scholarly journals DEVELOPMENT OF Tabebuia aurea AND Anadenanthera macrocarpa UNDER DIFFERENT LEVELS OF SHADING

2020 ◽  
Vol 28 ◽  
pp. 357-363
Author(s):  
Gleydson Vinicius Silveira ◽  
Alan Cauê Holanda ◽  
Allyson Rocha Alves ◽  
Françóyse Dávilla Silva ◽  
João Lucas Oliveira
Keyword(s):  
Quality Index ◽  
Diameter Ratio ◽  
Initial Growth ◽  
Coconut Fiber ◽  
Mean Values ◽  
Different Levels ◽  
Dickson Quality Index

The efficiency in the initial growth of trees can be related to the ability of the seedlings in adapting to different light intensites in the enviroment. The objective of this work was to evaluate the influence of different levels of shading in the initial growth of Tabebuia aurea and Angico (Anadenanthera macrocarpa) in the nursery phase. The experiment was conducted at the Federal Rural University of Semiárido located in Mossoró-RN. The seeds of A. macrocarpa and T. aurea were collected from parent trees and donated by the Caatinga/ UFERSA / Petrobras Project, where, afterwards, they were processed. The composting used in the experiment was coconut fiber, after the substrate was placed in 55-cm³ tubes and organized in plastic supports. The seedlings were submitted to three levels of shade, full sun (absence of shade), shade of 50% and 80%. For the different levels of shading, mean values of the height/diameter ratio of the neck were obtained of 3.74 (A. macrocarpa) and 1.57 (T. aurea) for cultivation in full sun, 0% of shading, indicating that the growth of this cropt may have better results under these conditions. The highest values of the Dickson Quality Index (DQI) were observed in seedlings grown under a lower shade level of 0.03454 and 0.11719. The species T. aurea shows little tolerance when subjected to high levels of shading, showing that the luminosity interfere in the initial growth of the species. A. macrocarpa, also acquired a better development in full sun, showing less progress at higher levels of shading.

scholarly journals DESENVOLVIMENTO INICIAL DE MUDAS DE BARUZEIRO (Dipteryx alata Vog) EM FUNÇÃO DE SUSBTRATOS E LÂMINAS DE IRRIGAÇÃO

Irriga ◽  
2017 ◽  
Vol 22 (2) ◽  
pp. 288-300 ◽  
Author(s):  
Henrique Fonseca Elias de Oliveira ◽  
Cléber Luiz De Souza ◽  
Danilo Vieira Félix ◽  
Leandro Da Silva Fernandes ◽  
Polliany Santos Xavier ◽  
...  
Keyword(s):  
Quality Index ◽  
Dry Matter ◽  
Block Design ◽  
Initial Growth ◽  
Aerial Portion ◽  
Randomized Block Design ◽  
System Length ◽  
E Mail ◽  
Dickson Quality Index ◽  
Dipteryx Alata

DESENVOLVIMENTO INICIAL DE MUDAS DE BARUZEIRO (Dipteryx alata Vog) EM FUNÇÃO DE SUSBTRATOS E LÂMINAS DE IRRIGAÇÃO  HENRIQUE FONSECA ELIAS DE OLIVEIRA1; CLÉBER LUIZ DE SOUZA2; DANILO VIEIRA FÉLIX2; LEANDRO DA SILVA FERNANDES2; POLLIANY SANTOS XAVIER2 E LUCAS MAGALHÃES ALVES2 1Eng. Agrícola, Doutor, Instituto Federal Goiano, GO 154, km 03, CEP 76300-000, Ceres – GO, e-mail: [email protected]ônomo (a), Instituto Federal Goiano, GO 154, km 03, CEP 76300-000, Ceres – GO, e-mail: [email protected], [email protected], [email protected], [email protected], [email protected]  1 RESUMO O presente estudo objetivou avaliar o crescimento inicial de plantas de baruzeiro, sob substratos e lâminas de irrigação e identificar o manejo que resulte em condições ideais para a produção de mudas desta espécie. Foi implantado um experimento no delineamento em blocos ao acaso, com quatro repetições, em parcelas subdivididas no esquema 5 x 4, sendo as parcelas compostas por lâminas de irrigação diárias (6, 8, 10, 12 e 14 mm) e as subparcelas substratos: S1 - 100% Latossolo vermelho; S2 - 50% Latossolo vermelho e 50% Areia; S3 - 45% Latossolo vermelho, 45% Areia e 10% Esterco Bovino Curtido e S4 - Substrato comercial Basaplant®. As características avaliadas foram altura de planta, diâmetro de caule, número de folíolos, comprimento de raiz, massa seca de raiz, massa seca de parte aérea, massa seca de muda, relação das massas secas de raiz e parte aérea e índice de qualidade de Dickson. Aos 200 dias após a semeadura (DAS) o substrato S1 proporcionou maior crescimento e qualidade às plantas de baruzeiro, dado pelo Índice de Qualidade de Dickson (IQD) obtido de 1,05, assim como a lâmina de 14 mm dia-1, a qual obteve IQD igual 0,98, diferindo estatisticamente das demais lâminas avaliadas. Palavras-chave: gotejamento, características produtivas, Índice de Qualidade de Dickson.  OLIVEIRA, H. F. E.; SOUZA, C. L.; FÉLIX, D. V.; FERNANDES L. S.; XAVIER, P. S.; ALVES, L. M.INITIAL DEVELOPMENT OF BARUZEIRO (Dipteryx alata Vog) SEEDLING AS FUNCTION OF SUBSTRATES AND IRRIGATIONS LEVELS  2 ABSTRACT This study aimed to evaluate the initial growth of baruzeiro plants, under substrates and irrigation levels and identify the management that results in ideal conditions for the production of seedlings of this species. The experiment was installed in a randomized block design, with four replications, in split-plot, in the scheme 4 x 5, with plots composed of five daily irrigations levels and four subplots substrates: S1 - 100% OXISOL RED; S2 - 50% OXISOL RED and 50% sand; S3 - 45% OXISOL RED, 45% sand, and 10% of tanned manure and S4 - Commercial Substrate Basaplant. The five daily watering (6, 8, 10, 12 and 14 mm) make up the subplot. The characteristics assessed were plant height, stem diameter, number of leaflets, root system length, dry matter mass of roots, dry matter mass of aerial portion, dry matter  mass of seedling, ratio between roots dry matter mass and aerial portion and seedling quality. At 200 DAS substrate S1 provided greater growth and quality to baruzeiro plants, given by the Dickson Quality Index (DQI) obtained of 1.05, as well as the irrigation depth of 14 mm day-1, once it obtained DQI equal to 0.98, statistically differing from the other irrigation depths assessed. Keywords: drip irrigation, productive characteristics, Dickson Quality Index.

scholarly journals Initial growth of Moringa oleifera Lam. as a function of poultry litter doses and granulometry

2018 ◽  
Vol 48 (4) ◽  
pp. 399-406
Author(s):  
Francisco Marto de Souza ◽  
Walter Esfrain Pereira ◽  
Jussara Silva Dantas ◽  
Jackson Silva Nóbrega ◽  
Ellen Caroline Santos Lima ◽  
...  
Keyword(s):  
Particle Size ◽  
Plant Height ◽  
Quality Index ◽  
Dry Matter ◽  
Moringa Oleifera ◽  
Poultry Litter ◽  
Root Diameter ◽  
Initial Growth ◽  
Dickson Quality Index ◽  
Moringa Oleifera Lam

ABSTRACT There is an increasing use of poultry litter in seedling production. However, studies regarding the effect of different particle-size litter on plant growth are still scarce. This study aimed to evaluate the growth of Moringa oleifera Lam. fertilized with poultry litter doses (0 g dm-3, 40 g dm-3, 80 g dm-3 and 120 g dm-3) with distinct particle sizes (1 mm and 4 mm), with four replications. The following variables were evaluated: plant height; root and stem diameter; leaf, stem, shoot and root dry matter mass; shoot/root dry matter mass ratio; and the Dickson quality index. There was no influence of the particle size on the studied variables, except for plant height. The root diameter decreased with the increase of the poultry litter doses. The accumulation of dry matter mass from the shoot and root increased with the increase of poultry litter doses up to 120 g dm-3. A linear increase of the Dickson quality index, relatively to days and poultry litter doses, was observed. It is recommended to apply 80 g dm-3 of poultry litter to fertilize M. oleifera plants, independently of the granulometry used.

scholarly journals NITROGEN FERTILIZATION FOR THE NURSERY PRODUCTION OF AUSTRALIAN RED CEDAR

FLORESTA ◽  
2019 ◽  
Vol 49 (3) ◽  
pp. 431
Author(s):  
Júlio Rieger Lucchese ◽  
Marília Lazarotto ◽  
Marcio Alberto Hilgert ◽  
Claudimar Sidnei Fior ◽  
Larissa Campos de Sá ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Quality Index ◽  
Cultural Practices ◽  
Diameter Ratio ◽  
Quadratic Regression ◽  
Red Cedar ◽  
Nursery Production ◽  
Nitrogen Concentrations ◽  
Toona Ciliata ◽  
Dickson Quality Index

Fertilization is one of the most important cultural practices in the production of seedlings, significantly influencing the quality and establishment of new stands. As the production of Toona ciliata var. australis lacks information on their nutritional requirements, especially nitrogen, this work evaluated the effect of different nitrogen concentrations and application intervals on the production of seedlings of this species, determining the most appropriate concentration. The seedlings were fertilized with 0, 250, 500, 1000, 2000 and 4000 mg L-1 of nitrogen (N), at intervals of 7 and 14 days till the end of the experiment. Increases in height, diameter, dry shoot and root mass, and Dickson quality index were observed as the concentration increased and decreased in higher concentrations, showing a negative quadratic regression in all variables, except the height/diameter ratio, which showed a higher value as N concentration increases. A higher growth showed by the Dickson quality index was achieved using the concentration of 2060 mg L-1. The absence of nitrogen and the concentration of 4000 mg L-1 limits the development of the seedlings, regardless of the interval. It is therefore recommended to use 2060 mg L-1 every 7 days for the production of Toona ciliata var. australis.

scholarly journals Optimization of germination and initial quality of seedlings of Prunus persica tree rootstocks

2017 ◽  
Vol 39 (2) ◽  
pp. 166-173 ◽  
Author(s):  
Aline das Graças Souza ◽  
Victor Mouzinho Spinelli ◽  
Rauny Oliveira de Souza ◽  
Oscar José Smiderle ◽  
Valmor João Bianchi
Keyword(s):  
Quality Index ◽  
Prunus Persica ◽  
Seed Mass ◽  
Limiting Factor ◽  
Initial Growth ◽  
Peach Tree ◽  
High Quality ◽  
The Third ◽  
Dickson Quality Index

Abstract: The present study evaluated the germination potential of seeds from eight peach tree rootstocks under different stratification methods, aiming at the production of high quality seedlings. In the first experiment, seeds with endocarp from eight genotypes (‘Aldrighi’, ‘Capdeboscq’, ‘Flordaguard’, ‘Okinawa’, ‘Okinawa roxo’, ‘Tsukuba 1’, ‘Tsukuba 2’, ‘Tsukuba 3’) were stratified on sand and moist vermiculite, at 7 ºC for 60 days. In the second experiment, endocarpless seeds of the same genotypes were stratified on Petri dishes at 7 ºC. In the third experiment, the time at which at least 75% of the seedlings reached transplanting height (15 cm high) was verified. The endocarp was a limiting factor for seed germination of the eight rootstocks, since the highest germination percentages were 21% and 48.3% for ‘Aldrighi’ and ‘Capdeboscq’, respectively. Germination of ‘Okinawa’ was only 19.2% and 4.2%, in sand and vermiculite, respectively. Seeds stratified without the endocarp, showed 100% germination, except for ‘Flordaguard’ and ‘Tsukuba 2’ and 3’, with 93% germination. Seed mass presented a positive correlation with the germination speed index and the initial growth of the seedlings. ‘Aldrighi’ and ‘Capdeboscq’ presented more vigorous seedlings with greater growth in height, stem diameter, and Dickson quality index.

scholarly journals Substrate and quality mangosteen seedlings

2019 ◽  
Vol 41 (3) ◽  
Author(s):  
Gedeon Almeida Gomes Júnior ◽  
Rafaela Alves Pereira ◽  
Danillo José dos Santos ◽  
George Andrade Sodré ◽  
Eduardo Gross
Keyword(s):  
Growth Rate ◽  
Quality Index ◽  
Principal Component ◽  
Dry Mass ◽  
Seedling Production ◽  
Coconut Fiber ◽  
Garcinia Mangostana ◽  
Leaf Dry Mass ◽  
Response Groups ◽  
Dickson Quality Index

Abstract An obstacle to the production of mangosteen seedlings (Garcinia mangostana L.) is the long nursery time of approximately two years. Among other factors, the identification of a suitable substrate for seedling production from this species is a preponderant factor to reduce nursery time. This study aimed to evaluate the growth of seminal mangosteen seedlings grown in four different substrate compositions. Growth rate was determined using the following variables: stem diameter, plant height, stem dry mass, leaf dry mass, shoot dry mass, root dry mass, total dry mass and Dickson Quality Index (DQI). The substrate S1 (sphagnum turf and vermiculite) was superior to substrates S2 (pinus bark and vermiculite), S3 (pinus bark and coconut fiber) and S4 (soil) in all evaluated parameters. The principal component analysis separated the treatments into three response groups, in which S1 exerted the greatest influence on the growth variables, concluding that this one of the substrates tested was the most adequate for the formation of mangosteen seedlings.

scholarly journals Growth of young Tabebuia aurea seedlings under irrigation with wastewater from fish farming

2016 ◽  
Vol 20 (6) ◽  
pp. 519-524 ◽  
Author(s):  
José R. de S. Pinto ◽  
Rômulo M. O. de Freitas ◽  
Tiago de S. Leite ◽  
Francisco de A. de Oliveira ◽  
Hugo Ferreira ◽  
...  
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Quality Index ◽  
Dry Matter ◽  
Fish Farming ◽  
Diameter Ratio ◽  
Stem Diameter ◽  
Individual Leaf ◽  
Experiment Individual ◽  
Dickson Quality Index

ABSTRACT This study aimed to evaluate the growth of young Tabebuia aurea seedlings irrigated with different concentrations of wastewater from fish farming. The experiment was conducted in a seedling nursery, from June to August 2013. The treatments consisted of five concentrations of wastewater from fish farming diluted in freshwater (0, 25, 50, 75 and 100% of wastewater). Plant height, stem diameter and plant height/stem diameter ratio were evaluated every 15 days to verify the effects of treatments on seedlings growth. At the end of the experiment, individual leaf area, leaf area, leaf dry matter, stem dry matter, root dry matter, total dry matter and Dickson quality index were also evaluated. The reuse of wastewater from fish farming diluted at concentrations of 25 and 50% in freshwater is a viable alternative in the production of Tabebuia aurea seedlings. However, higher concentrations hinder the production of seedlings of this species.

scholarly journals SEWAGE SLUDGE COMPOST ASSOCIATED TO FREQUENCY OF IRRIGATION FOR Peltophorum dubium (Sprengel) Taubert SEEDLINGS PRODUCTION

FLORESTA ◽  
2020 ◽  
Vol 50 (2) ◽  
pp. 1389
Author(s):  
Laura Oliveira Cleto da Silva ◽  
Aline Cássia Da Fonseca ◽  
Deicy Carolina Lozano Sivisaca ◽  
Magali Ribeiro da Silva ◽  
Roberto Lyra Villas Boas ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Quality Index ◽  
Color Index ◽  
Environmental Problem ◽  
Dry Mass ◽  
Diameter Ratio ◽  
Promising Alternative ◽  
Leaf Dry Mass ◽  
Eucalyptus Bark ◽  
Dickson Quality Index

Inappropriate disposal of sewage sludge has become an environmental problem. In some Brazilian states, such as São Paulo, in natura sewage sludge use is practically prohibited due to restrictive requirements by CONAMA Resolution No. 375/2006. Therefore, a very promising alternative to reuse this residue is to compost it with other materials and use it as a substrate in the production of seedlings. The objective of this study was to evaluate the development of the seedlings of Peltophorum dubium in compost with sewage sludge, to determine which frequency of irrigation would be more adequate according to the physical characteristics of each substrate, and if this would influence the morphological and nutritional variables of the seedlings. Two composts were produced: sewage sludge composted with sugarcane bagasse and sewage sludge composted with eucalyptus bark, both in 1: 1 proportion. Commercial substrate was used for control. This study was completely randomized in a 3x3 factorial design, which three substrates and three frequencies of irrigation were tested: two, three and four times per day. The evaluated parameters were: plant height, stem diameter ratio, shoot / root ratio, leaf dry mass, root dry mass, total dry mass, green color index, Dickson quality index (IQD), water loss through leaching and substrate water retain capacity. The best results were observed in the seedlings produced in sewage sludge compound with eucalyptus bark submitted to the frequencies of two or three times a day.

scholarly journals Organic substrates and formononetin for Leucaena leucocephala saplings

2019 ◽  
Vol 13 ◽  
pp. 24
Author(s):  
Djalma Silva Pereira ◽  
Gilca Dos Santos Veloso ◽  
Rafaela Simão Abrahão Nóbrega ◽  
Altemar Dos Santos Dias ◽  
Audrey Ferreira Barbosa ◽  
...  
Keyword(s):  
Organic Compound ◽  
Leucaena Leucocephala ◽  
Quality Index ◽  
Dry Mass ◽  
Initial Growth ◽  
Organic Substrates ◽  
Height Ratio ◽  
Shoot Height ◽  
Randomized Experimental Design ◽  
Dickson Quality Index

To obtain quality saplings it is necessary to consider the requirements the plants have for a balanced nutriente intake. These can be made available from organic waste which, in many cases, is simple to acquire and can be recycled easily. Consequently, the current study evaluated the potential of organic substrates and formononetin for the production of Leucaena leucocephala seedlings. Experiments were carried out in a greenhouse, using a fully randomized experimental design, in a factorial arrangement (5 x 2), with five soil proportions: organic compound (100: 0, 80:20, 60:40, 40:60, 20 : 80) and two doses (0 and 1.0 mg per seed) of the isoflavonoid formononetine (7-hydroxy-4’-methoxy-isoflavone, Myconate®). After 60 days of sowing, shoot height, stem diameter, shoot height ratio, shoot diameter, number of nodules, aerial dry mass (ADM), root dry mass (RDM), total dry matter and Dickson Quality Index (DQI) of the Leucaena leucocephala seedlings were evaluated. Formononetin positively influenced dry root and total dry mass production, and the Dickson Quality Index of Leucaena leucocephala seedlings. A substrate with 46% soil and 54% organic compound gave the highest seedling DQI, this thereforee being the recommended proportions for this specieds during the initial growth phase.

scholarly journals Initial Growth of Physalis peruviana L. Seedlings on Different Substrates

2020 ◽  
pp. 1-7
Author(s):  
Jeniffer Ribeiro de Oliveira ◽  
Mayara Nascimento Santos ◽  
Joabe Martins de Souza ◽  
Vinícius de Souza Oliveira ◽  
Mariana Alexandre Alves Amourim
Keyword(s):  
Quality Index ◽  
Aerial Part ◽  
Dry Matter ◽  
Initial Growth ◽  
Fresh Matter ◽  
Physalis Peruviana ◽  
Seedling Root ◽  
Number Of Leaves ◽  
Mean Time ◽  
Dickson Quality Index

The substrate is one of the most important factors in the formation of the seedling and must present conditions suitable for germination and development of the seedling root system. The objective of this work was to evaluate the effect of different substrates on the initial growth of Physalis peruviana L. seedlings. The experiment was conducted at the Experimental Farm, of the Federal University of Espírito Santo– São Mateus (Brazil). The experimental design used was completely randomized, with three treatments (Soil, Provaso® and Bioplant®), seven replications and seven plants per plot, using seeds with 427 days of storage. At 56 days after sowing, the 10 most vigorous seedlings were selected for evaluation. The following characteristics were evaluated: percentage of emergence, emergence speed index (ESI), mean time of emergence (MET), number of leaves (NL), stem diameter (SD), aerial part length (APL), aerial part fresh matter (APFM), aerial part dry matter (APDM), root fresh matter (RFM), root dry matter (RDM) and Dickson quality index (DQI). The Provaso® substrate showed the best performance in all studied variables, being recommended for the production of Physalis seedlings.

scholarly journals SUBSTRATE VOLUMES AND APPLICATION OF PACLOBUTRAZOL FOR ORNAMENTAL PEPPER PRODUCTION

2019 ◽  
Vol 6 (3) ◽  
pp. 1-5
Author(s):  
Naine Parladore ◽  
Abimael Gomes da Silva ◽  
Edilson Costa ◽  
Flávio Ferreira da Silva Binotti ◽  
Laura Araújo Silva ◽  
...  
Keyword(s):  
Quality Index ◽  
Foliar Application ◽  
Dry Mass ◽  
Diameter Ratio ◽  
Stem Diameter ◽  
State University ◽  
Mato Grosso ◽  
Mato Grosso Do Sul ◽  
Dickson Quality Index

The objective was to evaluate the quality of ornamental pepper seedlings, cultivar Pyramid, in different substrate volumes, with foliar application of paclobutrazol (PBZ).The experiment was carried out at the Mato Grosso do Sul State University - UEMS, in Cassilândia - MS. The experimental design was completely randomized, in a 2 x 2 factorial scheme (growth container x foliar application of PBZ) with four replicates of 36 seedlings each. Plastic trays (cells with a volume of 50 mL) and polystyrene trays (Isopor®, 100 mL cells) were used as containers. The treatments were: polystyrene tray with PBZ application; polystyrene tray without PBZ application; plastic tray with PBZ application and plastic tray without the application of PBZ. Plant height, root length, stem diameter, shoot dry mass, root dry mass, total dry mass, height/stem diameter ratio (H/D), shoot/root ratio (S/R) and Dickson quality index were evaluated. Foliar application of paclobutrazol resulted in robust pepper seedlings with reduced size, suitable and desirable characteristics for ornamental purposes. The polystyrene trays with higher volume cells (100 mL) contributed to the higher quality of ornamental pepper seedlings.

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