Bioscience JournalPub Date : 2020-03-02DOI: 10.14393/bj-v36n4a2020-50364
E. M. Pires, R. Koch
{"title":"Japanese beetle feeding and survival on apple fruits","authors":"E. M. Pires, R. Koch","doi":"10.14393/bj-v36n4a2020-50364","DOIUrl":"https://doi.org/10.14393/bj-v36n4a2020-50364","url":null,"abstract":"Popillia japonica (Coleoptera: Scarabaeidae), Japanese beetle, is a polyphagous pest of many crops. In these crops, including apple, it acts primarily as a defoliator, causing economic damages. The objectives were to determine the ability of P. japonica to injury fruits of SweeTango variety apples and the suitability of apple fruits as a food source for this beetle. Popillia japonica was not able to injure the surface of intact fruits, which means that it is not a primary pest for apple fruits. The lifespan of the beetles when fed soybean leaves or apple with exposed endocarp was similar. Observations of the feces of the beetles suggest a potential physiological response due the change of food from soybean leaves to apple fruits. Therefore, we can conclude that the adults should not be considered as primary pests of apple fruits; however, they may act as secondary pests if the endocarp of the fruits is exposed by some other agent. \u0000 ","PeriodicalId":48946,"journal":{"name":"Bioscience Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141225422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bioscience JournalPub Date : 2020-03-02DOI: 10.14393/bj-v36n4a2020-50364
E. M. Pires, R. Koch
{"title":"Japanese beetle feeding and survival on apple fruits","authors":"E. M. Pires, R. Koch","doi":"10.14393/bj-v36n4a2020-50364","DOIUrl":"https://doi.org/10.14393/bj-v36n4a2020-50364","url":null,"abstract":"Popillia japonica (Coleoptera: Scarabaeidae), Japanese beetle, is a polyphagous pest of many crops. In these crops, including apple, it acts primarily as a defoliator, causing economic damages. The objectives were to determine the ability of P. japonica to injury fruits of SweeTango variety apples and the suitability of apple fruits as a food source for this beetle. Popillia japonica was not able to injure the surface of intact fruits, which means that it is not a primary pest for apple fruits. The lifespan of the beetles when fed soybean leaves or apple with exposed endocarp was similar. Observations of the feces of the beetles suggest a potential physiological response due the change of food from soybean leaves to apple fruits. Therefore, we can conclude that the adults should not be considered as primary pests of apple fruits; however, they may act as secondary pests if the endocarp of the fruits is exposed by some other agent. \u0000 ","PeriodicalId":48946,"journal":{"name":"Bioscience Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2020-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141225736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bioscience JournalPub Date : 2019-01-01DOI: 10.14393/bj-v35n1a2019-37137
R. Barbosa, A. Lima, Emily Lira Simões, Elilson Gomes de Brito Filho, M. Campos, J. M. Cunha, B. C. Mantovanelli, D. M. P. Silva, F. G. Souza
{"title":"Spatial variation of chemical attributes in archaeological dark earth under cocoa cultivation in Western Amazon","authors":"R. Barbosa, A. Lima, Emily Lira Simões, Elilson Gomes de Brito Filho, M. Campos, J. M. Cunha, B. C. Mantovanelli, D. M. P. Silva, F. G. Souza","doi":"10.14393/bj-v35n1a2019-37137","DOIUrl":"https://doi.org/10.14393/bj-v35n1a2019-37137","url":null,"abstract":": Archeological Dark Earths (ADEs) are fertility soils that are notoriously superior to the vast majority of soils typical of the Amazon region. The study on ADEs has intensified due to the good characteristics presented by these soils, such as high concentration of nutrients (phosphorus, calcium, magnesium). In this sense, the aim of this study was to evaluate the spatial distribution of soil chemical attributes in an area of black archeological earth soil under cocoa cultivation in the municipality of Apuí (AM). The mapping of a 42 x 88 m mesh, with irregular spacing of 6 x 8 m, totaling 88 points, was carried out, and then soil samples were collected at depths of 0.0-0.05; 0.05-0.10; (pH, O.C, Sto C, (H+Al), P, K, Ca, Mg, SB, CEC and V%). Data were analyzed using descriptive and geostatistical statistics techniques. The mean and median values were adjusted to the near values, indicating normal distribution, while the soil chemical attributes were adjusted to the spherical and exponential semivariograms models. The majority of the attributes presented coefficient of variation (CV) between 12.1 and 60%, characterized as average variability, the variables in the study presented different ranges and most of them had a strong spatial dependence. The geostatistical techniques used allowed the adjustments of the theoretical models that best represented the experimental semivariance, thus enabling the construction of thematic maps of the spatial distribution of the values of the attributes of the studied area.","PeriodicalId":48946,"journal":{"name":"Bioscience Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82548003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bioscience JournalPub Date : 2018-01-01DOI: 10.14393/bj-v34n5a2018-39414
R. P. Gomes, Milton C C Campos, W. Brito, J. M. Cunha, A. Muniz, L. S. Silva, E. D. Souza, I. A. Oliveira, L. Freitas
{"title":"Variability and spatial correlation of aggregates and organic carbon in indian dark earth in Apuí region, AM","authors":"R. P. Gomes, Milton C C Campos, W. Brito, J. M. Cunha, A. Muniz, L. S. Silva, E. D. Souza, I. A. Oliveira, L. Freitas","doi":"10.14393/bj-v34n5a2018-39414","DOIUrl":"https://doi.org/10.14393/bj-v34n5a2018-39414","url":null,"abstract":": Having in mind the importance of knowing the variability and spatial correlation of soil properties in Indian Dark Earth (IDE), we evaluated in this study the variability and the spatial correlation of aggregates and carbon in an Ultisol under coffee cultivation in southern Amazonas. It was established a 48 x 88 m sampling grid spaced 06 x 08 m, totalling 88 sampling points. Then soil samples were collected at: 0.0-0.05, 0.05-0.10, and 0.10-0.20 m layers. The spatial variability of the Mean Weighted Diameter (MWD) attributes, aggregates > 2 mm, < 2 mm, bulk density (BD) and organic carbon (OC) was analyzed by adjusting the simple semivariograms, while spatial correlations of the OC with aggregates and BD were analyzed by cross-semivariogram. We could conclude that there was spatial dependence in the variables, wherein the largest ones were observed at 0.0-0.05 m, except for Mean Weighted Diameter (MWD) and aggregates greater than 2.00 mm with larger range of values in depth from 0.05-0.10 and 0.10-0.20 m. The mean weight diameter and aggregate class attributes greater than 2.00 mm had negative spatial correlation with organic carbon at 0.0-0.05 m, while the smaller aggregates than 2.00 mm classes and bulk density correlated positively with organic carbon at 0.0-0.05 m and 0.10-0.20 m.","PeriodicalId":48946,"journal":{"name":"Bioscience Journal","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90095906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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