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| Cargnelutti Filho,Alberto; Lavezo,André; Bem,Cláudia Marques de; Carini,Fernanda; Schabarum,Denison Esequiel; Bandeira,Cirineu Tolfo; Kleinpaul,Jéssica Andiara; Wartha,Cleiton Antonio; Silveira,Daniela Lixinski; Pezzini,Rafael Vieira; Thomasi,Rosana Marzari; Simões,Fernanda Martins; Neu,Ismael Mario Márcio. |
| ABSTRACT The aim of this study was to determine the optimum plot size to evaluate the fresh matter of aerial part of dwarf pigeon pea (Cajanus cajan (L.) Millsp), cultivar IAPAR 43 (Aratã), in scenarios formed by combinations of numbers of treatments, number of replications, and precision levels. The fresh matter of aerial part was weighed on basic experimental units of 1 m × 1 m in three uniformity trials with size of 24 m × 12 m (288 m2 in each trial). The soil heterogeneity index of Smith was estimated. Also, the optimum plot size was determined by Hatheway’s method in scenarios formed by combinations of i treatments (i = 5, 10, 15, and 20), r replications (r = 3, 4, 5, 6, 7 8, 9, and 10), and d precision levels (d = 5%, 10%, 15%, 20%, 25%, and 30%). In... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cajanus cajan L.; Fresh matter of aerial part; Uniformity trial; Experimental design; Cover crops. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200212 |
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| Lavezo,André; Cargnelutti Filho,Alberto; Bem,Cláudia Marques de; Burin,Cláudia; Kleinpaul,Jéssica Andiara; Pezzini,Rafael Vieira. |
| ABSTRACT The objectives of this study were to determine the optimum plot size (Xo) and the number of replications to evaluate grain yield and verify the variability of Xo among oat cultivars. Thirtytwo uniformity trials of 3 × 3 m were performed, being 8 from each cultivar (URS Charrua, URS Taura, URS Estampa, and URS Corona). Each uniformity trial was divided in 36 basic experimental units (BEU) of 0.5 × 0.5 m. Grain yield was determined in each BEU. The Xo was determined by the method of maximum curvature of the coefficient of variation model. Mean comparisons among cultivars were performed by the Scott-Knott test via bootstrap. The number of replications was calculated by an iterative process until convergence for experiments in completely randomized... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avena sativa L.; Variability; Uniformity trial; Experimental design. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400512 |
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| Chaves,Gabriela Görgen; Cargnelutti Filho,Alberto; Alves,Bruna Mendonça; Lavezo,André; Wartha,Cleiton Antonio; Uliana,Daniela Barbieri; Pezzini,Rafael Vieira; Kleinpaul,Jéssica Andiara; Neu,Ismael Mario Márcio. |
| Abstract Phyllochron and leaf appearance rate are both important parameters in the production efficiency of agricultural crops. The objectives of this study were to determine the phyllochron and leaf appearance rate in 4 oat cultivars (Avena sativa L.) in 3 sowing dates and verify the variability of phyllochron and leaf appearance rate among cultivars and sowing dates. The experimental design was the completely randomized with 12 treatments and 20 repetitions. Treatments were formed by the combination of 4 cultivars (URS Charrua, URS Taura, URS Estampa, and URS Corona) and 3 sowing dates in 2014 (April 28, May 28, and July 14). In each plant (repetition) of each treatment, the number of expanded leaves (NEL) was counted 3 times per week from the first leaf... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avena sativa L.; Plant development; Thermal time; Leaf emission. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100073 |
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| Facco,Giovani; Cargnelutti Filho,Alberto; Lavezo,André; Schabarum,Denison Esequiel; Chaves,Gabriela Görgen; Silveira,Daniela Lixinski. |
| ABSTRACT: This study aimed to verify the influence of the basic experimental unit (BEU) size in the estimation of the optimum plot size to evaluate the fresh matter of sunn hemp (Crotalaria juncea L.) using the modified maximum curvature method. The fresh matter of sunn hemp was evaluated in uniformity trials in two sowing season in flowering. In each sowing season, 4,608 BEUs of 0.5×0.5m (0.25m2) were evaluated and 36 BEU plans were formed with sizes from 0.25 to 16m2. In each evaluation period for each BEU plan, using fresh matter data, optimum plot size was estimated through the modified maximum curvature method. Estimation of the optimum plot size depends on the BEU size. Assessing fresh matter in BEUs that are as small as possible is recommended in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crotalaria juncea L.; Modified maximum curvature; Uniformity trials; Experimental planing.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000500203 |
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