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Pengaruh Pembenah Tanah Cair dan Pupuk N, P, K terhadap Pertumbuhan Serta Hasil Tanaman Bawang Merah (Allium cepa, L.) Solihin, Eso; Sudirja, Rija; Yuniarti, Anni; Kamaluddin, Nadia Nuraniya
Jurnal Ilmiah Universitas Batanghari Jambi Vol 24, No 3 (2024): Oktober
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jiubj.v24i3.5268

Abstract

This research aims to determine the effects of humic acid application on soil pH, organic carbon (C-Organic), cation exchange capacity (CEC), as well as the growth and yield of shallots. The study was conducted at the Ciparanje Experimental Garden, Faculty of Agriculture, Padjadjaran University, Jatinangor, Sumedang, from November 2023 to February 2024. The experimental method used was a Randomized Complete Block Design (RCBD) with six treatments and five replications. The treatments were: A; (0.5 Soil Amendment and 1 Standard N, P, K), B; (1 Soil Amendment and 1 Standard N, P, K), C; (1.5 Soil Amendment and 1 Standard N, P, K), E; Without Standard N, P, K and Soil Amendment (Control), and F; (Standard N, P, K). The results showed that the combination of soil amendments and N, P, and K fertilizers significantly affected the parameters of soil pH, C-Organic, CEC, and plant height at 14, 28, 42, and 56 days after planting (DAP); stem diameter at 14, 28, 42, and 56 DAP; number of tillers at 14, 28, 42, and 56 DAP; and shallot plant weight.
Silica, Soil and Paddy Plant Productivity Qurrohman, Budy Frasetya Taufik; Suriadikusumah, Abraham; Joy, Benny; Sudirja, Rija
Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian Vol. 8 No. 2 (2024): Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian, Juni
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/agr.v8i2.11261

Abstract

The element Si is a functional nutrient for rice plants. The loss of available Si from paddy fields every time of harvest is relatively high. The impact of reduced available Si content is a decrease in the efficiency of N, P, K fertilization, plant resistance to abiotic and biotic stresses. Si fertilization on paddy plants in Indonesia has not been implemented massively by farmers. Si fertilization by returning rice straw and husks to the paddy field in compost and biochar is a strategic and economical step to replenish the depleted Si reserves of paddy fields. The response of Si fertilization between one region will differ depending on the concentration of Si-available in the paddy soil. The development of the critical limit of Si available for paddy soil in Indonesia needs to be investigated further so that the critical limit of Si can be used as a standard in determining the need for Si fertilization.
Evaluasi Parameter Fisiologis Tanaman Tembakau terhadap Aplikasi Pupuk ZA dan Biochar Santi Rosniawaty; Furqan Mubarak Djula; Intan Ratna Dewi Anjarsari; Mira Ariyanti; Rija Sudirja
Berkala Ilmiah Pertanian Vol. 8 No. 4 (2025): November 2025 (in press)
Publisher : Jember University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bip.v8i4.53731

Abstract

Tembakau merupakan salah satu tanaman yang diusahakan oleh petani di Jawa Barat.  Kondisi  tanaman tembakau tergantung dari nutrisi yang diberikan selama pertumbuhannya dan proses fisiologis yang menyertainya.  Nutrisi tanaman tembakau salah satunya berasal dari pupuk ZA.  Pupuk ZA terkadang sulit ditemui dipasaran, oleh karena itu penambahan bahan organik seperti biochar diharapkan dapat mengurangi kebutuhan akan pupuk ZA. Penggunaan biochar untuk mengurangi kebutuhan pupuk ZA akan mempengaruhi kondisi fisiologis saat tanaman tumbuh. Tujuan penelitian ini adalah untuk menganalisis bagaimana respons fisiologi dan biomassa tembakau terhadap aplikasi pupuk ZA dan biochar. Percobaan dilakukan pada bulan April 2024 sampai dengan Juli 2024 di Kebun Percobaan Ciparanje, Fakultas Pertanian, Unpad.   Percobaan ini menggunakan metode eksperimen yang disusun dalam Rancangan Acak Kelompok (RAK) dengan jumlah 6 perlakuan, 4 ulangan, masing-masing perlakuan terdiri dari 3 tanaman. Adapun perlakuan yang diaplikasikan adalah kombinasi beberapa dosis pupuk ZA dan biochar. Hasil penelitian menunjukkan bahwa perlakuan 12 g pupuk ZA/tanaman + 375 g Biochar Tempurung Kelapa/tanaman secara konsisten menghasilkan respons fisiologis (indeks klorofil, kadar N daun dan biomassa) tembakau terbaik. Terdapat tendensi  perlakuan 12 g pupuk ZA/tanaman + 563 g Biochar Tempurung Kelapa terhadap peningkatan serapan S daun tembakau.
UTILIZATION OF COW DUNG AND RABBIT URINE FERTILIZER TO OPTIMIZE THE GROWTH OF LIBERICA COFFEE SEEDLINGS (Coffea liberica L.) Rosniawaty, Santi; Abdul Halim luthfi; Intan Ratna Dewi Anjarsari; Mira Ariyanti; Rija Sudirja
Agrisaintifika: Jurnal Ilmu-Ilmu Pertanian Vol. 9 No. 3 (2025): Agrisaintifika
Publisher : Universitas Veteran Bangun Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/ags.v9i3.7098

Abstract

Liberica coffee (Coffea liberica L.) has the advantage of growing on marginal land and showing resistance to pests and diseases. To support optimal growth, Liberica coffee seedlings require appropriate growing media and nutrient sources. Cow manure and rabbit urine, as organic waste, are expected to provide sufficient nutrients. This study aimed to evaluate the effect of cow manure and rabbit urine on the growth of Liberica coffee seedlings. The experiment was conducted from February to June 2023 at the Ciparanje Experimental Garden, Faculty of Agriculture, Universitas Padjadjaran, using a randomized block design (RBD) with nine treatments and three replications. Treatments consisted of (A) soil + 2 g urea, (B) soil + 25% rabbit urine, (C) soil + 50% rabbit urine, (D) soil:cow manure (1:1) + 25% rabbit urine, (E) soil:cow manure (1:1) + 50% rabbit urine, (F) soil:cow manure (2:1) + 25% rabbit urine, (G) soil:cow manure (2:1) + 50% rabbit urine, (H) soil:cow manure (3:1) + 25% rabbit urine, and (I) soil:cow manure (3:1) + 50% rabbit urine. The application of cow manure and rabbit urine increased leaf area, root length, and chlorophyll index of Liberica coffee seedlings. The best growth was achieved with the combination of soil:cow manure (3:1) and 25% rabbit urine, which also increased the levels of total N, P2O5, and K2O in the seedlings. Keywords : coffee, liberica,nutrition content, organic, seedling
Analisis N Total dan Kandungan Logam Berat Cu dan Zn pada Tanah Sawah di Daerah Pengairan Sungai Cikijing Kecamatan Rancaekek Leony Agustine; Rija Sudirja; Rachmat Harryanto
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol. 7 No. 1 (2022): April
Publisher : Fakultas Teknologi Pertanian, Universitas Udayana Gedung GA, Fakultas Teknologi Pertanian, Universitas Udayana Jl. Raya Bukit Jimbaran, Jimbaran, Kuta Selatan, Bali Telp/Fax: (0361) 701801

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITPA.2022.v01.i01.p06

Abstract

This study aims to determine: 1) evaluate the distribution of total N and the distribution of heavy metals Cu and Zn in paddy fields in the Cikijing River Irrigation Area, Rancaekek District, 2) the amount of total N and the distribution of heavy metals Cu and Zn in paddy fields in the Cikijing River Irrigation Area, Rancaekek District. The experiment was conducted in paddy fields contaminated with factory waste in the Cikijing River Watershed, Rancaekek District and followed with the analysis of the soil at the Laboratory of Soil Fertility and Plant Nutrition, Faculty of Agriculture, Padjadjaran University. The experiment was conducted in February 2017 to November 2017. The determination of sample points is based on Homogeneous Soil Map Unit (SLH), which is made by overlay map on the map of soil types, slope maps and land use maps of research areas. The number of samples is 8, which is located on the 5 villages. The variables observed and measured in this study included total N and heavy metals Cu and Zn. The results showed that the total N in the research area was low and moderate, but at some location points there was a very low N content, while heavy metal Cu at several locations was above the quality standard and heavy metal Zn was above the quality standard.
Path analysis of “new” humic acid derived from water hyacinth on phosphorus dynamics in P-deficient Inceptisols and chili response under intensive cultivation Sofyan, Emma Trinurani; Hermawan, Mega Kartika; Sudirja, Rija; Nurbaity, Anne; Fitriatin, Betty Natalie; Mulyani, Oviyanti; Setiawati, Mieke Rochimi; Djuansah, Muhamad Rahman
Journal of Degraded and Mining Lands Management Vol. 13 No. 1 (2026)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2026.131.9669

Abstract

Phosphorus (P) deficiency in intensively cultivated Inceptisols is a persistent problem, not only because of low P reserves but also because of ongoing soil degradation, which reduces fertilizer use efficiency and is characteristic of degraded soils. This study aimed to develop a “new” humic acid from water hyacinth biomass (WHL) through accelerated aerobic decomposition using lignocellulolytic microorganisms and to evaluate its effectiveness in improving soil P dynamics and chili growth responses. The experiment was conducted on P-deficient Inceptisols of the Jatinangor series characterized by low P availability and high metal content. Water hyacinth collected from local reservoirs and rivers was aerobically decomposed with selected microbial starters to enhance humification. WHL was applied in combination with inorganic P fertilizer (SP-36), and its effects on soil P availability, phosphorus dynamics, and chili pepper growth and yield were evaluated using path analysis. The results showed that WHL significantly improved P dynamics mainly through an indirect mechanism involving increased P availability and reduced P fixation, thereby improving chili growth and yield. Application of WHL at a rate of 30 kg ha?¹ combined with SP-36 at a rate of 250 kg ha?¹ produced responses comparable to those obtained with commercial humic acid. These findings indicate that WHL has strong potential as a renewable and cost-effective alternative source of humic acid to improve phosphorus efficiency, restore soil chemical function, and reduce dependence on inorganic P fertilizers in degraded Inceptisols under intensive cultivation.
PENINGKATAN P-POTENSIAL, P-TERSEDIA, SERAPAN P SERTA HASIL PADI MELALUI APLIKASI KOMBINASI PEMBENAH TANAH DAN PUPUK N, P, K PADA SAWAH INCEPTISOLS: Peningkatan P-Potensial, P-Tersedia, Serapan P Serta Hasil Padi Melalui Aplikasi Kombinasi Pembenah Tanah Dan Pupuk N, P, K Pada Sawah Inceptisols Sofyan, Emma Trinurani; Sudirja, Rija; Joy, Benny; Wicaksono, Ficky Yulianto; Chamid Itmam
Agrifarm : Jurnal Ilmu Pertanian Vol 14 No 2 (2025): Desember
Publisher : Universitas Widya Gama Mahakam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24903/ajip.v14i2.3893

Abstract

Peningkatan hasil padi diperlukan karena meningkatnya kebutuhan beras nasional, namun, produktivitas lahan masih menjadi masalah utama, terlebih maraknya degradasi kesuburan tanah dan alih fungsi lahan. Pemberian bahan organik dibarengi pupuk N, P, K dapat dilakukan untuk meningkatkan efisiensi pemupukan dan mengurangi input pupuk kimia. Tujuan percobaan adalah untuk mengetahui pengaruh sinergi kedua bahan dalam meningkatkan P-potensial, P-tersedia, serapan P, dan hasil padi serta mencari dosis terbaik yang menghasilkan gabah kering giling (GKG) tertinggi dengan pengurangan input pupuk kimia. Percobaan dilakukan pada bulan Juli-Desember 2025 di Lahan Percobaan Kimia Tanah dan Nutrisi Tanaman, Fakultas Pertanian, Universitas Padjadjaran. Rancangan Acak Kelompok (RAK) dilakukan dalam percobaan ini dengan 9 perlakuan dan 3 kali ulangan dengan rincian: Kontrol; N, P, K rekomendasi; 1 pembenah tanah; ¼ pembenah tanah + 1 dosis N, P, K; ½ pembenah tanah + 1 dosis n, p, k; ¾ pembenah tanah + 1 dosis N, P, K; 1 pembenah tanah + ½ dosis n, p, k; 1 pembenah tanah + ¾ dosis N, P, K; 1 pembenah tanah + 1 dosis N, P, K. Hasil percobaan mengindikasikan bahwa kedua bahan dapat bersinergi dan berpengaruh nyata dalam meningkatkan kadar P-potensial, P-tersedia, serapan P, serta hasil padi kecuali pada persentase gabah bernas. Dosis 8 t ha-1 kombinasi pembenah tanah dan 50% N, P, K anjuran (262,5 kg. ha-1 Urea; 37,5 kg. ha-1 SP-36; dan 37,5 kg ha-1 KCl) dapat meningkatkan hasil gabah kering giling (3,39 kg petak-1) dengan mengurangi input pupuk kimia sebesar 50%.
Pengaruh aplikasi silika terhadap produktivitas tanaman padi pada tanah sawah dengan status silika berbeda Frasetya, Budy; Suriadikusumah, Abraham; Joy, Benny; Sudirja, Rija
Jurnal AGRO Vol. 12 No. 2 (2025)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/j.agro.49997

Abstract

Tanaman padi (Oryza sativa L.) merupakan komoditas strategis dalam menjaga ketahanan pangan nasional. Berbagai upaya dilakukan agar hasil panen tanaman padi terus meningkat. Aplikasi silika (Si) pada tanaman padi masih jarang dilakukan oleh petani sebagai upaya untuk meningkatkan produktivitas tanaman padi. Penelitian ini bertujuan untuk menentukan konsentrasi terbaik aplikasi Si pada setiap status Si tanah sawah terhadap produktivitas tanaman padi. Penelitian ini menggunakan metode eksperimental dengan Rancangan Acak Lengkap (RAL) dengan ulangan tidak sama. Terdiri dari sembilan perlakuan yang merupakan kombinasi antara status Si tersedia (rendah, sedang dan tinggi) dan aplikasi Si (tanpa pemupukan, ekstrak silika sekam padi 20 dan 40 mL L-1. Variabel penelitian yang diamati yaitu jumlah malai umur 84 dan 98 hari setelah tanam, berat kering biomassa jerami, berat gabah per 1000 butir, berat gabah per rumpun dan berat gabah konversi per hektar. Hasil penelitian menunjukkan bahwa konsentrasi optimum aplikasi Si berbeda-beda bergantung pada status Si dalam tanah. Level optimum aplikasi Si diperoleh konsentrasi 11 dan 28 mL L-1 untuk Si tersedia sedang dan tinggi. ABSTRACT Rice is a strategic commodity for maintaining national food security. Various efforts are being made to increase rice yields. Application of silica (Si) on rice plants is still rarely carried out by farmers as an effort to increase rice productivity. This study aims to determine the optimal concentration of Si application at each Si status of paddy soil for rice plant productivity. The method used in this study is an experimental method using a completely randomized design with unequal replications. Consisting of nine treatments, a combination of available Si status (low, medium and high) and Si application (no fertilization, rice husk silica extract 20 and 40 mL L-1). The research parameters observed were the number of panicles at 84 and 98 days after planting, dry weight of straw biomass, grain weight per 1000 grains, grain weight per clump and converted grain weight per hectare. The results indicated that the optimal Si application concentration varied according to the soil Si status. The optimum Si application was at concentration of 11 mL L-1 of 28 mL L-1 in paddy soil with a medium and high available Si status, respectively.
PENGARUH KOMBINASI FOSFAT ALAM DENGAN PUPUK NITROGEN DAN KALIUM TERHADAP PERTUMBUHAN DAN HASIL TANAMAN JAGUNG (Zea mays L) Solihin, Eso; Sudirja, Rija; Liana Sari, Stefina; Yuniarti, Anni
JURNAL AGRO NUSANTARA Vol. 5 No. 2 (2025): JURNAL AGRONUSANTARA
Publisher : Fakultas Pertanian Universitas Muslim Nusantara Al Washliyah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32696/jan.v5i2.5018

Abstract

Phosphorus is one of the essential macronutrients that plays a crucial role in the growth and productivity of maize (Zea mays L.). The use of natural phosphate as an alternative phosphorus source, when combined with nitrogen (urea) and potassium (KCl) fertilizers, has the potential to enhance crop yield. This study aimed to evaluate the effect and determine the optimal dosage of natural phosphate in combination with urea and KCl on the growth and yield of maize. The experiment was conducted from February to May 2025 using a Randomized Complete Block Design (RCBD) with the following treatments: A (control), B (single NPK), C; (1/4 P) + NK, D; (1/2 P) + NK, E; (3/4 P) + NK, F; (1 P) + NK, G; (1 1/4 P) + NK, H; (1 1/2 P) + NK, I; (1 3/4 P) + NK dan J; (2 P) + NK. The results showed that the combination of natural phosphate with urea and KCl had a significant effect on all growth parameters and corn yields. The highest results were obtained by providing 225 kg/ha of natural phosphate, 300 kg/ha of urea, and 150 kg/ha of KCl, with a corn yield of 16.04 tons/ha.
Peningkatan Ketersediaan Fosfor Tanah dan Tanaman serta Hasil Padi Sawah pada Inceptisols asal Jatinangor Melalui Aplikasi Pembenah Tanah dan Pemupukan Sofyan, Emma Trinurani; Sudirja, Rija; Setiawan, Ade; Puspasari, Lindung Tri; Zahra, Siti Revita
Soilrens Vol 23, No 2 (2025)
Publisher : Dept Ilmu Tanah & Sumberdaya Lahan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v23i2.69740

Abstract

Inceptisols is a soil order that usually low in organic matter and nutrient content. This condition resulted to dominantly sub optimal soil that is required to be amended prior cultivation process.Inceptisols properties can be enhanced through the addition of organic matter such as water hyacinthcompost, straw biochar, humic acid, and guano. Besides organic matter, the integration of NPKfertilizer can improve the chemical and physical characteristics of the soil, nutrient availability, andoptimize rice productivity in Inceptisols. This experiment aimed to identify the optimal dosage of soilamendments in combination with N, P, and K fertilizers to maximize phosphorus availability in the soiland plants, as well as rice yields in Inceptisols. This experiment took place from September 2025 toJanuary 2026 at the Soil Chemistry and Plant Nutrition Laboratory Experimental Garden, Faculty ofAgriculture, Universitas Padjadjaran, Jatinangor, Sumedang. The experiment used a RandomizedComplete Block Design with six treatments and four replications, that is: control; recommended N, P,K; soil amendment; ½ soil amendment + ¾ dose of N, P, K; 1 soil amendments + ½ dose of N, P, K; 1 ½soil amendment + ¼ dose of N, P, K. One dose of soil amendment used was 8000 kg ha-1, while one doseof N, P, K fertilizer was 350 kg ha-1 Urea, 50 kg ha-1 SP-36, and 50 kg ha-1 KCl. The results of theexperiment showed that the dose of 1 soil amendment + ½ dose of N, P, K yielded a percentage of grainper panicle of up to 94.75% and provided the highest available P and P uptake by plants.
Co-Authors Abdul Halim luthfi Abraham Suriadikusumah Ade Ismail Ade Setiawan Ade Setiawan Ade Setiawan Agung Karuniawan Agus Susanto Agus Wahyudin Ainun Fadilah Al- Adawiah, Alin Robial Alin Robial Al- Adawiah Andre R. Daud Anne Nurbaity Anni Yuniarti Apong Sandrawati Asep Anang Asmi Maulina Bahjatien, Isnaini Dzatie Benny Joy Benny Joy Benny Joy Benny Joy Benny Joy Benny Joy Betty Natalie Fitriatin Budi Nugroho Budy Frasetya Taufik Qurrohman Chamid Itmam Citra Bakti, Citra Cucu Suherman Daud Siliwangi Saribun Dedi Ruswandi Desvia Diyanti Nursyabani Dimas Nur Annisa Dimas Nur Annisa Istiqomah Dirga Sapta Sara Diyan Herdiyantoro Djuansah, Muhamad Rahman Djuwansah, Muhamad Rachman Elisabeth Mora Emma Trinurani Emma Trinurani Sofyan Encep Hidayat Salim Erika Wahyuni Saragih Erna Dewi Erna Dewi . Erni Suminar Eso Solihin Eso Solihin Fadhilah, Rifat Ferdy Firmansyah Furqan Mubarak Djula Ganjar Herdiansyah Ganjar Herdiansyah, Ganjar H. Afrianto H. Afrianto, H. Haris Maulana Hendi Hidayat Hendi Hidayat, Hendi Hermawan, Mega Kartika Husein, Anne Yuliana Iin Susilawati Indra Permana Intan Ratna Dewi Anjarsari Islamy Hasan Hermawan Johar Arifin Leony Agustine Leony Agustine Liana Sari, Stefina Lindung Tri Puspasari Lubis, Ary Satria M. Arief Sholeh Mahfud Arifin Masruri, Muhammad Kholil Maulana, Haris Maya Damayani Maya Damayani Maya Damayani Meddy Rachmadi Mieke Rochimi Setiawati Mira Ariyanti Mochamad Arief Sholeh Mochamad Arief Soleh Mubarok, Zakka Tafwidh Muhammad Farghan Fauzan Nadia N. Kamaluddin Nadia Nuraniya Kamaluddin Oviyanti Mulyani Pudjawati Suryatmana Pujawati Suryatmana Purwono Purwono, Purwono Rachmad Akbar Rachmat Harryanto Rachmat Harryanto Rachmat Haryanto Rachmat Haryanto, Rachmat Rani Ros Reginawanti Hindersah Rhazista Noviardi Rhendika Indra Yunianto Rina Devnita Rizky Febria RR Darlita RR Darlita Rudianto, Safira Damayanti Salsabila Dwi Ananda Sandrawati, Apong Santi Rosniawaty Santoso, Dwi Andreas Sari, Stefina Liana Sri Muji Rahayu Stefina Liana Sari Suryatma, Pujawati Suryo Firnato Syaiful Anwar Syariful Mubarok Syfani Fitria Syfani Fitria Tualar Simarmata Vera Oktavia Subardja Vera Oktavia Subarja Wawan Sutari Wicaksono, Ficky Yulianto Wulan Sri Damayanti Yulianti Machfud Yuliati Machfud Yusup Hidayat Zahra, Siti Revita