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

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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
Correlation of Soil Environmental to Diversity the Entomopathogenic Fungi Rose Novita Sari Handoko; Aminudin Afandhi; Amin Setyo Leksono
Indonesian Journal of Environment and Sustainable Development Vol 8, No 1 (2017)
Publisher : Graduate Program

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Abstract

Ecosystem rice fields that have high diversity, able to control the pest. Habitat entomopathogenic fungi in the soil have been examined on cabbage plants but has not been reported in the rice field. The study was conducted through surveys of crops and paddy fields by the application of IPM in Kasembon Malang. A total of 5 points soil samples were determined diagonally used in this study. Isolation of entomopathogenic fungi from the rhizosphere of paddy is done by plate dilution method. Entomopathogenic fungi were identified to genus level by observing the macroscopic and microscopic characteristics. Koch's postulates done on Tenebrio molitor, then observe the symptoms and mortality of Spodoptera litura time pathogenicity test. The results showed that the genus of entomopathogenic fungi in the rhizosphere of rice is Penicillium sp., Aspergillus sp. and has not been identified. Chemical analysis of soil for pH is 4.00 to 5.00. Soil organic matter is 1.89% to 3.20%. Keywords: diversity, entomopathogenic fungi, integrated pest management, rhizosphere
Hubungan Lingkungan Tanah Dengan Virulensi Jamur Entomopatogen Pada Tanaman Padi Rose Novita Sari Handoko; Aminudin Afandhi; Amin Setyo Leksono; Mufidah Afiyanti
Folium : Jurnal Ilmu Pertanian Vol 6, No 1 (2022): Folium : Jurnal Ilmu Pertanian
Publisher : Universitas Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/folium.v6i1.15407

Abstract

High ecosystem diversity can control pest populations. Rice is a staple food that continues to be researched for interesting things. Indonesia is ranked 3rd for production at the international level. The research was conducted through a survey of plants and paddy fields with conventional application in Kasembon Malang. Standard chemical fertilizer and pesticide application were used in this field. A total of 5 diagonally determined soil sample points were used in this study. The dilution method was carried out for the analysis of entomopathogenic fungi which were then tested using the Koch’s Postulate method on Tenebrio molitor, then observed the symptoms and mortality of Spodoptera litura during the pathogenicity test. 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.