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All Journal Agrikultura Cropsaver : Journal of Plant Protection Soil REns
Vira Kusuma Dewi
Centre For Product Development And Partnership Study (Puspromit), Department Of Plant Pests And Diseases, Agriculture Faculty, Universitas Padjadjaran, Tanjung Sari, West Java, Indonesia, 45363
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Journal : Cropsaver : Journal of Plant Protection

 1 
Toxicity of Neem Cake Extract (Azadirachta indica) to Aphis glycine on Soybean Plant Ratmaneli Ratmaneli; Danar Dono; Vira Kusuma Dewi
CROPSAVER Vol 2, No 1 (2019)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (555.865 KB) | DOI: 10.24198/cropsaver.v2i1.22722

Abstract

Aphis glycine is one of the soybean pests that can develop rapidly and cause yield loss. Neem is a plant known as botanical incesticide. This study tested the toxicity of neem cake against A. glycine and its effect on increasing tannin content in the soybean plant. The effect of neem cake extract to the mortality of A. glycine was tested by spray method and root dipping method. The application was carried out on four-week-old soybean plants with 10 individual of adult A. glycine as test insects.  Observations were carried out every day for 8 DAT (day after treatmen) by counting the population of A. glycine. The testing of tannin levels and azadirachtin content  is done by applying neem cake extract using root dipping method. The treatment is divided into two groups, which are infested plants and non-invested plants by A. glycine. The leaf of soybean (fourth day after application) was taken as samples for tannin and azadirachtin analysis. The results showed that the extract of neem cake at the spray method caused the death of A. glycine up to 97% at a concentration 2.5%. The root dipping method could make mortality of nymphs (new born) 100% at concentrations of 0.1% and 0.125% at 8 DAT , but cannot make mortality to adult of A. glycine. The tannin content in soybean plants (with A. glycine and without A. glycine invested) was increased after 0.125% neem cake application. Azdirachtin uptake was not detected at concentrations of 0.125% and 0.250% at 5 DAT. Neem cake extract can suppress A. glycine population in soybean plants and increase of tannin content in plants. 
Density, Distribution and Population Structure of Apple Golden Snail (Pomacea canaliculata L.) in Organic and Conventional Paddy field Ecosystems Vira Kusuma Dewi; Brinadia Solihati; Wawan kurniawan; Ceppy Nasahi; Nur Fitrianti
CROPSAVER Vol 4, No 2 (2021)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v4i2.37560

Abstract

Golden snail is one of the important pests that attack paddy crops. The structure of golden snail is divided into 3 based on the size of the shell diameter, namely juveniles (0.5-1 cm), preadults (1-2.5 cm), and adults (2.5-4 cm). The paddy cultivation system can affect the golden snail population. The purpose of this study was to determine the density, distribution and population structure of the golden snail (Pomacea canaliculata L.) with case studies in Cicalengka (conventional field) and Ciparay (organic field), District of Bandung, from October 2020-January 2021. This research used survey method with sampling technique in purposive sampling.  At each location divided into 5 fields with sized 10x5 m which were divided into 7 quadrant plots. Sampling was carried out at the age of paddy crops 14,21,28, and 35 days after planting. The observerd parameters were density, distribution pattern using the Index of Morisita (Id) and population structure of P. canaliculata. The results showed that the density of P. canaliculata in organic field was higher than in conventional field. The average population structure of pre-adult golden snails in organic and conventional rice fields was significantly different at 14-35 days after planting (DAP) and adult golden snails at 14, 28, and 35 DAP. Distribution pattern of P. canaliculata in organic and conventional were grouped.
Cases of Fall Army Worm Spodoptera frugiperda J. E. Smith (Lepidoptera: Noctuidae) Attack on Maize in Bandung, Garut and Sumedang District, West Java. Yani Maharani; Vira Kusuma Dewi; Lindung Tri Puspasari; Lilian Rizkie; Yusup Hidayat; Danar Dono
CROPSAVER Vol 2, No 1 (2019)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (925.498 KB) | DOI: 10.24198/cropsaver.v2i1.23013

Abstract

Co-Authors Agus Susanto Ai Siti Santriyani Bari, Ichsan Nurul Benito Heru Purwanto Brinadia Solihati Ceppy Nasahi Danar Dono Danar Dono Dwi Harya Yudistira Fitri Widiantini Lilian Rizkie Lilian Rizkie Lindung Tri Puspasari Nugroho Susetya Putra Nur Fitrianti Octaviani . Ratmaneli Ratmaneli Reginawanti Hindersah Reynaldi Reynaldi Reynaldi Yunior Rika Meliansyah Rizky Fauzi Rizky Fauzi Rizky Ramdhani Santika Sari Santika Sari Siska Rasiska Sri Hartati Tarkus Suganda Tiara Febricyanti Putri Senjaya Toto Sunarto Wawan Kurniawan Yani Maharani Yongki Umam Sandi Yongki Umam Sandi Yusup Hidayat