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All Journal JTCST (Journal of Tropical Crop Science and Technology)
Ali Ikhwan
Universitas Muhammdiyah Malang
Agriculture, Biological Sciences & Forestry

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Effectiveness Of Combination Application Of Grinting Grass (Cynodon Dactylon) Extract And Tumb Of Gadung (Dioscorea Hispida Dennst) Plant As An Attempt To Suppress The Intensity Of Mosaik Virus Vector Pest (Aphis Glycine) In Soybean (Glycine Max L.) Plants Fahmi Faishal Malik; Ali Ikhwan; Erfan Dani Septia
Journal of Tropical Crop Science and Technology Vol. 4 No. 1 (2022): VOLUME 4, NO. 1, MARCH 2022
Publisher : Universitas Muhammadiyah Malang

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Abstract

A. glycine soybean infestation caused yield loss reaching 58%. Environmental friendly controls are carried out using natural ingredients. This study was conducted to determine the effectiveness of the combination of gadung and grass grinting tuber extracts on soybean virus (A. glycine) vector pests and to know the mechanism of toxicity to these pests. This research was conducted from June to September 2018. The effectiveness of applications using simple Randomized Completed Block Design (RCBD). Analysis of Varian at 5% level, and Duncan's Multiple Range Test (DMRT) test. Calculations of LC50 and LT50 use probit regression analysis. The results showed that the highest compounds contained in gadung tubers were alkaloids, whereas in grinting grasses were saponins. Both of these compounds have the potential as a base for vegetable insecticides. The combination treatment of gadung extract and grinting 3: 2 (v / v) (P7) and 3: 1 (P8) showed the most effective results compared to positive controls and other treatments with mortality mean values ​​at all observations of 87.44% and 86, 7%. The LC50 value of gadung extract at the first observation was 3%, the grinting extract was 3.08%. The lowest LT50 value is in treatment P7 (3: 2) with a time of 3.88 hours. a combination of gadung extract and grinting can suppress A.glycine infestation and potentially a plant-based insecticide
Growth Response Of Mustard Green (Brassica juncea L.) Because Of Giving Cow Compost And Mikoriza Fertilizer Dosages Sati Fatimah; Ali Ikhwan; Muhidin; machmudi; Erny Ishartati
Journal of Tropical Crop Science and Technology Vol. 6 No. 1 (2024): VOLUME 6, NO. 1, MARCH 2024
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jtcst.v6i1.32894

Abstract

Mustard green (Brassica juncea L.) is leafy vegetable with subtropical climate, but this plant is able to adapt well on tropical climate that it suitable to be planted and growth in Indonesia. Formulation of problem in this study is to lessen the use of chemistry fertilizer in fertilization on plant especially mustard green (Brassica juncea L.). This study is aimed to review growth response of mustard green (Brassica juncea L.) because giving dosage of cow compost and mikoriza fertilizer dosages. This study used randomized block design (RAK) arranged in split plot with 2 factors. The first factor as main block of cow compost dosage consists of three level, they are 2,5 ton/ha, 5 ton/ha and 10 ton/ha. The second factor is offspring block, it is mikoriza dosage that consists of three levels, they are 1 tablet/plant, 2 tablets/plant and 3 tablet/plant for each is repeated 3 times. Observed variables are plant height, the number of leaves, leaf wide, fresh weight and dried weight of plant, fresh and dried weight, fresh and dried ratio of root weight and dried crown weight. The result of this study shows that there is no interaction between giving cow compost and mikoriza dosage toward mustard green height, fresh weight and dried weight, fresh and dried ratio of root weight and dried crown weight, but separately dosing cow manure 2.5 ton/ha can increase broad leaf mustard plants at 2 weeks after planting and dosage as well as mikoriza 1 tablet/plants and 2 tablets/plant has been able to increase leaf area from age 2 weeks after planting.
Co-Authors Erfan Dani Septia Erny Ishartati Fahmi Faishal Malik machmudi Muhidin Sati Fatimah