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Comparative attractiveness of floral fragrance oils of "RIM" and "Catongo" cultivars of cacao (Theobroma cacao L.) to Diptera in a Costa Rican cacao plantation
(IICA, San José (Costa Rica), 1989-04)
En un terreno de cacao "Matina" abandonado de Costa Rica se hicieron pruebas durante la temporada de lluvias para comparar la atracción de tres concentraciones progresivas (100 ppm, 10 ppm, 1 ppm) de las esencias de las ...
Baseline soil characteristics of a humid tropical silvopastoral system and changes in selected soil properties
(IICA, San José (Costa Rica), 1993-01)
We established fast-growing leguminous trees (Erythrina berteroana Urban) in native grass pastures in Costa Rica's Atlantic region to determine the effects of tree pruning and cattle grazing on soil phosphorus availability ...
Substrate conditions, foliar nutrients and the distributions of two canopy tree species in a Costa Rican secondary rain forest
(1997)
A 28 yr old secondary lowland rain forest in Costa Rica was dominated by two tree species of contrasting ecologies, Vochysia ferruginea - a species typical of well-drained but infertile soils of high AL saturation, and ...
Measured ammonia emissions from tropical and subtropical pastures: A comparison with 2006 IPCC, 2019 Refinement to the 2006 IPCC, and EMEP/EEA (European Monitoring and Evaluation Programme and European Environmental Agency) inventory estimates
(American Dairy Science Association, Champaign, IL, EUA ; Elsevier, Ámsterdam, Países Bajos, 2020)
Agriculture is the largest source of ammonia (NH3) emissions. As NH3 is an indirect greenhouse gas, NH3 measurements are crucial to improving greenhouse gas emission inventory estimates. Moreover, NH3 emissions have wider ...
Some observations on Ischaemun indicum (Poaceae: Panicoideae: Andropogoneae) a recent aggresive introduction to Costa Rican pastures lands
(IICA, San José (Costa Rica), 1987-01)
Ischaemum indicum (Houtt.) Merrill, es un zacate endémico del subcontinente indio, conocido localmente como "rotana", ha sido introducido recientemente en Costa Rica y ha colonizado extensas áreas del país. Resulta de ...
Coffee agroforestry systems capable of reducing disease-induced yield and economic losses while providing multiple ecosystem services
(2020)
Crop losses caused by pests and diseases decrease the incomes and threaten the livelihoods of thousands of families worldwide.During two years, in a research network of 61 coffee plots under a wide variety of shade and ...