Search
Now showing items 1-10 of 59
Plagas de cultivos en América Central una lista de referencia.
(Centro Agronómico Tropical de Investigación y Enseñanza (CATIE), Turrialba (Costa Rica). Dept. de Producción Vegetal., 1983)
Teste de um procedimento alternativo de ensino para a utilizacao do catálogo em uma biblioteca florestal
(Universidade Federal do Paraná, Curitiba (Brasil), 1987)
Ciclos da matéria orgânica e dos nutrientes em agrossistemas com cacaueiros
(Centro de Pesquisas do Cacau, Bahia (Brasil) Sociedade Brasileira de Ciencia do Solo, Londrina, PA (Brasil), 1985)
A basic model to describe the organic matter and nutrient (N, P and K) cycles in permanent tropical crops is presented. The model is applied to the cultivation of cacao, which, being a sciophilous plant results in models ...
Estudo do efeito do processamento sobre resíduo de clorotalonil em graos de café
(IICA, San José (Costa Rica), 1989-07)
Pela presente pesquisa, procurou-se observar a ocorrencia de resíduos do fungicida clorotalonil derivado da ftalonitrila, aplicado em plantas de café. Para determinacao do nível do resíduo do clorotalonil usou-se um método ...
Morfología y anatomía de las semillas y plántulas de Eucalyptus intermedia R. T. Baker
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1982-07)
The morphology and anatomy of the seeds and the early development of Eucalyptus intermedia R. T Baker are described emphasizing the structure of the seed coat and embryo, with the purpose of providing the basis for their ...
Efectos de N, P y K en el contenido y producción de proteína en el sorgo para grano (Sorghum bicolor) en solución nutritiva
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1981-04)
Effects of N, P and K on protein contents and protein production of grain sorghum.
The experiment was designed to study the effects of nitrogen, phosphorus and potassium defficiences on protein contents of 5 grain sorghum ...
Evaluación de la actividad de enzimas del grupo de las fenoloxidasas en pulpa del camote (Ipomoea batatas)
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
For the purpose of evaluating the enzymatic action of the phenol oxidase and polyphenol groups in sweet potato pulp, a suitable method was sought which would not involve very complex laboratory techniques. After testing, ...
Evaluación de los daños causados por el virus dorado del frijol (VMDF)
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-04)
Quantitative evaluation of losses caused by golden mosaic virus in beans (BGMV) is very difficult under field conditions due to the difficulty in having plots completely free of the disease for comparison with infected ...
Temperatura do ar em cafezal
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1980-01)
This paper studies the thermal 1egime of añ inside an unshaded conventional coffee crop.
Measmements were made al five levels corresponding lo 20, 40, 60, 80 and 100 per cent of mean crop height.
Air temperature inside ...
Efecto de temperaturas supraóptimas sobre el sistema radical, el crecimiento y la absorción y translocación de nutrimentos en café cultivado en solución nutritiva
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1982-07)
Coffee seedlings, Coffey arabica cr. Casual, were grown in nutrient solution for a period of six months after germination, in six special containers, with 25 seedlings in each.
The temperature of the nutrient solution ...