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Download Resistencia De Variedades De Mandioca Ao Percevejo De Renda Vatiga Illudens Drake 1922 full books in PDF, epub, and Kindle. Read online Resistencia De Variedades De Mandioca Ao Percevejo De Renda Vatiga Illudens Drake 1922 ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author : G. W. Cosenza
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (79 download)
Download or read book Resistencia de variedades de mandioca ao percevejo de renda, Vatiga illudens (Drake, 1922). written by G. W. Cosenza and published by . This book was released on 1981 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : CIAT
ISBN 13 : 9788489206687
Total Pages : 324 pages
Book Rating : 4.2/5 (66 download)
Download or read book Cassava Breeding written by and published by CIAT. This book was released on 1987 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. A. S. Oliveira
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (78 download)
Download or read book Dinâmica populacional do percevejo-de-renda (Vatiga iludens) na cultura da mandioca no Distrito Federal written by M. A. S. Oliveira and published by . This book was released on 2001 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Este trabalho refere-se a dinâmica populacional do percevejo-de-renda, Vatiga illudens (Drake, 1922) (Hemiptera: Tingidae) da mandioca (Manihot esculenta Crantz) no Distrito Federal no período de 1994 a 1997. Dentro da área util de parcela do experimento, foram efetuadas amostragens quinzenais durante o ciclo da cultura, utilizando-se da seguinte técnica: de cada cinco plantas previamente marcadas, colhia-se uma folha e contava-se o número de ninfas e adultos nela depositados. O nível de dano do percevejo-de- renda foi avaliado com base na ocorrência dos sintomas do ataque dos insetos nas folhas das plantas em escala de notas crescentemente de 0 a 5. Os resultados mostram que as variedades mansas (Mantiqueira e Jacana) são as mais infestadas e as bravas (IAC-12829 e EAB-629) as menos infestadas pelo percevejo-de-renda. A maior ocorrência da praga concentra-se no primeiro semestre do ano. Apesar da eficiência do inseticida no controle do percevejo-de-renda, conforme demostrado no presente trabalho, recomenda-se o uso de variedades tolerantes com o controle mais adequado.
Author : M.A.S. Oliveria
Publisher :
ISBN 13 :
Total Pages : 73 pages
Book Rating : 4.:/5 (79 download)
Download or read book Influencia do estado nutricional da mandioca (Manihot esculenta Crantz) sobre ninfas e adultos do percevejo-de-renda, Vatiga illudens) (Drake, 1922) (Hemiptera written by M.A.S. Oliveria and published by . This book was released on 1987 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: Avalia a influencia do estado nutricional da planta da mandioca ao percevejo-de-renda, Vatiga illudens submetida a tres niveis de fosforo(50,100 e 200 kg de P2O5/ ha) e tres niveis de agua(40,60 e 80%) do volume total de poros ocupados por agua. Utilizou-se delineamento experimental, em blocos casualizados, em esquema fatorial 3x3, com quatro repeticoes. Verificou-se ocorrencia de cinco instares e que o numero de ninfas foi influenciado pelos niveis de agua, sendo que 40 e 60% de umidade proporcionaram acrescimos nos teores de nitrogenio na planta aos 60 dias; maior numero de ninfas; maior duracao de ninfas do 3o. 4o. e 5o. instares; e maior duracao do periodo ninfal. Alem disso, houve maior numero e longevidade de adultos e longevidade total, enquanto que o solo submetido a 80% de agua originou menores teores de nitrogenio na planta aos 90 dias, ocasiao em que se obteve uma maior mortalidade dos insetos. Em media, a aplicacao de 100kg de P2O5ha submetido a 40% de umidade no solo proporcionou maior numero de insetos adultos, sendo que destes 64% foram femeas. Niveis de fosforo nao influenciaram comportamento biologico dos insetos, mas afetaram positivamente caracteristicas agronomicas das plantas, e aplicacao de 200kg de P2O5/ha produziu acrescimos significativos na producao de materia seca da parte aerea aos 60 e 90 dias de idade. Nivel 60% de agua, a semelhanca do que ocorreu com comportamento dos insetos, proporcionou melhores rendimentos de materia seca da parte aerea aos 60 e 90 dias do plantio.
Author : N. S. Butter
Publisher :
ISBN 13 : 9780367559076
Total Pages : 0 pages
Book Rating : 4.5/5 (59 download)
Download or read book A Monograph on Whiteflies written by N. S. Butter and published by . This book was released on 2024-01-29 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is complex species known to contain biotypes namely, New World (Biotype -A), B- biotype MEAM1 (Biotype-B or Bemisia argentifolii, and MED (Biotype-Q) depending upon the geographical location. The complete information on the bio-ecology of important species along with the feeding mechanism has been presented in this book.
Author : Jorge Hendrichs
Publisher : CRC Press
ISBN 13 : 1000393461
Total Pages : 1028 pages
Book Rating : 4.0/5 (3 download)
Download or read book Area-wide Integrated Pest Management written by Jorge Hendrichs and published by CRC Press. This book was released on 2021-02-01 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over 98% of sprayed insecticides and 95% of herbicides reach a destination other than their target species, including non-target species, air, water and soil. The extensive reliance on insecticide use reduces biodiversity, contributes to pollinator decline, destroys habitat, and threatens endangered species. This book offers a more effective application of the Integrated Pest Management (IPM) approach, on an area-wide (AW) or population-wide (AW-IPM) basis, which aims at the management of the total population of a pest, involving a coordinated effort over often larger areas. For major livestock pests, vectors of human diseases and pests of high-value crops with low pest tolerance, there are compelling economic reasons for participating in AW-IPM. This new textbook attempts to address various fundamental components of AW-IPM, e.g. the importance of relevant problem-solving research, the need for planning and essential baseline data collection, the significance of integrating adequate tools for appropriate control strategies, and the value of pilot trials, etc. With chapters authored by 184 experts from more than 31 countries, the book includes many technical advances in the areas of genetics, molecular biology, microbiology, resistance management, and social sciences that facilitate the planning and implementing of area-wide strategies. The book is essential reading for the academic and applied research community as well as national and regional government plant and human/animal health authorities with responsibility for protecting plant and human/animal health.
Author : B.K. Tyagi
Publisher : Scientific Publishers
ISBN 13 : 9386237458
Total Pages : 315 pages
Book Rating : 4.3/5 (862 download)
Download or read book Pests of Forest Importance and Their Management written by B.K. Tyagi and published by Scientific Publishers. This book was released on 2014-06-01 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: PESTS OF FOREST IMPORTANCE AND THEIR MANAGEMENT is a unique book comprising all the major components of a sylvatic ecosystem from the standpoint of pests of economic importance and their control using both conventional and modern applications. The book is a compilation of 15 specialist articles woven around the central theme of the objective envisaging a variety of forest arthropod pests including both insects and arachnids as well as vertebrates. The book, written in a lucid and clearly comprehensible style, consists of closely knitted articles on taxonomy, biology, economic forestry, ecology, biogeography, prevention and control of the forest products from the pest attack, which all make an interesting reading and will hopefully serve a good purpose of a reference work for both a serious researcher and the amateur naïve enthusiast.
