Gadi V. P. Reddy, Susumu Shimizu, Katsuya Ichinose
Laboratory and field experiments were performed to evaluate the pathogenicity of an isolate of the entomopathogenic fungus Metarhizium anisopliae to the two sympatrically occurring weevil species, Cylas formicarius and Euscepes postfasciatus. In the laboratory bioassays, suspension of conidia, ≥106 CFU/mL, caused mortalities > 80% on adults of both weevils in seven days after inoculation. It took longer time 20 days for grain formulation of the isolate adhered on rice grains of ≥5 g/m2 (107 CFU/g) to attain similar mortalities of E. postfasciatus, but no evident mortality was obtained in C. formicarius. The grain formulation was thus less effective on C. formicarius than the suspension. Field trials were carried out over two years from 2013 to 2014, in which adults of E. postfasciatus were released two times during the field experiments for enhancement of damage on plants by this weevil, whereas the other weevil species was left to naturally invade the experimental plots by flying. The results of the experiments revealed in both years that two applications of the isolate in grain formulation, equivalent to 50 kg/hectare, sprayed manually over the ground surface reduced the infestation of plants and tuber damage by weevils of both species as much as the conventional chemical insecticide applications. The occurrences of weevils at harvest were not significantly different among treatments. The potential and possible uses of the fungus are discussed for the management of these two weevil species.
{"title":"Different Susceptibility in the Two Sympatric Sweet Potato Weevils, <i>Cylas formicarius</i> and <i>Euscepes postfasciatus</i>, to the Entomopathogenic Fungus <i>Metarhizium anisopliae</i>","authors":"Gadi V. P. Reddy, Susumu Shimizu, Katsuya Ichinose","doi":"10.4236/as.2023.149086","DOIUrl":"https://doi.org/10.4236/as.2023.149086","url":null,"abstract":"Laboratory and field experiments were performed to evaluate the pathogenicity of an isolate of the entomopathogenic fungus Metarhizium anisopliae to the two sympatrically occurring weevil species, Cylas formicarius and Euscepes postfasciatus. In the laboratory bioassays, suspension of conidia, ≥106 CFU/mL, caused mortalities > 80% on adults of both weevils in seven days after inoculation. It took longer time 20 days for grain formulation of the isolate adhered on rice grains of ≥5 g/m2 (107 CFU/g) to attain similar mortalities of E. postfasciatus, but no evident mortality was obtained in C. formicarius. The grain formulation was thus less effective on C. formicarius than the suspension. Field trials were carried out over two years from 2013 to 2014, in which adults of E. postfasciatus were released two times during the field experiments for enhancement of damage on plants by this weevil, whereas the other weevil species was left to naturally invade the experimental plots by flying. The results of the experiments revealed in both years that two applications of the isolate in grain formulation, equivalent to 50 kg/hectare, sprayed manually over the ground surface reduced the infestation of plants and tuber damage by weevils of both species as much as the conventional chemical insecticide applications. The occurrences of weevils at harvest were not significantly different among treatments. The potential and possible uses of the fungus are discussed for the management of these two weevil species.","PeriodicalId":7600,"journal":{"name":"Agricultural sciences","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135441843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pierre-Marie Janvier Coffi, Joséphine Tamia Ama, Thierry Tacra Lekadou, Siaka Traore, Charly Fernand Agoh, Didier Martial Saraka Yao
Pressure on land tenure is having a negative impact on the coconut sector, reducing farmers’ incomes. Intercropping cultivars plantain under coconut based has been considered as a solution to this problem. The aim of this work is to diversify the sources of income for coconut growers. The plantain variety PITA 3, popularised by the CNRA, was grown in coconut inter-rows (PB113+), with two types of manure (chemical, organic). Six (06) treatments D1, D2, D3, D4, D5 and D6 were studied. In the tenth month after planting, treatment D3, which included banana plants fertilised with 9 kg of manure/plant, got the best agromorphological performance: height (264.08 cm), neck circumference (57.68 cm) and 12 leaves. In terms of production parameters, D3 banana plants had a shorter production cycle (347 days) and the highest diet mass (9.3 kg). However, the plants that received no fertiliser (D6) showed stunted growth and were unable to produce brunch. The fertilization of plantain with 10 t/ha of laying hen droppings permitted good development and production of plantains on tertiary sands.
土地使用权的压力对椰子行业产生了负面影响，减少了农民的收入。在椰子基础上间作大蕉被认为是解决这一问题的良方。这项工作的目的是使椰子种植者的收入来源多样化。大蕉品种PITA 3，由CNRA推广，种植在椰子行间(PB113+)，使用两种肥料(化学肥料和有机肥料)。研究D1、D2、D3、D4、D5、D6 6个处理(06个)。种植后第10个月，施肥9 kg /株的D3处理香蕉植株农艺性状最佳:株高264.08 cm，颈围57.68 cm，叶片12片。在生产参数方面，D3香蕉植株的生产周期较短(347 d)，日粮质量最高(9.3 kg)。然而，没有施用肥料(D6)的植株生长发育迟缓，不能生产早午餐。以10吨/公顷的蛋鸡粪便对大蕉进行施肥，可使大蕉在第三纪沙地上发育和生产良好。
{"title":"Evaluation of the Productivity of Intercropping Plantain Cultivar (PITA 3) Fertilized with Two Types of Manure, under Coconut Tree Based (<i>Cocos</i> nucifera L.), on the Tertiary Sands of Côte d’Ivoire","authors":"Pierre-Marie Janvier Coffi, Joséphine Tamia Ama, Thierry Tacra Lekadou, Siaka Traore, Charly Fernand Agoh, Didier Martial Saraka Yao","doi":"10.4236/as.2023.1410092","DOIUrl":"https://doi.org/10.4236/as.2023.1410092","url":null,"abstract":"Pressure on land tenure is having a negative impact on the coconut sector, reducing farmers’ incomes. Intercropping cultivars plantain under coconut based has been considered as a solution to this problem. The aim of this work is to diversify the sources of income for coconut growers. The plantain variety PITA 3, popularised by the CNRA, was grown in coconut inter-rows (PB113+), with two types of manure (chemical, organic). Six (06) treatments D1, D2, D3, D4, D5 and D6 were studied. In the tenth month after planting, treatment D3, which included banana plants fertilised with 9 kg of manure/plant, got the best agromorphological performance: height (264.08 cm), neck circumference (57.68 cm) and 12 leaves. In terms of production parameters, D3 banana plants had a shorter production cycle (347 days) and the highest diet mass (9.3 kg). However, the plants that received no fertiliser (D6) showed stunted growth and were unable to produce brunch. The fertilization of plantain with 10 t/ha of laying hen droppings permitted good development and production of plantains on tertiary sands.","PeriodicalId":7600,"journal":{"name":"Agricultural sciences","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135212756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Subrata Paul, B. Nath, A. Hossen, Kamruzzaman Pintu, Haimonti Paul, Sharmin Islam, Arafat Ullah Khan, Moudud Ahmmed
{"title":"Development and Fabrication of Manually Push-Pull Type Conical Weeder for Bangladesh Condition","authors":"Subrata Paul, B. Nath, A. Hossen, Kamruzzaman Pintu, Haimonti Paul, Sharmin Islam, Arafat Ullah Khan, Moudud Ahmmed","doi":"10.4236/as.2023.145046","DOIUrl":"https://doi.org/10.4236/as.2023.145046","url":null,"abstract":"","PeriodicalId":7600,"journal":{"name":"Agricultural sciences","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83110110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jonathan B. Brye, Diego Della Lunga, K. Brye, Chandler Arel, Shane Ylagan
{"title":"Phosphorus Fertilizer Effects on Near-Surface Soil Aggregation in Furrow-Irrigated Rice on a Silt-Loam Soil","authors":"Jonathan B. Brye, Diego Della Lunga, K. Brye, Chandler Arel, Shane Ylagan","doi":"10.4236/as.2023.146055","DOIUrl":"https://doi.org/10.4236/as.2023.146055","url":null,"abstract":"","PeriodicalId":7600,"journal":{"name":"Agricultural sciences","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86579594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Atakora, M. Essilfie, Kofi A. Agyarko, H. Dapaah, K. G. Santo
{"title":"Evaluation of Yield and Yield Components of Some Cowpea (<i>Vigna unguiculata</i> (L.) Walp) Genotypes in Forest and Transitional Zones of Ghana","authors":"K. Atakora, M. Essilfie, Kofi A. Agyarko, H. Dapaah, K. G. Santo","doi":"10.4236/as.2023.147059","DOIUrl":"https://doi.org/10.4236/as.2023.147059","url":null,"abstract":"","PeriodicalId":7600,"journal":{"name":"Agricultural sciences","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79414044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Chitin, Biochar, and Animal Manures Impact on Eggplant and Green Pepper Yield and Quality","authors":"G. Antonious, Anuj Chiluwal, Anjan Nepal","doi":"10.4236/as.2023.143024","DOIUrl":"https://doi.org/10.4236/as.2023.143024","url":null,"abstract":"","PeriodicalId":7600,"journal":{"name":"Agricultural sciences","volume":"100 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80877239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. I. Thio, B. Thio, N. Ouédraogo, Frank Essem, Inoussa Drabo, Oumar Boro, F. W. Nikiema, P. Sombié, David Yago, H. Bama, M. Sawadogo, P. Sérémé
{"title":"Evaluation of Soybean Genotypes (<i>Glycine max</i> L. Merr.) Susceptibility to Parasitic Nematodes in Western Part of Burkina Faso","authors":"G. I. Thio, B. Thio, N. Ouédraogo, Frank Essem, Inoussa Drabo, Oumar Boro, F. W. Nikiema, P. Sombié, David Yago, H. Bama, M. Sawadogo, P. Sérémé","doi":"10.4236/as.2023.141003","DOIUrl":"https://doi.org/10.4236/as.2023.141003","url":null,"abstract":"","PeriodicalId":7600,"journal":{"name":"Agricultural sciences","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87750706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cameroon’s Rice Sector Faced with Import Dependency","authors":"N.P.B. Mbondji, D. E. Fon","doi":"10.4236/as.2023.141005","DOIUrl":"https://doi.org/10.4236/as.2023.141005","url":null,"abstract":"","PeriodicalId":7600,"journal":{"name":"Agricultural sciences","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87608277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sekouba Sanogo, S. Diallo, D. Nyadanu, Teyiouê Benoit Joseph Batieno, N. Sawadogo
{"title":"Selection of Cowpea [(<i>Vigna unguiculata</i> (L.) WALP] Genotypes for Drought Tolerance Using Selection Indices","authors":"Sekouba Sanogo, S. Diallo, D. Nyadanu, Teyiouê Benoit Joseph Batieno, N. Sawadogo","doi":"10.4236/as.2023.143025","DOIUrl":"https://doi.org/10.4236/as.2023.143025","url":null,"abstract":"","PeriodicalId":7600,"journal":{"name":"Agricultural sciences","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88689492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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