Resistance of sugarcane cultivars to Diataea saccharalis.

The objective of this work was to evaluate the ovipositions preference of Diatraea saccharalis and the effect of ten sugarcane cultivars on larval development. Oviposition preference was assessed under greenhouse condition by three releases of couples of moths, with subsequent counting of egg masses and eggs per plant. In order to evaluate the effet of the cultivars on larval development, each plant was infected with about 150 eggs, and, 29 days later, the total number of internodes, number of bored internodes, number of life forms found, larval and pupal weight and length, and the width of larval head capsule were evaluated.Título em português: Resistência de cultivares de cana?de?açúcar a Diatraea saccharalis

Milhocultores optam por híbridos com alto teto produtivo.

bitstream/item/70667/1/Milhoculturores-optam.pd

Comportamento de cultivares de feijão (Phaseolus vulgaris L.) a Isariopsis griseola.

Para se estudar a reaçãO de cultivares de feijão à mancha angular e obter possíveis fontes de resistência, instalou-se um ensaio constando de variedades do Viveiro Nacional de Mancha Angular do CNPAF-EMBRAPA/IPA, no Campo Experimental de Caruaru- PE, no perlodo de 1978-80

Agentes bio-controladores do Cururuquê no cultivo de 2º ano do algodoeiro colorido.

Agentes bio-controladoresbitstream/CNPA/19618/1/COMTEC210.PD