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| Fioreze, Samuel Luiz; Faculdade de Ciências Agronômicas de Botucatu, Universidade Estadual Paulista “Júlio de Mesquita Filho”; Castoldi, Gustavo; Faculdade de Ciências Agronômicas de Botucatu, Universidade Estadual Paulista “Júlio de Mesquita Filho”; Pivetta, Laércio Augusto; Faculdade de Ciências Agronômicas de Botucatu, Universidade Estadual Paulista “Júlio de Mesquita Filho”; Pivetta, Laerte Gustavo; Faculdade de Ciências Agronômicas de Botucatu, Universidade Estadual Paulista “Júlio de Mesquita Filho”; Fernandes, Dirceu Maximino; Faculdade de Ciências Agronômicas de Botucatu, Universidade Estadual Paulista “Júlio de Mesquita Filho”; Büll, Leonardo Theodoro; Faculdade de Ciências Agronômicas de Botucatu, Universidade Estadual Paulista “Júlio de Mesquita Filho”. |
| Tillering plays an important role in wheat yield potential and it is affected by genotype and environmental conditions. This work aimed to study the effects of phosphorus levels on tiller emergence, survival and contribution to yield potential of two wheat cultivars. The experiment was carried out under greenhouse conditions in Botucatu, São Paulo State, Brazil. A 2 x 5 factorial randomized block design with four replications was applied. Two wheat cultivars (IAC 370 and IAC 375) and five phosphorus levels (0, 150, 300, 450 and 600 mg dm-3) were evaluated in pots with 10 dm3 of a clayey Oxisol. Higher P levels increased tiller emergence, survival and yield, especially for secondary tillers. Tiller abortion levels were higher in IAC 370 cultivar whereas... |
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Palavras-chave: 5.01.03.00-8 Triticum aestivum; Yield potential; Dry matter accumulation; Tiller survival. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/13326 |
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| Stivanin, Sheila Cristina Bosco; Universidade Federal de Santa Maria; Rocha, Marta Gomes da; Universidade Federal de Santa Maria; Pötter, Luciana; Universidade Federal de Santa Maria; Hampel, Viviane da Silva; Universidade Federal de Santa Maria; Alves, Marcos Bernardino; Universidade Federal de Santa Maria; Salvador, Paulo Roberto; Universidade Federal de Santa Maria. |
| This study investigated the tiller dynamics of Italian ryegrass (Lolium multiflorum Lam) under low and high stocking rates. These rates were determined by heifers exclusively on pasture or grazing and supplemented with oats and corn grain. The experimental design was completely randomized with repeated measurements over time, with two stocking rates, three and six replications of area for low and high stocking rates, respectively. The appearance rate (1.0 tillers tiller-1 m-2), survival rate (0.8 tillers tiller-1 m-2), population stability index (1.6) and site occupation (0.3) were similar for high and low stocking rates. The tiller density was similar for different stocking rates. The first generation of tillers was 56% of the tiller population at end of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Population stability index; Site occupation; Tiller survival; Tiller appearance rate. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/22912 |
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