Buscar
Mostrando ítems 1-10 de 25
Efecto de la fertilidad química bajo cuatro densidades de siembra en dos variedades de cebada (Hordeum vulgare L.) y (Hordeum distichum L.)
(Quito: Universidad Central del Ecuador, Facultad de Ciencias Agrícolas, 1978. 122 p., 2015)
Estudio de adaptación de veinte variedades de cebada maltera (Hordeum distichum L. y Hordeum vulgare L.) en nueve localidades de la zona del Ecuador
(Quito: Universidad Central del Ecuador, Facultad de Ingeniería Agronómica y Medicina Veterinaria,1978. 92 p., 2015)
Effect of content and distribution of hydroxamic acids in wheat on infestation by the aphid Schizaphis graminum
(1981)
The content of hydroxamic acids in wheat plants shows substantial variations between different species and cultivars (1.0-6.3 mmol/kg fr. wt). It also varies with the age of the plant and the organ assayed. The maximum ...
Role of hydroxamic acids in the resistance of cereals to aphids
(1980)
Hydroxamic acid concentration in Gramineae, both natural and incorporated, correlates with resistance to the aphid Metopolophium dirhodum. 2,4-Dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one, a hydroxamic acid isolated ...
Source-sink limitations for grain weight in wheat and barley under waterlogging conditions during pre-anthesis
(Wiley Blackwell Publishing, Inc, 2021-11)
In wheat and barley, grain yield is strongly affected by waterlogging, especially during the period immediately previous to anthesis. Although waterlogging reduces grain yield mainly by reductions in grain number, mean ...
Evaluación del rendimiento y del margen bruto de cebada cervecera (Hordeum distichum) inoculada con Azospirillum brasilense y fertilizada
(Universidad Nacional de Luján, 2018)
El modelo actual de agricultura es cuestionado y presenta distintas problemáticas. El exceso en el uso de fertilizantes, el uso inadecuado y en algunos casos excesivo de agroquímicos, trae consecuencias a la salud, al medio ...