Agronomia Colombiana最新文献_第4页

Mineral nutrient content of soil and roots of Solanum paniculatum L. 龙葵土壤和根系的矿质营养含量。

Agronomia Colombiana Pub Date : 2022-12-16 DOI: 10.15446/agron.colomb.v40n3.101989

引用次数: 0

Spectral behavior of banana with Foc R1 infection: Analysis of Williams and Gros Michel clones 感染Foc-R1的香蕉的光谱行为：Williams和Gros-Michel无性系的分析

Agronomia Colombiana Pub Date : 2022-12-13 DOI: 10.15446/agron.colomb.v40n3.103969

Estefania Macías-Echeverri, L. Hoyos-Carvajal, V. Botero-Fernández, Sebastián Zapata-Henao, Juan Carlos Marín-Ortiz

{"title":"Spectral behavior of banana with Foc R1 infection: Analysis of Williams and Gros Michel clones","authors":"Estefania Macías-Echeverri, L. Hoyos-Carvajal, V. Botero-Fernández, Sebastián Zapata-Henao, Juan Carlos Marín-Ortiz","doi":"10.15446/agron.colomb.v40n3.103969","DOIUrl":"https://doi.org/10.15446/agron.colomb.v40n3.103969","url":null,"abstract":"Fusarium wilt is the greatest threat to Musaceae production worldwide; remote sensing techniques based on reflectance spectroscopy are proposed for its detection. The spectral response of leaves of healthy plants and plants infected with Fusarium oxysporum f. sp. cubense Race1 (Foc R1) from two banana cultivars during the incubation period of the disease were characterized. Spectra of 400-1000 nm were measured in healthy and Foc R1-infected plants on Gros Michel (GM: susceptible) and Williams (W: resistant) bananas with an Ocean Optics HR2000+ portable spectrometer. Similar general patterns were obtained in the spectra for both cultivars for the Vis, around 25% in the green region, but, as the foliar development progressed, reflectance decreased throughout the entire spectral range, close to 12.5% (green region of Vis range) on leaf 4 of both. Four wavelengths were discriminant for the healthy plants in the cultivars. Additionally, reflectance increased in the infected plants in the incubation period throughout the range, decreasing rapidly once the first visible symptoms appeared. The results suggested that an increase in reflectance at discriminating wavelengths can be used to diagnose diseased plants in the asymptomatic period, and a rapid decrease in this suggests the onset of the symptomatic phase.","PeriodicalId":38464,"journal":{"name":"Agronomia Colombiana","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48735705","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

Population density of aphids in chrysanthemums grown under photoselective screens 光选择屏下菊花蚜虫种群密度的研究

Agronomia Colombiana Pub Date : 2022-12-12 DOI: 10.15446/agron.colomb.v40n3.103742

{"title":"Population density of aphids in chrysanthemums grown under photoselective screens","authors":"","doi":"10.15446/agron.colomb.v40n3.103742","DOIUrl":"https://doi.org/10.15446/agron.colomb.v40n3.103742","url":null,"abstract":"The chrysanthemum is one of the main ornamental species in the world. It has great relevance in the market. Aphids are the main pests that affect the chrysanthemum crop and cause various types of damage to this plant. The objective of this study was to evaluate the influence of different cropping systems using photoselective screens on the population density of aphids in cut chrysanthemum. The study was carried out in an experimental area of the Federal Institute of Espírito Santo – Campus Itapina (Brazil) in a randomized complete block design, according to the split-plot scheme over time. The experiment was established in 3 blocks of 12 m in length with plots of 3 m containing different photoselective screens (red, silver, and black) and the control treatment (open field). Repeated evaluations at different times were done at 0, 15, 30, 45, and 60 d. Data were checked for normality and homoscedasticity and submitted to the Tukey’s test (P<0.05) and a non-parametric method of smoothing a dispersion graph with local weight (LOESS regression). Regardless of the color of the photoselective screen, there was a lower incidence of aphids compared to the open field treatment in the chrysanthemum culture with an average reduction of 84%. For the different sampling times, the Tukey test did not show significant differences between the means of aphid incidence in the evaluated period. Black, red, and silver photoselective screens promoted significant reductions in aphid populations in chrysanthemums of the variety Zembla in the environmental conditions of southeastern Brazil.","PeriodicalId":38464,"journal":{"name":"Agronomia Colombiana","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48297531","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

Intellectual property on the design of genetically modified tobacco containing a phaC gene for peroxisomal biosynthesis of polyhydroxyalkanoates 含有聚羟基烷酸过氧化物酶体生物合成phaC基因的转基因烟草设计的知识产权

Agronomia Colombiana Pub Date : 2022-12-03 DOI: 10.15446/agron.colomb.v40n3.102306

D. Portela, Fabián Villamil-Bolaños, F. Sarmiento, A. Chaparro-Giraldo, S. López-Pazos

引用次数: 0

Fitting growth curves of coffee plants in the nursery stage of growth: A functional approach 咖啡幼苗生长曲线的函数拟合

Agronomia Colombiana Pub Date : 2022-11-09 DOI: 10.15446/agron.colomb.v40n3.101333

Andrés Felipe León-Burgos, Carlos Ramírez, José Raúl Rendón Sáenz, Luis Carlos Imbachi-Quinchua, Carlos Andrés Unigarro-Muñoz, H. E. Balaguera-López

{"title":"Fitting growth curves of coffee plants in the nursery stage of growth: A functional approach","authors":"Andrés Felipe León-Burgos, Carlos Ramírez, José Raúl Rendón Sáenz, Luis Carlos Imbachi-Quinchua, Carlos Andrés Unigarro-Muñoz, H. E. Balaguera-López","doi":"10.15446/agron.colomb.v40n3.101333","DOIUrl":"https://doi.org/10.15446/agron.colomb.v40n3.101333","url":null,"abstract":"The growth patterns of coffee plants are determined by interactions between genetic, physiological, and climate factors. The objective of this study was to evaluate the growth patterns of coffee plants in the nursery under the climatic conditions of Chinchiná, Caldas, Colombia, during the first semester of 2019. Measurements were carried out in the Cenicafé 1 variety during six months. Growth parameters such as leaf area, number of leaves, height, stem diameter, and length of the main root were evaluated every 15 d after transplanting (DAT) in 20 plants and the averages of absolute growth (Ĝ) rate of each growth variable were calculated. For the total leaf area, total number of leaves, and stem height, a sigmoidal-type growth curve was adjusted, while the growth curve was linear for the stem diameter (R2 = 0.97) and main root length (R2 = 0.95). Average values were obtained for 520 cm2 for total leaf area, with an Ĝ of 3.31 cm2 d-1, 11 for total leaves (Ĝ 0.055 leaves d-1), 30.23 cm for height (Ĝ 0.155 cm d-1), 4.87 mm for stem diameter (Ĝ 0.199 mm d-1), and 28.80 cm for main root length (Ĝ 0.087 cm d-1) at 180 DAT. These results suggest that growth curves could be a useful tool for describing the growth patterns of coffee seedlings during the nursery stage of growth.","PeriodicalId":38464,"journal":{"name":"Agronomia Colombiana","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46957739","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

Warming reduces the root density and wheat colonization by arbuscular mycorrhizal fungi in the Yaqui Valley, Mexico 在墨西哥雅基山谷，变暖降低了根密度和丛枝菌根真菌的小麦定植

Agronomia Colombiana Pub Date : 2022-11-09 DOI: 10.15446/agron.colomb.v40n3.102857

O. Peñuelas-Rubio, Leandris Argentel-Martínez, José Aurelio Leyva Ponce, J. García-Urías, J. Garatuza‐Payán, E. Yépez, M. Hasanuzzaman, J. González Aguilera

引用次数: 0

The oil palm cadastre in Colombia 哥伦比亚的油棕地籍

Agronomia Colombiana Pub Date : 2022-08-31 DOI: 10.15446/agron.colomb.v40n2.98801

Victor Orlando Rincón-Romero, Angie Molina-Villarreal, Andrea Zabala-Quimbayo, Osmar Ricardo Barrera-Agudelo, Jorge Luís Torres-León

引用次数: 0

Use of reduced Bokashi doses is similar to NPK fertilization in iceberg lettuce production 在卷心莴苣生产中使用减少的Bokashi剂量与氮磷钾施肥相似

Agronomia Colombiana Pub Date : 2022-08-31 DOI: 10.15446/agron.colomb.v40n2.102900

Danilo Pezzoto de Lima, Gustavo Adolfo de Freitas Fregonezi, F. Hata, M. U. Ventura, J. Resende, C. D. S. Wanderley, A. Figueiredo

{"title":"Use of reduced Bokashi doses is similar to NPK fertilization in iceberg lettuce production","authors":"Danilo Pezzoto de Lima, Gustavo Adolfo de Freitas Fregonezi, F. Hata, M. U. Ventura, J. Resende, C. D. S. Wanderley, A. Figueiredo","doi":"10.15446/agron.colomb.v40n2.102900","DOIUrl":"https://doi.org/10.15446/agron.colomb.v40n2.102900","url":null,"abstract":"The aim of the study was to compare horticultural variables of iceberg lettuce using two Bokashi compost doses, alone and in combination, with the bioactivator Penergetic (Penergetic International AG®) against standard mineral fertilization (NPK) in three crop cycles. Experiments were conducted in a plastic greenhouse at the Universidade Estadual de Londrina, Brazil (548 m a.s.l.). The treatments were: negative control (water, only); positive control (NPK, 4-14-8); Penergetic alone; Bokashi doses 5 g and 10 g/plant with or without a combination with Penergetic. Lettuce plants were grown in pots filled with soil. Commercial biomass (CM), head diameter (HD), plant height (PH) and chlorophyll index (CI) were evaluated. In the three cycles tested, the Bokashi 10 g/plant, Bokashi 10 g/plant + Penergetic, and NPK treatments surpassed the control. The studied variables (CM, HD, PH and CI) in the lower Bokashi dose treatment were also higher than controls but lower than higher Bokashi doses and NPK. Penergetic increases the CM in the lower Bokashi dose treatment just in the first production cycle, probably due to the poor organic matter content in the soil. The treatment Bokashi 10 g/plant improved significantly the lettuce horticultural variables vs. control treatments and was similar to chemical fertilization in two or three crop cycles.","PeriodicalId":38464,"journal":{"name":"Agronomia Colombiana","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42883943","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

Efficiency of herbicides for weed control in chickpea and effect of their residues on wheat growth 除草剂防治鹰嘴豆杂草的效果及其残留对小麦生长的影响

Agronomia Colombiana Pub Date : 2022-08-31 DOI: 10.15446/agron.colomb.v40n2.101580

S. Babaei, Sahar Lahooni, Sayed Karim Mousavi, I. Tahmasebi, Payman Sabeti, A. Abdulahi

{"title":"Efficiency of herbicides for weed control in chickpea and effect of their residues on wheat growth","authors":"S. Babaei, Sahar Lahooni, Sayed Karim Mousavi, I. Tahmasebi, Payman Sabeti, A. Abdulahi","doi":"10.15446/agron.colomb.v40n2.101580","DOIUrl":"https://doi.org/10.15446/agron.colomb.v40n2.101580","url":null,"abstract":"In order to determine the best time to use and the adequate dose of four herbicides to control weeds in dryland chickpea (Cicer arietinum L.) fields, we performed the present experiment in 4 x 5 m plots. Fourteen treatments were carried out that from 1 to 9 included trifluralin. Treatments 1, 2, and 3 were with increasing doses of trifluralin (480, 720, and 960 g ai ha-1) applied 30 days before planting. Treatments 4, 5, and 6 included increasing doses of trifluralin (480, 720, and 960 g ai ha-1) applied 15 days before planting. Treatments 7, 8 and 9 consisted of increasing doses of trifluralin (480, 720, and 960 g ai ha-1) applied at the time of planting. Treatments 10, 11, and 12 included pyroxasulfone (85 g ai ha-1), flumioxazin (51 g ai ha-1) and imazethapyr (100 g ai ha-1), respectively. These last three treatments were carried out at the time of planting; treatments 13 and 14 were: weed-infested (without weed control) and weed-free (manual weeding during the entire season). Flumioxazin 66% and pyroxasulfone 57% (mean of two samples) reduced weed dry weight compared to uncontrolled treatment. The results showed that the treatments were significantly different for 100-seed weight, biological yield, and seed yield of chickpea. Weed-infested and weed-free plants had the lowest and highest grain yield. Herbicide treatments of flumioxazin, trifluralin 960 g ai ha-1, and pyroxasulfone at planting produced 55%, 44%, and 40% higher grain yield than the weed-infested plots. Also, none of the herbicide treatments reduced chickpea yield and biomass. The herbicide residues had no adverse effect on wheat growth in the next crop season.","PeriodicalId":38464,"journal":{"name":"Agronomia Colombiana","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46053370","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

Taxonomic identification and diversity of effective soil microorganisms: towards a better understanding of this microbiome 有效土壤微生物的分类鉴定和多样性:对这一微生物组的更好理解

Agronomia Colombiana Pub Date : 2022-08-30 DOI: 10.15446/agron.colomb.v40n2.101378

Annerys Carabeo, J. Jiménez, Zuleiqui Gil, D. Henderson, Paul Adams, Alexander Calero-Hurtado

{"title":"Taxonomic identification and diversity of effective soil microorganisms: towards a better understanding of this microbiome","authors":"Annerys Carabeo, J. Jiménez, Zuleiqui Gil, D. Henderson, Paul Adams, Alexander Calero-Hurtado","doi":"10.15446/agron.colomb.v40n2.101378","DOIUrl":"https://doi.org/10.15446/agron.colomb.v40n2.101378","url":null,"abstract":"Soil microorganisms found in agricultural residues and the so-called efficient microorganisms (EM) are attractive for their potential applications and benefits in the bioremediation of complex ecosystems. However, the knowledge about Who is doing what?, as well as the trophic interaction in those communities that explain its benefits are limited; a better understanding of this microbiome is needed to explain its benefits. The objective of this research was to characterize the microorganisms isolated from two soil communities and the efficient microorganisms obtained in laboratory (EM16 consortium), taking into account physico-chemical characteristics, diversity, quantification, and taxonomic identification through microbiological and molecular techniques. A microbiological analysis was performed according to the morphological characteristics of the colonies as well as the study of the dynamics and taxonomic identification of the microbial populations through the TRFLP and Ion Torrent techniques. The diversity, dynamics, and taxonomic identification achieved in these studies showed the prospects for using these soil EM in bioremediation, considering the diverse metabolic pathways that these species have and their symbiotic interactive potential for biodegradation of lignocellulosic-resilient compounds. This study provides the first molecular characterization of the EM (EM16 consortium) and soil isolates from agricultural residues (sugarcane crop and bamboo field). The results suggest that the use of microbiological and molecular tools in a polyphasic approach allows the complete characterization of non-cultivable microorganisms that could contribute to sustainable environmental management and crop production.","PeriodicalId":38464,"journal":{"name":"Agronomia Colombiana","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43105411","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