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| Pias, Osmar Henrique de Castro; Cantarelli, Edison Bisognin; Berghetti, Juliano; Leschewitz, Rogério; Kluge, Elizandro Ricardo; Somavilla, Lucindo. |
| O objetivo do presente trabalho foi definir a melhor dose de Osmocote® para a produção de mudas de Apuleia leiocarpa para 60 e 90 dias de permanência no viveiro após o transplantio e acompanhar a resposta do índice de clorofila das mudas durante o período em estudo. O delineamento experimental utilizado foi o inteiramente casualizado, sendo constituído de cinco tratamentos, e dez repetições. Os tratamentos consistiram em doses crescentes de Osmocote® ( 0, 3, 6, 9 e 12 kg m-3 de substrato).Avaliou-se o índice de clorofila, diâmetro do colo e altura das mudas aos 60 e 90 dias após transplante (DAT), área foliar, massa seca da parte aérea, comprimento e massa seca das raízes aos 90 DAT. A partir dos valores médios dos pontos de máximaeficiência técnica, de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências agrária/ Engenharia florestal Caesalpinoideae; Apuleia leiocarpa; Nutrição Caesalpinoideae; Apuleia leiocarpa; Nutrition. |
| Ano: 2013 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/419 |
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| Pias, Osmar Henrique de Castro; Cherubin, Maurício Roberto; Basso, Claudir José; Santi, Antônio Luis; Molin, José Paulo; Bayer, Cimélio. |
| There is no consensus in the literature regarding how many subsamples are needed to perform accurate on-farm soil penetration resistance (SPR) mapping. Therefore, the objective of this study was to define the number of subsamples per sampling point needed to quantify the SPR. The experiment was performed in a 4.7 ha area and employed a 50 × 50 m grid system (18 sampling points). The SPR was evaluated using a digital penetrometer in two different years with 1, 2, 3, 4, 5, 6, 9, 12, and 15 subsamples per sampling point. The SPR maps produced with increasing numbers of subsamples were compared to the reference maps (15 subsamples) using the relative deviation coefficient and Pearson´s linear correlation. A reduction in the number of subsamples promoted an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil compaction; Sampling protocol; Precision agriculture; Microvariability. soil compaction; Sampling protocol; Precision agriculture; Microvariability Física do solo. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/34989 |
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| Pias, Osmar Henrique de Castro; Cherubin, Maurício Roberto; Basso, Claudir José; Santi, Antônio Luis; Molin, José Paulo; Bayer, Cimélio. |
| There is no consensus in the literature regarding how many subsamples are needed to perform accurate on-farm soil penetration resistance (SPR) mapping. Therefore, the objective of this study was to define the number of subsamples per sampling point needed to quantify the SPR. The experiment was performed in a 4.7 ha area and employed a 50 × 50 m grid system (18 sampling points). The SPR was evaluated using a digital penetrometer in two different years with 1, 2, 3, 4, 5, 6, 9, 12, and 15 subsamples per sampling point. The SPR maps produced with increasing numbers of subsamples were compared to the reference maps (15 subsamples) using the relative deviation coefficient and Pearson´s linear correlation. A reduction in the number of subsamples promoted an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil compaction; Sampling protocol; Precision agriculture; Microvariability.; Soil compaction; Sampling protocol; Precision agriculture; Microvariability; Física do solo. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/34989 |
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