scholarly journals Evaluation of Botanical Powders for the Management of Rice Weevil (Sitophilus oryzae L. Coleoptera: Curculionidae) in Rupandehi, Nepal

2021 ◽  
Vol 2021 ◽  
pp. 1-5
Author(s):  
Dipak Khanal ◽  
Subin Babu Neupane ◽  
Archana Bhattarai ◽  
Swarnima Khatri-Chhetri ◽  
Nisha Nakarmi ◽  
...  
Keyword(s):  
Rural Areas ◽  
Sitophilus Oryzae ◽  
Zingiber Officinale ◽  
Triticum Aestivum L ◽  
Rice Weevil ◽  
Acorus Calamus ◽  
Tobacco Leaf ◽  
Randomized Design ◽  
Nicotiana Tabacum L ◽  
Sweet Flag

An experiment to manage rice weevil (Sitophilus oryzae L. Coleoptera: Curculionidae) in wheat (Triticum aestivum L. Gramineae) was carried out at Institute of Agriculture and Animal Science (IAAS), Paklihawa Campus, Rupandehi, Nepal. The experiment was conducted under completely randomized design (CRD) with seven treatments viz. neem leaf dust (Azadirachta indica A. Juss) 15 g/kg, tobacco leaf dust (Nicotiana tabacum L.) 10 g/kg, ginger rhizome powder (Zingiber officinale Roscoe) 20 g/kg, garlic cloves powder (Allium sativum L.) 20 g/kg, Sichuan pepper seed powder (Zanthoxylum armatum Roxb.) 10 g/kg, sweet flag rhizome dust (Acorus calamus L.) 5 g/kg, and control with three replication. Result revealed that the highest mortality of weevils was observed in the wheat seed treated with A. calamus (98.33%), followed by N. tabacum (85.67%), A. sativum (73.34%), A. indica (70.67%), Z. armatum (70.34%), and Z. officinale (58.34%). Similarly, the lowest percent weight loss (3.32%) and damage of seed (4.0%) were observed in wheat treated with A. calamus. Moreover, the highest germination (89%) was observed in seeds treated with A. calamus rhizome powder when tested at 90 days after treatment application. Based on weevil mortality and the germination test, it is found that sweet flag rhizome powder is the best treatment against rice weevil followed by tobacco leaf dust and garlic clove powder. Therefore, these botanicals could be one of the effective alternatives for the management of weevil especially to the farmers who do not use chemical insecticides in the rural areas of Nepal.

scholarly journals Toxicity of tobacco Nicotiana tabacum Linnaeus (Solanaceae) leaf extracts to the rice weevil Sitophilus oryzae Linnaeus 1763 (Coleoptera: Curculionidae)

2021 ◽  
Vol 82 (1) ◽  
Author(s):  
Sekar Kanmani ◽  
Lokesh Kumar ◽  
Rajasingh Raveen ◽  
Samuel Tennyson ◽  
Subramanian Arivoli ◽  
...  
Keyword(s):  
Nicotiana Tabacum ◽  
Petroleum Ether Extract ◽  
Sitophilus Oryzae ◽  
Acid Methyl Ester ◽  
Adult Mortality ◽  
Rice Weevil ◽  
Leaf Extracts ◽  
Tobacco Leaf ◽  
Worldwide Production ◽  
Promising Source

Abstract Background Rice is the agricultural commodity with the third highest worldwide production and losses in rice storage due to insect pests may drastically affect the food availability for a large number of people. One of its serious pests in tropics is the “rice weevil”, Sitophilus oryzae. Although few effective fumigants are available, there is a global concern about environmental pollution, toxicity to non-target organisms, and pesticide residues. Botanicals are a promising source of pest control compounds as the pool of plants possessing insecticidal substances are enormous and have generated extraordinary interest in recent years as potential sources of natural insect control agents. The present study was conducted to determine the toxicity of tobacco (Nicotiana tabacum) leaf extracts as an alternative to synthetic insecticides in the management of rice weevils. The crude solvent leaf extracts of N. tabacum were analyzed for its phytochemical compounds via GC-MS and tested for its toxicity to the adults of S. oryzae at concentrations of 0.625, 1.25, 2.50, 5.00, 10.00, and 20.00 mg/L by Petri dish bioassay method. Adult mortality was calculated 24, 48, and 72 h after exposure. Results The constituent compounds in the chloroform and acetone revealed 13 compounds represented by benzene carboxylic acid ester, alkaloids, and steroids. The major compounds found in GC-MS analysis are nicotine, nicotinonitrile, nornicotine, nicotinic acid, neonicotine, cotinine, indole, farnesol, sclareol, 9,12-octadecadienoic acid, squalene, palmitic acid, and 15-tetracosenoic acid methyl ester. Overall assessment indicates that the chloroform and acetone extracts of N. tabacum leaves exhibited the highest adulticidal activity against S. oryzae. Their LD50 values were 1.62, 0.64, and 0.48; 1.54, 0.83, and 0.48 mg/L after 24, 48, and 72 h of exposure respectively. In addition, the petroleum ether extract also indicated high adult mortality with LD50 value of 0.53 mg/L only at 72 h. Conclusions The present research has documented its first report for the management of rice weevil using tobacco leaf extracts, and therefore on the basis of the results of the present study, it is highly encouraging to note that the use of tobacco leaf extracts with its excellent insecticidal activity owing to the action of nicotine would be economically feasible to alleviate the rice weevil problem.

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 Effect of different packaging materials on the efficacy of sweet flag rhizome powder (Acorus calamus L.) treated sorghum against Sitophilus oryzae

2015 ◽  
Vol 7 (2) ◽  
pp. 922-926
Author(s):  
H. C. Latha ◽  
A. Naganagoud
Keyword(s):  
Seed Quality ◽  
Sitophilus Oryzae ◽  
Glass Container ◽  
Acorus Calamus ◽  
Packaging Materials ◽  
Insect Infestation ◽  
Seed Damage ◽  
Steel Container ◽  
Sweet Flag

An experiment was conducted to know the effect of different packaging materials and sweet flag rhizome on seed quality of sorghum. The graded seeds were packed in six containers viz., polythene cover, mud container, cloth bag, gunny bag, glass container and steel container and seeds were treated with two percent of sweet flag rhizome powder before storage. The different observations viz., number of live adults, seed damage (%) by Sitophilus oryzae and germination (%) of seeds were recorded. The results revealed that the sweet flag rhizome treated seeds packed in steel container, recorded lowest seed damage percentage (32.00%), number of live adults (5.11) and highest seed germination (76.00%) after nine months of treatment. Hence seeds treated with sweet flag rhizome stored in steel containers reduces the insect infestation and steel containers can be effectively used for maintaining seed quality of sorghum during storage.

scholarly journals Perbandingan tumpukan beras Bulog terhadap populasi kutu beras (Sitophilus oryzae L.) dan mutu beras selama masa simpan di Kabupaten Jayawijaya

2021 ◽  
Vol 17 (2) ◽  
pp. 86-92
Author(s):  
Anti Uni Mahanani ◽  
Inrianti
Keyword(s):  
Protein Content ◽  
Research Method ◽  
Sitophilus Oryzae ◽  
Ash Content ◽  
Rice Weevil ◽  
Pest Population ◽  
Randomized Design ◽  
Final Weight ◽  
Completely Randomized Design

This study was aimed to find out the effect of rice pile on pest population and the quality of rice during storage; find out which pile of Bulog rice produces the populations of Rice Weevil pest the most during storage; find out which pile of Bulog rice that produces the best quality during storage. This research was conducted in the laboratory of STIPER Petra Baliem Wamena and the Faculty of Agricultural, Universitas Gadjah Mada Yogyakarta. The observation was done in 1 year, from March 2019 to March 2020. The materials and tools used are Bulog rice, rice weevil pest, cartons, plastics, digital scales, stationary, and oven. The research method applies a Completely Randomized Design. The treatments are G1: 15 Bulog rice pile; G2: 20 Bulog rice pile; G3: 25 Bulog rice pile. The results showed that: 1) The rice pile affected the pest population and the quality of rice during storage; 2) G3 condition produced more rice weevil population than others; 3) G1 condition produced the highest final weight of rice, the lowest broken rice, the highest intact rice, the lowest water content, and ash content, and the highest fat content, protein content, and carbohydrate content.

Sign in / Sign up

Export Citation Format

Share Document