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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Ilmu Pertanian jurnal Ilmu Pertanian (Agricultural Science)
Siregar, Valdi Muhamad Rafiansyah
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Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance

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Humic acid enriched with urea and NPK factory by-products promoted the growth and yield of Saccharum officinarum L. Aziz, Muhammad Abdul; Fitriyah, Fauziatul; Wahyuni, Sri; Arisandy, Poppy; Fadila, Hana; Siregar, Valdi Muhamad Rafiansyah; Sulastri, Sulastri; Luktyansyah, Insyiah Meida; Priyono, Priyono; Siswanto, Siswanto
Jurnal Ilmu Pertanian Vol 9, No 1 (2024): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.83960

Abstract

Nutrient uptake efficiency in sugarcane (Saccharum officinarum L.) must be increased using organic matter to restore soil fertility, resulting in greater productivity. The humic substance is a complex organic material that is excellent for overcoming this challenge. This study aimed to determine the effect of the humic acid enriched by liquid urea by-product (PSUC) and liquid NPK by-product (PSNC) application on the growth and productivity of sugarcane. The experiment was conducted from October 2021 to September 2022 on PT RNI plantation land, Jatitujuh, Majalengka. The research was arranged in a completely randomized (CRD) using two different humic acid product prototypes (PSUC and PSNC) with two evaluation times, a screening and a semi-pilot scale. Solid humic at a dose of 15 Kg ha⁻¹ was applied by mixing it with inorganic fertilizers, while liquid humic at a total dose of 15 L ha⁻¹ was applied by foliar spray technique at 1, 2, and 3 months after planting (MAP). The results showed that applying humic acid PSUC and PSNC enhanced sugarcane shoot growth, segmented stem number, and diameter. In addition, it could consistently promote sugarcane yields on the semi-pilot scale up to 19.18% and 24.26% under humic acid PSUC and PSNC treatments, respectively. Therefore, both in the screening and semi-pilot evaluation, the solid and liquid humic acid PSUC and PSNC applied simultaneously are potential organic materials to enhance sugarcane growth and yield.
Application of humic acid supplemented with micronutrient increase rice production Siregar, Valdi Muhamad Rafiansyah; Soekarno Mismana Putra; Muhammad Abdul Aziz; Hana Fadila; Poppy Arisandy; Sri Wahyuni; Priyono; Insyiah Meida Luktyansyah; Sulastri; Rizky Nugraha; Mira Maulidina; Siswanto
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 51 No. 3 (2023): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v51i3.46904

Abstract

Fertilizer is one of the crucial inputs to maximize nutrients needed by plants, especially rice. However, insufficient ameliorant application may affect the fertilizers' effectiveness. Humic acid is believed as one of the ameliorants to improve soil conditions resulting in higher nutrient availability. The study aimed to evaluate the effect of combining humic acid and micronutrients on growth, production, and nutrient contents in rice. Three treatments were applied, i.e., control (without humic acid), humic acid, and humic acid + micronutrients. The result showed that both humic acid treatments produced the highest number of tillers, humic acid application solely stimulated the highest root length, and humic acid + micronutrients stimulated the highest plant height, and fresh and dry biomass weight. Grain weight was not affected by treatments, but humic acid + micronutrients gave a higher weight of milled grain and number of filled grains. Humic acid application solely resulted in plant biomass and grains having higher N, P, and K contents. Overall, the application of humic acid + micronutrients is recommended to increase rice production. Keywords: ameliorant; fertilizer; nutrient availability; nutrient uptake
Humic acid enriched with urea and NPK factory by-products promoted the growth and yield of Saccharum officinarum L. Aziz, Muhammad Abdul; Fitriyah, Fauziatul; Wahyuni, Sri; Arisandy, Poppy; Fadila, Hana; Siregar, Valdi Muhamad Rafiansyah; Sulastri, Sulastri; Luktyansyah, Insyiah Meida; Priyono, Priyono; Siswanto, Siswanto
Jurnal Ilmu Pertanian Vol 9, No 1 (2024): April
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.83960

Abstract

Nutrient uptake efficiency in sugarcane (Saccharum officinarum L.) must be increased using organic matter to restore soil fertility, resulting in greater productivity. The humic substance is a complex organic material that is excellent for overcoming this challenge. This study aimed to determine the effect of the humic acid enriched by liquid urea by-product (PSUC) and liquid NPK by-product (PSNC) application on the growth and productivity of sugarcane. The experiment was conducted from October 2021 to September 2022 on PT RNI plantation land, Jatitujuh, Majalengka. The research was arranged in a completely randomized (CRD) using two different humic acid product prototypes (PSUC and PSNC) with two evaluation times, a screening and a semi-pilot scale. Solid humic at a dose of 15 Kg ha⁻¹ was applied by mixing it with inorganic fertilizers, while liquid humic at a total dose of 15 L ha⁻¹ was applied by foliar spray technique at 1, 2, and 3 months after planting (MAP). The results showed that applying humic acid PSUC and PSNC enhanced sugarcane shoot growth, segmented stem number, and diameter. In addition, it could consistently promote sugarcane yields on the semi-pilot scale up to 19.18% and 24.26% under humic acid PSUC and PSNC treatments, respectively. Therefore, both in the screening and semi-pilot evaluation, the solid and liquid humic acid PSUC and PSNC applied simultaneously are potential organic materials to enhance sugarcane growth and yield.
Evaluasi Produksi Kacang Tunggak dengan Perlakuan Pemetikan Daun dan Pemupukan NPK Siregar, Valdi Muhamad Rafiansyah; Purnamawati, Heni; Trikoesoemaningtyas
Buletin Agrohorti Vol. 11 No. 3 (2023): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrob.v11i3.48554

Abstract

Kacang Tunggak (Vigna unguiculata L. Walp) merupakan tanaman Leguminosae yang bijinya dapat menjadi subsitusi bahan baku kedelai. Daunnya juga dapat dimanfaatkan sebagai sayuran. Penelitian ini bertujuan mempelajari pengaruh waktu pemetikan daun dan pemupukan NPK terhadap produksi biji kacang tunggak. Percobaan ini dilaksanakan di Kebun Percobaan Cikabayan IPB pada bulan Februari hingga Juni 2019 menggunakan kacang tunggak bertipe merambat. Rancangan percobaan yang digunakan adalah Rancangan Kelompok Lengkap Teracak (RKLT) dengan petak terpisah. Petak utama pada percobaan adalah faktor pemupukan NPK dengan dosis 100 kg ha-1 diaplikasikan pada awal tanam, 50 kg ha- 1 diaplikasikan pada awal tanam dan 50 kg ha-1 pada tanaman umur 4 MST, serta perlakuan tanpa pemupukan. Anak petak pada percobaan adalah waktu pemetikan daun dengan perlakuan pemetikan daun pada umur 5 MST, dua kali pemetikan daun pada umur 5 dan 7 MST, tiga kali pemetikan daun pada umur 5, 7, dan 9 MST, serta tanpa perlakuan pemetikan daun. Data dianalisis menggunakan Uji F dan diuji lanjut menggunakan Duncan Multiple Range Test (DMRT) pada taraf nyata α=5%. Pemupukan NPK 50-50 kg ha-1 menghasilkan hasil polong kering tertinggi sebesar 36.72 g per tanaman. Faktor waktu pemetikan daun tidak berpengaruh nyata terhadap semua peubah, kecuali pada jumlah tandan bunga tanaman umur 7 MST. Terdapat interaksi antara perlakuan pemupukan NPK dan waktu pemetikan daun terhadap total bobot polong kering dan indeks panen tanaman. Pemetikan daun dua kali pada 5 dan 7 MST dapat dilakukan tanpa mengurangi hasil polong dengan syarat adanya pemupukan NPK 50 kg ha-1 pada awal tanam dan NPK 50 kg ha-1 pada 4 MST dengan hasil sebesar 41.92 g bobot polong kering per tanaman. Kata kunci: hasil biji, konsumsi, pemupukan secara terpisah, subsitusi kedelai, waktu petik daun
Co-Authors Arisandy, Poppy Fadila, Hana Faqih Udin Fitriyah, Fauziatul Hana Fadila Insyiah Meida Luktyansyah Luktyansyah, Insyiah Meida Mira Maulidina Muhammad Abdul Aziz Muhammad Abdul Aziz Poppy Arisandy Priyono Priyono Priyono Rizky Nugraha RR. Ella Evrita Hestiandari S Siswanto Siswanto Soekarno Mismana Putra Sri Wahyuni Sri Wahyuni SULASTRI Sulastri Sulastri Trikoesoemaningtyas