Influência do Extrato Pirolenhoso no desenvolvimento e crescimento de plantas de milho
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Data
2010-07-23
Autores
Silveira, César Martoreli da [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
O extrato pirolenhoso (EP) é um subproduto oriundo da condensação de compostos da fumaça produzida durante o processo de produção de carvão vegetal. O EP tem em sua composição compostos bioativos que podem influenciar na germinação e no vigor de sementes. Dessa forma, o objetivo do trabalho foi avaliar a influência de diferentes concentrações de EP na cultura do milho, em sementes, no desenvolvimento inicial das plantas e no campo. Foram utilizadas 5 concentrações de EP aplicadas nas sementes: 0, 25, 50, 75 e 100% em solução (10 mL kg-1 de sementes), avaliando sua influência na germinação e no vigor através dos testes de germinação, primeira contagem de germinação, índice de velocidade de emergência, comprimento de plântulas, massa seca de plântulas, em laboratório, com 5 repetições em delineamento inteiramente casualizado (DIC) e, o teste de emergência em campo, com 4 repetições em delineamento em blocos casualizados (DBC). O desenvolvimento inicial das plantas de milho foi avaliado em casa de vegetação, com cultivo em vasos contendo 7 dm3 de solo, com duas plantas por vaso, utilizando-se 5 concentrações de EP aplicadas nas sementes: 0, 25, 50, 75 e 100%; via solo: 0, 0,5, 1,0, 1,5 e 2,0% (v v-1) e foliar: sem aplicações, 0,15 (aos 10, 20 e 30 dias após a emergência - DAE) e 0,2% (aos 40 DAE), 0,3 e 0,4%, 0,45 e 0,6% e 0,6 e 0,8% (v v-1), sendo utilizadas 5 repetições em DIC, verificando a influência do EP aos 55 DAE. Em campo, foram realizados dois experimentos, nas safras 2007/2008 e 2008/2009, sendo utilizadas 5 concentrações de EP aplicadas nas sementes: 0, 25, 50, 75 e 100%; via solo: 0, 2, 4, 6 e 8 L ha-1 e foliar: sem aplicações, 0,6 (10, 20 e 30 DAE) e 0,8 L ha-1 (40 DAE), 1,2 e 1,6 L ha-1, 1,8 e 2.4 L ha-1 e 2,4 e 3,2 L ha-1, avaliando sua influência nas características agronômicas, nos componentes da produção...
The pyroligneous acid (PA) is a byproduct comes from the condensation of smoke compounds produced during the process of charcoal production. The PA contains bioactive compounds that may influence of germination and seed vigor. Thus, the objective this research was to evaluate the influence of different concentrations of PA in seeds, in the initial corn development and field. Were used five concentrations of EP applied to seeds: 0, 25, 50, 75 and 100% solution (10 mL kg-1 seed), evaluating their influence on germination and vigor by germination, speed of emergence index, first germination count, dry matter weight, seedling length tests in the laboratory, with five replications in a complete randomized design (CRD), and field seedling emergence test with four replications in randomized block design (RBD). The initial development of corn plants was evaluated in a greenhouse, with cultivation in pots containing 7 dm3 of soil, two plants per pot, using five concentrations of PA applied to seeds: 0, 25, 50, 75 and 100 %, in soil: 0, 0.5, 1.0, 1.5 and 2.0% (v v-1) and leaves: no applications, 0.15 (10, 20 and 30 days after emergence - DAE) and 0.2% (40 DAE), 0.3 and 0.4%, 0.45% and 0.6 and 0.6 and 0.8% (v v-1), using five replications in CRD, verifying the influence of PA 55 DAE. In the field, two experiments were conducted in 2007/2008 and 2008/2009 seasons, using five concentrations of PA applied to seeds: 0, 25, 50, 75 and 100%, in soil: 0, 2, 4, 6 and 8 L ha-1 and leaves: no applications, 0.6 (10, 20 and 30 DAE) and 0.8 L ha-1 (40 DAE), 1.2 and 1.6 L ha-1, 1,8 and 2.4 L ha-1 and 2.4 and 3.2 L ha-1 to evaluate its influence on agronomic traits, yield components and corn yield, with four replications in RBD, for the first season. In the second, were used four concentrations of PA applied to seeds: 0, 25, 50 and 100%, in soil: 0, 2, 4 and 8 L ha-1 and leaves: no applications... (Complete abstract click electronic access below)
The pyroligneous acid (PA) is a byproduct comes from the condensation of smoke compounds produced during the process of charcoal production. The PA contains bioactive compounds that may influence of germination and seed vigor. Thus, the objective this research was to evaluate the influence of different concentrations of PA in seeds, in the initial corn development and field. Were used five concentrations of EP applied to seeds: 0, 25, 50, 75 and 100% solution (10 mL kg-1 seed), evaluating their influence on germination and vigor by germination, speed of emergence index, first germination count, dry matter weight, seedling length tests in the laboratory, with five replications in a complete randomized design (CRD), and field seedling emergence test with four replications in randomized block design (RBD). The initial development of corn plants was evaluated in a greenhouse, with cultivation in pots containing 7 dm3 of soil, two plants per pot, using five concentrations of PA applied to seeds: 0, 25, 50, 75 and 100 %, in soil: 0, 0.5, 1.0, 1.5 and 2.0% (v v-1) and leaves: no applications, 0.15 (10, 20 and 30 days after emergence - DAE) and 0.2% (40 DAE), 0.3 and 0.4%, 0.45% and 0.6 and 0.6 and 0.8% (v v-1), using five replications in CRD, verifying the influence of PA 55 DAE. In the field, two experiments were conducted in 2007/2008 and 2008/2009 seasons, using five concentrations of PA applied to seeds: 0, 25, 50, 75 and 100%, in soil: 0, 2, 4, 6 and 8 L ha-1 and leaves: no applications, 0.6 (10, 20 and 30 DAE) and 0.8 L ha-1 (40 DAE), 1.2 and 1.6 L ha-1, 1,8 and 2.4 L ha-1 and 2.4 and 3.2 L ha-1 to evaluate its influence on agronomic traits, yield components and corn yield, with four replications in RBD, for the first season. In the second, were used four concentrations of PA applied to seeds: 0, 25, 50 and 100%, in soil: 0, 2, 4 and 8 L ha-1 and leaves: no applications... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Germination, crop yield, Wood vinegar, Vigor, Zea mays L., Germinação, Produtividade, Ácido pirolenhoso, Vigor, Zea mays L.
Como citar
SILVEIRA, César Martoreli da. Influência do Extrato Pirolenhoso no desenvolvimento e crescimento de plantas de milho. 2010. xvi, 75 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, 2010.