Article Per Year (5 Year)
p-Index From 2020 - 2025
0.61
P-Index
This Author published in this journals
All Journal Jurnal Ilmu-Ilmu Pertanian Indonesia TERRA : Journal of Land Restoration
Prasetyo Prasetyo
University of Bengkulu
Agriculture, Biological Sciences & Forestry

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search

 1 
PERTUMBUHAN BIBIT KELAPA SAWIT DI PRE-NURSERY DENGAN KOMPOSISI MEDIA TANAM DAN KONSENTRASI PUPUK CAIR Azolla pinnata BERBEDA Filsafat Waruwu; Bilman Wilman Simanihuruk; Prasetyo Prasetyo; Hermansyah Hermansyah
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 20, No 1 (2018)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.20.1.7-12

Abstract

[GROWTH OF OIL PALM SEEDLINGS IN PRE-NURSERY UNDER DIFFERENT MEDIA COMPOSITIONS AND CONCENTRATIONS OF Azolla pinnata LIQUID FERTILIZER].  Vigourous seedling is prerequisite to successful  production of oil palm.  Aside from the genetic quality of the planting material, supply of nutrients during early growth of the seedling play an important role in determinting the overall seedling performances. This study was performed to determine the best combination of media composition and concentration of liquid fertilizer made of Azolla pinnata for oil palm seedling growth during pre-nursery. A factorial arrangement of the treatments involving growing media consisted of different composition of oil palm empty fruit bunches compost and soil (1: 1, 1: 2, and 2: 1 v/v)  and different concentration of Azolla pinnata liquid fertilizer applications (0, 20, 40, and 60 mL/L) were arranged in a randomized complete block design with three replications. Data were collected for leaf number, stem diameter, seedling  height, and leaf greenness at 30, 60, and 90 days after sowing (DAS). A significant interaction effect between the treatments was observed on leaf number at 60 and 90 DAS. A further regression analysis revealed that the highest number of leaves (4.3 at 60 DAS and 6.9 at 90 DAS) were attained on the media composition of 1:1 with liquid fertilizer application at  37.5 and 56 mL/L, respectively. Seedling  height and stem diameter at 90 DAP showed quadratic responses to the increasing concentration of the liquid fertilizer applications. The maximum seedling height (26.22 cm) was attained  at  the liquid fertilizer concentrations of 36.21 mL/L. Similarly, the maximum stem diameter (7.43 mm) was attained at the concentration of 51.00 ml/L. The leaf greeneess at 60 DAS was increased in a linear fashion with the increasing concentration of the liquid fertilizer.
Growth and Yield Component of Two Varieties of Soybeans (Glycine max L. Merril) in Some Types of Amelioration in Ultisol Siska Indriani; Dotti Suryati; Hesti Pujiwati; Prasetyo Prasetyo; Entang Inoriah Sukarjo
TERRA : Journal of Land Restoration Vol 4, No 1 (2021)
Publisher : Department of Soil Science, Faculty of Agriculture, University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.4.1.9-16

Abstract

Soybeans are the third most important commodity after rice and corn. Soybeans are also a commodity rich in protein. Soy serves as a very important source of vegetable protein to improve people's nutrition because in addition to being safe for health is also relatively cheap compared to animal protein sources. Ultisol has a wide distribution but has constraints to be used as a medium of cultivation plants. The addition of some types of ameliorating or soil reformers such as chicken manure, cow manure, and composting oil palm bunches (OPB) is expected to overcome ultisol fertility. The purpose of this study was to compare the influence of varieties on the growth and component of soybean crop yields in Ultisol, compare the influence of ameliorating type on the growth and component of soybean crop yields in Ultisol, and get the interaction between the type of varieties with the type of amelioration to the growth and components of soybean crop yields in Ultisol. The research was conducted from February to May 2019 in the experimental garden of Integrated Agricultural Zone of the Faculty of Agriculture UNIB Medan Baru, Bengkulu City. This study used a Complete Randomized Design (CRD) that was compiled factorially with 3 times. The first factor is the variety type Anjasmoro and Gepak Kuning, the second factor of amelioration type is control (without amelioration), chicken manure 15 tons ha-1, cow manure 15 tons ha-1, husks burn 15 tons ha-1, and compost oil palm bunches (OPB) 15 tons ha-1. The results showed that the Gepak Kuning variety showed better growth than the Anjasmoro variety while the Anjasmoro variety showed better results than the Gepak Kuning variety. Chicken manure is the best type of amelioration compared to cow manure, rice husks, and compost OPB against the growth and component of soybean yields in Ultisol, and there is interaction in the Gepak Kuning variety with chicken manure amelioration and compost OPB. 
Land Evaluation for Oil Palm Plantation on Peat Soil in Pondok Kelapa District, Midle Bengkulu Regency of Bengkulu Province Alex Chandra Situmeang; Kanang Setyo Hindarto; Prasetyo Prasetyo
TERRA : Journal of Land Restoration Vol 2, No 1 (2019)
Publisher : Department of Soil Science, Faculty of Agriculture, University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.2.1.30-35

Abstract

The development of oil palm plantations in Indonesia as a commodity crop has increased rapidly from year to year. The oil palm plant in Pondok Kelapa District, Middle Bengkulu Regency is the second-largest plantation of people after oil palm. Increasing the income and welfare of farmers can also be done through the evaluation of peatland custom in oil palm crops. This study aims to evaluate the suitability and analyze peatland limiting factors for oil palm plants in Pondok Kelapa District and provide peatland processing direction based on limiting factors to produce palm oil production in Pondok Kelapa District. This research was conducted in Pondok Kelapa Bengkulu Tengah Regency from December 2014 until January 2015 through 4 stages, namely pre-survey, field survey, data analysis, and making a map of the potential development of oil palm plantations. The results showed that each observation point has a low to moderate soil fertility rate It is characterized by low pH and N total values, as well as low P2O5 in providing nutrients for oil palm plants. In general, limiting factors are the dominant limiting factors, namely available nutrients (P2O5, N total) and nutrient retention (pH). The results of land suitability evaluation in Pondok Kelapa District showed the land suitability class is S2 and S3, actual land suitability class for oil palm plants in Pondok Kelapa District with barrier factors hampered drainage, fertility/low soil nutrients, and soil drainage is very hampered/very bad. Efforts to increase peatland potential for oil palm crops can be done by improving drainage, planting systems, and high maintenance of groundwater levels in oil palm plants. 
Effect of Humic Acid on Nutrient Availability and Yield of Upland Rice Inoculated with Biofertilizers in the Coastal Area Tika Indriani; Yudhy Harini Bertham; Hasanudin Hasanudin; Prasetyo Prasetyo; Bilman Wilman Simanihuruk
TERRA : Journal of Land Restoration Vol 5, No 1 (2022)
Publisher : Department of Soil Science, Faculty of Agriculture, University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.5.1.15-20

Abstract

This study aims to determine the effect of humic acid on nutrient availability and upland rice production in coastal land. The research was carried out in June - November 2020 in the Beringin Raya Village, Muara Bangkahulu District, Bengkulu City. This study used a completely randomized block design with 2 factors. The first factor was the local Bengkulu upland rice variety, namely the Red upland rice variety and the White upland rice variety, while the second factor was the type of fertilizer, namely control (basic fertilizer only), humic acid, and fertilizer recommended for upland rice from BPTP (200 kg Urea ha-1, 100 kg SP36 ha-1, 100 kg KCl ha-1). The results showed that the administration of humic acid in both the White and Red varieties resulted in the best KCl pH. And if you look at the yield per plot, the upland rice of the Red variety is better when given humic acid, which has an increase of 7.4% g/plot, while the White variety has better results when given the recommended inorganic fertilizer, which is an increase of 12% g/plot. The Red variety had a higher soil pH, but had a number of pithy grains per panicle, and a lower grain content percentage than the White variety. The application of humic acid resulted in better KCl, CEC, and N-total pH, but had plant height, number of pithy grains per panicle, and yields per plot that were almost the same as recommended inorganic fertilizers.
Aggregate Stability and Soil Moisture Improvements Influenced by Chicken Manure Applied on Ultisol and Cabbage (Brassica oleraceae L.) Growth Candra Ardian; Bambang Gonggo Murcitro; Marwanto Marwanto; Hesti Pujiwati; Prasetyo Prasetyo
TERRA : Journal of Land Restoration Vol. 5 No. 2 (2022)
Publisher : Department of Soil Science, Faculty of Agriculture, University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.5.2.45-51

Abstract

Cultivation problems on marginal Ultisol involved low soil organic matter content, low water holding capacity and low soil aggregate stability. These constraints determined cabbage growth because of root crop development limited and plant nutrient uptake inhibited. Application of chicken manure could overcome the marginal constraints through improving soil aggregate stability and soil moisture content on the marginal Ultisol as well as the cabbage growth increased. The purpose of this study was to evaluate the soil aggregate stability and soil moisture in Ultisol as affected by the chicken manure applied and the cabbage growth improvement. This study was conducted from December to February, 2021 at Agriculture Station, Faculty of Agriculture, University of Bengkulu lying on ±100 m above sea level. The experiment design used was Completely Random Block Design (CRBD) with the chicken manure applied involved 5 doses; 7.5 tons ha-1, 15 tons ha-1, 22,5 tons ha-1, 30 tons ha-1, and without the manure as a control treatment. From the variance analysis (ANAVA) in the level of 5%, the chicken manure applied was significantly influence the improvement of soil aggregate stability and soil moisture content as well as the cabbage growth. With Duncan Multiple Range Test (DMRT), the dose of 7.5 tons ha-1 gave the highest value of the soil aggregate and soil moisture improvement. Furthermore, the chicken manure application of 7.5 tons ha-1 improved significantly the cabbage stem diameter at the age of 15 days, 30 days, and 45 DAP. The 7.5 tons ha-1 manure applied also gave significantly a number of leaves at the age of 15 days and 30 DAP. The height of plant was significantly influenced when the cabbage growth 15 DAP with 15 tons ha-1. In short, the chicken manure applied with 7.5 tons ha-1 gave the soil aggregate stability, the soil moisture, and cabbage growth improvement.
Co-Authors Bambang Gonggo Murcitro Bilman Wilman Simanihuruk Candra Ardian Dotti Suryati Entang Inoriah Sukarjo Filsafat Waruwu Hasanudin Hasanudin Hermansyah Hermansyah Hesti Pujiwati Kanang Setyo Hindarto Marwanto Marwanto Siska Indriani Situmeang, Chandra Tika Indriani Yudhy Harini Bertham