tanah Entisols, batas lekat (BL), batas gulung (BG), dan batas berubah warna (BBW), akan tetapi peningkatan dosis zeolit mampu meningkatkan nilai batas cair (BC) dan peningkatan dosis pupuk kandang mampu menurunkan indeks plastisitas (IP), dan 2) zeolit secara mandiri tidak berpengaruh dalam meningkatkan pertumbuhan dan produksi kedelai, sedangkan peningkatan dosis pupuk kandang mampu meningkatkan bobot basah polong, bobot kering polong dan jumlah polong kedelai.
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pengaruh zeolit dan pupuk kandang terhadap beberapa sifat fisik tanah ultisols dan Entisols pada pertanaman kedelai glycine max l merril
Jurnal Agronomika, 2011Co-Authors: Bondansari Bondansari, Bambang Siswo SusiloAbstract:Pemanfaatan tanah Ultisols dan tanah Entisols untuk peningkatan produksi kedelai perlu dilakukan perbaikan kualitas tanah, diantaranya dengan penambahan zeolid dan pupuk kandang. Pemanfaatan zeolit dan pupuk kandang diharapkan mampu sebagai bahan amelioran tanah sehingga produksi tanaman kedelai bias ditingkatkan. Terkait dengan hal tersebut telah dilakukan penelitian dengan tujuan untuk : 1) mengetahui pengaruh zeolit dan pupuk kandang terhadap beberapa sifat fisik tanah Entisols dan Ultisols dan 2) mengetahui pengaruh zeolit dan pupuk kandang terhadap pertumbuhan dan produksi tanaman kedelai pada tanah Entisols dan Ultisols. Penelitian dilakukan dengan percobaan pot di lahan percobaan Fakultas Pertanian Universitas Jenderal Soedirman. Perlakuan terdiri dari tiga faktor, yaitu jenis tanah, zeolit dan pupuk kandang, masing-masing 2 (dua) jenis tanah (T1: Ultisols dan T2: Entisols), 3 (tiga) taraf dosis zeolit (Z0: 0 ton/ha, Z1: 2 ton/ha, dan Z2: 4 ton/ha), dan 3 (tiga) taraf dosis pupuk kandang sapi (P0: 0 ton/ha, P1: 20 ton/ha, dan P2: 30 ton/ha). Percobaan dirancang dengan menggunakan rancangan acak kelompok (RAK), masing-masing kombinasi perlakuan diulang tiga kali dan diperoleh 54 unit percobaan. Variabel yang diamati meliputi variabel sifat fisik tanah, variabel pertumbuhan dan produksi tanaman. Hasil penelitian menunjukkan bahwa : 1) peningkatan zeolit sampai 4 ton/ha dan pupuk kandang sampai 30 ton/ha tidak berpengaruh terhadap berat jenis isi (BJI), berat jenis partikel (BJP) dan porositas tanah Ultisols maupun tanah Entisols, 2) nilai batas cair (BC) dipengaruh oleh dosis zeolit dan dosis pupuk kandang dan jenis tanahnya, batas lekat (BL) dan batas berubah warna (BBW) ditentukan oleh jenis tanah, sedangkan batas gulung (BG) dipengaruhi oleh interaksi antara jenis tanah dan dosis zeolit, 3) dosis zeolit dan dosis pupuk kandang tidak mempengaruhi nilai persediaan air maksimum (PAM) maupun jangka olah (JO) tanah Ultisols maupun tanah Entisols, dan nilai indek plastisitas (IP) selain dipengaruhi secara mandiri oleh jenis tanah juga dipengaruhi oleh dosis pupuk kandang, dan 4) peningkatan dosis pupuk kandang mampu meningkatkan bobot basah polong, bobot kering polong dan jumlah polong kedelai. Kata kunci: zeolit, pupuk kandang, ultisols, Entisols, kedelai ABSTRACT Use of land for Ultisols and Entisols soil increased soybean production is necessary to improve soil quality, such as by adding zeolid and manure. Utilization of zeolites and manure as an ingredient amelioran expected to land so that the production of soybean crops improved bias. Related to this has done research with the aim to: 1) determine the effect of zeolite and manure on some soil physical properties of Entisols and Ultisols and 2) determine the effect of zeolite and manure on the growth and production of soybean crops in the Entisols and Ultisols. The study was conducted with a pot experiment in field trials UnSoed Faculty of Agriculture. The treatment consists of three factors, namely the type of soil, zeolite and manure, each 2 (two) types of soil (T1: Ultisols and T2: Entisols), 3 (three) standard doses of zeolite (Z0: 0 tons / ha, Z1 : 2 tons / ha, and Z2: 4 tons / ha), and 3 (three) standard doses of cow manure (P0: 0 tons / ha, P1: 20 tons / ha, and P2: 30 tons / ha). The experiment was designed using a randomized block design (RBD), each treatment combination was repeated three times and obtained 54 experimental units. Variables observed include variable physical properties of soil, crop growth and production variables. The results show that: 1) an increase in the zeolite to 4 tons / ha and manure up to 30 tons / ha had no effect on bulk density, particle density and the porosity of the Ultisols and Entisols, 2) the limit value liquid influences include dose of zeolite and manure and soil type, the boundary attached and boundary change color is determined by the type of soil, whereas the limit of rolls is influenced by the interaction between soil type and dose of zeolite, 3 ) zeolite dose and dose of manure did not affect the value of the maximum water supply and term tillage Ultisols soil and Entisols soil, and the plasticity index in addition to independently influenced by the type of soil is also influenced by the dose of manure, and 4) increasing doses of manure can improve the wet weight of pods, dry weight of pods and pods of soybean. Key words: zeolid, manure, ultisols, Entisols, soybean
Sumarno Sumarno - One of the best experts on this subject based on the ideXlab platform.
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PENGARUH SAAT PEMUPUKAN UREA PADA SISTEM GANDA AZOLLA-PADI SAWAH TERHADAP N-KAPITAL TANAH DAN HASIL PADI DI Entisol (Fertilizing Time Effect of Urea in Dual System Azolla-Rice Paddy to Soil Capital Nitrogen and Rice Yield on Entisol)
2020Co-Authors: Sumarno SumarnoAbstract:The purposed of research was to study the effect of urea use in dual system azolla-rice paddy to soil capital nitrogen and rice yield on Entisol. Research was conducted on rice paddy field at Colomadu, Karanganyar district, Central Java. The experiment arranged in single factor randomized completely block design (RCBD), with eight treatments says D1 (azolla + 100 kg urea /ha at 0 day after planting-dap), D2 (azolla + 100 kg urea /ha at 30 dap), D3 (azolla + 100 kg urea /ha at 60 dap), D4 (azolla + 50 kg urea /ha at 0 and 30 dap), D5 (azolla + 50 kg urea /ha at 30 and 60 dap), D6 (azolla + 50 kg urea /ha at 0 and 60 dap), D7 (control treatment - without azolla nor NPK fertilizer), and D8 (lokal farmer treatment - 250 kg urea /ha split three times, 50 kg/ha at 0 dap, 100 kg/ha at 30 dap and 100 kg/ha at 60 dap). Azolla inoculums spreaded 7 dap at rates 500 g/m 2 . Variables observed were soil capital nitrogen, soil total-N, tissue total-N, soil organic matter content and rice yield. Data taken was analyzed with anova and followed with Duncan Multiple Range Test (DMRT) at 5 % level of significant. The results show that the use of urea in dual system azolla-rice paddy increase soil capital nitrogen, soil total-N, tissue total-N, soil organic matter content and rice yield at Entisol. The highest soil capital nitrogen (0,953 kg/ha) and rice yield (8 ton/ha) were taken from the treatment of D8 and D3 respectively.
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Pengaruh Saat Pemupukan Urea pada Sistem Ganda Azolla‐Padi Sawah terhadap N‐Kapital Tanah dan Hasil Padi di Entisol
Sains Tanah: Journal of Soil Science and Agroclimatology, 2013Co-Authors: Sudadi Sudadi, Sumarno SumarnoAbstract:Title : Fertilizing Time Effect of Urea in Dual System Azolla‐Rice Paddy to Soil Capital Nitrogen and Rice Yield on Entisol. The purposed of research was to study the effect of urea use in dual system azolla‐rice paddy to soil capital nitrogen and rice yield on Entisol. Research was conducted on rice paddy field at Colomadu, Karanganyar district, Central Java. The experiment arranged in single factor randomized completely block design (RCBD), with eight treatments says D1 (azolla + 100 kg urea /ha at 0 day after planting‐dap), D2 (azolla + 100 kg urea /ha at 30 dap), D3 (azolla + 100 kg urea /ha at 60 dap), D4 (azolla + 50 kg urea /ha at 0 and 30 dap), D5 (azolla + 50 kg urea /ha at 30 and 60 dap), D6 (azolla + 50 kg urea /ha at 0 and 60 dap), D7 (control treatment ‐ without azolla nor NPK fertilizer), and D8 (lokal farmer treatment ‐ 250 kg urea /ha split three times, 50 kg/ha at 0 dap, 100 kg/ha at 30 dap and 100 kg/ha at 60 dap). Azolla inoculums spreaded 7 dap at rates 500 g/m2. Variables observed were soil capital nitrogen, soil total‐N, tissue total‐N, soil organic matter content and rice yield. Data taken was analyzed with anova and followed with Duncan Multiple Range Test (DMRT) at 5 % level of significant. The results show that the use of urea in dual system azolla‐rice paddy increase soil capital nitrogen, soil total‐N, tissue total‐N, soil organic matter content and rice yield at Entisol. The highest soil capital nitrogen (0,953 kg/ha) and rice yield (8 ton/ha) were taken from the treatment of D8 and D3 respectively. Keywords: azolla‐rice paddy, rice yield, soil capital nitrogen, Urea
Retno Suntari - One of the best experts on this subject based on the ideXlab platform.
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pengaruh aplikasi kompos crotalaria juncea l terhadap ketersediaan dan serapan ca mg s oleh jagung manis zea mays saccharata sturt di Entisol wajak malang
JTSL (Jurnal Tanah dan Sumberdaya Lahan), 2020Co-Authors: Retno Suntari, Muhammad Abdi Guna WiyahyaAbstract:Entisol is a type of soil at the initial development stage and has a texture dominated by sand fraction. This causes a decrease in soil quality and can reduce crop production. This compost of leguminase plants can play a role in improving soil chemical properties. The purpose of this research was to determine the effect of Crotalaria juncea L. compost application on the availability of secondary macro nutrients Ca, Mg, and S, and uptake of Ca, Mg, and S by sweet corn plant in Entisol, Wajak. Treatments tested were C0 (Urea 100%), C1 (Compost Crotalaria juncea L. 100% + Urea 75%), C2 (Compost Crotalaria juncea L. 100% + Urea 75%), C3 (Compost Crotalaria juncea L. 100%), C4 (Compost Crotalaria juncea L. 200%). The five treatments were arranged in a completely randomized design with three replications. The results showed that the application of Crotalaria juncea L. compost (20 t ha -1 ) significantly increased the availability of Ca, Mg and S on 12 weeks by 41.6%, 96.71% and 133.78%, respectively. The application of Crotalaria juncea L. compost (20 t ha -1 ) did not significantly increase uptake of Ca, Mg and S.
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efektifitas kompos tanaman crotalaria juncea pada ketersediaan dan serapan n p k serta pertumbuhan tanaman jagung manis zea mays saccharata sturt pada Entisol wajak malang
Jurnal Tanah dan Sumberdaya Lahan, 2018Co-Authors: Laksono Raditya, Retno SuntariAbstract:The problem of Entisol used for agricultural land is the loss of nutrients due to leaching and evaporation. It is thus necessary to keep the nutrients available in the soil. The purpose from this research was (1) to know the effectiveness of Crotalaria juncea compost application on the availability of N, P, and K on Entisol Wajak, and (2) to assess the effectiveness of Crotalaria juncea compost application on uptake of N, P, K and growth of sweet corn in an Entisol of Wajak, Malang. This research used a completely randomized design with five treatments and three replications, i.e. C0 (Urea 100%), C1 ( Crotalaria juncea compost 100% + Urea 75%), C2 ( Crotalaria juncea compost 100% + Urea 75%), C3 ( Crotalaria juncea compost 100%), C4 ( Crotalaria juncea compost 200%). The results showed that application of Crotalaria juncea compost 100% (10 t ha -1 ) did not significantly affect available-P but it significantly increased available-N at 4 and 8 weeks with the effectiveness of 39% and 79.66%, and significantly increased the available-K at 8 and 12 weeks with effectiveness of 38.75% and 33.33% compared to 100% urea application (288 kg ha -1 ). Applications of 100% Crotalaria juncea compost (10 t ha -1 ) did not significantly affect plant growth (dry weight and plant height) as well as the N and K uptake, but increased the effectiveness of the P uptake 2.07% compared to 100% urea application (288 kg ha -1 ).
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PENGARUH DOSIS UREA-HUMAT TERHADAP KETERSEDIAAN N PADA Entisol DAN SERAPAN N OLEH TANAMAN JAGUNG
2017Co-Authors: Yerli Yuspita Tampubolon, Retno SuntariAbstract:The constrains of corn cultivation on Entisol is due to the low nutrient absorption, one of this element is Nitrogen. The reason is Nitrogen can easily for leached from the soil in the form of nitrate (N-NO 3 - ), and will volatilized into the air in the form of ammonia gas (NH 3 ) or left in the ground so it can't be absorbed by plants. One effort that can be done to address the problems of Entisol is with the addition of organic matter as well as a balance fertilizer. Organic ingredients are used in the research is mixed with humic acid with urea. This study was aimed to examine the influence of application of urea-humate dosage on N availability and uptake of N of corn. The results showed a significant effect of application of urea-humate to NH 4 + and NO 3 - at 30 DAI. The urea-humic acid could improve soil pH, soil CEC, plant height, and total dry weight. Correlation between soil N-available level with uptake of N level was significant at p = 0,05 (r = 0,81). Urea humate 125% has the highest increase of 49,32% on N-uptake of corn compared with the treatment of urea