Revista Facultad Nacional de Agronomia Medellin最新文献_第2页

Delimitación automática y análisis morfométrico de cuencas y subcuencas usando un conjunto digital de datos de elevación en la jurisdicción de Cornare, Antioquia, Colombia 哥伦比亚安蒂奥基亚省科纳雷地区使用数字高程数据集的流域和子流域的自动划界和形态测量分析

Revista Facultad Nacional de Agronomia Medellin Pub Date : 2022-09-01 DOI: 10.15446/rfnam.v75n3.100663

Astrid Elena Pérez López, Valdinar Ferreira Melo, Elpídio Inácio Fernandes Filho, Marcio Rocha Francelino

{"title":"Delimitación automática y análisis morfométrico de cuencas y subcuencas usando un conjunto digital de datos de elevación en la jurisdicción de Cornare, Antioquia, Colombia","authors":"Astrid Elena Pérez López, Valdinar Ferreira Melo, Elpídio Inácio Fernandes Filho, Marcio Rocha Francelino","doi":"10.15446/rfnam.v75n3.100663","DOIUrl":"https://doi.org/10.15446/rfnam.v75n3.100663","url":null,"abstract":"Los parámetros hidrológicos y morfométricos de una cuenca constituyen estimaciones que deben realizarse sobre un mapa con suficiente información. La recopilación de esta in situ se ha visto limitada por problemas de orden público. Entre los índices morfométricos de una cuenca se encuentra el índice de circularidad (Ic), que hasta el momento no ha sido calculado para las cuencas en estudio. La delimitación automática de cuencas realizada a partir de Sistemas de Información Geográfica (SIG), ha permitido la investigación y manejo de las mismas debido a la eficiencia en el procesamiento de datos, facilidad y bajo costo, además de la creciente disponibilidad de imágenes y bases de datos. El objetivo de este trabajo fue evaluar la metodología propuesta para utilizar el Modelo Digital de Elevación (MDE) SRTM de la jurisdicción de la Corporación Autónoma Regional de las Cuencas de los Ríos Negro y Nare (Cornare) y extraer de este el drenaje numérico, para delimitar cuencas y subcuencas, así como calcular índices, tales como densidad de drenaje (Dd) e Ic. El mapa de declividad mostró terrenos con relieve muy suave a muy fuerte. La delimitación automática de cuencas con base en el orden de drenaje ≥ 6 fue la que más se acercó a la realidad; en cuanto a la delimitación de subcuencas, fue aquella con base en el orden ≥3. Los índices Dd e Ic, indicaron que las subcuencas tienen drenaje, nivel de escorrentía y capacidad de infiltración moderados y tienden a ser más alargadas que circulares.","PeriodicalId":37747,"journal":{"name":"Revista Facultad Nacional de Agronomia Medellin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73568096","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

Chemical and structural changes of ocote pine (Pinus oocarpa) wood caused by thermal modification 热改性对山地松(Pinus oocarpa)木材化学和结构的影响

Revista Facultad Nacional de Agronomia Medellin Pub Date : 2022-05-01 DOI: 10.15446/rfnam.v75n2.97576

Jhon Fredy Herrera Builes, Jairo Alexander Osorio Saráz, Victor Andrés Sepúlveda Villarroel, Rubén Andrés Ananías Abuter

{"title":"Chemical and structural changes of ocote pine (Pinus oocarpa) wood caused by thermal modification","authors":"Jhon Fredy Herrera Builes, Jairo Alexander Osorio Saráz, Victor Andrés Sepúlveda Villarroel, Rubén Andrés Ananías Abuter","doi":"10.15446/rfnam.v75n2.97576","DOIUrl":"https://doi.org/10.15446/rfnam.v75n2.97576","url":null,"abstract":"Thermal modifications alter the physical properties and improve the natural durability of wood without using chemical impregnation processes being an environmentally friendly alternative; these improvements could be made due to changes in the internal wood structure. In this investigation, changes caused to the chemical composition and microstructure of wood Pinus oocarpa by thermal modification at 170 and 190 °C were evaluated. The thermal treatment was carried out in a prototype chamber operated during the modification steps under a steam atmosphere, with a continuous flow without pressure. The evaluation of chemical changes was performed following the TAPPI standards. Using Fourier transform infrared spectroscopy (FTIR) and optical microscopy, the wood microstructure was characterized. The results showed a decrease in holocellulose contents by 7% at 170 °C and by 9% at 190 °C; lignin contents increased at 170 °C (6%) and at 190 °C (8%) and extractives were increased by 8% (170 °C) and 13% (190 °C); the changes obtained by the spectra were related to the C-H deformation in cellulose and hemicelluloses and the complex bonds of lignin carbohydrates of the -CH3 (lignin) and CH2 (carbohydrates) groups and organic acids released during thermal modification. Thickness of tracheid walls decreased in earlywood 8% (170 °C) and 22% (190 °C) and in latewood 11% (170 °C) and 14% (190 °C); lumen diameters increased in earlywood to 170 °C (14%) and 190 °C (48%) and in latewood in 14% (170 °C) an in 20% (190 °C). At 190 °C, the cell alterations were higher. Pinus oocarpa was thermally modified at 170 °C showing better wood quality in its internal structure.","PeriodicalId":37747,"journal":{"name":"Revista Facultad Nacional de Agronomia Medellin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76088815","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

Physiological adaptation indicators of three Colombian Creole cattle breeds 三个哥伦比亚克里奥尔牛品种的生理适应指标

Revista Facultad Nacional de Agronomia Medellin Pub Date : 2022-05-01 DOI: 10.15446/rfnam.v75n2.95718

Zoilo Andrés Correa-García, Rómulo Campos Gaona, H. Flórez-Díaz

{"title":"Physiological adaptation indicators of three Colombian Creole cattle breeds","authors":"Zoilo Andrés Correa-García, Rómulo Campos Gaona, H. Flórez-Díaz","doi":"10.15446/rfnam.v75n2.95718","DOIUrl":"https://doi.org/10.15446/rfnam.v75n2.95718","url":null,"abstract":"The present study aimed to determine the physiological response and its relationship with the caloric impact (stress) index of three breeds of Colombian Creole cattle (Hartón del Valle, Blanco Orejinegro y Sanmartinero). These breeds have been considered adapted to low-tropical conditions and important to the sustainable meat and milk production in Colombia. To determine two heat tolerance indexes and two hormones and their relationship to the physiological response to heat stress in three Colombian Creole cattle breeds, Pearson’s correlation methodology and mean comparison study were used. The adaptability indexes such as temperature-humidity index (ITH) and heat load index (HLI) and cortisol and T3 hormones were estimated and subsequently, the indexes were correlated with the hormones using the Pearson methodology, also the mean comparison study was used. Physiological variables were analyzed such as heart rate, respiratory rate, rumen patterns, and rectal temperature; during the study, serum concentrations of cortisol and triiodothyronine hormones were detected in seven different instances during the rainy season in the Piedemonte Llanero. ITH and HLI were used as indicators of thermal compensation. The HLI appeared to be a better indicator when the environmental conditions included wind speed and solar radiation. No variations were found between the breeds (P≥0.05), while the measurement periods did show variations (P≤0.05). It may conclude that the HLI provides better information to study physiological parameters and it may confirm that the animals are considered adapted to the conditions of the local environment.","PeriodicalId":37747,"journal":{"name":"Revista Facultad Nacional de Agronomia Medellin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77483960","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

Antimicrobial potential of camu camu (Myrciaria dubia) against bacteria, yeasts, and parasitic protozoa: a review camu camu (Myrciaria dubia)对细菌、酵母和寄生原生动物的抗菌潜力:综述

Revista Facultad Nacional de Agronomia Medellin Pub Date : 2022-05-01 DOI: 10.15446/rfnam.v75n2.98010

Juan Carlos Barrios Renteria, Enrique Alonso Mauricio-Sandoval, Luis Alfredo Espinoza- Espinoza, H. P. Cornelio-Santiago, L. A. Moreno-Quispe, Edwin Jorge Vega Portalatino

{"title":"Antimicrobial potential of camu camu (Myrciaria dubia) against bacteria, yeasts, and parasitic protozoa: a review","authors":"Juan Carlos Barrios Renteria, Enrique Alonso Mauricio-Sandoval, Luis Alfredo Espinoza- Espinoza, H. P. Cornelio-Santiago, L. A. Moreno-Quispe, Edwin Jorge Vega Portalatino","doi":"10.15446/rfnam.v75n2.98010","DOIUrl":"https://doi.org/10.15446/rfnam.v75n2.98010","url":null,"abstract":"Some microorganisms are responsible for food spoilage and foodborne infections worldwide. These microorganisms are becoming increasingly resistant to degradation or inhibition due to exposure to antibiotics, antifungal, and antiparasitics, posing a growing threat to human health. The aim of this study was to describe the antimicrobial properties of compounds present in Myrciaria dubia (pulp, seed, peel, and leaves) against bacteria (Staphylococcus spp., Escherichia coli, Salmonella and others), yeasts (Candida albicans and Saccharomyces cerevisiae) and parasitic protozoa (Leishmania amazonensis and Plasmodium falciparum). Different papers published in the main databases (Scopus, ScienceDirect, PubMed, Wiley Online Library, as well as in university repositories) were reviewed. These results were analyzed and organized according to their inhibitory activity, attributable metabolic actions of this plant, mainly based on its phenolic compounds present (rhodomyrtone, isomyrtucommulone B, myrciarone B, trans-resveratrol, 2.4-dihydroxybenzoic acid, myricetin, syringic, ellagic acid and casuarictin), which can inhibit the synthesis or destabilize the microbial membrane, nucleic acids, cell walls in bacteria and mitochondrial dysfunction in protozoa","PeriodicalId":37747,"journal":{"name":"Revista Facultad Nacional de Agronomia Medellin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85740216","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

Influence of fertilization on the crop rotation productivity and the balance of essential nutrients in the soil 施肥对作物轮作生产力及土壤必需养分平衡的影响

Revista Facultad Nacional de Agronomia Medellin Pub Date : 2022-05-01 DOI: 10.15446/rfnam.v75n2.98290

H. Hospodarenko, V. Liubych, O. Oliinyk, I. Polianetska, T. Silifonov

{"title":"Influence of fertilization on the crop rotation productivity and the balance of essential nutrients in the soil","authors":"H. Hospodarenko, V. Liubych, O. Oliinyk, I. Polianetska, T. Silifonov","doi":"10.15446/rfnam.v75n2.98290","DOIUrl":"https://doi.org/10.15446/rfnam.v75n2.98290","url":null,"abstract":"The article shows the influence of different rates and combinations of mineral fertilizers on the balance of essential nutrients in the four-field crop rotation (winter wheat, corn, spring barley, and soybean) during eight years in the context of incorporation into the soil or removal of a non-commercial part of the yield of the field. The stationary field experiment was performed on the black podzolized heavy loamy soil of the Right-Bank Forest-Steppe. The experiment scheme included 11 variants of combinations and separate applications of mineral fertilizers as well as control variants without fertilization. It has been established that in the annual removal of nutrients together with grain harvest nitrogen makes up the biggest share (64.4–149.9 kg hа-1), then phosphorus – 21.1–51.4 kg hа-1 depending on the fertilizing in the crop rotation. The variant of the experiment N110P60K40 provides the optimal intensity of the balance of nitrogen, phosphorus, and potassium (103, 122, and 111%, respectively) when a non- marketable part of the yield is left for fertilizing in the field. When this part of the yield is removed from the field there is a deficit balance of nitrogen, phosphorus, and potassium with the intensity (76, 76, 61%, respectively) even in the variant with the annual average application of N110P60K80. The use of non-marketable agricultural products in crop rotation for fertilization and the average annual application of N110P30–60K40–80 allows compensation for the losses of nitrogen 24%, phosphorus 33%, and potassium 71%","PeriodicalId":37747,"journal":{"name":"Revista Facultad Nacional de Agronomia Medellin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89402238","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

Influence of soil cover and herbicide application on weed control and corn yield 土壤覆盖和除草剂施用对杂草控制和玉米产量的影响

Revista Facultad Nacional de Agronomia Medellin Pub Date : 2022-05-01 DOI: 10.15446/rfnam.v75n2.96339

E. Rüdell, Dieferson Frandaloso, Bianca Antoniolli Zanrosso, F. Santos, Maria Antônia Rossatto Novelli

{"title":"Influence of soil cover and herbicide application on weed control and corn yield","authors":"E. Rüdell, Dieferson Frandaloso, Bianca Antoniolli Zanrosso, F. Santos, Maria Antônia Rossatto Novelli","doi":"10.15446/rfnam.v75n2.96339","DOIUrl":"https://doi.org/10.15446/rfnam.v75n2.96339","url":null,"abstract":"Crop management and herbicide rotation have influenced the sustainability of production systems. The cover crops use and pre-and post-emergence herbicides are important tools that help farmers’ strategies and conserve the agricultural system. In this context, the objective of this research was to evaluate the dry matter production of different cover crops before the establishment of corn, the effect on decreasing weed population, and the increase in corn yield. In addition, the influence of pre-and post-emergence herbicides on summer cultivation, observing the behavior concerning weeds, crop injury, and crop yield. The experiment was conducted during the years 2018-2019 in Sertão/RS - Brazil. The experimental arrangement was of randomized blocks with four replications. The treatments used were three different winter cover crops preceding corn cultivation × four preemergence herbicides × four post-emergence herbicides, totaling 192 experimental units. Going through the results, atrazine and atrazine + simazine used in pre-emergence had more influence on weed number reduction, and the post-emergence ammonium glufosinate herbicide promoted the highest weed control in post-emergence. Amicarbazone and glyphosate resulted in the best combination for corn yield using in pre-and post-emergence, respectively. Rye + turnip + vetch as cover crop resulted in higher biomass production, more significant weed number reduction, and increase corn yield.","PeriodicalId":37747,"journal":{"name":"Revista Facultad Nacional de Agronomia Medellin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88755481","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

Effectiveness of postharvest calcium salts applications to improve shelf-life and maintain apricot fruit quality during storage 采后钙盐对提高杏果实贮藏期和保持果实品质的效果

Revista Facultad Nacional de Agronomia Medellin Pub Date : 2022-05-01 DOI: 10.15446/rfnam.v75n2.98060

Maryam Dorostkar, F. Moradinezhad, E. Ansarifar

{"title":"Effectiveness of postharvest calcium salts applications to improve shelf-life and maintain apricot fruit quality during storage","authors":"Maryam Dorostkar, F. Moradinezhad, E. Ansarifar","doi":"10.15446/rfnam.v75n2.98060","DOIUrl":"https://doi.org/10.15446/rfnam.v75n2.98060","url":null,"abstract":"Fresh apricot is a nutritious and popular fruit because of its special aroma and taste. However, high ripening rates and susceptibility to mechanical injury and postharvest diseases limit its shelf life. Therefore, the effect of immersion in different calcium salts solution on the qualitative and biochemical characteristics of fresh apricot fruit ʻShahroudi’ cv was evaluated. Treatments were solutions of calcium chloride (CaCl2), calcium nitrate Ca(NO3)2, and calcium sulfate (CaSO₄) at a concentration of 1 or 2%. Distilled water was used as a control. Fruits were immersed in water or calcium salts solution for 2 min, air-dried, and then stored at 2±1 °C for three weeks. However, the highest firmness was related to 2% CaCl2 treatment, which was about 60% higher than control, followed by 1% Ca(NO3)2 treatment (50% more than control). Also, the lowest Total Soluble Solids value was 10.46%, which was obtained from 2% CaCl2 and the highest value was obtained in control (15.1%). Besides, the mentioned treatments improved the nutritional value of apricot fruit by increasing total phenolic compounds, and tissue calcium content. The shelf life was 15.67 days in control, while 2% CaCl2 treatment doubled (35.33 days) the shelf life of apricot fruit. In general, the best result was obtained using CaCl2 at 2% treatment for 2 min, which may be applied as a postharvest treatment to improve the storage life of apricot fruit ʻShahroudi’ cv.","PeriodicalId":37747,"journal":{"name":"Revista Facultad Nacional de Agronomia Medellin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81161587","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

Improvement of productive and metabolic indicators of broiler by the application of Lippia origanoides essential oil in an in vivo intestinal inflammation model 在体内肠道炎症模型中应用牛油对肉鸡生产和代谢指标的改善

Revista Facultad Nacional de Agronomia Medellin Pub Date : 2022-05-01 DOI: 10.15446/rfnam.v75n2.98305

Tomás Antonio Madrid Garcés, Luis Gabriel González Herrera, Albeiro López Herrera, Jaime Parra Suescun

{"title":"Improvement of productive and metabolic indicators of broiler by the application of Lippia origanoides essential oil in an in vivo intestinal inflammation model","authors":"Tomás Antonio Madrid Garcés, Luis Gabriel González Herrera, Albeiro López Herrera, Jaime Parra Suescun","doi":"10.15446/rfnam.v75n2.98305","DOIUrl":"https://doi.org/10.15446/rfnam.v75n2.98305","url":null,"abstract":"Broiler meat is the animal origin protein source with the highest nutritional quality, growth, and projection in the last decade. However, the presence of traces of antimicrobials in the final products, mainly due to the indiscriminate addition of antibiotics (prophylactic use) as growth-promoters antibiotics (GPA) has raised major concerns. In the search for viable alternatives, natural additives such as essential oils appear, among which the oregano (OEO-Lippia origanoides) stands out. It has been used with success at an industrial level and its antimicrobial properties are well known. The current study aimed to evaluate the zootechnical parameters (accumulated weight gain, feed conversion, and feed efficiency) and blood metabolites (Alanine aminotransferase, glucose, cholesterol, triglycerides, creatinine, phosphorous, calcium) in broilers adding OEO into their diet in an in vivo inflammation model achieved by adding Lipopolysaccharides (LPS) from E. coli. 1200 animals were distributed in six diets: D1: basal diet (control) or balanced commercial diet without the addition of GPA, OEO, and LPS; D2: D1+150 ppm GPA (Avilamycin); D3: D1+150 ppm OEO (Lippia Origanoides); D4: D1+1.0 ppm LPS; D5: D1+1.0 ppm LPS+150 ppm GPA; D6: D1+1.0 ppm LPS+150 ppm OEO. The trial was carried out under a randomized block design. OEO-Lippia origanoides improved the zootechnical and metabolic variables (P<0.05) of birds in the face of in vivo inflammation at different ages; furthermore, it improved the animal response and the metabolic conditions of the animals under study. The zootechnical and blood metabolites results at different ages evidenced the technical feasibility of OEO as a nutritional growth promoter.","PeriodicalId":37747,"journal":{"name":"Revista Facultad Nacional de Agronomia Medellin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72655086","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

Forage quality in a neotropical savanna based on different types of fertilization 不同施肥方式对新热带稀树草原牧草质量的影响

Revista Facultad Nacional de Agronomia Medellin Pub Date : 2022-05-01 DOI: 10.15446/rfnam.v75n2.96791

Elizabeth del Carmen Ramirez Iglesias, Zenaida Lozano-Pérez, R. M. Hernández-Hernández, J. R. Ramírez-Iglesias

{"title":"Forage quality in a neotropical savanna based on different types of fertilization","authors":"Elizabeth del Carmen Ramirez Iglesias, Zenaida Lozano-Pérez, R. M. Hernández-Hernández, J. R. Ramírez-Iglesias","doi":"10.15446/rfnam.v75n2.96791","DOIUrl":"https://doi.org/10.15446/rfnam.v75n2.96791","url":null,"abstract":"The application of different sources of nutrients to the soil with varying degrees of solubility, as well as the use of organic and inorganic fertilizers, can generate different responses in agroecosystems. The objective of this study was to evaluate the effect of different fertilization options on the quality of forage in the conservation-based agroecosystems of neotropical savannas. Both perennial species Brachiaria dictyoneura and the legume Centrosema macrocarpum are associated with corn cultivation. Four fertilization treatments were evaluated within each cover crop, applying 150 kg ha-1 of nitrogen, 150 kg ha-1 of P2O5, 100 kg ha-1 of K2O, and varying the source of phosphorus, being the treatments distributed as follows: i) phosphoric rock, high dose of phosphorus (100% of P2O5 as phosphoric rock), ii) diammonium phosphate, high dose of P (50% of P2O5 as phosphoric rock and 50% as diammonium phosphate), iii) biological fertilization, low dose of P (25% of P2O5 as phosphoric rock and inoculation with biofertilizer based on native arbuscular mycorrhizal fungi, such as Gigaspora, Scutellospora, Acaulospora, and Glomus), and finally, iv) the unfertilized treatment. The results show that under direct sowing and the use of biological fertilization sources using phosphoric rock as a source of P, similar and even higher levels of raw protein can be reached than when using fertilization with soluble sources such as the diammonium phosphate, which induce greater sustainability of the cover biomass, being an alternative in the management of this types of agroecosystems.","PeriodicalId":37747,"journal":{"name":"Revista Facultad Nacional de Agronomia Medellin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77500620","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

Effect of integrated plant nutrient management on indicators related to yield and productivity of spring barley (Hordéum vulgáre) under drought conditions in the growing season 干旱条件下植物营养综合管理对春大麦(hord<s:1> vulgáre)产量和生产力相关指标的影响

Revista Facultad Nacional de Agronomia Medellin Pub Date : 2022-05-01 DOI: 10.15446/rfnam.v75n2.97384

Yevheniia Hladkikh, Olesia Sіabruk, A. Revtie-Uvarova, V. Smychenko

{"title":"Effect of integrated plant nutrient management on indicators related to yield and productivity of spring barley (Hordéum vulgáre) under drought conditions in the growing season","authors":"Yevheniia Hladkikh, Olesia Sіabruk, A. Revtie-Uvarova, V. Smychenko","doi":"10.15446/rfnam.v75n2.97384","DOIUrl":"https://doi.org/10.15446/rfnam.v75n2.97384","url":null,"abstract":"The agricultural production of the world is becoming increasingly vulnerable to extreme weather conditions, but adaptation to such conditions still suffers from a lack of integrated solutions and approaches that should cover relevant plant nutrition management issues, as well as technological mechanisms and tools. This study aimed to investigate the impact of fertilizer systems on yield indicators and the productivity of spring barley under arid growing conditions and determine the correlation between yield indicators and barley productivity to form a fertilization strategy for this crop under drought conditions. Two separate field experiments were conducted in 2018 in a small plot in six replications based on a long-term research field experiment on chernozem-type soil (black soil). As components of an integrated plant nutrient management system, the combined application of mineral fertilizers and stress protectors was used (for seed inoculation and foliar treatment), as well as the local application of mineral fertilizers at different depths (10-12 cm, 20-22 cm and at two depths simultaneously). The application of components of an integrated plant nutrient management system increased the chlorophyll content, leaf water content, and grain yield. These benefits of integrated fertilizer management led to significant improvement in grain yield. The maximum values of this indicator were noted for foliar treatment of plants by a stress protector at a rate of 1.0 L ha-1 (once per growing season) or 0.5 L ha-1 (twice per growing season) and for deep localization of mineral fertilizers (to a depth of 20-22 cm). The content of chlorophyll and bound water in the tissues of barley plants can be used as an indicator to determine the resistance of plants to arid growing conditions since these physiological characteristics are closely correlated with the yield of barley.","PeriodicalId":37747,"journal":{"name":"Revista Facultad Nacional de Agronomia Medellin","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88999388","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