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Cropsaver : Journal of Plant Protection
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
 1 
Search results for , issue "Vol 5, No 1 (2022)" : 6 Documents clear
The Effectiveness Test of Fusarium cf. solani as Bioinsecticide for Control of Brown Planthopper and Increasing Rice Productivity Wiyantono, Anton; Utami, Darini Sri; Ismangil, Ismangil
CROPSAVER Vol 5, No 1 (2022)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v5i1.39472

Abstract

The entomopathogenic fungus Fusarium cf. solani can be used to control brown planthopper. The study aim to obtain the frequency of spraying of the Fusarium cf. solani against brown planthopper at different altitudes. Experiment by planting IR 64 seedlings on plots of 4 m x 4 m, spacing of  25 cm x 25 cm, 10 tons of compost/ha, and 100 % N, P, K. The experiment was carried out with a 2 factors of RCBD. Factor I is land altitude < 100 m above sea level (P1),  100 – 500 m above sea level (P2), and > 500 m above sea level (P3). Factor II is the frequency of spraying the bioinsecticide of the Fusarium cf. solani consisting of no spraying (F0), one time (F1); and twice (F2). Each treatment was made 4 replications. Fungal bioinsecticide concentration Fusarium cf. solani used was 106 spores/ml with a dose of 300 L bioinsecticide/ha. The variables measured were intensity attack, pest population; and yield of rice. Rice yields included the number of productive tillers, fresh plant weight, dry plant weight, percentage of grain content, and soil productivity. The data were analyzed by F test and continued with Duncan's test with 95 % confidence level. The results showed that the frequency of spraying Fusarium cf. solani had no effect on the pest populations, intensity of damage, and production of rice yields. Altitude affects the pest populations, intensity of crop damage, as well as parameters of rice yields. However, there was no interaction between the spraying frequency of Fusarium cf. solani with the height of the experimental site to the experimental parameters.
In vitro evaluation of aqueous leaf and peel extracts of Musa species for low-input management of fungal leaf spots of sweet potato (Ipomea batatas Linn.) Amarachi G Nwaogu; Florence T Obani; Faith N Iheanacho; David Nwazuo Enyiukwu
CROPSAVER Vol 5, No 1 (2022)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v5i1.39519

Abstract

Sweet potatoes are important food staples in tropical sub-Saharan Africa. Orange flesh sweet potato (OFSP) varieties are especially important for combating vitamin A deficiencies and nutrition-induced blindness. Fungal leaf spots are one of the many challenges constraining its production in Umudike, Southeast, Nigeria. The aims of this experiment were to isolate the causal fungi of leaf spots of OFSP and to attempt their control using aqueous extracts of banana peels, plantain peels and plantain leaf in vitro. Mycotic agents isolated from infected plant were Verticillium longisporum, Rhizoctonia solani, Penicillium chrysogenum and Aspergillus niger. Pathogenicity test conducted on the organisms revealed that the first three pecies were actively pathogenic, with infected sweet potato showing irregular brown spots/blights surrounded by chlorotic hallo around leaf veins and margins of the laminae; while A. niger showed weak infection of the plant.  In the laboratory, four concentrations (10%, 25%, 50% and 75%) of ripe and unripe plantain peels, ripe and unripe banana peels, and senescent and new plantain leaves, griseovid® (a standard antifungal) and control (sterile water) were evaluated in vitro for inhibition of mycelial elongation of the test myco-pathogens associated with the leaf spot disease of the crop. The experiment was laid out as 3 x 4 x 8 factorial in CRD with 3 replications. The botanicals significantly (P≤0.05) and differentially retarded radial growth of the fungus over the control in a dose-dependent manner. However, the fungitoxicity of the botanicals were inferior but compared favourably with the standard antifungal griseofulvin (griseovid®).  Exploiting the potency of these readily available, cost effective and eco-friendly agro-wastes against these fungal pathogens causing leaf blight of sweet potato will not only reduce the hazards and pollution challenges associated with use of synthetic pesticides but also increase food production in developing countries where synthetic fungicides are expensive and out of reach of low-input farmers.
The effect of Tofu Wastewater on Cabbage Growth and Preference of Plutella xylostella Siska Rasiska; Nasya Nabila; Danar Dono; Toto Sunarto; Ceppy Nasahi
CROPSAVER Vol 5, No 1 (2022)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v5i1.36927

Abstract

Tofu wastewater containing a high proportion of organic compound may cause various adverse impacts, such as water pollution which bad smell and degrading the aesthetics of the environment.  The efforts uses of tofu wastewater is a organic liquid fertilizer. The aims of this study was to determine the effect of tofu wastewater on cabbage growth and preference of Plutella xylostella. The experiment was carried out from April to June 2018, at Ciparanje Experimental Field, Faculty of Agriculture, Universitas Padjadjaran. Randomized block design was used with nine treatment concentration of tofu wastewater consist of control 0%, 12.5%, 25%, 37.5%, 50%, 62.5%, 75%, 87.5%, 100%, and three replication. The result showed that tofu wastewater by 100% could increase the growth of cabbage. The highest female P. xylostella preference.
Effectiveness of Neem Seed Extract Formulation (Azadirachta Indica) and Bitung (Barringtonia asiatica) against Mealybug Papaya (Paracoccus marginatus) (Hemiptera: Pseudococcidae) Vinka Salsabilla; Sudarjat Sudarjat; Yani Maharani
CROPSAVER Vol 5, No 1 (2022)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v5i1.39803

Abstract

The papaya mealybug (Paracoccus marginatus) Williams & Granara de Wilink (Hemiptera: Pseudococcidae) is a main pest of papaya plants. Attacks by these pests can cause plants failed to produce the fruit and even to death. The usual control technique used by farmers is the use of synthetic pesticides that have a negative impact on human health and the environment. The alternative to control using botanical insecticides is a good solution to control the population of P. marginatus. The purpose of this study is to know the effect of neem seed oil formulation and bitung to know which treatments with concentrations are most effective in reducing the population density of papaya mealybug pests. The experiment took place in Rejasari Village, Langensari Subdistrict, Banjar City, West Java, from March 2021 to July 2021. Experiment using the Randomized Block Design consisted of ten treatments with three replications. The results were obtained that a formulation of bitung 3% could suppress the densities of papaya mealybug ( P. marginatus) populations at 65%. The average weight of the resulting papaya contained a 3% formulation of bitung found at 9.8 kg/tree. botanical pesticides of bitung oil 3% can be used instead of synthetic pesticides to control the population of P.marginatus.
Potency of Yeasts Isolated from Shallot Rhizosphere to Control Basal Rot (Fusarium oxysporum f.sp. cepae) Disease on Shallot Sri Hartati; Risma Yuniah Nur’haqi; Wahyu Daradjat Natawigena; Tarkus Suganda
CROPSAVER Vol 5, No 1 (2022)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v5i1.38099

Abstract

One of the major diseases of shallots is basal rot disease caused by Fusarium oxysporum f.sp. cepae (FOC). Biocontrol agents can be used as an environmentally friendly control method. Some yeasts isolated from the rhizosphere may have the potencies to control soilborne plant pathogen such as FOC. This study was objected to obtain yeast isolates from the rhizosphere of shallots that have the potencies to control basal rot. The first step was isolation of yeasts from the rhizosphere of shallots and isolation of FOC. The yeast isolates were then tested for their potencies in suppressing FOC in vitro and decreasing the basal rot disease on the shallot plants. There were ten yeast isolates obtained from the rhizosphere of shallot, in which seven isolates were non pathogenic to shallot plant. These seven isolates were further tested  for their potencies in controlling FOC and basal rot disease. The results showed that those isolates were able to inhibit the colony growth of FOC by 16,11% - 38,33% in the in vitro dual culture test, and 21,11% - 38,89% in the production of volatile compound test. The isolates also suppressed the basal rot disease incidences by 8,30% - 24,98%. Isolates Cm2 and Cm3 caused the highest disease suppression (24,98%).
Identification and Characterization of Soft Rot Bacterial Pathogens on Phalaenopsis Orchid in Bali I Putu Wirya Suputra; Gusti Ngurah Alit Susanta Wirya; Nyoman Bintang Kartika Sari; I Gede Rai Maya Temaja; Ni Luh Putu Citra Innosensia
CROPSAVER Vol 5, No 1 (2022)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v5i1.39284

Abstract

The moth orchid (Phalaenopsis sp.) is one of the most popular orchids due to the various colors with distinctive shapes of the flowers. Soft rot disease caused by Pectobacteriaceae (SRP) family is commonly found infected this plant. The infected orchid showed pale-colored to blackish slimy rot. This research was conducted in three locations namely Denpasar, Badung, and Karangasem, and resulted in 10 candidates for pathogenic bacteria. The pathogenicity test of the pathogen candidates was carried out by injecting bacterial suspension into the orchid leaf tissue with the result of 6 bacterial isolates showing soft rot symptoms. Moreover, two specific primers Dda1F-Dda1R and Pcc3F-Pcc3R for Dickeya spp. and Pectobacterium spp. consecutively were used for the PCR test. The electrophoresis result of the PCR product identified the bacteria isolated from infected plants as Dickeya spp. Dickeya spp. showed white to yellowish-white colony color, with convex and circular colony form on PDA medium.

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