Scientia Agropecuaria最新文献_第8页

Integrated nutrient management as a sustainable strategy to recover a decayed Pear (Pyrus communis) orchard 综合营养管理作为恢复腐烂梨园的可持续策略

IF 1.5

Scientia Agropecuaria Pub Date : 2021-07-20 DOI: 10.17268/SCI.AGROPECU.2021.035

Hugo Poblete, R. Ortega-Blu, M. M. Martínez, P. Fincheira

{"title":"Integrated nutrient management as a sustainable strategy to recover a decayed Pear (Pyrus communis) orchard","authors":"Hugo Poblete, R. Ortega-Blu, M. M. Martínez, P. Fincheira","doi":"10.17268/SCI.AGROPECU.2021.035","DOIUrl":"https://doi.org/10.17268/SCI.AGROPECU.2021.035","url":null,"abstract":"Integrated Nutrition Management (INM) is a concept developed during the last decade in fruit agroecosystems based on the application of organic matter, biostimulants, and adjusted chemical fertilization to improve soil quality, plant rhizogenesis, and nutrition. Nevertheless, there are few studies on the application of the INM concept on the recovery of decayed orchards. The present study was focused on the evaluation of the effects of INM on soil and plant quality changes as recovery indicators of a decayed pear orchard. Two treatments (T 1 : conventional, T 2 : INM) were evaluated under three tree vigor levels, during two growing seasons. Old pear trees were used in a factorial experiment of two treatments (control and INM) x three vigor levels, based on a previous aerial Normalized Difference Vegetation Index (NDVI) image. Soil properties, nutrient leaf contents, and NDVI were evaluated. Soil chemical and biological properties and their spatial variability were determined after two and fi ve years of treatment application, respectively. The INM improved β -glucosidase activity, reduced bulk density, and increased soil porosity. Furthermore, nutrient indices (NDVI x N, K, Ca, Mg, Cu, Fe, and B) were significantly increased under INM. After two years, soil chemical properties and root density were improved by INM. A significantly higher yield, soil organic matter, soluble C, and dehydrogenase activity was observed with INM after five growing seasons. The results indicated that INM is a sustainable alternative for recovering decayed orchards, through the inclusion of good-quality organic matter within the management program.","PeriodicalId":21642,"journal":{"name":"Scientia Agropecuaria","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45561239","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}

引用次数: 2

Detection and identification of high Andean plant communities, Wetlands and Tolar de Puna Seca by means of RGB and NDVI orthophotos in “Unmanned Aerial Systems” drones 通过“无人机系统”无人机中的RGB和NDVI正射照片探测和识别安第斯高山植物群落、湿地和Tolar de Puna Seca

IF 1.5

Scientia Agropecuaria Pub Date : 2021-07-20 DOI: 10.17268/SCI.AGROPECU.2021.032

Andrés Corsino Estrada Zuñiga, Javier Vásquez

引用次数: 2

Bursera graveolens essential oil: Physiochemical characterization and antimicrobial activity in pathogenic microorganisms found in Kajikia audax Bursera graveolens精油：在Kajikia audax中发现的病原微生物的理化特征和抗菌活性

IF 1.5

Scientia Agropecuaria Pub Date : 2021-07-20 DOI: 10.17268/SCI.AGROPECU.2021.033

Kevin Carlos Noel-Martinez, Gerardo Juan Francisco Cruz, R. L. Solis-Castro

{"title":"Bursera graveolens essential oil: Physiochemical characterization and antimicrobial activity in pathogenic microorganisms found in Kajikia audax","authors":"Kevin Carlos Noel-Martinez, Gerardo Juan Francisco Cruz, R. L. Solis-Castro","doi":"10.17268/SCI.AGROPECU.2021.033","DOIUrl":"https://doi.org/10.17268/SCI.AGROPECU.2021.033","url":null,"abstract":"Essential oils are products from aromatic plants, which, due to their biological, allelopathic, antioxidant and antimicrobial effects, are important for food preservation. Kajikia audax is a fish of great commercial importance, however, it is highly perishable, requiring strategies to extend its shelf life. In vitro antimicrobial activity of Bursera graveolens essential oil was determined against microorganisms isolated from K. audax. Essential oil was extracted by steam distillation, obtaining a yield of 1.25%, a density of 0.83 g/ml and a refractive index of 1.473°, in addition, it was determined by GC-MS that D-limonene (77.6%) is the majority compound. Antimicrobial tests showed that the minimum inhibitory concentration (MIC) for Aeromonas salmonicida and Pichia kudriavzevii was 1.62 mg/ml and 6.48 mg/ml respectively, and the minimum bactericidal concentration (MBC) was 25.92 mg/ml for both microorganisms. Pseudomonas aeruginosa showed total resistance against the concentrations used. B. graveolens essential oil turned out to be a potential product to control the growth of microorganisms isolated from K. audax, however, it should be tested against species of the genera Vibrio, Flavobacterium, Shewanella, Lactococcus and Streptococcus that cause spoiling of hydrobiological products.","PeriodicalId":21642,"journal":{"name":"Scientia Agropecuaria","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45011383","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}

引用次数: 0

Lupinus mutabilisoil obtained by expeller press: Yield, physicochemical characterization, antioxidant capacity, fatty acids and oxidative stability analyses 压榨制得的变形狼疮油:产率、理化性质、抗氧化能力、脂肪酸和氧化稳定性分析

IF 1.5

Scientia Agropecuaria Pub Date : 2021-06-01 DOI: 10.17268/SCI.AGROPECU.2021.025

Gloria Pascual-Chagman, Juan Santa-Cruz-Olivos, A. Hidalgo, Fernando Benavente, M. C. Pérez-Camino, Alejandrina Sotelo-Méndez, L. Paucar-Menacho, C. Encina-Zelada

{"title":"Lupinus mutabilisoil obtained by expeller press: Yield, physicochemical characterization, antioxidant capacity, fatty acids and oxidative stability analyses","authors":"Gloria Pascual-Chagman, Juan Santa-Cruz-Olivos, A. Hidalgo, Fernando Benavente, M. C. Pérez-Camino, Alejandrina Sotelo-Méndez, L. Paucar-Menacho, C. Encina-Zelada","doi":"10.17268/SCI.AGROPECU.2021.025","DOIUrl":"https://doi.org/10.17268/SCI.AGROPECU.2021.025","url":null,"abstract":"The oil of debittered and dehulled grains from two Andean lupins (Lupinus mutabilis) from Peru, Andenes and Común,was extracted by expeller press. The extraction yield and the proximal composition of both varieties were assessed. The oil and the cake, as well as the defatted flour from the variety with the highest extraction yield, werecharacterised for physico-chemical properties, total polyphenol content and antioxidant capacity. The oil shelf-life at 25 °C was extrapolated by Rancimat test. Andenes presented an oil yield of 22.1% (vs. 18.4% of Común),CIELAB colour coordinates of L* = 36.5, a* = 2.2, b* = 20, refractive index and density at 25ºC of 1.469 and 0.903 g/mL,acid number of 3.2 mg KOH/g, free fatty acids content of 1.6%, peroxide number of 2.7 meqO2/kg, p-anisidine number of 1.3, unsaponificable content of 58%, total antioxidant capacity 21.4 μmol TE/g and total polyphenol content of 7.0 mg AGE/100 g. The predominant fatty acid, tocopherol and phytosterol in the oil were oleic acid (56.2%), γ-tocopherol (555 mg/kg) and β-sitosterol (41900 mg/100 g), respectively. The oil shelf-life at 25 ºC was 2.7 years. The Lupinus mutabilis oil extracted by expeller presented an acceptable quality with a lower environmental negative impact than the oils obtained by solvent extraction.","PeriodicalId":21642,"journal":{"name":"Scientia Agropecuaria","volume":"12 1","pages":"219-227"},"PeriodicalIF":1.5,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45992264","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}

引用次数: 4

Fungi associated with necrosis of vascular bundles in organic banana crop: symptoms, isolation and identification, and integrated management alternatives 与有机香蕉作物维管束坏死相关的真菌：症状、分离和鉴定以及综合管理替代方案

IF 1.5

Scientia Agropecuaria Pub Date : 2021-06-01 DOI: 10.17268/SCI.AGROPECU.2021.028

R. Aguilar-Anccota, Cinthya Geraldine Arévalo-Quinde, Arturo Morales-Pizarro, Miguel Galecio-Julca

{"title":"Fungi associated with necrosis of vascular bundles in organic banana crop: symptoms, isolation and identification, and integrated management alternatives","authors":"R. Aguilar-Anccota, Cinthya Geraldine Arévalo-Quinde, Arturo Morales-Pizarro, Miguel Galecio-Julca","doi":"10.17268/SCI.AGROPECU.2021.028","DOIUrl":"https://doi.org/10.17268/SCI.AGROPECU.2021.028","url":null,"abstract":"The banana Musaspp. (Musaceae) is a tropical perennial crop of major consumption in the world, the main producing regions are; Asia (54.1%), America (25.5%), Africa (18.4%). In Peru, Piura accounts for 72% of the country's total volume of organic banana exports. In recent years in Peru and in other producing areas of the world, symptoms of necrosis in the vascular bundles of the pseudostem have been occurring, causing the early death of plants in production. The objective of this study was to identify the main fungal pathogens associated with vascular necrosis of banana. The fungi isolated from the pseudostem, rhizome and roots were identified using taxonomic keys. The external symptoms of the disease were yellowing and necrosis of the leaves from the edge towards the midrib, collapse of the petiole and death of the plant. The internal symptoms were necrosis of the vascular bundles and internal necrotic lesions in the rhizome and roots. The fungal isolates were identified by their morphometric characteristics as Fusarium oxysporum, F.verticillioidesand F.solani. For the control of this disease, it is recommended to implement an integrated management plan.","PeriodicalId":21642,"journal":{"name":"Scientia Agropecuaria","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47968287","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}

引用次数: 1

First report of Tanaostigmodessp. as the main pest of Caesalpinia spinosa: Morphological and biological aspects tanaostmoessp首次报道。主要害虫:形态和生物学方面

IF 1.5

Scientia Agropecuaria Pub Date : 2021-06-01 DOI: 10.17268/SCI.AGROPECU.2021.029

Hipólito Murga-Orrillo, Lenin Palomino-Rosillo, Sharmely Hilares-Vargas, Moises Aliaga-Pereyra, Alejandro Seminario-Cunya, Carlos Abanto-Rodríguez

{"title":"First report of Tanaostigmodessp. as the main pest of Caesalpinia spinosa: Morphological and biological aspects","authors":"Hipólito Murga-Orrillo, Lenin Palomino-Rosillo, Sharmely Hilares-Vargas, Moises Aliaga-Pereyra, Alejandro Seminario-Cunya, Carlos Abanto-Rodríguez","doi":"10.17268/SCI.AGROPECU.2021.029","DOIUrl":"https://doi.org/10.17268/SCI.AGROPECU.2021.029","url":null,"abstract":"The tara (Caesalpinia spinosa(Mol.) Kuntze) is a non-timber forest species whose pods are of economic importance to various industries; however, attacks by pests such as Tanaostigmodessp. the leaves and young stems decrease the production of this species. The aim of this study was to determine the morphological and biological characteristics of Tanaostigmodessp. and percentage of incidence in C. spinosa. 1399 insects were identified in which evaluations of the duration of the stages, the morphometry and the damage to the plant were carried out. The egg, larva, pupa and adult measure 0.2, 2.0, 2.1 and 2.0 to 2.3 mm long, last 13.1, 71.8, 20.6 and 10.1 days respectively,totaling its development cycle in 115.1 days; the larvae when feeding make mines in the rachis of the leaves and in young stems, reaching maximum attacks of up to 84.5% causing defoliation. Tanaostigmodessp. it is a major tare pest, with average attack records of 24.6% on leaves. Knowing its biological aspects and its interaction with tara phenology will allow the adoption of efficient strategies for its integrated management and control.","PeriodicalId":21642,"journal":{"name":"Scientia Agropecuaria","volume":"12 1","pages":"257-263"},"PeriodicalIF":1.5,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48492940","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}

引用次数: 0

Phenolic compounds of mango (Mangifera indica) by-products: Antioxidant and antimicrobial potential, use in disease prevention and food industry, methods of extraction and microencapsulation 芒果(Mangifera indica)副产品的酚类化合物:抗氧化和抗菌潜力，在疾病预防和食品工业中的应用，提取和微胶囊化方法

IF 1.5

Scientia Agropecuaria Pub Date : 2021-06-01 DOI: 10.17268/SCI.AGROPECU.2021.031

Vicente Amirpasha Tirado Kulieva, Sheyla Atoche-Dioses, Ernesto Hernández-Martínez

{"title":"Phenolic compounds of mango (Mangifera indica) by-products: Antioxidant and antimicrobial potential, use in disease prevention and food industry, methods of extraction and microencapsulation","authors":"Vicente Amirpasha Tirado Kulieva, Sheyla Atoche-Dioses, Ernesto Hernández-Martínez","doi":"10.17268/SCI.AGROPECU.2021.031","DOIUrl":"https://doi.org/10.17268/SCI.AGROPECU.2021.031","url":null,"abstract":"Globally, a large amount of agri-food waste is generated as a result of industrial processes or direct consumption of raw materials, and when discarded, they represent a factor of environmental pollution. Mango by-products have a great bioactive potential, especially because they contain phenolic compounds in which mangiferin predominates, in addition to a great variety of phenolic acids, flavonoids and tannins, which confer antioxidant effects against cancer, cardiovascular and neurological diseases, among others. In addition, it was demonstrated that they have an effect against a broad microbial spectrum, including multiple pathogenic bacteria and fungi such as Escherichia coli and Candida albicans, respectively. According to the literature, mango peel and seed extracts also have potential as an additive, by influencing the sensory and physicochemical characteristics of foods, which has been proven by their addition to products such as shrimp, yogurt and cookies. Considering the importance of mango by-products, this work focused on their phenolic properties, the mechanism of antioxidant and antimicrobial action, their fields of pharmacological and food applications, in addition to evaluating their extraction methods and proposing microencapsulation as a suitable technology to avoid their degradation and control their release under appropriate conditions. Based on the analysis performed, further studies are suggested on the application in different foods and to evaluate the interaction of polyphenols with the compounds of the product, to avoid possible negative effects. It is also recommended to experiment with the use of combined technologies to improve results during extraction and microencapsulation.","PeriodicalId":21642,"journal":{"name":"Scientia Agropecuaria","volume":"12 1","pages":"283-293"},"PeriodicalIF":1.5,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43508605","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}

引用次数: 14

Postharvest storage of three chayote (Sechium edule (Jacq.) Sw.) varieties 三株木瓜（Sechium edule（Jacq.）Sw.）采后贮藏品种

IF 1.5

Scientia Agropecuaria Pub Date : 2021-06-01 DOI: 10.17268/SCI.AGROPECU.2021.027

Y. Ramírez-Rodas, L. Arévalo-Galarza, J. Cadena-Iñiguez, A. Delgado-Alvarado, L. M. Ruíz-Posadas, M. Soto-Hernández

{"title":"Postharvest storage of three chayote (Sechium edule (Jacq.) Sw.) varieties","authors":"Y. Ramírez-Rodas, L. Arévalo-Galarza, J. Cadena-Iñiguez, A. Delgado-Alvarado, L. M. Ruíz-Posadas, M. Soto-Hernández","doi":"10.17268/SCI.AGROPECU.2021.027","DOIUrl":"https://doi.org/10.17268/SCI.AGROPECU.2021.027","url":null,"abstract":"The consumer demand for chayote (Sechium edule (Jacq.) Sw.) fruits has increased in recent years, virens levis being the most important variety, although other chayote varieties are gaining importance such as nigrum xalapensis and n. spinosum. However, the postharvest behavior of these varieties is different, so it is important to evaluate the factors that limit the shelf life of each variety. Therefore, in this study, fruits of each variety from the Mexican National Germplasm Bank of Sechium edule were used. The following fruit quality variables were evaluated: weight loss, humidity (%), color, chlorophyll, titratable acidity, total soluble solids (TSS), total sugars, and stomatal characteristics. In addition, the storage potential of each variety was evaluated for two weeks at different temperatures, 7°, 13° (85% RH) and 24 °C (60% RH), with the application of 1-methylcyclopropene (1-MCP). The variables evaluated were viviparism, disease severity, weight loss, dehydration and chilling injury (CI). The fruits of n. xalapensis and n. spinosum have a higher content of chlorophylls and carotenoids, but similar contents of TSS, acidity and total sugars than v. levis fruits. The use of 1-MCP reduced viviparism in all varieties, and the severity of blisters was higher in v. levis. The fruits of the three varieties presented severe CI when stored at 7 °C but the most susceptible to dehydration and diseases severity is n. spinosum.","PeriodicalId":21642,"journal":{"name":"Scientia Agropecuaria","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42323430","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}

引用次数: 4

Transplanting colonies of Cladophora crispatasusceptible to die to increase the available biomass: Strategy for sustainability and food security in Lake Titicaca 的的喀喀湖可持续性和粮食安全策略:移植易死的crispata菌落以增加可利用生物量

IF 1.5

Scientia Agropecuaria Pub Date : 2021-04-29 DOI: 10.17268/SCI.AGROPECU.2021.019

Á. Canales-Gutiérrez, Ivon Gutierrez-Flores

引用次数: 0

Estimation of arsenic contents in rice purchased on Peruvian markets and estimation of dietary intake by Peruvians through rice consumption 对秘鲁市场上购买的大米中砷含量的估计以及通过大米消费估算秘鲁人的膳食摄入量

IF 1.5

Scientia Agropecuaria Pub Date : 2021-04-29 DOI: 10.17268/SCI.AGROPECU.2021.021

Sonia Tatiana Zhunaula Guaman, Washington Coaquira Ccahua, N. Rafael, Ide Gelmore Unchupaico Payano, Julio Miguel Ángeles Suazo, A. Gioda, A. R. Cruz

{"title":"Estimation of arsenic contents in rice purchased on Peruvian markets and estimation of dietary intake by Peruvians through rice consumption","authors":"Sonia Tatiana Zhunaula Guaman, Washington Coaquira Ccahua, N. Rafael, Ide Gelmore Unchupaico Payano, Julio Miguel Ángeles Suazo, A. Gioda, A. R. Cruz","doi":"10.17268/SCI.AGROPECU.2021.021","DOIUrl":"https://doi.org/10.17268/SCI.AGROPECU.2021.021","url":null,"abstract":"Rice ( Oryza sativa L ) is an important source of essential elements but also can contain high As concentrations, which may be consumed and causes health effects. This work aimed to contribute to the lack of information quantifying the total arsenic ( t As) in 31 domestic rice (white rice, n=19; brown rice, n=7; parboiled rice, n=5) of different brands purchased in Peruvian markets. The t As content was conducted by ICP-MS. The tAs concentration was compared to the maximum limits prescribed by regulatory agencies. Dietary intake (DI), dietary exposure (DE), and margin of exposure (MOE) were estimated. tAs concentration in white, brown and parboiled rice were 0.292 ± 0.106 mg/kg, 0.401 ± 0.081 mg/kg, 0.229 ± 0.03 mg/kg, respectively. Arsenic concentration in white rice exceeded limits recommended by FAO/WHO (0.20 mg kg -1 ), and European legislation (0.25 mg kg -1 ), but no Mercosul limits (0.3 mg kg -1 ). The DE showed that, on average, Peruvians consume 5.60 μ g As kg-1 BW weekly. The MOE value was higher than 1 at the mean dietary exposure level. Our findings suggest that the health risk from dietary arsenic exposure is low for the Peruvian population. However, more studies are needed to reduce dietary arsenic exposure in Peru. Estimation of arsenic contents in rice purchased on Peruvian markets and estimation of dietary intake by Peruvians through rice consumption. Scientia Agropecuaria, 12 (2), 185-191.","PeriodicalId":21642,"journal":{"name":"Scientia Agropecuaria","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49463532","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}

引用次数: 3