Levantamento de plantas daninhas na cultura do cajueiro nos baixoes agricolas piauienses.

Levantamento de plantas daninhas na cultura do cajueiro nos baixoes agricolas piauienses.bitstream/CNPAT/7855/1/ct_89.pd

Bioatividade de extratos de sisal (Agave Sisalana Perrine ex Engelm) sobre a oviposição de Ceratitis Capitata (Wiedemann, 1824) (DípTERA: Tephritidae).

O Brasil é terceiro maior produtor de frutas do mundo, perdendo apenas para a China e índia, produz frutas tropicais, subtropicais e temperadas. Um dos maiores problemas encontrados pela fruticultura internacional, são espécies de praga s pertencentes à família dos tefritídeos

MANEJO de caprinos leiteiros na agricultura familiar.

Manejo das crias; Manejo das matrizes; Manejo sanitário; Escolha das raças. Equipe Técnica: Adriana Mello de Araújo, Tânia Maria Leal, Raimundo Bezerra de Araújo Neto, Robério dos Santos Sobreira, Francisco das Chagas Monteiro.bitstream/item/104135/1/Manejo-de-caprinos0001.pd

O capim-massai no Meio-Norte.

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Selecting thermal tolerant strains of entomopathogenic fungi to control Ceratitis capitata (Wiedeman) in tropical semi-arid conditions.

Although it is usual, using constant temperature to select thermo-tolerant entomopathogen (EF) strains could discard potentially efficient biocontrol agents (BCA). The objectives of this work were to select virulent EF against C. capitata and evaluate the effect of continual and fluctuating temperature on fungal development and virulence. Initial experiments compared the effect of constant temperatures (CT) (20, 25, 30, 35, and 38 ?C) and simulated intraday temperature variation (SIV) (20?38 ?C) over conidial germination, mycelial growth, and insect mortality. Temperatures ? 35 ?C in the CT experiments significantly reduced conidial germination, and the strains of Beauveria bassiana BbLCB81 and BbLCB289 showed the highest conidial germination and mycelial growth. SIV also caused a significant effect, and M. anisopliae MaLCB62 showed the highest conidial germination and mycelial growth. Applying EF strains as toxic baits in CT showed that the highest mortality occurred at 30 ?C, and BbLCB62 and BbLCB289 showed the largest insect mortality at 38 ?C. Survival analysis showed a slight increase in the average survival time (ST50) at 30 ?C. In SIV conditions, MaLCB56 and BbLCB289 were highly virulent. In a field cage experiment at a warmer temperature, BbLCB62 was the most virulent strain according to the M-C test comparing survival curves. However, confirmed accumulated mortality on the 10th day was similar to the moderately tolerant BbLCB289 (Tukey, p < 0.05). During winter, all EF strains showed similar mortality on 10th day (Tukey, p < 0.05), but a significant difference in the survival analysis. EF strains with mild temperature tolerance can be applied in seasons with high temperatures, and BbLCB62 and BbLCB289 were selected as potential biocontrol agents against C. capitata

Oportunidades e desafios da bovinocultura de corte no Estado do Piauí.

Retrospectiva; Oportunidades; Manejo atual da pastagem e do rebanho; Potencial das pastagens nativas; Manejo da pastagem nativa de mimoso; Desafios.bitstream/item/35885/1/Doc70.pd