Potencial de extractos fraccionados de plantas para controlar o gorgulho do milho
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Potencial de extractos fraccionados de plantas para controlar o gorgulho do milho

Potencial de extractos fraccionados de plantas para controlar o gorgulho do milho


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About the Book

A segurança alimentar é primordial para todas as nações. Os insecticidas botânicos estão entre as alternativas mais promissoras aos sintéticos para a proteção de produtos armazenados. Foram testados extractos fraccionados de Ocimum canum e Laggera pterodonta, utilizando ciclo-hexano, acetona e metanol como solventes, em adultos de Sitophilus zeamais (Motschulsky), relativamente à mortalidade, inibição da produção de descendentes, dissuasão da alimentação e repelência. Os extractos fraccionados de folhas secas em pó de Ocimum canum foram obtidos por maceração. A mortalidade dos adultos foi registada 1, 7 e 14 dias após a exposição. Em geral, todas as fracções apresentaram uma atividade inseticida apreciável que aumentou com a dosagem e o período pós-tratamento. Todas as fracções foram bastante activas e a atividade inseticida aumentou com a dose e o período de exposição. A promoção de extractos naturais fraccionados de Ocimum canum e Laggera pterodonta como protectores de grãos armazenados nos Camarões aumentaria a segurança alimentar, aliviaria a pobreza e reduziria a degradação ambiental. O objetivo deste livro é sensibilizar para a natureza devastadora das pragas de armazenamento e para a necessidade de utilização de plantas pelos agricultores como alternativas aos insecticidas químicos.


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Product Details
  • ISBN-13: 9786207985708
  • Publisher: KS Omniscriptum Publishing
  • Binding: Paperback
  • Language: Portuguese
  • Returnable: N
  • Weight: 163 gr
  • ISBN-10: 6207985702
  • Publisher Date: 25 Aug 2024
  • Height: 229 mm
  • No of Pages: 68
  • Spine Width: 4 mm
  • Width: 152 mm


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