Publisher: Universidad Pedagógica y Tecnológica de Colombia   (Total: 10 journals)   [Sort by number of followers]

Showing 1 - 6 of 6 Journals sorted alphabetically
La Palabra     Open Access  
Revista Colombiana de Ciencias Hortícolas     Open Access   (Followers: 1)
Revista de Investigación, Desarrollo e Innovación     Open Access   (Followers: 2)
Revista Facultad de Ingeniería     Open Access   (Followers: 1)
Revista Historia de la Educacion Latinoamericana     Open Access   (Followers: 2)
Revista Historia Y MEMORIA     Open Access   (SJR: 0.101, CiteScore: 0)
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Revista Colombiana de Ciencias Hortícolas
Number of Followers: 1  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2011-2173 - ISSN (Online) 2422-3719
Published by Universidad Pedagógica y Tecnológica de Colombia Homepage  [10 journals]
  • Acaricidal and larvicidal activity of Piper marginatum and Piper
           tuberculatum essential oils from Ecuador

    • Authors: Shirley Madeleine Moncayo-Baño, María Eugenia Rondón-Rivas, Francisco Xavier Cornejo-Sotomayor
      Pages: e17363 - e17363
      Abstract: Piper marginatum and Piper tuberculatum are species used by local indigenous, people who live especially in eastern Ecuador, for their insecticidal properties. This study aimed to determine the acaricidal and larvicidal activity of the essential oil of these species. The essential oils were obtained by hydrodistillation. The acaricidal activity was evaluated with the contact toxicity method against larvae of the tick Rhipicephalus microplus. Larvicidal activity was determined against Aedes aegypti mosquito larvae following WHO recommended guidelines. The essential oils of P. marginatum and P. tuberculatum showed an acaricidal potential with LC50 of 0.90 and 0.73 µL mL-1, respectively. In addition, excellent larvicidal activity was obtained with LC50 of 11.87 µL mL-1 (P. marginatum) and 8.42 µL mL-1 (P. tuberculatum) at 48 hours of evaluation. This is the first report of the acaricidal activity of P. marginatum and P. tuberculatum essential oils against Rhipicephalus microplus tick larvae. The results indicate that essential oils could be a natural alternative for the controlling these pests and would justify their ethnobotanical applications as a lice and tick repellent.
      PubDate: 2024-05-26
      DOI: 10.17584/rcch.2024v18i2.17363
      Issue No: Vol. 18, No. 2 (2024)
       
  • Determining of thermal time and base temperature during the reproductive
           phase of the Japanese plum in the tropical Andes

    • Authors: Mayerlin Orjuela-Angulo, Helber Enrique Balaguera-Lopez, Gerhard Fischer
      Pages: e17433 - e17433
      Abstract: Climate factors affect the phenological behavior of Japanese plum (Prunus salicina Lindl.) cultivation in tropical elevation. Thermal time is more precise than chronological time for the cultivation labor program and for the estimation of crop phenological events. The objective of this study was to determine the base temperature (Tb) and thermal time for the development of the 'Horvin' plum fruit, estimating the Tb for the reproductive phenological phase of the plum. Twenty trees, consisting of ten trees per rowat two different elevations of 2,195 and 2,567 m a.s.l. (meters above sea level), in the municipality of Nuevo Colon (Colombia), were marked by locality. The appearance of each phenological stage was recorded from floral bud to harvest, estimating Tb with the minimum coefficient method of variation in function of growing degree day (GDD). The results show Tb for the phenological stages floral-anthesis with 2.84°C; anthesis-fruits set, 3.05 °C, and fruit set-harvest, 1.76°C. Therefore, this variety should be grown where there is a minimum temperature of 3.05°C during the reproductive phase. In addition, the results show that an average of 1,243.17 and 1,172.12 GDD is required to go from fruit set to fruit harvest at elevations 2,195 and 2,567 m a.s.l., respectively.
      PubDate: 2024-05-26
      DOI: 10.17584/rcch.2024v18i2.17433
      Issue No: Vol. 18, No. 2 (2024)
       
  • Determination of the phenology of Aloysia citriodora (Palau) and the
           associated arthropods

    • Authors: Silvia Patricia López-Zapata
      Pages: e17370 - e17370
      Abstract: Lemon verbena, Aloysia citriodora (Palau) has been widely used in traditional medicine, cosmetics, and the food industry. In Colombia the foliage is marketed fresh but there is no information regarding the plant phenology, nor on the insects associated, therefore the management practices are still empirical, and sometimes does not comply with the national regulations for the commercialization of medicinal plants. In this study it was determined that it takes 32 weeks from planting to flower senescence completing its phenological cycle; likewise, an associated arthropofauna of 50 families with different feeding habits were found, suggesting that the species offers different ecosystem services. The information obtained could contribute to establish more effective management plans for arthropods, and to improve quality of materials with medicinal purposes.
      PubDate: 2024-05-01
      DOI: 10.17584/rcch.2024v18i2.17370
      Issue No: Vol. 18, No. 2 (2024)
       
  • Assessment of the health status of citrus propagation material against Hop
           stunt viroid through biological and molecular diagnosis

    • Authors: Diana Milena Rodríguez-Mora, Kevin Alejandro Rodríguez-Arévalo, Mauricio Fernando Martínez, Nubia Murcia-Riaño
      Pages: e17106 - e17106
      Abstract: Hop stunt viroid (HSVd) is the causal agent of citrus cachexia, which can lead to significant crop losses. As part of a preventive management strategy, it is essential to use healthy plants from a certification program. This study aimed to, healthiness of 17 citrus cultivars was evaluated against HSVd using both biological and molecular diagnostics. For biological diagnosis, Etrog citron (Citrus medica L.) clone Arizona 861 S1 was used as an indicator plant, incorporating negative and positive controls for HSVd infection. For molecular diagnosis, reverse transcription polymerase chain reaction (RT-PCR) technique was employed with specific primers for viroid detection. Results indicated that six months after inoculation, the positive control exhibited symptoms associated with viroid infection, such as necrosis in the petiole and stem, leaf epinasty, and necrosis in the midvein. In contrast, both the negative control and evaluated citrus cultivars showed no symptoms. These findings were supported by molecular analysis, which allowed the amplification of a viroid genome region only in the positive control. Both biological and molecular diagnosis confirmed the absence of HSVd in the citrus varieties assessed. This study will facilitate the evaluation of the citrus plant collections used in the foundation category as a source of buds for plant multiplication of registered and certified seeds for citrus propagation nurseries in Colombia.
      PubDate: 2024-05-01
      DOI: 10.17584/rcch.2024v18i2.17106
      Issue No: Vol. 18, No. 2 (2024)
       
  • Precision agriculture in avocado production: Mapping the landscape of
           scientific and technological developments

    • Authors: Juan P. Taramuel-Taramuel, Claudia Nelcy Jiménez-Hernández, Dursun Barrios
      Pages: e17428 - e17428
      Abstract: The integration of cutting-edge precision agriculture technologies into avocado production is a promising strategy to boost productivity and profitability in this thriving industry. While previous reviews have explored the application of emerging technologies in avocado cultivation, there is a gap in the analysis of patent production. This research aims to bridge that gap by identifying trends in both scientific and technological innovations related to precision agriculture in avocado. Through a bibliometric analysis using data from Scopus and Lens.org, this study reveals that scientific production is primarily concentrated in industrialized countries, with limited research output from major avocado-producing nations. The focus of research has been on remote sensing and image processing techniques. In terms of technological development, innovations in agricultural data capture, collection, and processing, as well as components for agricultural machinery, have been the most prevalent. Market-available technologies are designed to predict crop yields and assess the impact of abiotic factors such as temperature, humidity, and precipitation. By adopting these precision agriculture tools, avocado farmers can make data-driven decisions to optimize resource use, improve crop health, and ultimately enhance overall farm performance.
      PubDate: 2024-05-01
      DOI: 10.17584/rcch.2024v18i2.17428
      Issue No: Vol. 18, No. 2 (2024)
       
  • Genotype-by-environment interaction of Solanum quitoense (Lam.) using the
           AMMI model

    • Authors: Liz Katherine Lagos-Santander, David Esteban Duarte-Alvarado, Túlio César Lagos-Burbano
      Pages: e17442 - e17442
      Abstract: The basis for genetic improvement for the cultivation of lulo (Solanum quitoense Lam.) in Colombia is limited. Research related to genotype-by-environment interaction (GEI) and stability in agronomic traits is scarce. To identify outstanding genotypes, GEI and the stability of fruit weight (FW), ascorbic acid (AA), and yield of 10 half-sib families (HSF) were evaluated. At the locations of San Pedro de Cartago, Arboleda, Tangua and La Union of the department of Nariño (Colombia), four trials were established under the randomised complete block design with four repetitions. To analyse GEI, the additive main effects and multiplicative interaction (AMMI) model and some AMMI stability parameters were used. In yield, the HSF7 and the control presented specific adaptation for Tangua, with 12.82 and 13.41 t ha-1, respectively and FW greater than 100 g. In Arboleda, HSF29 obtained the highest yield (16.14 t ha-1) with an FW of 100.53 g. HSF4, HSF28 and HSF49 reached yields above 9.0 t ha-1 and a FW greater than 100 g; therefore, they are recommended for any of the environments evaluated given their stability. HSF25 in AA and HSF29 in yield presented specific adaptation in Arboleda. Stable families across environments and with good yield were HSF4, HSF28, and HSF49, HSF4 and HSF28 showed higher values in two of the three traits, and HSF49 was outstanding in all three variables. These families can be used in plant breeding programmes as parents or distributed to farmers as improved varieties.
      PubDate: 2024-05-01
      DOI: 10.17584/rcch.2024v18i2.17442
      Issue No: Vol. 18, No. 2 (2024)
       
  • Excess of zinc reduces the growth of bulb onion plants (Allium cepa L.)

    • Authors: Fánor Casierra-Posada, Luis Miguel Trujillo-Niño
      Pages: e17400 - e17400
      Abstract: While zinc (Zn) is an essential element for plant metabolism, anthropic activities and poor agricultural practices as well as frequent use of pesticides and fertilizers rich in this element can cause toxic levels of Zn to plants. A study was done under greenhouse conditions in Tunja, Colombia in which bulb onion seedlings (Allium cepa L.) were exposed to 0 (control), 20, 40, and 80 mg L-1 of Zn in mixture with a nutrient solution containing macro and micronutrients. The excess Zn in the solution had a rather drastic effect on the accumulation of dry weight and reduced the absolute growth rate, the specific leaf area, the water uptake, the water use efficiency, the leaf area, the length of all roots per plant, and on the contrary, increased the content of total soluble solids in the juice of the bulb. Thus, most growth-related variables were negatively affected from 20 mg L-1 and up of Zn in solution. In addition, the toxic effect of Zn is more drastic on plants growing in nutrient solution compared to those growing in soil. The experiment lasted until 54 days after transplanting, which was the limit for plant survival, especially at higher concentrations of Zn, so it can be inferred that these plants have low tolerance to high Zn contents in the substrate.
      PubDate: 2024-04-28
      DOI: 10.17584/rcch.2024v18i2.17400
      Issue No: Vol. 18, No. 2 (2024)
       
 
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Publisher: Universidad Pedagógica y Tecnológica de Colombia   (Total: 10 journals)   [Sort by number of followers]

Showing 1 - 6 of 6 Journals sorted alphabetically
La Palabra     Open Access  
Revista Colombiana de Ciencias Hortícolas     Open Access   (Followers: 1)
Revista de Investigación, Desarrollo e Innovación     Open Access   (Followers: 2)
Revista Facultad de Ingeniería     Open Access   (Followers: 1)
Revista Historia de la Educacion Latinoamericana     Open Access   (Followers: 2)
Revista Historia Y MEMORIA     Open Access   (SJR: 0.101, CiteScore: 0)
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JournalTOCs
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
 


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