Listar Agronomía Costarricense 37(2) por título
Mostrando ítems 1-11 de 11
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Critical density of Meloidogyne exigua in nursery coffee plants, Caturra variety
(2013-12-11)The purpose of this study was to evaluate the effect of increasing density of Meloidogyne exigua on the development of nursery plants. Coffee plantlets of the Caturra variety were transplanted into polyethylene bags with ... -
Effect of inbreeding on productive parameters in Costa Rican Holstein and Jersey cows
(2013-12-11)A retrospective longitudinal study was conducted with 208 148 records of Holstein and Jersey cows from 545 specialized dairy herds present in the VAMPP Bovino National Data Base, of the Regional Center of Informatics for ... -
Evaluation of forage potential of ten soybean cultivars (Glycine max (L) Merr) in Venezuela
(2013-12-11)In order to evaluate and select cultivars of soybean (Glycine max (L) Merr) for forage purposes, an experiment was conducted using a randomized complete block design with 6 replications. The experimental materials used ... -
Fasciola hepatica en ganado bovino de carne en Siquirres y lesiones anatomo-histopatológicas de hígados bovinos decomisados en mataderos de Costa Rica
(2013-12-11)This study was carried out in order to determine Fasciola hepatica infection in a farm dedicated to fattening beef cattle in Siquirres, Limón province; also, to characterize the most common lesions in parasitized bovine ... -
Geo-referenced analysis of the distribution of the number of hands per bunch in an area of banana production
(2013-12-11)To adapt technological tools based on global positioning systems to agricultural practices is crucial to improve the efficiency of production per area, increasing the productivity levels. The objective of this project was ... -
Granular base formulation for the incorporation of biologically-effecting active ingredients for the control of simbiotic fungus grown by leaf cutting ants, Atta spp
(2013-12-11)Leaf cutting ants (Atta spp.) can destroy complete plantations of economically important crops in Tropical and Subtropical America, by cutting plant tissues and transporting them to underground nests where they grow a ... -
Interpolation of soil fertility data with Kriging and its validation
(2013-12-11)The goal of this study was to make and validate interpolated maps of 6 soil fertility variables. The maps were made from the results of Ca, pH, soil acidity, K, P and saturation of soil acidity of 138 soil samples that ... -
Kerosene biodegradation in the grasses’ rizosphere under greenhouse conditions
(2013-12-11)Kerosene affects in a negative way the soil biological activity, also the growth and development of the plant. To examine the aforesaid, this contaminant was evaluated in oats plants (Avena sativa), barley (Hordeum vulgare), ... -
Prevalence and risk factors related with clinical and subclinical ketosis type I and II in a Jersey cow herd in Costa Rica
(2013-12-11)The aim of this study was to analyze the prevalence and grade of ketosis type I and II, and to examine risk factors related with this metabolic disease, in a 203 cows Jersey herd in Oreamuno, Cartago, Costa Rica (9° 55' ... -
Producción de biomasa y costos de producción de pastos Estrella Africana (Cynodon nlemfuensis), Kikuyo (Kikuyuocloa clandestina) y Ryegrass Perenne (Lolium perenne) en lecherías de Costa Rica
(2013-12-11)Se evaluó la producción de biomasa, los costos de producción y el costo del kilogramo de materia seca en los pastos kikuyo (Kikuyuocloa clandestina), ryegrass perenne (Lolium perenne) y estrella africana (Cynodon nlemfuensis), ... -
The effect of quality of food source on macadamia nut damage by Gymnandrosoma aurantianum (Lepidoptera: Tortricidae)
(2013-12-11)The effect of nitrogen content, the secondary compounds (tannin and proanthocyanidin) content, the dry matter content of 4 clones, and the different developmental stages of macadamia nuts, on the abundance of Gymnandrosoma ...