20 documents found, page 1 of 2
Correlation of biometric characteristics of fruits and seeds with the vigor of ...
Araújo Montenegro, Raiovane; Smiderle, Oscar José; das Graças Souza, AlineThe goal of this study was to determine and correlate the main morphometric characteristics of fruits, seeds, and seedling vigor of Agonandra brasiliensis, in Roraima. The design was completely randomized with three treatments, consisting of six replications with 20 seeds. The treatments established were three classes of seeds: T1 - small seeds (S = 1.50-1.69 g); T2 - medium seeds (M = 1.70-1.89 g) and T3 - lar...
Seedling quality of Agonandra brasiliensis in response to different Osmocote® d...
Mota, Eduardo Rodrigues; Smiderle, Oscar José; Dionisio, Luiz Fernandes Silva; Souza, Aline das Graças; Montenegro, Raiovane Araújo; Schwartz, GustavoThe objective of this work was to evaluate seedlings quality of the tree species Agonandra brasiliensis under different doses of the controlled release fertilizer (CRF) Osmocote® and recipient volumes. The experiment was set up in a factorial design for two recipient volumes (1.8 L and 2.2 L) and five CRF doses (0.0; 0.5; 1.0; 2.0; and 3.0 g L-1 of substrate). Four repetitions of one plant each were used. After...
The Effect of packaging and storage conditions on the physiological quality of ...
Smiderle, Oscar José; Nascimento, Cassia Rejane do; Chagas, Edvan Alves; Chagas, Pollyana Cardoso; Souza, Aline das GraçasThe study aimed to verify the physiological quality of seeds of Myrciaria dubia, stored for 300 days in different conditions and packaging, using tests of electrical conductivity and seedling vigour. The seeds were classified into three weight classes (small, medium and large). Small seeds were considered those with a weight of less than 0.84 g, medium seeds with a weight between 0.86 g and 1.20 g, and large se...
Macronutrient uptake, transport and use efficiency in seedlings of Pochota fend...
Souza, Aline das Graças; Smiderle, Oscar José; Menegatti, Renata Diane; Dias, Thiago JardelinoSeedlings produced in containers can be influenced by the materials used in the substrate, which affects the robustness of the plants and, indirectly, the time required for transplanting and for the plants to become established in the field. The aim of this study was to determine the chemical properties of different materials and on the absorption of macronutrients in Pochota fendleri seedlings (cedro-doce). Th...
Relation of milling process and physiological quality of rice seeds during storage
Lima, Juliana Maria Espíndola; Smiderle, Oscar José; Galvão, Lindemberg de Matos; Sá, Allex Ricarte de; Cordeiro, Antônio Carlos CentenoRice (Oryza sativa L.) is one of the most widely grown crops in the world and one of the earliest domesticated crop species. Also, its consumption is around 20% of the world’s caloric intake. It was aimed in this study to evaluate the relation between milled rice yield and physiological quality of rice seeds during storage. Two experiments were carried out with seeds of long-fine common rice and special rice cu...
Morphometry and initial growth of Copaifera pubiflora exposed to vegetable land...
Marques, Carolina Soares; Guimarães, Pedro Vitor Pereira; Smiderle, Oscar José; Sousa, Rita de Cássia PompeuThis research aimed to assess the emergence and initial growth of Copaifera pubiflora Benth. (copaibeira) exposed to vegetable land produced in school composting. The seeds of C. pubiflora were collected in the area of the riparian forest of Boa Vista, Roraima and classified as size (small or large) and performed the biometric characterization (length, diameter and mass of the seed). The experiment consisted of...
Characterization of fruits and seeds of Astrocaryum aculeatum G. Mey. in the no...
Dionisio, Luiz Fernandes Silva; Smiderle, Oscar José; Gomes, Jefferson Peixoto; Santos, Raylanne de Lima; Leão, Fabio MirandaTucumã (Astrocaryum aculeatum G. Meyer) is an oil palm tree with great economic potential. The oil of its pulp and seed of its fruits are used for the production of biofuels in Brazil, and the fruit characterization in natural populations is required to obtain important information for the genetic improvement of this species. The objective was to evaluate physical characteristics of A. aculeatum fruits and seed...
Emergência e crescimento inicial de plântulas de Swietenia macrophylla (King) e...
Dionisio, Luiz Fernades Silva; Smiderle, Oscar José; Montenegro, Raiovane Araújo; Rocha Martins, Walmer Bruno; Oliveira Simões, Pedro HenriqueMahogany (Swietenia macrophylla King) is a high economic potential Meliaceae found in an upland forest of the Brazilian Amazon, one of the most exploited species in Brazil and because of that is endangered. The study aimed to evaluate the effect of sowing position and presence of endocarp in the emergence and initial growth of S. macrophylla seedlings. The design was completely randomized with four replications...
Growth and nutritional status and quality of Khaya senegalensis seedlings
Smiderle, Oscar José; Souza, Aline das Graças; Chagas, Edvan Alves; Alves, Marcia de Souza; Fagundes, Paulo Renato de OliveiraDue to the shortage of information on both mineral fertilizer and organic substrate in Khaya senegalensis, it was proposed in the current study to verify the potential of the use or not of addition of nutrient solution in the production of high quality seedlings of K. senegalensis as well as to obtain the total accumulation of macro and micronutrients in the seedlings. The experimental design was completely ran...
Osmopriming duration in Araçá-boi seeds germination
da Silva, Marcela Liege; Chagas, Edvan Alves; Moura, Elias Ariel de; Chagas, Pollyana Cardoso; Smiderle, Oscar José; Vilaça, Rosemary VilaçaThe Araca-boi is a native fruit of the Amazon region and its fruits have great potential for agro-industrial use due to the intrinsic characteristics of the pulp. The seeds are dormant and the primary cause could be due to the presence of inhibiting chemicals germination and can also be caused by the impermeability in tegument. The objective of this study was to assess the osmopriming efficiency promoted by Suc...