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PENGARUH KERAPATAN TANAMAN TERHADAP PERTUMBUHAN DAN PRODUKSI KACANG HIJAU (Phaseolus radiatus L) DI DISTRIK SEMANGGA, KABUPATEN MERAUKE Rupang,, Maya Sari; Najib, Nardy Noerman; Djaja, Irba; Sainyakit, Yuliana
MEDIAGRO Vol 19, No 3 (2023): MEDIAGRO
Publisher : Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/mediagro.v19i3.8673

Abstract

Green beans (Phaseolus radiatus L.) are one of the food ingredients that grow in tropical environments and can be found almost throughout Indonesia. However, mung bean production in Merauke Regency is suspected to have decreased due to ineffective cultivation methods. So it is necessary to test several plant densities to increase mung bean production in Merauke Regency. This study aims to determine whether plant density affects the growth and production of green beans in Semangga District, carried out from June to September. This research was carried out with experimental methods and used Group Random Design (RAK), with 5 (five) treatments and repeated 3 (three) times with density treatments of 40 cm x 30 cm, 40 cm x 25 cm, 40 cm x 20 cm, 40 cm x 15 cm and 40 cm x 10 cm. The results showed that plant density treatment significantly affected the number of flowers, number of pods, number of seeds per pod, weight of 1000 seeds, sample production, and total production. While plant density treatment has no real effect on the level of 95% confidence in plant height and number of leaves. From the results of this study, J4 treatment (40 cm x 15 cm) provided the best growth and yield of green bean production.
Soil Physical Characteristics of The Mangrove Ecosystem in Bone Bay, Palopo City Ayu, Srida Mitra; Najib, Nardy Noerman; Yumna, Yumna; Witno, Witno; Maria, Maria; Liana, Liana; Sada, Novi Herman; Pitra, Pitra
PLANTA TROPIKA Vol 11, No 2 (2023)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v11i2.16646

Abstract

The distribution of mangrove plants is influenced by various factors, including the physical characteristics of the soil. The study was conducted to determine the physical characteristics of the soil in the mangrove ecosystem in Bone Bay, Palopo City. Soil sampling was performed using the purposive sampling method in five points with three replications based on the equations of growth and density of mangrove vegetation. Physical characteristics of the soil sample, including texture, color, permeability, bulk density, and soil porosity, were analyzed in the laboratory. The results showed that the dominant soil textures were squirming and sandy loam. The dominant soil color was very dark gray. Soil permeability is high and belongs to the fast criteria, with the highest value of 20.0 cm/hour at the fourth depth point of 0-30. The highest bulk density at the fourth depth point is 31-60 cm, with a value of 0.81 gr/cm3. At the same time, the porosity of the soil is classified as a high or good criterion, with the highest value found at the third depth point of 0-30 cm with a value of 77%. In the future, soil physical characteristics data can be used as preliminary information or databases for the government to organize and preserve mangrove forests. 
The Effectiveness of Public Green Open Space Capabilities in Reducing Flooding Yumna; Witno; Najib, Nardy Noerman; Faqi, Muh
Indonesian Journal of Applied Research (IJAR) Vol. 5 No. 2 (2024): Indonesian Journal of Applied Research (IJAR)
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/ijar.v5i2.424

Abstract

The Palopo City watershed could not accommodate the high discharge of rainfall that had fallen previously. The Green Open Space (GOS) had an ecological function by absorbing rainwater. Urban green open spaces absorbed surface flow water in the past, reducing the risk of flooding. In the past, this research measured the effectiveness of three green open spaces (Islamic Center, Pancasila Field, and Salubulo Field) in reducing flooding in Palopo City. We collected data on vegetation types, infiltration capacity, and runoff discharge. Data analysis involved the analysis of infiltration capacity (F), runoff discharge (Q), and green open space effectiveness. In the three green space locations, the following vegetation types were found: Katapang (Terminalia catappa), Palm (Dypsis lutescens), Trambesi (Samanea Saman), and Grass (Cyperus rotundus). The highest total infiltration capacity in the Salubulo Field Green Space resulted in 155 m3/hour (fast category). In the past, the most significant runoff discharge's total value was GOS Pancasila Field: 713.4 mm3/minute. The study concluded that the Salubulo Field Green Space had the highest infiltration capacity (160 m3/hour) and runoff discharge (69 mm3/minute), making it the most effective in reducing flooding in Palopo City in the past. This was > 1 (effectiveness criteria achieved), and the space was dominated by vegetation (trees and grasses).