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| AZEVEDO, D. M. P. de; COSTA, N. de L.; FERREIRA, R. de P.. |
| Procurou-se determinar periodo critico de competicao entre plantas daninhas e cultura do arroz de sequeiro nas condições edafoclimáticas do município de Ouro Preto D'Oeste-RO. Utilizou-se arroz IAC-164, semeada em linhas espacadas de 0,5cm, sendo distribuidas 50 sementes/m linear. Delineamento experimental foi em blocos casualizados com quatro repeticoes. Cada parcela teve uma area de 15cm2(3,0 x 5,0m), com uma area util de 8,0m2 (2,0 x 4,0m). Foram avaliados os sequintes tratamentos: cultura linha de plantas daninhas ate 10,20,40,50 e 60 dias apos a emergencia e durante todo o ciclo; e com plantas daninhas ate 10,20,30,40,50 e 60 dias apos a emergencia e durante todo o ciclo. Concluiu-se que o periodo maximo permitido a presenca de invasoras na area... |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Embrapa Rondônia; Ouro Preto D'oeste (RO); Rondônia; Amazônia Ocidental; Western Amazon.; Arroz Sequeiro; Oryza Sativa; Erva Daninha; Rendimento; Campo Experimental.; Competição Biológica; Rice; Dryland farming; Rice; Plant competition; Crop yield.. |
| Ano: 1988 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/698024 |
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| Barrera-Violet,José Luis; Cartagena-Valenzuela,José Régulo; Nanclares-Gómez,Omar Alonso. |
| Abstract Banana is one of the most abundantly consumed fruits in the world for its contribution to human nutrition, including an important content of potassium. Given the social contribution of this crop in the cropping areas of Colombia, it is necessary to develop agronomic management strategies that contribute to increasing productivity and offering alternatives that regulate the effects of climate seasonality on banana production in the Uraba region of Colombia. For this purpose, different planting densities (2,000, 2,500, 3,000 and 3,500 plants ha-1) and planting arrangements (triangle, rectangle and double furrow), plus a relative control (1,700 plants ha-1 under triangle arrangement), were evaluated in the banana cv. Williams. The experimental design... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Banana; Light interception; Plant competition; Plant population; Bunch quality. |
| Ano: 2020 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122020000100046 |
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| Streck,Nereu A.; Uhlmann,Lilian O.; Gabriel,Luana F.. |
| The objective of this study was to simulate leaf development of cultivated rice genotypes and weedy red rice biotypes in climate change scenarios at Santa Maria, RS, Brazil. A leaf appearance (LAR) model adapted for rice was used to simulate the accumulated leaf number, represented by the Haun Stage, from crop emergence to flag leaf appearance (EM-FL). Three cultivated rice genotypes and two weedy red rice biotypes in six emergence dates were used. The LAR model was run for each emergence date using 100 years of synthetic daily weather data and six climate scenarios, including current, +1, +2, +3, +4 and +5 ºC increase in mean air temperature, with symmetric and asymmetric increase in daily minimum and maximum temperature. The increase in air temperature... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; Global warming; Plant competition; Climate change; Nitrogen management. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662013000200010 |
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