Split Plot Experiments
Mostrando 13-24 de 45 artigos, teses e dissertações.
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13. Seeding density in wheat: the more, the merrier?
Adjustment of seeding schemes is one of the crop management techniques that most influences grain yield components. This work aimed to characterize the potential grain yield and its components in wheat (Triticum aestivum L.) genotypes with contrasting tillering ability under different seeding densities and environments. Five experiments were conducted in spl
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-06
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14. Valor nutricional do feno de Brachiaria decumbens em três idades
Brachiaria decumbens forage is one well adapted to climate and soil conditions in Brazil, but focuses much of its dry matter production at certain times of year. The making hay of this plant enables supplementation of livestock during seasonal scarcity of fodder. The objective was to evaluate the nutritive value of Brachiaria decumbens hay cut at ages 56, 84
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/12/2011
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15. Influência da adubação nitrogenada e avaliação do estado de nitrogênio do arroz irrigado / Influence of nitrogen fertilization and assessment of nitrogen on irrigated rice fields
Experiments were carried out at the Experimental Station of the Federal University of Viçosa, Viçosa City, Minas Gerais State, Brazil, in 2008/09 crop, in order to investigate four tropical irrigated rice cultivars, subjected to six nitrogen doses for nitrogen use efficiency, nutrient uptake, grains productivity, and benefited grains produtivity. In additi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2011
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16. Resposta do arroz de terras altas a diferentes doses de carvão vegetal: desenvolvimento da planta e deficiência hídrica / Resposta do arroz de terras altas a diferentes doses de carvão vegetal: desenvolvimento da planta e deficiência hídrica / Response of upland rice to different doses of charcoal, plant development and water deficit / Response of upland rice to different doses of charcoal, plant development and water deficit
The average national rice yield was 11,3 million tones, with a harvested area of about 2,7 million hectares (IBGE 2010). Part of this comes from upland production systems in savannas that have high acidity, low fertility, with low phosphorus and potassium levels, low cation exchange capacity and high aluminum saturation. Upland rice in the Brazilian savannas
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/02/2011
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17. Comparacao entre duas estatisticas para testar a hipotese de igualdade de coeficientes de regressao.
Neste trabalho, e apresentado o Teste da Razao de Maxima Verossimilhanca para testar a hipotese de igualdade de coeficientes de regressao. Ele e comparado mediante simulacao e dados experimentais, com a estatistica t, usualmente sugerida na literatura. A comparacao entre os poderes de ambos os testes indica que o Teste da Razao de Maxima Verossimilhanca pode
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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18. Reação de genótipos de soja e milho ao nematóide das lesões radiculares Pratylenchus brachyurus / Reaction of soybean and corn genotypes to the root lesion nematode Pratylenchus brachyurus
The soybean crop (Glycine max L. Merr.) is present in practically every Brazilian state occupying an area of 23 million ha. The Central West Region is considered the greatest grain producer. The annual losses due to diseases are estimated around 15% and 20%. Among the main crop diseases in the Cerrados region, the ones caused by nematodes, especially H. glyc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/03/2010
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19. FUNGICIDE AND NITROGEN MANAGEMENT IN WHEAT AND ITS EFFECTS ON YIELD AND GRAIN QUALITY / MANEJO DE FUNGICIDAS E NITROGÊNIO EM TRIGO E SEUS EFEITOS NA PRODUTIVIDADE E QUALIDADE DE GRÃOS
The wheat crop is severely attacked by diseases, which significantly reduce its profitability. The diseases reduce not only productivity but also quality, factor that is essential for the actual economic culture viability. In order to analyze which factors regarding chemical control of foliar diseases are essential to allow bread wheat varieties express the
Publicado em: 2010
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20. Effect of cage density on the performance of 25- to 84-week-old laying hens
Three experiments were carrie out to evaluate the influence of cage density on the performance of 25- to 84-week-old laying hens. Forty hundred Lohmann-LSL layers were distributed in cages (100x40x 45x50cm) according to a completely randomized experimental design with split plot in time.Three treatments (10, 12, or 14 hens per cage, corresponding, to 450, 37
Revista Brasileira de Ciência Avícola. Publicado em: 2009-12
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21. Ação de produtos químico in vitro, em mudas e em campo sobre a mancha bacteriana (Xanthomonas perforans e X. gardneri) em tomate para processamento industrial / Chemical control of the bacterial spot in tomato for industrial processing: sensibility in isolated vitro and efficiency of products in seedlings and in field
The search of alternative products for tomato bacterial spot has been promoting by the lack of effectiveness registered by the traditional products available. The objective of this work was to evaluate a range of chemical products by in vitro tests, in experiments seedlings and field experiments. The products studied were: acibenzolar-S-methyl; benzalkonium
Publicado em: 2009
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22. Production and morphogenetic characteristics of Brachiaria brizantha cv. Xaraes under fertigated and conventional fertilization conditions in Brazil / Produção e características morfogênicas da Brachiaria brizantha cv. Xaraés com adubação convencional e fertirrigação na região Leste de Minas Gerais
The Eastern of Minas Gerais State is a traditional region in cattle, which exerts strong influence on the regional economy, with the need to develop grazing systems associated with the practice of irrigation. Experiments had been conducted in order to evaluate the forage grasses traditionally used in the region under irrigation. The results showed that the B
Publicado em: 2009
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23. Estudo de desempenho de mÃtodos de Lenth na anÃlise de planos do tipo split-plot na ausÃncia de rÃplicas
No meio industrial à comum a utilizaÃÃo de experimentos como parte de programas de qualidade. Devido a restriÃÃes de custo, tais experimentos precisam ser cuidadosamente planejados de forma a atender aos objetivos com o mÃnimo de recursos. Para tanto, frequentemente sÃo executados experimentos sem rÃplicas, com planos experimentais complexos e estrut
Publicado em: 2008
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24. Asexual propagation of ornamental cherry tree (Prunus serrulata Lindl.) / PROPAGAÃÃO ASSEXUADA DE CEREJEIRA ORNAMENTAL (PRUNUS SERRULATA LINDL.)
Despite the potential that the ornamental cherry tree offers for the urban forestation, studies about propagation methods of the species are scarce. Due to this fact, the objectives of the work were to evaluate the vegetative propagation of this species, searching for the best type of grafting and forcing method in the percentage of tissue union of the graft
Publicado em: 2008