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Journal : Jurnal Pertanian Agros

PENGARUH KANDUNGAN BIOLOGICAL OXYGEN DEMAND AIR LIMBAH PENGOLAHAN KELAPA SAWIT TERHADAP KANDUNGAN UNSUR HARA NPK TANAH DAN PERTUMBUHAN TANAMAN JAGUNG Riduansyah, Riduansyah; Junaidi, Junaidi; Widiarso, Bambang; Kurnia, Kurnia; Maulidi, Maulidi
Agros Journal of Agriculture Science Vol 26, No 1 (2024): Januari
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v26i1.4281

Abstract

The research aims to determine (1) the relationship between Biological Oxygen Demand (BOD) content and the nutrient content of anaerobic and aerobic pond wastewater; (2) the level of efficiency of inorganic fertilizer with the utilization of liquid waste at several waste water BOD levels; (3) the effect of providing liquid palm oil waste on the growth and yield of corn plants; (4) corn growth and yield at several wastewater BOD levels. The research was conducted at the experimental garden of the Faculty of Agriculture, Tanjungpura University. Soil analysis was carried out at the Soil Chemistry and Fertility Laboratory and wastewater BOD analysis was carried out at the Soil Health Laboratory, Department of Soil Science, Faculty of Agriculture, Tanjungpura University. The research used experimental methods with a Completely Randomized Factorial Design with treatments: 0 NPK, 2.25-0.75-040 NPK, and 4.5-1.5-0.75 NPK as well as giving Palm Oil Mill Effluent (POME) 100, 75, 50, and 25% BOD of anaerobic and aerobic wastewater ponds, so that 24 treatments were obtained, with 3 repetitions, 72 polybags. The waste water dose of 9 l per polybag is poured 3 l each per polybag in the morning, afternoon and evening. Variables observed: plant height, stem diameter, and number of leaves. Research results: giving POME to anaerobic and aerobic ponds until the 5th week did not have a real effect on height, stem diameter and number of corn leaves, but giving fertilizer until the 5th week had a real effect. Based on the Least Significant Difference Test (LSD)  results, the best treatment is the L3N2 treatment (25% Liquid Palm Oil Waste and 9 g Urea, 7.50 g Sp-36, 5.6 g KCl). Keywords: corn; npk fertilizer; palm oil wastewater  INTISARIPenelitian bertujuan untuk mengetahui (1) hubungan kandungan Biological Oxygen Demand (BOD) dengan kandungan hara air limbah kolam anaerobikdan aerobik; (2) tingkat efisiensi pupuk anorganik dengan pemanfaatan limbah cair pada beberapa level BOD air limbah; (3) pengaruh pemberian limbah cair kelapa sawit (LCKS) terhadap pertumbuhan dan hasil tanaman jagung; (4) pertumbuhan dan hasil jagung pada beberapa level BOD air limbah. Penelitian dilakukan di kebun percobaan Fakultas Pertanian Universitas Tanjungpura. Analisis tanah dilaksanakan di Laboratorium Kimia dan Kesuburan Tanah serta analisis BOD air limbah dilaksanakan di Laboratorium Kesehatan Tanah Jurusan Ilmu Tanah, Fakultas Pertanian, Universitas Tanjungpura. Peneltian menggunakan metode eksperimen dengan Rancangan Acak Lengkap Faktorial dengan perlakuan: 0 NPK, 2,25-0,75-040 NPK, dan 4,5-1,5-0,75 NPK serta pemberian Palm Oil Mill Effluent (POME) 100, 75, 50, dan 25 % BOD kolam air limbah anaerob dan aerob, sehingga diperoleh 24 perlakuan, dengan ulangan 3 kali ,72 polybag. Dosis air limbah 9 l per polybag disiramkan masing-masing 3 l per polybag pagi, siang dan sore. Variabel yang diamati: tinggi tanaman, diameter batang, dan jumlah daun. Hasil penelitian: pemberian POME kolam anaerobik maupun aerobik sampai pada mingu ke 5 tidak memberikan pengaruh nyata pada tinggi, diameter batang, dan jumlah helaian daun jagung, namun pemberian pupuk sampai minggu ke 5 memberikan pengaruh nyata. Berdasarkan hasil uji BNT perlakuan terbaik adalah perlakuan L3N2 (Limbah Cair Kelapa Sawit (LCKS) 25% dan 9  g Urea, 7,50 g SP-36, 5,6 g KCl).   Kata kunci: air limbah kelapa sawit; jagung; pupuk npk
PENGARUH KAPUR DOLOMIT DAN PUPUK NPK TERHADAP PERTUMBUHAN TANAMAN PORANG( Amorphophallus muelleri) PADA TANAH GAMBUT Yuniarti, Fitria; Susana, Rini; Maulidi, Maulidi; Palupi, Tantri; Apindiati, Rita Kurnia
Agros Journal of Agriculture Science Vol 26, No 1 (2024): Januari
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v26i1.4282

Abstract

Porang plants can grow in peat soil, but the pH of the acidic peat soil must be increased. An increase in optimal soil pH will increase nutrient availability so that the efficiency of the NPK fertilizer applied will increase. This research aims to obtain the best dose of dolomite lime and NPK fertilizer for the growth of porang plants on peat soil. This research will last for 3 months starting in August - November 2023, located in South Pontianak District, Pontianak City. The design used was a Completely Randomized Factorial Design consisting of 2 factors. The dolomite lime factor (K) consists of 3 levels, namely k1 = 3.11 tons/ha, k2 = 4.99 tons/ha, k3 = 6.88 tons/ha and the NPK fertilizer factor (N) consists of 3 levels, namely n1 = 100 kg/ha, n2 = 200 kg/ha, n3 = 300 kg/ha. Observation variables include: plant height, stem diameter, number of leaves, and time of frog appearance. The research results showed that there was no interaction between dolomite dose and NPK dose on all observed variables. All single factor lime doses and single factor NPK doses had the same effect on the growth of porang plants in peat soil. Dolomite lime dosage of 3.11 tonnes/ha and NPK fertilizer dosage of 100kg/ha are sufficient to support the growth of porang plants. Keywords : dolomite, NPK fertilizer, porang, peat soil INTISARITanaman porang dapat tumbuh pada tanah gambut, namun pH tanah gambut yang masam harus ditingkatkan. Kenaikan pH tanah yang optimal akan meningkatkan ketersediaan hara sehingga efisiensi pemupukan NPK yang diberikan akan meningkat. Penelitian ini bertujuan untuk mendapatkan dosis kapur dolomit dan pupuk NPK terbaik terhadap pertumbuhan tanaman porang pada tanah gambut. Penelitian ini ini berlangsung selama 3 bulan yang dimulai pada bulan Agustus - November 2023 yang berlokasi di Kecamatan Pontianak Selatan, Kota Pontianak. Rancangan yang digunakan adalah Faktorial Rancangan Acak Lengkap yang terdiri dari 2 faktor. Faktor kapur dolomit (K) terdiri dari 3 taraf yaitu k1 = 3,11 ton/ha, k2 = 4,99 ton/ha, k3 = 6,88 ton/ha dan faktor pupuk NPK (N) terdiri dari 3 taraf yaitu n1 = 100 kg/ha, n2 = 200 kg/ha, n3 = 300 kg/ha. Variabel pengamatan meliputi : tinggi tanaman, diameter batang, jumlah daun, dan waktu kemunculan katak. Hasil penelitian menunjukkan bahwa tidak ditemukan interaksi antara dosis dolomit dan dosis NPK pada semua variabel pengamatan. Semua dosis kapur faktor tunggal dan dosis NPK faktor tunggal memberikan pengaruh yang sama terhadap pertumbuhan tanaman porang di tanah gambut. Dosis kapur dolomit 3,11 ton/ha dan dosis pupuk NPK 100kg/ha sudah cukup untuk mendukung pertumbuhan tanaman porang. Kata kunci : kapur dolomit, pupuk NPK, porang, tanah gambut.
PENGARUH KONSENTRASI PACLOBUTRAZOL PADA BERBAGAI SISTEM TANAM TERHADAP PERTUMBUHAN DAN HASIL JAGUNG MANIS PADA TANAH GAMBUT DI DESA RASAU JAYA 2 Maulidi, Maulidi; Warganda, Warganda; Darussalam, Darussalam; Pangestu, Abdur Rahman
Agros Journal of Agriculture Science Vol 26, No 1 (2024): Januari
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v26i1.3806

Abstract

Sweet corn (Zea mays saccharata L.) is a plant that contains more carbohydrates so that it becomes one of the second most important commodities after rice, both as a source of food and feed. The objectives of this study were to obtain the best Paclobutrazol Concentration on the Growth and Yield of Sweet Corn on Peat Soil in Rasau Jaya 2 and to obtain the best Planting System on the Growth and Yield of Sweet Corn on Peat Soil in Rasau Jaya. The research was conducted on Mr. Sugianto's land located at Patok 28, Rasau Jaya 2 Village, Rasau Jaya District, Kubu Raya Regency. This research took place from July 24, 2023 - September 30, 2023. This study used a Split Plot Design consisting of 2 factors. The first factor is the concentration of Paclobutrazol (P) which consists of 4 treatment levels and the second factor is a modified double row planting system (D) with 3 treatment levels, so that the total treatment combination is 12. Each treatment combination was repeated 3 times and each treatment unit consisted of 5 plant samples.  In the Split Plot Design, Paclobutrazol concentration (P) was used as the main plot, while the modified double row planting system (D) was used as a sub plot. The observed variables were plant height, stem diameter, number of leaves, plant fresh weight, plant dry weight, leaf area, root volume, ear weight per plot, weight of ear, weight of ear without shell, weight per ear without shell, ear with shell and ear without shell. Observation data were statistically analyzed using variance (F test at 5% level). If the F test showed a real effect, then the Honestly Significant Difference (HSD) test was continued at the 5% level. On the basis of the results of the study, it can be concluded that the single application of paclobutrazol can suppress the plant height but has the same effect of reduction of plant height by 3-5 cm. The planting system (15+15) cm x 80 cm with the use of paclobutrazol 1000 ppm can increase the weight of cob per plot better than other planting systems. Keywords: Soil, Sweet Corn, Paclobutrazol, Planting System. INTISARIJagung manis (Zea mays saccharata L.) merupakan tanaman yang mengandung karbohidrat lebih banyak sehingga menjadi salah satu komoditi terpenting kedua setelah padi, baik sebagai sumber pangan maupun pakan. Tujuan penelitian ini adalah untuk mendapatkan Konsentrasi Paclobutrazol terbaik terhadap Pertumbuhan dan Hasil Jagung Manis pada Tanah Gambut di Rasau Jaya 2 dan untuk mendapatkan Sistem Tanam terbaik terhadap Pertumbuhan dan Hasil Jagung Manis pada Tanah Gambut di Rasau Jaya. Penelitian dilaksanakan di lahan Bapak Sugianto yang berada di Patok 28, Desa Rasau Jaya 2, Kecamatan Rasau Jaya, Kabupaten Kubu Raya. Penelitian ini berlangsung dari tanggal 24 Juli 2023 – 30 September 2023. Penelitian ini menggunakan Rancangan Petak Terbagi (Split Plot Design) yang terdiri dari 2 faktor. Faktor pertama yaitu konsentrasi Paclobutrazol (P) yang terdiri dari 4 taraf perlakuan dan faktor kedua adalah modifikasi Sistem Tanam double row (D) dengan 3 taraf perlakuan, sehingga total kombinasi perlakuan sebanyak 12 . Setiap kombinasi perlakuan diulang sebanyak 3 kali dan masing-masing unit perlakuan terdiri 5 sampel tanaman.  Pada rancangan Split Plot Design konsentrasi Paclobutrazol (P) dijadikan petak utama (main plot), sedangkan modifikasi Sistem Tanam double row (D) dijadikan sebagai anak petak (sub plot). Variabel yang diamati yaitu tinggi tanaman, diameter batang, jumlah daun, bobot segar tanaman, bobot kering tanaman, luas daun, volume akar, bobot tongkol per petak, bobot per tongkol berkelobot, bobot per tongkol tanpa kelobot, panjang tongkol dan diameter tongkol. Data hasil pengamatan dianalisis secara statistik dengan menggunakan varians (uji F taraf 5%). Apabila uji F menunjukkan adanya pengaruh nyata, maka dilanjutkn uji Beda Nyata Jujur (BNJ) pada taraf 5%. Berdasarkan hasil penelitian maka dapat disimpulkan bahwa pemberian paclobutrazol secara tunggal dapat menekan tinggi tanaman namun memberikan pengaruh yang sama pengurangan tinggi tanaman 3-5 cm. Sistem tanam (15+15)cm x 80 cm dengan penggunaan paclobutrazol 1000 ppm dapat meningkatkan bobot tongkol perpetak lebih baik dibandingkan sistem tanam lainnya. Kata Kunci : Gambut, Jagung Manis, Paclobutrazol, Sistem Tanam.
PENGARUH PLANT GROWTH PROMOTING RHIZOBACTERIA (PGPR) AKAR BAMBU DAN PUPUK KNO3 TERHADAP PERTUMBUHAN DAN HASIL KEDELAI EDAMAME PADA TANAH GAMBUT Syahbani, La Muhammad Imam; Maulidi, Maulidi; Zulfita, Dwi
Agros Journal of Agriculture Science Vol 26, No 2 (2024): Edisi Juli
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v26i2.4752

Abstract

The improvement of edamame soybean on peat soil is done by applying PGPR bamboo root and KNO3 fertilization. The purpose of the study was to determine the effect of the interaction between bamboo root PGPR concentration and KNO3 dosage and to determine the best concentration of bamboo root PGPR and KNO3 dosage on the yield and growth of edamame soybean plants on peat soil. This study uses a Factorial Complete Randomized Design (CRD) consisting of 2 treatment factors repeated 3 times. The first factor is PGPR bamboo root (P) consisting of 3 levels (p1 = 15 ml/L, p2 = 20 ml/L, p3 = 25 ml/L) and KNO3 fertilizer (K) consisting of 3 levels (k1 = 500 kg/ha equivalent to 2.5 g/plant, k2 = 600 kg/ha equivalent to 3 g/plant, k3 = 700 kg/ha equivalent to 3.5 g/plant). Based on the results showed that there was an interaction between the application of PGPR and KNO3 fertilizer on the growth and yield of edamame soybean on peatland and the interaction between PGPR concentration of 20 ml/L and KNO3 fertilizer dose of 500 kg/ha equivalent to 2.5 g/plant is an effective dose to increase the growth and yield of edamame soybean on peat soil.
PENGARUH KONSENTRASI BOD LIMBAH CAIR KELAPA SAWIT KOLAM ANAEROBIK DAN PUPUK NPK TERHADAP KANDUNGAN HARA N, P, K TANAH, PERTUMBUHAN SERTA HASIL TANAMAN JAGUNG MANIS PADA TANAH ALUVIAL Maulidi, Maulidi; Riduansyah, Riduansyah; Hayati, Rita
Agros Journal of Agriculture Science Vol 26, No 1 (2024): Edisi APRIL
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v26i1.4203

Abstract

The low level of organic matter in alluvial soil requires amendments to improve soil structure by adding liquid palm oil waste as organic fertilizer which can improve soil structure and enrich organic carbon in the soil and increase soil pH. This research aims to find the interaction effect of BOD (Biological Oxygen Demand) concentration of liquid palm oil waste from anaerobic ponds and NPK fertilizer on soil N, P, K nutrient content, growth and yield of sweet corn plants on alluvial soil. The research was conducted at the experimental garden of the Faculty of Agriculture, Tanjungpura University. Analysis of BOD, N, P and K levels of liquid waste was carried out at the Land Quality and Health Laboratory, Faculty of Agriculture, Tanjungpura University. Analysis of the N, P, K elements of liquid waste was carried out at the Chemistry and Soil Fertility Laboratory, Faculty of Agriculture, Tanjungpura University. The research took place from August to December 2023. This research method was a field experiment with a two-factorial Completely Randomized Design. The first factor consists of three levels, namely: N0 (0 g Urea, 0 g SP-36, and 0 g KCl), N1 (4.5 g Urea, 3.75 g SP-36, 2.8 g KCl), N2 (9 g Urea, 7.50 g SP-36, 5.6 g KCl) and the second factor consists of four levels, namely: L0 (Palm Oil Liquid Waste/LCKS 100%), L1 (LCKS 75%), L2 (LCKS 50%), L3 (LCKS 25%), each treatment was repeated three times to obtain 36 plant samples. Variables observed: soil reaction (pH H2O), C-organic, N-total, P-available, K-available, plant height, stem diameter, number of leaves, and weight of cobs with husks and weight of cobs without husks. The results showed that the anaerobic pond LCKS treatment had a real influence on soil pH, available K, and plant height, while the NPK fertilizer treatment had a real influence on soil pH, total N, available K, plant height, stem diameter, number of leaves, and results of cob weight with husk and husk weight without husk. Keywords: alluvial, sweet corn, palm oil liquid waste, NPK fertilizerINTISARIRendahnya bahan organik pada tanah aluvial membutuhkan bahan pembenah untuk memperbaiki struktur tanah dengan penambahan limbah cair kelapa sawit sebagai pupuk organik yang dapat memperbaiki struktur tanah dan memperkaya karbon organik dalam tanah dan meningkatkan pH tanah. Penelitian ini bertujuan untuk mencari interaksi pengaruh konsentrasi BOD (Biological Oxygen Demand) limbah cair kelapa sawit kolam anaerobik dan pupuk NPK terhadap kandungan hara N, P, K tanah, pertumbuhan serta hasil tanaman jagung manis pada tanah aluvial. Penelitian dilakukan di kebun percobaan Fakultas Pertanian Universitas Tanjungpura. Analisis kadar BOD, N, P, dan K limbah cair dilakukan di Laboratorium Kualitas dan Kesehatan Lahan Fakultas Pertanian Universitas Tanjungpura. Analisis unsur N, P, K limbah cair dilakukan di Laboratorium Kimia dan Kesuburan Tanah Fakultas Pertanian Universitas Tanjungpura. Penelitian berlangsung pada Agustus hingga Desember 2023. Metode penelitian ini adalah eksperimen lapangan dengan Rancangan Acak Lengkap dua faktorial. Faktor pertama terdiri dari tiga taraf, yaitu: N0 (0 g Urea, 0 g SP-36, dan 0 g KCl), N1 (4,5 g Urea, 3,75 g SP-36, 2,8 g KCl), N2 (9 g Urea, 7,50 g SP-36, 5,6 g KCl) dan faktor kedua terdiri dari empat taraf, yaitu: L0 (Limbah Cair Kelapa Sawit/LCKS 100%), L1 (LCKS 75%), L2 (LCKS 50%), L3 (LCKS 25%), masing-masing perlakuan diulang tiga kali sehingga didapatkan 36 sampel tanaman. Variabel yang diamati: reaksi tanah (pH H2O), C-organik, N-total, P-tersedia, K-tersedia, tinggi tanaman, diameter batang, jumlah daun, dan berat tongkol dengan klobot serta berat tongkol tanpa klobot. Hasil penelitian menunjukkan bahwa perlakuan LCKS kolam anaerobik memberikan pengaruh nyata terhadap pH tanah, K-tersedia, dan tinggi tanaman, sedangkan pada perlakuan pemberian pupuk NPK memberikan pengaruh nyata terhadap pH tanah, N-total, K-tersedia, tinggi tanaman, diameter batang, jumlah daun, dan hasil berat tongkol dengan klobot serta berat klobot tanpa klobot. Kata kunci: aluvial, jagung manis, limbah cair kelapa sawit, pupuk NPK  
EFISIENSI PEMUPUKAN NITROGEN PADA PENGGUNAAN Azospirillum sp. TERHADAP PERTUMBUHAN DAN HASIL JAGUNG MANIS PADA TANAH GAMBUT Warganda, Warganda; Maulidi, Maulidi; Listiawati, Agustina; Surachman, Surachman; Asnawati, Asnawati
Agros Journal of Agriculture Science Vol 25, No 4 (2023): edisi Oktober
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v25i4.3531

Abstract

        Continuous use of inorganic N fertilizer for a long time in high doses can cause land degradation. Land productivity will decrease if land experiences degradation. The application of Azospirillum sp is an effort to reduce the use of inorganic N fertilizer. The aim of this research is to obtain the best dose of Urea and Azospirillum sp fertilizer as an effort to efficiently use inorganic N fertilizer on the growth and yield of sweet corn on peatlands. This research used a factorial randomized block design. The first factor is Azospirillum sp which consists of 2 levels and the second factor is Urea fertilizer which consists of 5 levels and each treatment combination is repeated 3 times with 5 plant samples. Variables observed included plant height (cm), number of leaves (strands), leaf greenness (spad unit), plant dry weight (g), total leaf area (cm2), N uptake, cob weight per plot (kg), weight cobs with husks (g), weight of cobs without lobs (g), cob length (cm), cob diameter (cm) and other supporting variables. There was no interaction between inoculation of Azospirillum sp. and Urea. Inoculation of Azospirillum sp. needs to be done for the efficiency of nitrogen fertilizers. Inoculation of Azospirillum sp. The treatment dose of urea of  75 kg/ha is an efficient treatment for increasing the growth and yield of sweet corn plants in peat soil. There was no interaction between inoculation of Azospirillum sp. and Urea. Inoculation of Azospirillum sp. needs to be done for efficient use of Nitrogen fertilizer. Inoculation of Azospirillum sp. The treatment dose of urea of 75 kg/ha is an efficient treatment in increasing the growth and yield of sweet corn plants on peat soil.Key words: Azospirillum sp., peat, sweet corn, nitrogenINTISARI Penggunaan pupuk N anorganik  secara terus menerus yang berlangsung lama dalam dosis yang tinggi dapat menyebabkan lahan terdegradasi. Produktivitas lahan akan menurun jika lahan mengalami degradasi.  Aplikasi Azospirillum sp merupakan upaya untuk mengurangi penggunaan pupuk N anorganik. Tujuan dari penelitian ini untuk mendapatkan  dosis pupuk Urea dan azospirillum sp yang terbaik sebagai upaya efisiensi penggunaan pupuk N an organik pada pertumbuhan dan hasil jagung manis pada lahan gambut. Penelitian ini menggunakan Rancangan Acak Kelompok Faktorial. Faktor pertama yaitu Azospirillum sp yang terdiri dari 2 taraf dan factor kedua adalah pupuk Urea yang terdiri dari 5 taraf dan setiap kombinasi perlakuan diulang sejumlah 3 kali dengan sampel tanaman berjumlah 5 tanaman.   Variabel yang diamati antara lain tinggi tanaman (cm), jumlah daun (helai), kehijauan daun (spad unit), bobot kering tanaman (g), luas daun total (cm2), serapan N, bobot tongkol per petak (kg), bobot tongkol berkelobot (g), bobot tongkol tanpa kelobot (g), panjang tongkol (cm), diameter tongkol (cm) dan variabel penunjang lainnya. Tidak  terdapat interaksi antara inokulasi Azospirillum sp. dan Urea. Inokulasi Azospirillum sp. perlu dilakukan untuk efisiensi pupuk Nitrogen. Inokulasi Azospirillum sp. pada perlakuan dosis urea 75 kg/ha merupakan perlakuan yang efisien untuk meningkatkankan pertumbuhan dan hasil tanaman jagung manis di tanah gambut. Tidak  terdapat interaksi antara inokulasi Azospirillum sp. dan Urea. Inokulasi Azospirillum sp. perlu dilakukan untuk efisiensi penggunaan pupuk Nitrogen. Inokulasi Azospirillum sp. pada perlakuan dosis urea 75 kg/ha merupakan perlakuan yang efisien dalam meningkatkan pertumbuhan dan hasil tanaman jagung manis pada tanah gambut. Kata kunci : Azospirillum sp., gambut, jagung manis, nitrogen
PENGARUH ABU SABUT KELAPA DAN PUPUK NPK TERHADAP PERTUMBUHAN DAN HASIL TANAMAN LOBAK PUTIH PADA TANAH GAMBUT Apriani, Resti; Warganda, Warganda; Susana, Rini; Maulidi, Maulidi; Hariyanti, Agus
Agros Journal of Agriculture Science Vol 25, No 4 (2023): edisi Oktober
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v25i4.3530

Abstract

          Peat soil has low soil pH and less available macro nutrients. Application of coconut coir ash had the purpose of increasing the pH of the soil, whereas NPK fertilizer aimed to increase the availability of macro elements needed for plant growth. This research aims to obtain the best dose of coconut coir ashes and NPK fertilizer on the growth and yield of radish. This research was conducted in the Eastern Pontianak, The city of Pontianak, West Kalimantan, April -May 2023. The design used is completely Random Disign with Factorial Pattern, consists of 2 factors with 3 repetitions.The first factor is the coconut cor ash (A) with dosage treatment, which is, a1 = 109 g / poybag, a2 = 154 g/poybag, a3 = 200 g/ poybag. The second factor is a NPK fertilizer (P) with dosage treatment is, p1 = 18 g / poybag, p2 = 24 g/polybag, p3 = 30 g/polybag. Variables observation is the number of leaves, weight of fresh plants, weight of fresh bulbs, length of blub, diameter of bulb, and dry weight of plants. The results showed that the application of coconut coir ash dose of 33.33 tons/ha and NPK fertilizer dose of 300 kg/ha gave the best results on the diameter of radish tubers. Keywords: Coconut Coir Ash, NPK Fertilizer, Peat, RadishINTISARI          Tanah gambut mempunyai kendala sebagai media tumbuh lobak yaitu pH tanah yang rendah dan unsur hara makro yang kurang tersedia. Pemberian abu sabut kelapa mempunyai tujuan untuk meningkatkan pH tanah, sedangkan pupuk NPK diberikan untuk menambah ketersediaan unsur hara makro yang diperlukan tanaman untuk pertumbuhannya. Penelitian ini bertujuan untuk mendapatkan dosis abu sabut kelapa dan pupuk NPK yang terbaik untuk pertumbuhan dan hasil tanaman lobak putih pada tanah gambut. Penelitian ini dilaksanakan di Kecamatan Pontianak Timur, Kota Pontianak yang berlangsung pada April - Mei 2023. Rancangan yang digunakan adalah Rancangan Faktorial Pola Acak Lengkap (RAL) yang terdiri dari 2 faktor dengan 3 ulangan. Faktor pertama adalah abu sabut kelapa (A) dengan 3 taraf  dosis yaitu, a1 = 109 g/poybag, a2 = 154 g/poybag, a3 = 200 g/poybag. Sedangkan faktor kedua adalah dosis pupuk NPK (P) dengan perlakuan dosis yaitu, p1 = 18 g/poybag, p2 = 24 g/poybag, p3 = 30 g/polybag. Variabel Pengamatan yaitu jumlah daun, berat segar tanaman, berat segar umbi, panjang umbi, diameter umbi, dan berat kering tanaman. Hasil penelitian menunjukkan bahwa pemberian dosis abu sabut kelapa 33,33 ton/ha dan dosis pupuk NPK 300 kg/ha memberikan hasil terbaik terhadap diameter umbi tanaman lobak. Kata kunci : Abu Sabut Kelapa, Gambut , Lobak, Pupuk NPK