Now showing items 1-8 of 8
Hypocalcemia and hipomagnesemia in a Holstein, Jersey and Guernsey grazing herd
Hipocalcemia e hipomagnesemia en un hato de vacas Holstein, Jersey y Guernsey en pastoreo
The aim of this study was to determine the prevalence of hypocalcemia and hypomagnesemia in a Holstein, Jersey and Guernsey cow herd at parturition, under the same feeding, management and environmental conditions. It was ...
In vitro evaluation of nematophagous fungi of Costa Rica rice-growing regions against the root-knot Meloidogyne javanica
Evaluación in vitro de hongos nematófagos en zonas arroceras de Costa Rica contra el nematodo agallador Meloidogyne javanica
Parasitism in vitro of 14 isolates of nematophagous fungi (6 Trichoderma sp., 4 Paecilomyces sp., 2 Fusarium oxysporum and 2 Monacrosporium sp.) was evaluated againts juveniles and eggs of the root-knot nematode, Meloidogyne ...
Expected genetic gain and genotype- environment interaction in Acacia mangium in the northern region of Costa Rica
Ganancia genética esperada e interacción genotipo-ambiente en Acacia mangium en la zona norte de Costa Rica
Two Acacia mangium Willd. progeny tests were evaluated, pursuing an increment in the profitability of commercial plantations. The 25 open-pollinated families were established in Los Chiles and San Carlos, northern region ...
Watery rot of pseudo-stem (Dickeya sp.) management in banana (Musa sp.) under greenhouse conditions
Manejo de la pudrición acuosa del pseudo-tallo (Dickeya sp.) en banano (Musa sp.) bajo condiciones de invernadero
This crop has serious constraints with diseases, including those caused by bacteria, such as Dickeya sp. This research aimed to evaluate the effect of 4 resistance inductors and 3 doses in Chlorine Dioxide in handling ...
Nutrient absorption curves in papaya (Carica papaya L.) cv. “Pococí” during vegetative growth, flowering and the beginning of the harvest period
Curvas de absorción de nutrientes en papaya (Carica papaya L.) cv. “Pococí” en las fases de crecimiento vegetativo, floración e inicio de cosecha
In a commercial papaya farm located at Guácimo, Costa Rica, the requirements of nutrients, and the nutrient absorption curves for the Costa Rican high-yielding papaya hybrid “Pococí”, were established. The experiment was ...
Prevalence of hypocalcemia in four grazing Jersey herds in Costa Rica
Prevalencia de hipocalcemia en cuatro hatos Jersey en pastoreo en Costa Rica
Clinical hypo-calcemia (CH) is a common metabolic disease in cows grazing lush pastures high in potassium. The aim of this study was to determine the prevalence of CH and subclinical hypocalcemia (SH) in 4 grazing Jersey ...
Agronomic evaluation of thirteen genotypes of sweet potato (Ipomoea batatas L.)
Evaluación agronómica de trece genotipos de camote (Ipomoea batatas L.)
The goal of this study was to determine the agronomic performance of 13 sweet potato genotypes for their cultivation in Costa Rica. Ten were introduced from North Carolina State University’s Micropropagation and Repository ...
The effect of the application of compost and nematicide on the dynamics of microorganism populations, soil phytoparasite nematodes and the root system health in the banana crop (Musa AAA) planted on domes
Efecto de la aplicación de compost y nematicida sobre la dinámica de las poblaciones de microorganismos, nematodos fitoparásitos del suelo y la salud del sistema radical en el cultivo del banano (Musa AAA) sembrado en domos
The effect of implementing 6 doses of compost plus a control, interacting with the nematicide application or non-application, on the dynamics of the soil microorganisms population (bacteria, fungi and actinomycetes), the ...