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Gasparin, Ezequiel; Araujo, Maristela Machado; Saldanha, Cleber Witt; Tolfo, Caira Viñas. |
Growing demand for native tree seedlings will require improvements in quality standards of production processes through the use of more efficient cultivation techniques. This study evaluated the effects of different doses of controlled release fertilizer (CRF) and different container volumes in the production of Parapiptadenia rigida seedlings. We examined the effects of five different concentrations (0, 3, 6, 9 and 12 g L-1 substrate) of CRF (18-5-9 NPK) and three different container volumes (50, 110 and 180 cm3) on seedling height (H) and collar diameter (CD) measured monthly for seven months and then calculated H/CD ratios. After 210 days of growth, the dry masses of the aerial portions, root systems, and total masses were determined, as well as the... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.00.00.00-4 native species; Fertilizer; Containers; Nursery. 5.01.03.04-0. |
Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19528 |
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Saldanha, Cleber Witt; Missio, Evandro Luiz; Steffen, Gerusa Pauli Kist; Maldaner, Joseila; Morais, Rosana Matos de. |
This study aimed to assess the physiological quality of Parapiptadenia rigida (Benth.) Brenan seed weight classes subjected to accelerated aging under laboratory and greenhouse conditions. A lot of P. rigida seeds was split in three seed weight classes (thousand seed weight): TSW1 (original lot; control, 19.23 g), TSW2 (25.45 g) and TSW3 (13.58 g), which were subjected to three accelerated aging times (0, 24 and 48 h). First count, weak and strong normal seedlings, percentage of accumulated germination, percentage of death seed, electrical conductivity, fresh and dry weight and shoot length were assessed in laboratory. Seedling emergence, emergence velocity and emergence velocity index were assessed in greenhouse. P. rigida seeds showing higher weight... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Recursos Floestais; Sementes Florestais Accelerated aging; Germination; Seed size Envelhecimento acelerado; Germinação; Tamanho de semente. |
Ano: 2018 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1501 |
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