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Natural resource conservation with peoples' participation in the uplands of the Maribios Volcanic Ranges of Nicaragua. I. Appropriate land use and rural social diversity
(IICA, San José (Costa Rica), 1993-07)
Biophysical and socioeconomic problems related to natural resource conservation of the uplands of the Maribios volcanic ranges of Nicaragua are discussed. Since the USDA method for land classification was found to be ...
Identification and distribution of melon-infecting viruses and their vectors in two provinces of Costa Rica
(IICA, San José (Costa Rica), 1993-07)
El virus de la mancha anular de la papaya o "papaya ringspot virus" (PRSV), el virus del mosaico de la sandía II o "watermelon mosaic virus II" (WMV-II), el virus del mosaico del pepino o "cucumber mosaic virus" (CMV) y ...
Natural resource conservation in the Maribios uplands of Nicaragua. III. Conceptual framework for incentives
(IICA, San José (Costa Rica), 1993-07)
Considerable work has been done on conservation incentives, but a simple, uniform decision-making criterion is still lacking. This paper develops a decision-making tool in the form of a three-part conceptual framework for ...
Heat treatment for enhanced responsiveness of dorman axillary buds of pineapples
(IICA, San José (Costa Rica), 1994-04)
Explants 3-5 mm in diameter, consisting of dormant axillary buds and adjacent stem tissue, were excised from the stem region of the crown, disinfected, rinsed and immersed in distilled water at 60 deg C for 6 or 8 min ...
Fall armyworm and neotropical cornstalk borer on sorghum and maize intercropped with legumes in Honduras
(IICA, San José (Costa Rica), 1994-04)
The effects of intercropped legumes on densities of Spodoptera frugiperda (FAW) and Diatraea lineolata (NCSB) on sorghum (Sorghum bicolor) and maize (Zea mays) were studied in central Honduras in 1986 and 1987. Sorghum and ...
Effects of Bauhinia monandra (Kurz) seed extracts on yield, mophology and anatomy of cassava plants
(IICA, San José (Costa Rica), 1993-10)
Estacas de yuca TMS30572 fueron remojadas parcialmente en extractos de semillas B. monandra por 70 h y, luego, sembradas en el campo en abril de 1988 y cosechadas en abril de 1989. Se llevaron a cabo un segundo y un tercer ...
Effect of extracts from Bauhinia monandra (Kurz) seeds on cassava
(IICA, San José (Costa Rica), 1992-04)
Se sembraron esquejes de tallo de mandioca, luego de ser sumergidos parcialmente en un extracto gaseoso y en uno acuoso no gaseoso de semillas de Bauhinia monandra (Kurtz). El extracto de cáscara de semilla y de los ...
Effect of long term NH subíndice 4+ nutrition on growth and yield of wheat plants
(IICA, San José (Costa Rica), 1992-10)
Plantas jóvenes de trigo (cv. Klein dorado) fueron cultivadas, en condiciones de invernáculo, en macetas con 1 kg de arena (tres plantas por maceta), las que se fertilizaron periódicamente por medio de un tampón con una ...
Potential use of Azospirillum as biofertilizer
(IICA, San José (Costa Rica), 1993-10)
Hace más de quince años se probó, por primera vez, el potencial de Azospirillum como biofertilizante en cereales. A pesar del optimismo de los resultados iniciales, la inoculación con Azospirillum en el campo ha demostrado ...
Host-pathogen interaction in dual cultures of Helianthus annuus L. - Sclerotinia sclerotiorum (Lib.) de Bary
(IICA, San José (Costa Rica), 1992-04)
En este trabajo se describe un nuevo sistema para el cultivo dual in vitro de un hongo pertótrofo Sclerotinia sclerotiorum y un callo derivado de cotiledón de Helianthus annuus. Dicho cultivo dual se logró circunscribiendo ...