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Journal : Jurnal Pembangunan dan Alam Lestari

GA3 and NPK Fertilization Applications Affect Phalaenopsis amabilis L. orchid for Plant Growth Sunawan Sunawan; Rose Novita Sari Handoko; Istiqomah Rusdiana Rahayu; Aminudin Afandhi
Indonesian Journal of Environment and Sustainable Development Vol. 11 No. 1 (2020)
Publisher : Postgraduate School Universitas Brawijaya

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Abstract

Application of GA3 and NPK fertilizers is already known to promote growth of plants. Potential effects of GA3 and NPK on the growth of Phalaenopsis ambilis L. orchid were investigated in the present study. However, increasing application GA3 concentrations of 0, 1, 2, 3, 4, 5 ppm/plant and NPK concentrations of 0, 1, 2, 3, 4 gram/plant. The observation started 30, 45, 60, 75, 90 days after application. This research was use the concentration of GA3 and NPK separately (without combination), each treatment showed a significant effect on the number of leaves, stem diameter, leaf area and leaf area index and had no significant effect to plant height variables. Treatment of GA3 (3 ppm / plant) showed positive results on the variable number of leaves, leaf area and leaf area index. Increasing the concentration of GA3 to 5 ppm / plant did not show any significant difference with the treatment of GA3 concentration of 3 ppm / plant. This shows that plants are needed in small amounts. The dose of fertilizer 1 g / plant showed positive results on the variable number of leaves and stem diameter, while for the leaf area variable and leaf area index required higher NPK fertilizer osis ie 2 g / plant. The increase of NPK fertilizer dosage up to 4 g / plant was not significantly different from treatment 1 and 2 g / plant.Keywords: Phalaenopsis ambilis L., GA3, NPK, Growth
Pesticides and Chemical Fertilizer are not Negatively Impact the Diversity of Entomopathogenic Fungi on Rice Plant in Malang Indonesia Rose Novita Sari Handoko; Aminudin Afandhi; Amin Setyo Leksono; Mufidah Afiyanti; Tri Suyono
Indonesian Journal of Environment and Sustainable Development Vol. 13 No. 1 (2022): Jurnal Pembangunan dan Alam Lestari
Publisher : Postgraduate School Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpal.2022.013.01.01

Abstract

The conventional system of rice plantation has been applied in Malang, Indonesia. Standard chemical fertilizer and pesticide application were used in this field. Soil samples in rhizosphere of rice plantation showed the existence of several entomopathogenic fungi including Penicillium sp, Aspergillus sp, Trichoderma sp and some unidentified fungi. The diversity value also demonstrated a medium diversity. We conclude that an application of pesticides and chemical fertilizer according to recommended practices, are not negatively affect the diversity of entomopathogenic fungi. Aspergillus sp and Penicilium sp can cause death against Spodoptera litura.
Analysis of Groundwater Flow on Hydrogeological for Sustainable Development and Environment in the Ternate Basin, North Maluku Province, Indonesia Kadri Daud; Henny Pramoedyo; Aminudin Afandhi; Ishardita Pambudi Tama
Indonesian Journal of Environment and Sustainable Development Vol. 13 No. 1 (2022): Jurnal Pembangunan dan Alam Lestari
Publisher : Postgraduate School Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpal.2022.013.01.02

Abstract

The sustainability of water and sanitation management is an important point in the 2021 SDGs program. To support the program, it is important to understand Indonesia's water cycle. Given the variety of characters, topography, and geology between islands in Indonesia can distinguish hydrogeological systems and their interactions with the surrounding environment. The design and management of water resources, especially groundwater, has an important role, considering the basin area is 106 km2, the character of a volcanic island with the name of an active volcano. Topography from 0-8% is a built-up zone, 8-14% is a cultivation zone, 14-45% is a protected forest, and >45% is a stratovolcano peak zone. Island morphology affects groundwater flow patterns. This study aimed to determine the characteristics of groundwater flow in the Ternate basin. Purposive sampling of 56 production wells, transmissivity value, conductivity, aquifer thickness, and topography was analyzed using the Cubic spline interpolation method. The results showed that the direction of flow and groundwater accumulation based on groundwater modeling using the kriging interpolation technique resulted in the interaction of groundwater flow and depression cones in 56 production wells due to the concentration and massive groundwater abstraction in the Ternate Basin. The decrease in groundwater level is fluctuating, from groundwater flows that occur radially-centrifugally, the total reserves of 56 production wells are 46 million m3/day, the average transmissivity value is 2.17 m2/day, production discharge is 51,710 m3/day.