scholarly journals APLICAÇÃO DE FERTILIZANTE DE LIBERAÇÃO LENTA NO ESTABELECIMENTO DE MUDAS DE IPÊ-ROXO E ANGICO-BRANCO EM ÁREA DE DOMÍNIO CILIAR

FLORESTA ◽  
2011 ◽  
Vol 41 (2) ◽  
Author(s):  
Aletéia Lang ◽  
Ubirajara Contro Malavasi ◽  
Vanessa Decker ◽  
Paula Vergili Pérez ◽  
Maicon Antonio Aleixo ◽  
...  
Keyword(s):  
Slow Release ◽  
Native Forest ◽  
Initial Growth ◽  
Slow Release Fertilizer ◽  
Below Ground ◽  
Number Of Leaves ◽  
Collar Diameter ◽  
Non Destructive ◽  
Root Collar ◽  
Modern Tool

O uso de fertilizantes de liberação controlada constitui-se em uma das modernas técnicas na produção de mudas. Porém existem poucos relatos de seus efeitos sobre o crescimento inicial de espécies florestais nativas em área de domínio ciliar. O estudo objetivou comparar os efeitos de diferentes fertilizantes de liberação lenta (FLL) com uma formulação convencional no crescimento a campo de mudas de Anadenanthera colubrina e Tabebuia avellanedae. As mudas foram plantadas com 55 g por cova de Basacote 3M, Basacote 6M, Basacote 9M, formulação 16-8-12, e uma testemunha (sem fertilização). As mensurações não destrutivas incluíam os incrementos em altura, diâmetro do coleto e número de folhas aos 90, 180, 270 e 360 dias após o plantio, e avaliações destrutivas da massa seca aérea e radicular em mudas escavadas aos 180 e 360 dias após o plantio. Os resultados revelaram maior incremento para o diâmetro do coleto e o número de folhas em A. colubrina com FLL, enquanto que mudas de T. avellanedae expressaram maiores respostas em incrementos de altura. As biomassas secas da raiz e aérea não foram influenciadas pela adição de fertilizantes na cova, apresentando apenas diferenças entre as espécies.Palavras-chave:  Crescimento inicial; Anadenanthera colubrina; Tabebuia avellanedae; fertilizante de liberação lenta. AbstractEffects of fertilizers applied to ipe roxo and angico during their seedlings planting. Slow release fertilizer (SRF) is a modern tool for seedling production. However, there are few reports on the effects of its application on initial growth of native forest species planted on repairing areas. The aim of this experiment was to compare the effects of SRF and a conventional fertilizer on initial growth of fields planted with Anadenanthera colubrine and Tabebuia avellanedae seedlings. Treatments included 55 g per planting hole of Basacote 3M, Basacote 6M, Basacote 9M, conventional fertilizer NPK (16-8-12) and a control (no fertilizer). Non destructive measurements included increments of root collar, length, and number of leaves at 90, 180, 270 and 360 days after planting date. Destructive measurements included dried biomass of above and bellow ground tissues, root length, and leaf area of three seedling randomly selected from each treatment. The results showed higher increments in root collar diameter and number of leaves for A. colubrine with SRF while T. avellanedae seedlings showed higher increments in plant height. Differences in relation to above and below ground dry masses were detected only between species at 180 and 360 days after planting date.Keywords: Initial growth; Anadenanthera colubrina; Tabebuia avellanedae; slow release fertilizer.

scholarly journals Environment and slow-release fertilizer in the production of Euterpe precatoria seedlings

2018 ◽  
Vol 48 (4) ◽  
pp. 382-389
Author(s):  
Ueliton Oliveira de Almeida ◽  
Romeu de Carvalho Andrade Neto ◽  
Aureny Maria Pereira Lunz ◽  
Sônia Regina Nogueira ◽  
David Aquino da Costa ◽  
...  
Keyword(s):  
Slow Release ◽  
Block Design ◽  
Dry Mass ◽  
Palm Tree ◽  
Slow Release Fertilizer ◽  
Lack Of Information ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
Collar Diameter ◽  
Root Collar

ABSTRACT Euterpe precatoria Mart. has been demanded due to the functional characteristics of its fruits and, therefore, its planting has been encouraged. However, there is a lack of information about the seedling production system of this palm tree. Neither a favorable environment nor the amount of fertilizer in the substrate have been defined for the production of healthy and vigorous seedlings. This study aimed to evaluate the effect of environments and doses of a slow-release fertilizer on the production of E. precatoria seedlings. The experiment was conducted in a randomized block design, with three replications and ten plants per plot. The treatments were arranged in a 4 x 5 factorial scheme, with four environments (under shading levels of 20 %, 30 %, 50 % and 75 %) and five doses of a slow-release fertilizer (0.0 kg m-3, 2.5 kg m-3, 5.0 kg m-3, 7.5 kg m-3 and 10.0 kg m-3 of substrate). The seedling height; root collar diameter; number of leaves; leaf, shoot, root and total dry mass; and the Dickson quality index were analyzed. There were significant interactions between the shaded environments and slow-release fertilizer doses for all the analyzed variables. The 75 %-shaded environment yielded better quality seedlings. The slow-release fertilizer can be used to produce E. precatoria seedlings in environments under shading levels of 50 % and 75 %, being the 4.60 kg m-3 and 8 kg m-3 doses, respectively, the most recommended ones.

scholarly journals Growth and Quality of Inga heterophylla Willd Seedlings According to the Slow Release Fertilizer

2019 ◽  
Vol 11 (5) ◽  
pp. 479
Author(s):  
Elson J. S. da Silva ◽  
Jéssy A. V. Senado ◽  
Ádson E. da Silva ◽  
Marcos A. P. Gama ◽  
Selma T. Ohashi ◽  
...  
Keyword(s):  
Slow Release ◽  
Dry Mass ◽  
Experimental Unit ◽  
Native Forest ◽  
Mean Values ◽  
Slow Release Fertilizer ◽  
Performance Point ◽  
Slow Release Fertilizers ◽  
Collar Diameter

Slow release fertilizers have become an alternative for better efficiency in substrate fertilization for seedlings production, however, there are not many studies approaching the use of such fertilizers in the production of native forest species seedlings. This work aimed to evaluate the effect of different doses of a slow release fertilizer (SRF) on the development and quality of the Inga heterophylla seedlings. The experiment was conducted in a vivarium with 50% of shade for a 150-day period. Randomized blocks were the chosen experimental design, constituted of four treatments and four replications, with twenty plants per experimental unit. The treatments were four doses of Osmocote® FLL (0, 4.1, 8.2 and 12.3 g dm-3) in NPK 15-09-12 formulation, with evaluated variables being the height of the seedling (H), collar diameter (CD), number of leaf pairs (NLP), leaf area (LA), aerial part dry mass (APDM), root dry mass, total dry mass (TDM) and Dickson quality index (DQI). All the evaluated parameters responded significantly to the SRF doses and fit the positive quadratic polynomial model. For all of the analyzed variables, results show that the best averages were obtained by using the doses between 5.7 and 6.5 g dm-3, but due to the quadratic response they presented a decrease in the mean values after doses which were superior to the maximum performance point of each characteristic.

scholarly journals Sanitary landfill leachate as a source of nutrients on the initial growth of sunflower plants

2016 ◽  
Vol 20 (8) ◽  
pp. 746-750 ◽  
Author(s):  
Francisco H. Nunes Júnior ◽  
Franklin A. Gondim ◽  
Magnum de S. Pereira ◽  
Brennda B. Braga ◽  
Roberto A. Pontes Filho ◽  
...  
Keyword(s):  
Landfill Leachate ◽  
Polynomial Regression ◽  
Inhibitory Effect ◽  
Sanitary Landfill ◽  
Initial Growth ◽  
Experimental Conditions ◽  
Shoot Height ◽  
Number Of Leaves ◽  
Collar Diameter ◽  
Sanitary Landfill Leachate

ABSTRACT The aim of this study was to evaluate the initial growth of sunflower seedlings under different concentrations of sanitary landfill leachate, considering the feasibility of its use as source of nutrients for agricultural production. Biometric and vigor variables were analyzed through the measurements of collar diameter, shoot height, number of leaves and shoot and root fresh and dry matters, from January to February 2015. The experimental design was completely randomized in a 5 x 4 factorial scheme: five leachate concentrations (0, 40, 60, 80 and 100 kg N ha-1) x four harvest periods (14, 21, 25 and 29 days after sowing), with five replicates each containing two plants. The data were subjected to analysis of variance and polynomial regression, and the results of the last harvest (29 DAS) were compared by Tukey test (p ≤ 0.05). The use of sanitary landfill leachate increased all analyzed variables in sunflower plants when compared to the control plants (without leachate), especially in the treatment of 100 kg N ha-1. There was no inhibitory effect of the leachate on the initial growth of sunflower seedlings under adopted experimental conditions.

scholarly journals Growth performance and resistance to ground late frosts of Fagus sylvatica L. plantation treated with a brassinosteroid compound

2017 ◽  
Vol 63 (No. 3) ◽  
pp. 117-125
Author(s):  
Gallo Josef ◽  
Baláš Martin ◽  
Linda Rostislav ◽  
Kuneš Ivan
Keyword(s):  
Mortality Rate ◽  
Growth Performance ◽  
European Beech ◽  
Frost Damage ◽  
Control Treatment ◽  
Initial Growth ◽  
Height Range ◽  
Fagus Sylvatica L ◽  
Collar Diameter ◽  
Root Collar

We measured the initial growth performance of a young plantation of European beech treated with a brassinosteroid compound prior to planting and compared it with a control treatment: we assessed heights, root collar diameters and mortality rate during the period 2012–2015. The trees showed posterior damage by ground frost after a substantial late frost event on the night of 4–5 May 2014. Therefore, we evaluated the post-stress vitality of trees, subsequent height increment from spring to August, and the height range of the damage.<br />Mean height, root collar diameter, and mortality rate did not show any significantly better performance in the brassinosteroid treatment over the control treatment. Neither did the application treatment have a significant positive effect on the resistance of beech to late frosts. The severe frost damage was most intense at 30 cm above ground, and rapidly declined with increased height.

scholarly journals Trichoderma Contributes to the Germination and Seedling Development of Açaí Palm

Agriculture ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 456
Author(s):  
Bruno Fróes Campos ◽  
Anselmo Junior Corrêa Araújo ◽  
Cristina Aledi Felsemburgh ◽  
Thiago Almeida Vieira ◽  
Denise Castro Lustosa
Keyword(s):  
Dry Mass ◽  
Initial Growth ◽  
Randomized Design ◽  
Trichoderma Isolate ◽  
Number Of Leaves ◽  
Collar Diameter ◽  
Completely Randomized Design ◽  
Set Up ◽  
Root Size ◽  
Trichoderma Isolates

The application of Trichoderma fungus can be used to obtain seedlings of higher quality for plantations. The objective of this study was to evaluate the effects of Trichoderma isolates on the germination and initial growth of açaí seedlings. Two trials were set up. In the laboratory, the seeds were inoculated in suspensions prepared with each of the isolates for 24 h, and they were arranged in trays containing filter paper in a completely randomized design with five replicates containing 50 seeds each. For the control, the seeds were submerged only in water. Part of the seedlings resulting from seeds treated and not treated with Trichoderma were transferred to bags containing forest soil and were submitted to seven modes of application of Trichoderma and kept in a nursery. The speed of germination and hypocotyl were not influenced by the biological treatment. The application of the different Trichoderma isolates positively influenced the height, collar diameter, number of leaves, root size, leaf area and root, and aerial part dry mass of the açaí seedlings. The application of the Trichoderma isolate TAM01 on the preplanting substrate and biweekly applications on the postplanting substrate was the combination that most positively influenced the development of açai seedlings.

scholarly journals CHARACTERIZATION OF SEEDS, SEEDLINGS AND INITIAL GROWTH OF JACARANDA MIMOSIFOLIA D. DON. (BIGNONIACEAE)

2018 ◽  
Vol 42 (4) ◽  
Author(s):  
Jamille Rabêlo de Oliveira ◽  
Clark Alberto Souza da Costa ◽  
Antonio Marcos Esmeraldo Bezerra ◽  
Haynna Fernandes Abud ◽  
Eliseu Marlônio Pereira de Lucena
Keyword(s):  
Quality Index ◽  
Dry Weight ◽  
Initial Growth ◽  
Randomized Design ◽  
Germination Process ◽  
Length Width ◽  
Number Of Leaves ◽  
Collar Diameter ◽  
Jacaranda Mimosifolia

ABSTRACT This research aimed to characterize the biometry of seeds, the morphology of seedlings and to evaluate the initial growth of blue jacaranda trees (Jacaranda mimosifolia D. Don.) in two environments with distinct luminosity. The biometry of 100 de-winged seeds was measured by their length, width and thickness. One hundred seeds were sown into 300 cm3 tubes and seedlings morphology was registered throughout the germination process using digital photographs disposed sequentially according to seedlings age. The initial growth analysis was performed in two environments, full sun and greenhouse, during nine periods, and arranged in a complete randomized design with subplots. The response variables were: number of leaves, plant height, collar diameter, root length, aerial and roots dry weight, and Dickson’s Quality Index (DQI). Biometry results showed seeds 7.09 - 9.26 mm long, 6.74 -9.39 mm wide, and 1.11 -1.89 mm thick. Germination is of hypogealphanerocotylar type, with first root arising six days after sown. Plants at full sun presented larger collar diameters, greater root dry weight and higher DQI as evaluation periods passed by. In conclusion, the biometry of seeds and the morphology of seedlings of blue jacaranda can be used to recognize this species in the field. Plants at full sun presented better development. Seedlings cultivated at full sun can be destined to recuperate forests and degraded areas just 36 weeks after sowed.

scholarly journals Influence of the Nutritional Aspects on Initial Growth of African Mahogany (Khaya ivorensis A. Chev.)

2018 ◽  
Vol 10 (6) ◽  
pp. 184
Author(s):  
Camila Oliveira Muniz ◽  
Eliana Paula Fernandes Brasil ◽  
Lucas Morais Lobo ◽  
Evaldo De Melo Ferreira ◽  
João Augusto da Silva ◽  
...  
Keyword(s):  
Plant Height ◽  
Base Saturation ◽  
Initial Growth ◽  
Root Collar Diameter ◽  
African Mahogany ◽  
Statistical Variation ◽  
Increasing Trend ◽  
Collar Diameter ◽  
Block Effect ◽  
Root Collar

Khaya ivorensis A. Chev. (African mahogany) is one of the most economically important forest species, since it is used in the international furniture market. However, little is known about its culture and nutritional requirements. This study aimed to assess the development of K. ivorensis plants subjected to different base saturations, as well as to different N, P and K levels. An 8-ha area was used, wherein 4 ha had base saturation increased to 55% and the remaining 4 ha to 75%. The experimental design adopted was randomized blocks with eight repetitions in a factorial scheme (4 × 4 × 4), being four N doses, four P doses and four K doses. The base saturation was assessed through the block effect. The root collar diameter and the plant height were measured 12 months after planting. Each experimental plot comprised six plants. The root collar diameter showed statistical differences between blocks and N doses. Only the NPK association showed statistical variation in plant height. However, a growth decreasing trend resulting from increased N doses was observed, as well as a growth increasing trend resulting from increased P and K doses. All treatments favored African mahogany growth. The most indicated base saturation was 55%, since there was no plant growth improvement when V% was increased to 75%. The excess of N impaired the growth of the species. The best treatment comprised 60 g urea, 240 g triple superphosphate, and 168 g potassium chloride.

scholarly journals Controlled-Release Fertilizer in the Production of Seedlings of Anonna cacans Warm

2020 ◽  
Vol 8 (3) ◽  
pp. 125 ◽  
Author(s):  
Oscar José Smiderle ◽  
Aline Das Graças Souza ◽  
Renata Diane Menegatti
Keyword(s):  
Controlled Release ◽  
Nutritional Status ◽  
Initial Growth ◽  
Medium Sand ◽  
Promising Alternative ◽  
Controlled Release Fertilizer ◽  
Root Collar Diameter ◽  
Collar Diameter ◽  
Root Collar ◽  
Different Doses

The use of controlled-release fertilizers is a promising alternative for supplying nutrients during the initial growth of nursery seedlings. The aim of this study was to verify the effects of different doses of controlled-release fertilizer (CRF) on initial growth and nutritional status in seedlings of Anonna cacans Warm. The seeds were originally sown in a seedbed and then, after initial seedling development, were transplanted into polyethylene bags containing a substrate of washed medium sand, to which different doses of CRF had been added before transplanting. The experimental design was completely randomised, with four treatments, five doses of Osmocote® NPK 19-06-10 formulation (0, 1, 2, 4 and 8 g L-1 of substrate), with four replications, each replication comprising three seedlings (one in each container). Increases in root-collar diameter and plant height were determined throughout the experimental period (6 months) from data collected every 30 days after transplanting. At the end of the experiment the following were evaluated: height, root-collar diameter, N concentration, chlorophyll index, chlorophyll concentration (a, b and total) and leaf area. Root-collar diameter and height showed a positive linear response to increases in the fertilizer dose. From a 4 g L-1 dose of CRF, the nutrient supply added to the substrate of medium sand optimises the initial phase of plant growth and guarantees the adequate nutritional status of Anonna cacans, and can be suggested as a viable technique for use in forest nurseries, and one which results in efficient use of the input material and avoids fertilizer wastage.

scholarly journals DESEMPENHO DE MUDAS DE Pinus taeda PRODUZIDAS EM RAIZ NUA E EM DOIS TIPOS DE RECIPIENTES, 24 MESES APÓS O PLANTIO

FLORESTA ◽  
2001 ◽  
Vol 31 (12) ◽  
Author(s):  
Adalberto Brito De Novaes ◽  
José Geraldo De A. Carneiro ◽  
Deborah Guerra Barroso
Keyword(s):  
Pinus Taeda ◽  
Dry Weight ◽  
The Other ◽  
Initial Growth ◽  
Morphological Parameters ◽  
Stem Height ◽  
Root Collar Diameter ◽  
Collar Diameter ◽  
Bare Root ◽  
Root Collar

O presente estudo analisou a viabilidade do uso de uma nova metodologia de produção de mudas de Pinus taeda, cujo objetivo foi comparar a qualidade de mudas produzidas em blocos prensados, com mudas produzidas em tubetes e em raiz nua, com base nos parâmetros morfológicos. Empregou-se 5 tratamentos: a) Blocos prensados com 10 cm de altura; b) Blocos prensados com 7 cm de altura; c) Raiz nua; d) Tubetes (48 unidades/bandeja) e e) Tubetes (96 unidades/bandeja). Avaliou-se no viveiro os seguintes parâmetros: a) Altura da parte aérea (H); b) Diâmetro de colo (D); c) Relação H/D e d) Pesos de matéria fresca e seca das partes aérea, radicial e total. No campo foram avaliados a sobrevivência e o crescimento inicial. O desenvolvimento das mudas produzidas nos blocos prensados com 10 cm foi superior aos demais métodos utilizados neste trabalho. As médias mais baixas foram verificadas em mudas produzidas em tubetes. Performance Pinus taeda seedlings produced in bare root and two conteiner, after 24 months of the plantation Abstract The present study has anlysed the viability of the use of a new methodology fase in the prodution of Pinus taeda seedlings. The main objective was to compare the seedlings quality when produced in pressed blocks, tubes (60 cm3) and bare root. The five treatment were: a) Pressed blocks 10 cm height; b) Pressed blocks 7 cm height; c) Bare roots; d) Tubes (48 units/tray) and e) Tubes (96 units/tray). Were evaluated in the nursery the following parameters: a) Stem height (H); b) Root-collar diameter (D); c) H/D ratio and d) Weight fresh and dry weight matter (stem, root and total. In the field the survival and the initial growth. The performance of the seedlings produced in the 10 cm pressed blocks was higher than the other methods used in this experiment. The lowest averages were observed in seedlings produced in tubes for all morphological parameters evaluated.

scholarly journals Cauliflower qualities in two irrigation levels with the using of hydrophilic agent

2011 ◽  
Vol 38 (No. 2) ◽  
pp. 81-85 ◽  
Author(s):  
M. Koudela ◽  
F. Hnilička ◽  
L. Svozilová ◽  
J. Martinková
Keyword(s):  
Root Weight ◽  
Antioxidative Capacity ◽  
Marketable Yield ◽  
Irrigation Level ◽  
Number Of Leaves ◽  
Collar Diameter ◽  
Total Antioxidative Capacity ◽  
Irrigation Levels ◽  
Edible Parts ◽  
Root Collar

The aim of this work was to evaluate the influence of a hydrophilic agent (Agrisorb), added to a substrate for seedling cultivation (3 g Agrisorb/l of substrate), on the weight of roots, weight, and height of the aboveground part, the number of leaves and root collar diameter of precultivated cauliflower seedlings (cultivar Chambord F1). Seedlings were planted under two different irrigation levels: optimal with available water capacity 80%, and reduced with 50%. The influence of Agrisorb on the following characteristics of cauliflower edible parts was evaluated after harvest: weight, diameter, percentage representation of marketable parts, market yield, content of ascorbic acid, nitrates and dry matter, and total antioxidative capacity value. The addition of Agrisorb significantly increased the weight of the aboveground parts by 17.3%, the root weight by 28.1%, and the number of leaves by 7.9%. After harvest, it was noted that Agrisorb significantly increased marketable yield (by 17.5%) and decreased total antioxidative capacity (by 19.9%) in the treatment with a reduced irrigation level.

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