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Now showing items 21-30 of 215
Restoration practices for subtropical dry forest in Puerto Rico: ecological and economic aspects for native trees species
(2012)
Subtropical dry forests that are degraded by human activities may take centuries to recover. Reforestation projects can be an important instrument for the regeneration of dry forests. However, the costs and labor requirements ...
Evaluación de vermicomposta de café como medio alterno en la producción de pimiento tipo Cubanelle (Capsicum annuum L.)
(2012)
A chemical and physical characterization of vermicompost from coffee pulp was conducted to determine nutriments content and its potential use as a substrate for germination when mixed with Pro-Mix ® and as growth substrate ...
Efectos del biosólido municipal compostado como medio de cultivo alterno a la turba utilizado en la producción de pascuas (Euphorbia pulcherrima Willd. ex Klotzsch)
(2008)
Poinsettia (Euphorbia pulcherrima Willd. ex. Klotzsch) is one of the most important crops in the ornamental industry of Puerto Rico. The objectives of this research were: to evaluate growth responses of poinsettia plants ...
Caracterización morfológica, patogénica y molecular de hongos asociados a frutales exóticos tropicales, rambutan (Nephelium lappaceum L.) y longán (Dimocarpus longan L.) en Puerto Rico
(2010)
El rambután, Nephelium lappaceum L., y el longán, Dimocarpus longan L., son frutales exóticos tropicales que han ganado auge en el mercado internacional despertando interés en los agricultores de Puerto Rico. Sin embargo, ...
Evaluación de bioestimulantes en dos clones de cacao (Theobrama cacao) creciendo en vivero para ser usados como patrones para injerto
(2016)
Las investigaciones se realizaron en 2014 y 2015 en un vivero de Mayagüez, Puerto Rico, para evaluar el efecto de 9 biostimulantes disponibles comercialmente en el crecimiento de 2 clones de cacao recomendados como patrón ...
Detección y caracterización de bacterias endofíticas en árboles de cafeto (Coffea arabica L.) y de sombra en Puerto Rico
(2012)
Among bacterial diseases affecting coffee (Coffea arabica L.), coffee leaf scorch (CLS) caused by the bacterium Xylella fastidiosa (Xf) Wells et al., limits production in many countries. The importance of endophytic bacteria ...
Response to phenotypic recurrent selection for resistance to Diaphania hyalinata (L.) (Lepidoptera: Pyralidae) in Tropical Pumpkin (Cucurbita moschata Duchesne)esponse to phenotypic recurrent selection for resistance to Diaphania hyalinata (L.) (Lepidoptera: Pyralidae) in Tropical Pumpkin (Cucurbita moschata Duchesne)
(2007)
In order to determine the effectiveness of phenotypic recurrent selection for resistance to melonworm, two cycles of selection were carried out on Cucurbita moschata ‘Taína Dorada’. Selection was based on results of a ...
Efectos de bioestimulantes para sistemas orgánicos y sustentables en limón ‘Tahití’ (Citrus latifolia Tanaka)
(2012)
Experiments were conducted during 2010 and 2011 in Lajas, Puerto Rico, to determine the effects of two biostimulants (agricultural formulations of an Ascophyllum nodosum extract and a blend of amino acids + potassium) on ...
Sigatoka disease complex of Musa spp. in Puerto Rico and the development of a transformation vector for Pseudocercospora fijiensis to examine the avirulence 4 (PfAvr4) effector during infection of Musa spp.
(2021-05-14)
Bananas and plantains (Musa spp.) are among the world’s most economically
important crops. Worldwide, the most important fungal leaf diseases of Musa spp. are the
Sigatoka disease complex, comprised of the black leaf ...
Benthic algae biological indicators of trophic status in tropical streams
(2014)
This study describes the stressor-response relationships between water quality parameters and periphyton biomass on artificial and natural substrates of three tropical streams with contrasting trophic status. At the nutrient ...