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Cropsaver : Journal of Plant Protection

cropsaver
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Published by Universitas Padjadjaran

ISSN : - EISSN : 26215756 DOI : -

Core Subject : Science,

Biochemistry, Genetics & Molecular Biology

The objective of the CROPSAVER Journal is to present articles containing interesting and strategic issues. This journal discusses the discussion of articles with discussion rooms in the fields of plant pests and diseases, technology for pest control, taxonomy, insect physiology, biological insects, toxicology of pesticides, settlement pests that help research, research and research.

Arjuna Subject : -

Articles 6 Documents

Search results for , issue "Vol 2, No 1 (2019)" : 6 Documents clear

Toxicity of Barringtonia asiatica Seed Extract Against Chilo sachariphagus Rohendi Rohendi; Danar Dono; Andang Purnama
CROPSAVER Vol 2, No 1 (2019)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Barringtonia asiatica is one of the plants that the seeds extracts has insecticidal properties. However, the bioactivity of this seed extract has not been tested against Chilo sacchariphagus larvae which is the main pests in sugar cane. The treatment was carried out at several levels of concentration of methanolic seed extract of B. asiatica. The 15 cm of fresh sugarcane shoot dipping into the extract solution in some second. After the solution of extract on the sugarcane shoot dried, the first instar of larvae infested to the sugarcane shoot and then put into 20 cm test tube with 3 cm of diameter. The duration of feeding on treated sugarcane shoot was two days and on the following day the larvae were fed on sugar cane shoots until the survived larvae reached the 5th instar. The results of the experiment indicated that B. asiatica seed extract was toxic to C. sacchariphagus with an LC50 value of 0.398% at 16 days after treatment. Besides toxic, B. asiatica seed extract also has atifeedant activity, and inhibits the growth of immature of C. sacchariphagus in all tested concentrations.Keyword: Toxicity, antifeedant, lethal concentration, Barringtonia asiatica, Chilo sachariphagus

Effect of the Initial Temperature of Extraction of Neem Cake (Azadirachta indica A. JUSS) on its Toxicity on Crocidolomia pavonana (F.) Larvae Fhera Hardiani; Danar Dono; Ceppy Nasahi
CROPSAVER Vol 2, No 1 (2019)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Crocidolomia pavonana is an important pest that attacks the Brassicaceae. Neem cake is waste from neem seed pressing that can be used as a botanicals insecticide to control insect pests. The effect of the initial temperature of extraction can have an impact on the toxicity of the extract. The aim of this study was to determine the best initial temperature for the extraction of neem cake on mortality, larval development time, feed consumption, larval weight and survival of larvae into pupae and adult. The experimental method used in this research was Randomized Completely Design (RCD) with 4 treatments and 4 replication, i.e. control, extraction of neem cake at initial temperature of 30°C, initial temperature 50°C, and initial temperature 70°C which allows two concentrations of 1% and 3%. The results of the research with the best toxicity were shown in the initial extraction temperature of 50°C at concentrations of 1% and 3% with the mortality reaching 82.5% and 90%. The initial temperature extraction of 50°C also showed lengthened of the larval development time, decreased feeding activity, larval weight and survival of larvae to develop into pupae and imago.

Assessment of Sarocladium oryzae Growth Inhibition, the Causal Agent of Rice Sheath Rot Disease, Using Methanol Extract of Binahong Leaves Endah Yulia; Silviya Rahma Dhiya Syafira; Fitri Widiantini; Wawan Kurniawan
CROPSAVER Vol 2, No 1 (2019)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Sheath rot disease caused by Sarocladium oryzae is an important disease on rice. The pathogen that infects uppermost leaf sheath enclosing to the young panicles can cause yield losses up to 85%. Though the disease is commonly controlled using synthetic fungicides, the use of natural products that safer to the environment have been enormously explored. The research aimed to test growth inhibition of S. oryzae colony using methanol leaf extract of binahong (Anredera cordifolia). The research was carried out from June until December 2017 at the Laboratory of Biotechnology Plant Protection, Department of Plant Pest and Diseases, Faculty of Agriculture, Universitas Padjadjaran. The method used was Randomized Complete Design consisted of six treatments and four replications. The treatments were five concentrations of binahong leaf extract of 0.125%, 0.25%, 0.5%, 1%, 2% and one control treatment. The result showed that binahong leaf extract did not inhibit the growth of S. oryzae. The highest inhibition percentage of 4.55% at 0.25% concentration was considered to be a low inhibition category. Although the colony growth of S. oryzae was not significantly inhibited, the extract caused hyphal abnormalities. This actually shows the antifungal potency of the binahong leaf extract that needed further examination with more adequate methods.Keywords : Anredera cordifolia, botanical pesticide, rice sheath rot

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

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.

Synergistic Activity of Mixtures of Piper aduncum Fruit Extract and Three Microorganism-Derived Insecticides against the Diamond Back Moth, Plutella xylostella Wanda Russianzi; Djoko Prijono
CROPSAVER Vol 2, No 1 (2019)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Plutella xylostella is an important pest of Brassicaceae vegetable crops. Frequent use of insecticides containing single active ingredients can cause resistance in P. xylostella. This work was done to evaluate the synergism between Piper aduncum fruit extract and three microorganism-derived insecticides, i.e. abamectin, chlorfenapyr, and spinetoram, against P. xylostella from Pacet District, Cianjur Regency. Results of leaf-residue feeding bioassays with 48-h feeding treatment showed that LC95 of abamectin, chlorfenapyr, and spinetoram at 96 h after treatment (HAT) was about 5.8, 7.0, and 1.9-fold higher than their respective field rates. Thus, based on leaf-feeding assays P. xylostella larvae from Pacet-Cianjur were not susceptible to abamectin and chlorfenapyr, but were still fairly susceptible to spinetoram. LC95 of P. aduncum extract at 96 HAT was 0.68% (w/v). Based on combination index at the LC95 level - 96 HAT, mixtures of P. aduncum extract with all three test insecticides were synergistic. Thus, P. aduncum extract is potential to be used as an alternative ingredient to increase the effectiveness of the three test insecticides against P. xylostella.Keywords: Botanical insecticides, cabbage pest, insecticide mixtures, microorganism-derived insecticides, synergism.

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

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