Sutarmo Iskandar
Universitas Muhammadiyah Palembang

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

Increasing Growth and Yield of Peanuts with Various Types and Dosages of Organic Fertilizer in Dry Land Marlina Marlina; Neni - Marlina; Harniatun Iswarini; Dali Dali; A. Haitami; Khodijah Khodijah; Muhammad Hendra Saputra Wijaya; Haperidah Nunihlawati; Sutarmo Iskandar; Sasua Hustati Syachroni
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol 5 No 2 (2023): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 5 No. 2 Juli 2023
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v5i2.3032

Abstract

Dry land is very potential to be developed into agricultural land, one of which is planting peanuts, although it has constraints such as low pH and low soil fertility. Efforts can be made to improve soil fertility by applying organic fertilizer. Organic fertilizers are expected to improve the soil's physical, chemical, and biological properties and provide nutrients that peanut plants need. This research aims to obtain the right organic fertilizer type and dosage to increase peanut production. This research was conducted in farmers' fields in Margo Bhakti Village, Block C unit II, Mesuji District, Ogan Komering Ilir Regency (OKI) from March to June 2021. The layout in the field used a factorial RAK design with 9 treatment combinations repeated 3 x. Type of Organic Fertilizer: cow manure organic fertilizer, chicken manure organic fertilizer, biofertilizer. Dosage of organic fertilizer: 200 kg/ha, 400 kg/ha, 600 kg/ha. The heaviest pod weight was achieved in the combination of biofertilizer treatment at the dosage of 400 kg/ha at 89.67 g/plant or 6.97 kg/plot and increased production by 109.31% when compared to cow manure organic fertilizer at the rate of 200 kg/ha.
Effectiveness of Various Fertilizers on Hybrid Corn (Zea mays L.) in Dry Land Neni Marlina; Berliana Palmasari; Ananda Yogi; Sutarmo Iskandar; Haris Kriswantoro; Yani Purwanti; Firnawati Sakalena
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 1 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 1 January 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i1.5206

Abstract

Dry land has significant potential for cultivating hybrid corn. However, its limitations include water scarcity, poor soil physical properties, and limited availability of NPK nutrients. To improve dryland conditions, organic fertilizers, inorganic fertilizers, and organic fertilizers enriched with phosphate-solubilizing bacteria can be applied. The use of organic fertilizers—such as chicken manure and empty oil palm bunches (tankos)—as well as organic fertilizers enriched with phosphate-solubilizing bacteria, can enhance soil quality by improving its physical structure (making the soil looser and more fertile) and chemically increasing nutrient availability, thereby supporting better growth and yield of hybrid corn plants. This study aimed to evaluate the effectiveness of various fertilizer types on the growth and productivity of hybrid corn cultivated on dry land. The field experiment was arranged in a randomized complete block design (RCBD) with four treatments, each replicated six times: recommended chemical fertilizers (A), chicken manure fertilizer (B), organic fertilizer enriched with phosphate-solubilizing bacteria (C), and empty oil palm bunches (tankos) fertilizer (D). The highest yield was achieved using the recommended chemical fertilizer, producing 3.42 kg per plot (13.68 tons per hectare). The second highest yield was obtained with organic fertilizer enriched with phosphate-solubilizing bacteria, yielding 2.98 kg per plot (11.92 tons per hectare). The third-highest yield came from chicken manure fertilizer, producing 2.67 kg per plot (10.68 tons per hectare), followed by tankos fertilizer at 2.2 kg per plot (8.8 tons per hectare). The novel finding of this study is that organic fertilizer enriched with phosphate-solubilizing bacteria, without the addition of inorganic fertilizers, can achieve yields comparable to those obtained with recommended chemical fertilizers. While inorganic fertilizers are effective in increasing hybrid corn yields in the short term, their long-term use may negatively impact the environment and soil fertility. Therefore, organic fertilizer enriched with Azospirillum bacteria presents a more environmentally friendly and sustainable alternative.