La presidencia del doctor Santiago Derqui y la batalla de Pavón /

Mode of access: Internet.

O'Donnell y su tiempo /

Mode of access: Internet.

Friedrich Perthes Leben : nach dessen schriftlichen und mündlichen Mittheilungen /

Mode of access: Internet.

La corona de laurel que ofrece el pueblo madrileño al Excmo. Señor Duque de Tetuán /

Mode of access: Internet.

Politische Zustände und Personen in Deutschland zur Zeit der französischen Herrschaft.

Mode of access: Internet.

Schleiermacher's Introductions to the Dialogues of Plato

Mode of access: Internet.

Dissertation sur la philosophie atomistique /

Printed wrappers.

Der staatsdienst in Preussen, ein beitrag zum deutschen staatsrecht,

p. [175]-178, advertising matter.

Friedrich Perthes' leben,

Mode of access: Internet.

Introductions to the Dialogues of Plato /

Mode of access: Internet.

Narrative of the Texan Santa Fé expedition : Comprising a tour through Texas with an account of the disasters that the expedition encountered for want of food, and by attacks of Indians : the final capture of the Texians, and their sufferings as prisoners in Mexico /

Mode of access: Internet.

Efeito da temperatura no desenvolvimento e sobrevivência da cochonilha pseudococcus longispinus (Targioni Tozzetti, 1867) (hemiptera: Pseudococcidae) em cafeeiro

The longtailed mealybug Pseudococcus longispinus (Targioni Tozzetti, 1867) (Hemiptera: Pseudococcidae) has been reported attacking coffee crops causing fruit fall in the State of Minas Gerais, Brazil. The knowledge of the population dynamic of this pest is then necessary to implement control measures. Its development was studied at temperatures of 15, 20, 25, 30 and 35°C, determining the thermal requirements. The insects were confined inside a Petri dish containing a foliar disc of 4 cm diameter of Coffea arabica L., cultivar 'Acaiá Cerrado'. The temperature affected the P. longispinus development and survival. Few insects survived at temperatures of 15 and 30°C, and 100% of mortality was obtained at 35°C. The duration of the nymphal stage was reduced when the temperature was increased from 20 to 25°C, with a survival rate of 80% at both temperatures. The thermal parameters varied according to the development stage of the mealybug and the base temperature was fixed at 8.0 °C for the nymphal stage of females, a thermal constant of 422.1 day degrees and number of generations increased with rising temperature. The optimal temperature for the insect development was 25°C.

Programa de las lecciones de geodesia explicadas durante el curso de 1866 á 1867 /

Precede al tít.: Facultad de Ciencias. Sección de exactas.