scholarly journals Repellent Effect of the Caraway Carum carvi L. on the Rice Weevil Sitophilus oryzae L. (Coleoptera, Dryophthoridae)

Insects ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 836
Author(s):  
Małgorzata Kłyś ◽  
Aleksandra Izdebska ◽  
Natalia Malejky-Kłusek
Keyword(s):  
Relative Humidity ◽  
Essential Oil ◽  
Exposure Time ◽  
Plant Material ◽  
Laboratory Tests ◽  
Sitophilus Oryzae ◽  
Rice Weevil ◽  
Repellent Effect ◽  
Carum Carvi ◽  
Normal Relationship

The aim of the study was to check the effect of Carum carvi L. essential oil and L-carvone on the emigration, repellence and mortality of Sitophilus oryzae L. In the experiments with caraway essential oil, concentrations of 0.1%, 0.5% and 1% were used, and concentrations of 0.05, 0.1, 0.5 and 1% were used with L-carvone. We assessed whether, in what concentrations and after what exposure time the substances acted on S. oryzae as repellents and/or insecticides. The laboratory tests were carried out at 29 ± 1 °C with 60 ± 5% relative humidity (RH). The deterrence, mortality and abundance of insects were noted after 1, 2, 3, 4, 5, 24 and 48 h. For caraway essential oil and L-carvone, the highest repellency was not shown in the highest concentrations that were used in the tests but in the lower concentrations of 0.5% and 0.1%, respectively. In all used concentrations, caraway essential oil showed repellent effects on S. oryzae. The highest repellency (60–98%) was caused by 0.5% caraway essential oil after 1, 2, 3, 4 and 5 h of research and by 0.1% L-carvone (16–100%). The highest mortality of S. oryzae was caused by 0.5% caraway essential oil and 1% L-carvone. L-carvone at a concentration of 0.05% did not cause mortality in S. oryzae. In conclusion, the greatest repellent effects on S. oryzae were caused by lower doses of caraway essential oil and L-carvone. These compounds do not show the normal relationship described in the previous literature on warehouse pests, in which the repellency increased with increasing concentrations of the tested plant material.

scholarly journals Repellent effect of the caraway Carum carvi L. on the rice weevil Sitophilus oryzae L. (Coleoptera, Curculionidae)

2020 ◽  
Author(s):  
Małgorzata Kłyś ◽  
Aleksandra Izdebska ◽  
Natalia Malejky-Kłusek
Keyword(s):  
Essential Oil ◽  
Sitophilus Oryzae ◽  
Rice Weevil ◽  
Repellent Effect ◽  
Carum Carvi

Abstract ObjectiveThe aim of the study was to check whether Carum carvi L. essential oil and L-carvone act on Sitophilus oryzae L. as repellents and/or insecticides, in what concentrations and after what time. ResultsCaraway essential oil and L-carvone the highest repellency showed not in the highest concentrations used in the tests (1%), but in lower concentrations, respectively 0.5% and 0.1%. Caraway essential oil in all used concentrations showed repellent effects on S. oryzae. The highest repellency (60-98%) caused caraway essential oil in concentration 0.5% after 1, 2, 3, 4 and 5 h of the research. The highest repellence of L-carvone (16-100%) resulted in concentration 0.1%. The highest mortality of S. oryzae caused 0.5% caraway essential oil.

scholarly journals Repellent effect of the caraway Carum carvi L. on the rice weevil Sitophilus oryzae L. (Coleoptera, Curculionidae)

2020 ◽  
Author(s):  
Małgorzata Kłyś ◽  
Aleksandra Izdebska ◽  
Natalia Malejky-Kłusek
Keyword(s):  
Essential Oil ◽  
Sitophilus Oryzae ◽  
Rice Weevil ◽  
Repellent Effect ◽  
Carum Carvi

Abstract ObjectiveThe aim of the study was to check whether Carum carvi L. essential oil and L-carvone act on Sitophilus oryzae L. as repellents and/or insecticides, in what concentrations and after what time. ResultsCaraway essential oil and L-carvone the highest repellency showed not in the highest concentrations used in the tests (1%), but in lower concentrations, respectively 0.5% and 0.1%. Caraway essential oil in all used concentrations showed repellent effects on S. oryzae. The highest repellency (60-98%) caused caraway essential oil in concentration 0.5% after 1, 2, 3, 4 and 5 h of the research. The highest repellence of L-carvone (16-100%) resulted in concentration 0.1%. The highest mortality of S. oryzae caused 0.5% caraway essential oil.

Ozone as a Potential Fumigant Alternative for the Management of Sitophilus oryzae (Coleoptera: Curculionidae) in Wheat

2019 ◽  
Vol 112 (4) ◽  
pp. 1953-1963 ◽  
Author(s):  
Barbara A Amoah ◽  
Rizana M Mahroof
Keyword(s):  
Survival Rate ◽  
Exposure Time ◽  
Insect Pest ◽  
Sitophilus Oryzae ◽  
Adult Emergence ◽  
Rice Weevil ◽  
Ozone Exposure ◽  
Immature Stages ◽  
Gas Loss ◽  
Wheat Kernels

Abstract Gaseous ozone, an oxidizing agent used as a disinfectant in food processing and preservation, has potential for the control of stored product insects. In this study, we investigated ozone for the management of the rice weevil, Sitophilus oryzae (L.) (Coleoptera: Curculionidae), a serious stored product insect pest. We exposed eggs, immature stages within wheat kernels, and adults of the rice weevil to 200-ppm ozone for 12, 24, 36, 48, and 60 h. Insects were placed at 5, 15, or 25 cm depth within a wheat mass in PVC pipes (10 cm in diameter, 30 cm in height) and exposed to ozone. Egg eclosion was recorded 10 d after treatment (DAT), and immature stages were observed for adult emergence 28 DAT. Adults were observed for survival immediately after ozone exposure and again at 1 and 2 DAT. Egg eclosion was significantly lower at 5 cm compared with 25 cm at all exposure times, but not the 12-h exposure time. For each exposure time tested, significantly lesser adults developed from kernels and none of the adults survived at the 5 cm depth compared with the 15 and 25 cm depths. Survival rate of adults was significantly higher at 25 cm depth than at 15 cm depth at the 24–60 h. The deeper the insect in the grain mass, the higher the survival rate. The work reported suggests that ozone is effective in killing all life stages of S. oryzae; however, the efficacy of the gas is dependent on the concentration, exposure time, depth, and gas loss.

scholarly journals Repellent Effect of the Pandanus (Pandanus amaryllifolius Roxb.) and Neem (Azadirachta indica) Against Rice Weevil Sitophilus oryzae L. (Coleoptera, Curculionidae)

2021 ◽  
Author(s):  
Slamet Fauzi ◽  
Sigit Prastowo
Keyword(s):  
Weight Loss ◽  
Azadirachta Indica ◽  
Sitophilus Oryzae ◽  
Rice Weevil ◽  
Repellent Effect ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Pandanus Amaryllifolius

The aim of this study was to determine the effect of Pandanus (Pandanus amaryllifolius 20 Roxb.) and Neem (Azadirachta indica) leaves powder on the repellency, mortality, and weight loss 21 of grains due to Sitophilus oryzae. The methodes of this study used a completely randomized design 22 (CRD) with 7 treatments and 4 replications. The results of this study indicate that the best treat- 23 ment in terms of causing repellency was the treatment of 10 grams of pandanus with a percentage 24 of 87.5%, while the best treatment in terms of causing pest mortality and was also able to reduce 25 the risk of rice weight loss due to Sitophilus oryzae was treatment 10 gram of neem with a mortality 26 percentage of 76.25% and weight loss of rice 3.14%. This research showed that neem leaf com- 27 pounds are better in terms of causing mortality, while Pandanus compounds are better in terms of 28 causing mortality of Sitophilus oryzae.

scholarly journals Repellent Activity of Waste Extract from Two Local Medicinal Plant Against Rice Weevil (Sitophilus oryzae)

2019 ◽  
Vol 11 (1) ◽  
pp. 62-67
Author(s):  
Priyantini Widiyaningrum ◽  
Devy Candrawati ◽  
Dyah Rini Indriyanti ◽  
Bambang Priyono
Keyword(s):  
Medicinal Plants ◽  
Waste Product ◽  
Sitophilus Oryzae ◽  
Rice Weevil ◽  
Repellent Effect ◽  
Insect Repellents ◽  
Preference Index ◽  
Ethanolic Extracts ◽  
Waste Extract ◽  
Better Than

In order to find natural and inexpensive bioinsecticides, the active compound of waste extract from two medicinal plants were analyzed.  Ethanolic extracts of Amomum cardamomum and Zingiber zerumbet were evaluated under laboratory conditions for their repellency against rice weevil (Sitophilus oryzae, L.). Four extracts concentration were tested in this research, i.e: 25, 50, 75 and 100%.  Efficacy was measured based on the response of rice weevil in preference tests using Y Olfactometer Tube, then the results were converted into the Percentage Repellency (PR) and Preference Index (PI). The PR data were analyzed using ANOVA, whereas PI values were analyzed descriptively. The result showed that the PR were significantly (LSD test; α> 0.05) and revealed that waste extracts repel the rice weevil at 100% solution.  The highest PR was found at 100% solution in both extracts, however, statistically the repellency of A. cardamomum waste extract was higher than Z. zerumbet’s. Likewise, the PI of both extracts showed negative value at 75 and 100% concentration. This study concluded that extract of A. cardamomum and Z. zerumbet wastes have repellent effect against rice weevil and A. cardamomum repellency is better than Z. zerumbet. The findings of this study can provide a useful information for development of a rice weevil repellent extracted from waste product of medicinal plants that is more economically and environmentally friendly than synthetic insect repellents.

scholarly journals Essential oil bioactivity evaluation of the different populations of Cupressus against adult rice weevil (Sitophilus oryzae L.)

2021 ◽  
Vol 20 (77) ◽  
pp. 79-92
Author(s):  
Mohammadreza Labbafi ◽  
Maryam Ahvazi ◽  
Farahnaz Khalighi-Sigaroodi ◽  
Hamideh Khalaj ◽  
Soolmaz Ahmadian ◽  
...  
Keyword(s):  
Essential Oil ◽  
Sitophilus Oryzae ◽  
Rice Weevil ◽  
Different Populations

Contribution to the Optimization of a Gas Chromatographic Method by QbD Approach used for Analysis of Essential Oils from Salvia officinalis

2019 ◽  
Vol 70 (6) ◽  
pp. 2015-2020
Author(s):  
Silvia Robu ◽  
Aurelia Romila ◽  
Olimpia Dumitriu Buzia ◽  
Adrian Florin Spac ◽  
Camelia Diaconu ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Plant Material ◽  
Mobile Phase ◽  
Chromatographic Method ◽  
Salvia Officinalis ◽  
Salvia Officinalis L ◽  
Gas Chromatographic Method

Numerous articles on Salvia officinalis L. have been published regarding the composition of their essential oil. The considerable variation found may be due to the quality of the plant material as well as to the methods used for analysis. A simple GC-MS method was developed and optimized in the QbD approach, for the determination of sage essential oils. The optimization of GC-MS analysis was performed using different mobile phase flows, injection volumes, split ratios and temperature programs. The optimized method proved to be simple and can be successfully applied for the determination of sage essential oils.

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