Split Plot Experiments
Mostrando 1-12 de 45 artigos, teses e dissertações.
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1. Direct onion sowing under soil tillage methods
ABSTRACT Onion production is conditioned to the adopted techniques during the cultivation. Sowing depth, soil preparation and cultivars are determinant factors for productivity to be increased. Two experiments were developed, the first with the objective of evaluating the effect of sowing depths and soil preparation methods on the germination and development
Revista Ceres. Publicado em: 2022
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2. The use of pre-emergence herbicides in cassava decreases the need of manual weeding
ABSTRACT Weed management consists of a fundamental practice in cassava, with mechanical and chemical control widely used. The objective of this work was to evaluate the efficacy of pre-emergence herbicides, as well as to determine the interaction of these with weeding complementation in the weed management in cassava. Two experiments were conducted in Junque
Rev. Ceres. Publicado em: 2020-06
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3. Rooting of sweet potato seedlings submitted to supplemental calcium and phosphorus nutrition on substrate
RESUMO O objetivo deste estudo foi avaliar o enraizamento e crescimento de mudas de batata-doce em bandejas em reposta à suplementação do substrato com cálcio (Ca) e fósforo (P). Foram conduzidos dois experimentos em casa de vegetação no delineamento de blocos casualizados em esquema de parcelas subdivididas com oito repetições. No experimento com C
Rev. bras. eng. agríc. ambient.. Publicado em: 14/10/2019
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4. Contribution of corn intercropped with Brachiaria species to nutrient cycling1
RESUMO A dinâmica de biomassa e nutrientes do milho pode ser alterada quando consorciado com Brachiaria (syn. Urochloa spp.). Objetivou-se investigar a dinâmica de biomassa, nitrogênio (N), fósforo (P) e potássio (K) para sistemas de produção de milho consorciado com espécies de Brachiaria. Campos experimentais foram conduzidos durante a safra e safr
Pesqui. Agropecu. Trop.. Publicado em: 26/09/2019
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5. Timing and growing conditions of nitrogen topdressing influence the grain yield and protein content of four wheat cultivars
ABSTRACT The application of an adequate rate and splitting of nitrogen is essential for wheat grain yield and protein content. The aim of this work was to adjust nitrogen management approaches regarding agronomic performance and protein content of wheat cultivars in various environments. Field experiments were conducted under no-tillage system on soybean mul
Bragantia. Publicado em: 08/08/2019
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6. Artificially cooling of onion bulbs stored in brickwork-patterned vertical silos
RESUMO A cebola é a terceira hortaliça mais consumida no mundo, ao lado da batata e do tomate. Sua conservação é influenciada pela umidade e temperatura e, as maiores perdas pós-colheita ocorrem devido à falta de infraestrutura no armazenamento. O objetivo do presente trabalho foi avaliar o efeito do resfriamento parcial de silo vertical na conservaç
Hortic. Bras.. Publicado em: 18/07/2019
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7. Damage caused by Meloidogyne javanica and Pratylenchus zeae to sugarcane cultivars
RESUMO Nematoides são importantes parasitos da cana-de-açúcar, reduzindo significantemente a produtividade e a longevidade da cultura. Os danos causados por eles variam com a suscetibilidade da cultivar, razão pela qual é importante para os produtores conhecer a resposta dos novos genótipos, a fim de direcionar as medidas de controle. Assim, o objetivo
Summa phytopathol.. Publicado em: 10/07/2019
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8. Influence of Density and Development Stage of Ryegrass on Glyphosate Effectiveness
RESUMO: Glyphosate é um dos principais herbicidas utilizados controle de azevém. O objetivo desta pesquisa foi avaliar como a curva de resposta à dose de glyphosate é afetada por densidade populacional de azevém e estádio de desenvolvimento das plantas. Para atender este objetivo foram realizados dois experimentos em casa de vegetação (um com Lolium
Planta daninha. Publicado em: 06/05/2019
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9. Modern High-Yielding Maize, Wheat and Soybean Cultivars in Response to Gypsum and Lime Application on No-Till Oxisol
ABSTRACT Modern maize, wheat, and soybean cultivars are usually characterized by a short cycle, high shoot-root ratio, and high responsiveness to nutrient input. Continuous no-tillage management (NTS) frequently leads to a steep gradient in soil chemical quality with depth, thus decreasing yield under conditions of acid subsoil and water stress. This study a
Rev. Bras. Ciênc. Solo. Publicado em: 09/11/2017
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10. Mitigation of the Gradient of Chemical Properties in the Rooting Zone of Dystrophic Oxisols by Gypsum and Lime Inputs under a No-Till System
ABSTRACT Improvement of soil chemical properties in dystrophic Oxisols managed under long-term no-tillage system (NTS) with surface broadcast lime has been, frequently, restricted to a shallow topsoil layer. As a consequence, a sharply-defined chemical quality gradient is created, with deterioration from the surface towards deeper layers in Oxisols in southe
Rev. Bras. Ciênc. Solo. Publicado em: 22/06/2017
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11. An Evaluation of the Use of Statistical Procedures in Soil Science
ABSTRACT Experimental statistical procedures used in almost all scientific papers are fundamental for clearer interpretation of the results of experiments conducted in agrarian sciences. However, incorrect use of these procedures can lead the researcher to incorrect or incomplete conclusions. Therefore, the aim of this study was to evaluate the characteristi
Rev. Bras. Ciênc. Solo. Publicado em: 29/08/2016
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12. Residual recovery and yield performance of nitrogen fertilizer applied at sugarcane planting
ABSTRACTThe low effectiveness of nitrogen fertilizer (N) is a substantial concern that threatens global sugarcane production. The aim of the research reported in this paper was to assess the residual effect of N-fertilizer applied at sugarcane planting over four crop seasons in relation to sugarcane crop yield. Toward this end three field experiments were es
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-12