Agronomía
Envíos recientes
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Caracterización de frutos de cinco genotipos de tacaco [Sechium tacaco (Pittier) C. Jeffrey] en Costa Rica
(2017-10-13)Se caracterizaron los frutos de cinco genotipos de tacaco de alta calidad en Costa Rica, tanto a nivel cualitativo (tres variables) como cuantitativo (10 variables). Se presentaron diferencias estadísticamente significativas ... -
Caracterización morfológica de dos genotipos de berenjena (Solanum melongena) cultivados en invernadero en Costa Rica
(2017-12)La berenjena es un cultivo con potencial de innovación en el mercado costarricense. Se realizó una caracterización morfológica de dos genotipos de berenjena (JMX-292 y JMX-1099) cultivados en invernadero en Alajuela, Costa ... -
Efecto de la densidad de siembra sobre el rendimiento y calidad de los frutos de dos genotipos de berenjena (Solanum melongena L.) cultivados en invernadero en Costa Rica
(2017-12-06)Se evaluó el efecto de dos densidades de siembra (0,65 y 1,30 plantas/m2) sobre el rendimiento y calidad de dos genotipos de berenjena (JMX-1099 y JMX-292) cultivados en invernadero, en Alajuela, Costa Rica. El cultivo ... -
Characterization and Development of UV and Aluminium Tolerance in Maize
(2018-11-29)Current estimates suggest that the world population may increase to 9,6 billion in 2050. Demand for agricultural products may also increase by 50% by 2030, as situation that requires intensification of food production ... -
Producción y exportación de sandía (Citrullus lanatus) en Costa Rica
(2014-11)La sandía, Citrullus lanatus (Thunb.) Matsumura et Nakai, es una planta de la familia Cucurbitaceae, originaria de África Tropical. Esta especie es muy apetecida por sus frutos, aunque también se consumen sus semillas, ... -
Evaluation of planting densities and shoot pruning practices for indeterminate bell pepper production in Dominican Republic, Honduras, and Costa Rica
(2011)Indeterminate bell pepper (Capsicum annuum) production in Central America under protected agriculture has steadily increased over the last 10 years. The Protected Agriculture Information Network (PAINet) was created in ... -
Diagnóstico de la situación y perspectivas económicas de la producción de frutales en Costa Rica
(1994-12)Se analizó la situación actual del mercado nacional de frutas en Costa Rica, así como del mercado internacional, principalmente Europa y Norteamérica. Se identificaron las tendencias del mercado, oportunidades, ventajas ... -
Common/spear rot crown disease in oil palm (Elaeis guineensis Jacq.): anatomy of the affected tissue
(1994-12)Bent rachises in palms with symptoms of “crown disease” had fibres with thinner and less lignified cell walls than normal cells. Also, vascular bundles were less numerous, thinner, and had fewer fibres than healthy tissue. ... -
Detection of Potyvirus-like Particles Associated with Oil Palms (Elaeis guineensis) in Ecuador
(1996-09-03)Oil palm (Elaeis guineensis Jacq.) seedlings showing a conspicuous mottling, composed of alternating dark green and chlorotic areas in the form of discontinuous streaks or irregular ring patterns, were observed in the ... -
Guazuma ulmifolia (Sterculiaceae), a new natural host of 16SrXV phytoplasma in Costa Rica
(2011-04)Guacimo trees (Guazuma ulmifolia, Sterculiaceae) showing witches’ broom symptoms (GWB), small leaves, short internodes, stunting and no flower and fruit production were observed on side roads and fences in different areas ... -
Citrus Huanglongbing Associated with ‘Candidatus Liberibacter asiaticus’ Present in the Northern Region of Costa Rica but Has Not Been Detected in Other Citrus- Growing Areas
(2015-12)Since 2011, citrus Huanglongbing (HLB, ex-greening) disease has been detected in Los Chiles, Costa Rica, close to the Nicaraguan border, by the State Phytosanitary Service (Servicio Fitosanitario del Estado; SFE) and by ... -
Detection of Plantago asiatica mosaic virus in lily hybrid plants(Lilium spp.) in Costa Rica grown from imported bulbs
(2017-12)Plantago asiatica mosaic virus (PlAMV) was detected in Costa Rica infecting lily plants showing foliar chlorotic and necrotic streaking. Virus identity was established by TEM, sequencing and ELISA. Pathogenicity was confirmed ... -
Population Genomic Analysis of a Bacterial Plant Pathogen: Novel Insight into the Origin of Pierce’s Disease of Grapevine in the U.S.
(2010-11)Invasive diseases present an increasing problem worldwide; however, genomic techniques are now available to investigate the timing and geographical origin of such introductions. We employed genomic techniques to demonstrate ... -
Chayote mosaic, a new disease in Sechium edule caused by a tymovirus
(1997-04)A sap-transmissible virus was isolated from chayote (Sechium edule) in Costa Rica. Infected plants showed chlorotic spots and rings, and blotchy mosaics, which often coalesced to give a complete mosaic and leaf deformation. ... -
‘Candidatus Phytoplasma costaricanum’ a novel phytoplasma associated with an emerging disease in soybean (Glycine max).
(2011-12)A novel phytoplasma, designated strain SoyST1c1, associated with a newly emerging disease in soybean (Glycine max), known as soybean stunt (SoyST), was found in 2002 in a soybean plantation in Alajuela Province, Costa Rica. ... -
Adaptación de una técnica de inmunosorbencia (ELISA) a la detección del virus del rayado fino del maíz en su insecto vector
(1983-06)An enzyme-linked immunosorbent assay (ELISA) was adapted for detection of maize rayado fino virus (RFV) in its insect vector Dalbulus maidis. Optimization of experimental conditions for the assay included the use of ... -
Caracterización del MStV asociado a una enfermedad de maíz en Costa Rica
(1991-09)Maize stripe virus (MStV) was identified as a causal agent of a corn disease in Costa Rica. Cytoplasmic inclusion bodies in needle, ring and eight-shapes were observed by light microscopy in infected leaf tissue. Different ... -
Histological observations on maize leaf tissues infected with rayado fino virus
(1977-03)Observaciones realizadas al microscopio electrónico mostraron que las células del parénquima de hojas de maíz infectadas con el virus del rayado fino (VRF) aparecían ligeramente contraídas en relación a las de hojas sanas. ... -
Papaya ringspot virus and Cucumber mosaic virus associated with a severe mosaic in melon
(1991-09)Severe mosaic disease was observed in several melon fields in Costa Rica during the period 1987-1991. Two viruses, papaya ringspot virus (PRSV) and cucumber mosaic virus (CMV) were associated in single and mixed infections ... -
Producción de chile dulce (Capsicum annuum) en invernadero: efecto de densidad de siembra y poda
(2018)Se evaluó el efecto de dos tipos de poda (Española y Holandesa) y tres densidades de siembra (2,60; 3,25; y 3,90 plantas/m2) sobre el rendimiento y la calidad del chile dulce cv. FBM-9 cultivado bajo invernadero en Costa ...
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