Search
Now showing items 1-10 of 59
Relación entre la madurez aparente al cosechar y la calidad post-cosecha de cultivares de melocotón [Prunus persica (L). Batsch] con bajo requerimiento de horas-frío en Puerto Rico
(2009)
The goal of this research was to establish the minimum initial apparent maturity at harvest (based on the external coloration of the fruit) so that peach fruits could have acceptable attributes of quality by time of the ...
Tiempos de aplicación de oxyfluorfen y halosulfuronmethyl y su control de malezas en cebollas (Allium cepa L.)
(2004)
Three field experiments were conducted to evaluate phytoxicity and efficacy of weed control of oxyfluorfen [2-chloro-1-(3-ethoxy-4-nitrophenoxy)-4-(trifluoromethyl) benzene] and halosulfuron-methyl [[(4,6-dimethoxy-2-pyr ...
Caracterización de los nutrientes y sedimentos en la escorrentía de suelos enmendados con residuos orgánicos de vaquería
(2009)
Runoff with elevated phosphorus (P) and nitrogen (N) concentrations from agricultural soils contributes to surface water quality reduction. The effects of soil test P, dairy manure sludge application levels, and time after ...
Manejo de nemátodos fitoparasíticos utilizando productos naturales y biológicos
(2006)
This study is intended to evaluate different non-chemical agricultural practices such as organic amendments, biocontrol fungi and antagonist legumes in the control of plant parasitic nematodes. Greenhouse and field trials ...
Estimulación del crecimiento y desarrollo de frutas de plátanos (Musa acuminata x balbisiana, AAB) mediante aplicaciones de biorreguladores y fertilizantes
(2007)
Several experiments were designed with the objective to determining the effect of growth biorregulators and fertilizers, on growth and development enhancement of plantain fruits (Musa acuminata x balbisiana var. Maricongo). ...
Caracterización fenotipica de una colección de germoplasma de mamey sapote (Portería Sapota, [JACQ.] H.E. Moore & Stearn.) del USDA-ARS TARS
(2009)
Twenty-six accessions of mamey sapote (Pouteria sapota [Jacq.] H.E. Moore & Stearn) from the USDA-ARS TARS (Tropical Agricultural Research Station) collection growing at Isabela, Puerto Rico were evaluated for both ...
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 ...
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 ...
Incidencia y caracterización: Morfológica, patogénica y genética de Alternaria spp. en cultivos de cebolla del sur de Puerto Rico
(2005)
Incidence and characterization of Alternaria spp. associated with foliar lesions at different stages of the onion cycle were determined. The study was carried out at commercial and experimental fields in the southern area ...
Nitrogen retention and movement in a variable charge
(2005)
A study was conducted to evaluate the effect of lime application and frequency
of N fertigation on NH4
+
and NO3
-
concentrations on Coto clay. Two field experiments
were established at Isabela, PR, one in March, ...