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Mites associated with the avocado crop (Persea americana Mill) in the Central Coast of Peru
Ácaros asociados al cultivo del aguacate (Persea americana Mill) en la Costa Central de Perú
(2014-07-04)
Hass is an avocado cultivar grown in the central coastal region of Peru (Lima and Ica), with increasing economic importance, mainly to satisfy the high standards of foreign markets. This study (2010 to 2012, Central Coast), ...
Molecular characterization using rep-PCR of native isolates of Bacillus thuringiensis, obtained from soil samples
Caracterización molecular mediante rep-PCR de aislados nativos de Bacillus thuringiensis, obtenidos de muestras de suelo
(2014-07-04)
Bacillus thuringiensis is a Gram-positive bacteria forming spores, which produces parasporal crystals of a proteic nature, toxic against various orders of insects and biodegradable and harmless to other species. This ...
Soil enzyme activity -Dehidrogenase, ß-glucosidase, Phosphatase and Urease- under different crops
Actividad enzimática del suelo -Deshidrogenasa, β-Glucosidasa, Fosfatasa y Ureasa- bajo diferentes cultivos
(2014-07-04)
The activity of 4 soil enzymes in farms under different agronomic managements and in different soil types was analyzed. The enzymes tested were phosphatase, β-glucosidase, dehydrogenase and urease. Soil samples were taken ...
Verification of dry matter content as indicator of harvest for Hass avocado fruits (Persea americana) grown in intermediate elevation production areas at Los Santos, Costa Rica
Verificación del contenido de materia seca como indicador de cosecha para aguacate (Persea americana) Cultivar Hass en zona intermedia de producción de Los Santos, Costa Rica
(2014-07-04)
The objective of this research was to study whether avocado dry matter content (DMC) could be used as an appropriate harvest index in substitution of fruit oil content (OC), for Hass avocados grown in intermediate elevation ...
Characterization of visual symptoms of nutritional deficiencies in oak seedlings
Caracterización de los síntomas visuales de deficiencias nutricionales de plántulas del roble andino en invernadero
(2014-07-04)
The identification of visual symptoms of deficien- cies is a widely used method in the diagnosis of nutritional problems in agricultural and forestry production. The aim of this study was to charac- terize visual symptoms ...
Root development in F1 coffe hybrids obtained by tissue culture
Estudio del desarrollo radical en almácigo de híbridos F1 de café obtenidos por cultivo de tejidos
(2014-07-04)
F1 Hybrid seedlings, obtained by indirect somatic embryogenesis, were acclimatizated under greenhouse conditions, separated in 2 types of container: biodegradable mesh with compressed turf (Jiffy®) and the other on ...
Body condition assessment in a grazing Jersey cows herd in the highlands of Cartago. Variations during the productive cycle
Evaluación de la condición corporal en un hato de vacas Jersey en pastoreo en la zona alta de Cartago. Variaciones durante el ciclo productivo
(2014-07-04)
The aim of this research was to carry out a body condition score (BCS) observational study in a commercial grazing Jersey herd in Cartago, Costa Rica (9°55` N, 83°51` W, 2350 m of altitude). The study comprised 5864 BCS ...
Effect of sulpomag and organic complexs as partial substitutes of the culture medium used in the micropropagation of Musa sp. Cv. Cavendish
Efecto del sulpomag y complejos orgánicos como sustitutos parciales del medio de cultivo de micropropagación de Musa sp. Cv. Cavendish
(2014-07-04)
The Sulpomag natural fertilizer, or potassium sulfate and magnesium, constituted by K 2 O 22%, MgO 22%, S 18% and Cl (chloride) 2.5% plus organic complexes of coconut water 10 to 20%, and casein hydrolyzate 250 and 500 ...
Phosphorous balance on Costa Rican dairy farms
Balance de fósforo en fincas para la producción de leche en siete cantones de la región Huetar Norte y egión Central de Costa Rica
(2014-07-04)
The objective was to quantify P use in 11 dairy farms located in the provinces of San Jose, Cartago and Alajuela. Data such as feed purchases, milk sales, purchase and removal of animals between January and December 2010 ...
Analysis of the potato crop nutrient status in Costa Rica, on the basis of existing information
Análisis del estado nutrimental del cultivo de la papa en Costa Rica con base en información existente
(2014-07-04)
An analysis of the potato leaf nutrient concentration in Costa Rica was made, from the results of foliar analyses conducted during the years 2006-2012 at the Soil and Foliar Laboratory of the Agronomic Research Center, ...