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29,203 Research products, page 1 of 2,921

  • Rural Digital Europe
  • Open Access
  • LAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas Latinoamericanas

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  • Open Access English
    Authors: 
    Yonny Martínez-López; Juarez Benigno Paes; Fabricio Gomes Gonçalves; Emilio Martínez-Rodríguez; Pedro Nicó de Medeiros Neto;
    Publisher: Universidade Federal Rural do Rio de Janeiro

    Abstract This research aims to evaluate the physico-mechanical properties of wood-plastic composites produced with recycled polyethylene terephthalate, high-density polyethylene, low-density polyethylene and polypropylene, and sawdust from the following species: Pinus c...

  • Open Access Portuguese
    Authors: 
    Andre Roberto Maehler; José Antonio Costa; João Leonardo Fernandes Pires; Lisandro Rambo;
    Publisher: Universidade Federal de Santa Maria

    A soja apresenta elevada demanda por nitrogênio devido ao alto teor protéico dos grãos, de cerca de 40%, o que a torna de grande importância econômica. Este trabalho teve como objetivo determinar o efeito da disponibilidade hídrica e arranjo de plantas sobre a qualidade...

  • Open Access Portuguese
    Authors: 
    Ricardo Borges Pereira; F. M. Aguiar; Tiago Bezerra Torres; Geovani Bernardo Amaro; Gilvaine Ciavareli Lucas; Jadir Borges Pinheiro;
    Publisher: Associação Brasileira de Horticultura

    RESUMO Phytophthora capsici causa prejuízos significativos em cultivos de abóbora (Cucurbita moschata) e morangas (Cucurbita maxima), incluindo a podridão de raízes e coroa, o crestamento foliar e a podridão de frutos, o que pode resultar em até 100% de perdas na produç...

  • Open Access
    Authors: 
    Davi Lopes do Carmo; Carlos Alberto Silva; José Maria de Lima; Gabriela Lúcia Pinheiro;
    Publisher: FapUNIFESP (SciELO)

    ABSTRACT Soil solution samplers may have the same working principle, but they differ in relation to chemical and physical characteristics, cost and handling, and these aspects exert influence on the chemical composition of the soil solution obtained. This study was carr...

  • Open Access
    Authors: 
    Dongmei Zhu; Kun Yang; Ning Sun; Weimin Wang; Xiaoyun Zhou;
    Publisher: Zenodo

    The topmouth gudgeon, Pseudorasboraparva (Temminck & Schlegel, 1842), is a small cyprinid fish that inhabits the littoral zones of freshwater habitats throughout Asia and Europe. It is regarded as an invasive species in Europe, but in its native range, in China,...

  • Open Access English
    Authors: 
    Gheorghe Cristian Popescu; Monica Popescu;
    Publisher: Instituto Agronômico de Campinas

    ABSTRACT Environmentally friendly grape growing is an important objective of modern viticulture. The aim of the study was to examine the response of two grapevine Vitis vinifera L. cultivars to humic acids (HA) foliar application as biostimulant in order to provide sust...

  • Open Access English
    Authors: 
    Carmo Horta;
    Publisher: Departamento de Engenharia Agrícola - UFCG

    ABSTRACT The objective of this study was to assess the type and fractions of phosphorus (P) forms in composts and struvite and how these P forms affect the bioavailability of P in the soil. P fertilization was performed with compost from sewage sludge (CSS), compost fro...

  • Open Access English
    Authors: 
    Gustavo Migliorini de Oliveira; Marcelo Giovanetti Canteri; Otavio Jorge Grigoli Abi Saab;
    Publisher: Universidade Federal de Santa Maria

    ABSTRACT: The aim of this study was to investigate the effects of air-assisted boom sprayers and addition of adjuvants in the spray solution on control levels of pesticide sprays against weeds and pathogenic fungi by meta-analysis of scientific literature. To perform th...

  • Open Access English
    Authors: 
    Melissa M. Arcand; Kim D. Schneider;
    Publisher: Academia Brasileira de Ciências

    Deficiency in plant-available phosphorus is considered to be a major limiting factor to food production in many agricultural soils. Mineral resources are necessary to restore soil phosphorus content. In regions where conventional fertilizers are not used due to cost lim...

  • Open Access English
    Authors: 
    Daniel Henrique Breda Binoti; Paulo Junio Duarte; Mayra Luiza Marques da Silva; Gilson Fernandes da Silva; Helio Garcia Leite; Adriano Ribeiro de Mendonça; Valdir Carlos Lima de Andrade; Andreina Epifanía Dávila Vega;
    Publisher: Sociedade de Investigações Florestais

    ABSTRACT The aim of this study was to evaluate the method of neuroevolution of augmenting topologies (NEAT) to adjust the weights and the topology of artificial neural networks (ANNs) in the estimation of tree height in a clonal population of eucalyptus, and compare wit...