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| Registros recuperados: 20 | |
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| ALVES, B. J. R.; ZOTARELLI, L.; ARAÚJO, E. S.; FERNANDES, F. M.; HECKLER, J. C.; MEDEIROS, A. F. A.; BODDEY, R. M.; URQUIAGA, S.. |
| Matéria seca e N total. Quantificação da FBN eficiência do uso de N fertilizante. Balanço de N para as culturas. Resultados e discussão. Quantificação da FBN para a cultura da soja. Eficiência da fertilização. Balança de N para as culturas. O objetivo do presente estudo foi avaliar o impacto da fixação biológica de nitrogênio (FBN) na cultura da soja e a eficiência do uso de fertilizantes nitrogenados pelas culturas do milho e algodão sobre o balanço de N dos solo. O experimento foi realizando em Latossolo Vermelho distroférrico, na área experimental da Embrapa agropecuária oeste, em dourados, MS. Todas as culturas foram conduzidas em uma área onde se iniciou o plantio direto. No primeiro ano , as culturas do milho e algodão receberam 115kg N há-1 ,... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Balanço de nitrogênio; Fixação biológica de nitrogênio; FBN; Zero tillage; Direct sowing; Rotational cropping; Biological nitrogen fixation; BNF; Soybean; Maize.; Algodão; Milho; Plantio Direto; Rotação de Cultura; Soja.; Cotton; Nitrogen balance.. |
| Ano: 2005 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/626863 |
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| OLIVEIRA,A.P.P.; PEREIRA,S.R.; CÂNDIDO,A.C.S.; LAURA,V.A.; PERES,M.T.L.P.. |
| ABSTRACT Tree establishment in pasture areas can be inhibited, at least in part, by exotic grasses allelopathy and this can represent an important limitation by changing the patterns of both germination and seedling growth of tree species. This study aims to evaluate the allelopathic potential of Urochloa brizantha and U. decumbens on germination, growth and metabolism of Guazuma ulmifolia seedlings. We performed bioassays evaluating the effect of the crude ethanol extract and semipurified fractions (hexane fraction, ethyl acetate fraction and ethanol-water fraction) of U. brizantha and U. decumbens using completely randomized design, with four concentrations (0, 250, 500, 1,000 mg L-1) and four replications. The variables analyzed were germination... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Guazuma ulmifolia; Interference competition; Exotic grasses; Direct sowing; Restoration; Urochloa. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000400639 |
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| Mendonça,Veridiana Z. de; Mello,Luiz M. M. de; Pereira,Francisco C. B. L.; Silva,José O. da R.; Yano,Élcio H.. |
| Corn cropping for silage, due to the plant material exportation, intercropping with forage provides greater ground cover and straw formation for the Direct Planting System (DPS) continuity. The objective of this study was to evaluate corn production for silage in DPS intercropped with four forages (Urochloa brizantha cv. Marandu, U. ruziziensis cv. Ruziziensis, Panicum maximum cv. Tanzânia and P. maximum cv. Áries). We applied three sowing methods (in row together with corn fertilizer; by no-till sowing simultaneously to corn sowing and at V4 corn stage) and corn without intercropping. The experiment was conducted in autumn/ winter of 2010, in Selvíria - MS, in a randomized block design in factorial arrangement (4 x 3 + 1) and 4 replications. For corn, we... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Direct sowing; Interspecific competition; Sowing mode; Mulching. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000400013 |
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| De Grazia,Javier; Tittonell,Pablo Adrián; Salvador Perniola,Omar; Caruso,Ariel; Chiesa,Angel. |
| The advantages of transplanting with respect to direct sowing has been widely reported in several vegetable species, but there are few studies in Cucurbits, and even fewer in summer squash (Cucurbita maxima (Carr.) Millán var. zapallito). Morphological and physiological characteristics of hybrid varieties determine earliness of between 5 to 10 days compared to traditional cultivars. The aim of the study was to compare the summer squash setting systems, direct sowing and nursery seedlings, and to determine their effect on yield and earliness in different genotypes. The hybrid varieties F1 Angelo and Espejo, and the standard varieties Any and Any Plus were used combined with two setting systems (direct sowing and nursery seedlings). Male and female flowering... |
| Tipo: Journal article |
Palavras-chave: Transplant; Direct sowing; Hybrid; Variety; Yield. |
| Ano: 2005 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072005000200002 |
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| Colado,Maria Luciana Zequim; Reis,Letícia Koutchin; Guerra,Angélica; Ferreira,Bruno Henrique dos Santos; Fonseca,Diego Rezende; Timóteo,Amanda; Gondim,Evânia Xavier; Guerin,Natalia; Garcia,Letícia Couto. |
| ABSTRACT Ecological restoration by direct seeding in the Cerrado biome still lacks information about native species germination, the need for dormancy overcoming and seed bank formation. This study aims to verify the effects of dormancy overcoming on germination of four tree species and the ability of 12 tree species to form seed banks for restoration use. Our results showed wide variation of species’ germination rates. Overcoming dormancy enhanced germination for Dimorphandra mollis, Hymenaea stigonocarpa, and Peltophorum dubium and decreased it for Copaifera langsdorffii, but was only cost-effective for H. stigonocarpa. Regarding the ability to form seed banks, only H. stigonocarpa and Cecropia pachystachya germinated and live seedlings of Terminalia... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Direct sowing; Ecophysiology; Neotropical savanna; Restoration ecology; Seed photoblastism. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000400694 |
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| SANTOS, H. P. dos; FONTANELI, R. S.; SPERA, S. T.. |
| Densidade de semeadura e estresses durante o crescimento e desenvolvimento do milho; Rendimento de grãos de milho em sistemas de produção, sob plantio direto; Escolha de cultivar de milho; Efeito de sistemas de produção de grãos de milho na fertilidade do solo, sob plantio direto; Efeito de sistemas de produção de grãos de milho nos atributos físicos do solo, sob plantio direto; Principais doenças do milho; Insetos-praga da cultura do milho; Manejo e controle de plantas daninhas na cultura de milho, sob plantio direto; Silagem de milho; Conversão e balanço energético de sistemas de produção de grãos de milho, sob plantio direto; Análise econômica e de risco de sistemas de produção de grãos de milho, sob plantio direto. |
| Tipo: Sistema de Produção (INFOTECA-E) |
Palavras-chave: Direct sowing; No-till.; Corn.. |
| Ano: 2007 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/821543 |
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| Teixeira,Rafael B.; Borges,Monica C. R. Z.; Roque,Cassiano G.; Oliveira,Marcela P.. |
| ABSTRACT Soil management alters soil physical attributes and may affect crop yield. In order to evaluate soil physical attributes in layers from 0 to 0.40 m and soybean grain yield, in the 2012/2013 agricultural year, an essay was installed in the experimental area of the Federal University of Mato Grosso do Sul (UFMS/CPCS). Soil tillage systems were: conventional tillage (CT), minimum tillage (MT) and no tillage (DS), the cover crops used were millet, sunn hemp and fallow. The experimental design was randomized blocks with split plots. For the layer of 0.20-0.30 m, millet provided the best results for soil bulk density, macro and microporosity. The resistance to penetration (RP) was influenced in the layer of 0-0.10 m, and millet provided lower RP. The DS... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil resistance to penetration; Direct sowing; Soil density. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001201057 |
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| Registros recuperados: 20 | |
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