scholarly journals EFFECT OF PHOSPHATE FERTILIZATION AND BASE SATURATION OF SUBSTRATE ON THE SEEDLINGS GROWTH AND QUALITY OF Plathymenia foliolosa Benth.

2017 ◽  
Vol 41 (1) ◽  
Author(s):  
Eliane Cristina Sampaio de Freitas ◽  
Haroldo Nogueira de Paiva ◽  
Helio Garcia Leite ◽  
Sílvio Nolasco de Oliveira Neto
Keyword(s):  
Factorial Design ◽  
Quality Index ◽  
Aerial Part ◽  
Dry Matter ◽  
Base Saturation ◽  
Phosphate Fertilization ◽  
Neck Diameter ◽  
Dickson Quality Index

ABSTRACT This study aimed to evaluate the growth and quality of seedlings of Plathymenia foliolosa Benth in response to base saturation of substrate and phosphate fertilization. The treatments were arranged in a factorial design of 6 P levels (0, 120, 240, 360, 480 and 600 mg dm-3) by 5 base saturation levels (3.5, 25, 40, 55, 70 %), in randomized blocks with four replications. The height of aerial part, neck diameter, shoot dry matter, root dry matter and total dry matter were determined at 118 days after the transplanting. It was still calculated the relation shoot dry matter/root dry matter and the Dickson Quality Index. There were significant effects of the phosphate fertilization for all studied variables. The base saturation had influence on all studied variables, except for the shoot dry matter/root dry matter relation. No significant effect of the interaction between base saturation of substrate and phosphate fertilization was observed on seedlings growth and quality. For the studied conditions, it is recommended 300 mg dm-3 of P for the production of quality seedlings of Plathymenia foliolosa without the necessity of liming.

scholarly journals QUALITY OF CUCUMBER SEEDLINGS GROWN IN DIFFERENT CONTAINERS

2016 ◽  
Vol 3 (1) ◽  
pp. 33-38
Author(s):  
Bruna Finotii Fonseca Reis de Mello ◽  
Mateus Vieira Trevisan ◽  
Fábio Steiner
Keyword(s):  
Quality Index ◽  
Dry Matter ◽  
Vegetable Production ◽  
High Quality ◽  
Cucumis Sativus L ◽  
Cucumber Seedlings ◽  
Key Factor ◽  
Design Characteristics ◽  
Dickson Quality Index

The use of high quality seedlings is a key factor for the success of vegetable production, and the container size and design characteristics of the containers are important determinants of seedling quality. A experiment was conducted to investigate the effects of different container types on quality of cucumber seedlings (Cucumis sativus L., cv. Aodai Melhorado). Seedlings were grown in a seedling nursery with shadow protection at 50% in different containers: (i) 128-cell trays; (ii) 64-cell trays; (iii) tubes of 120 cm3; and (iv) plastic cups of 180 cm3. The plant height, diameter, root length, shoot dry matter, root dry matter, sturdiness quotient (SQ), shoot:root dry matter ratio (SRR) and Dickson quality index (DQI) were measured at 21st days after sowing. The production of cucumber seedlings in 64-cell trays, polypropylene tubes of 120 cm3 and plastic cups of 180 cm3 resulted in the highest values for the majority of investigated traits. The tray of 128-cells results in lower quality cucumber seedlings compared to other containers. Tubes with volume of 120 cm3 and plastic cups with volume of 180 cm3 are more appropriate containers for the production of high quality cucumber seedlings. The DQI is a good indicator of the standard of quality of cucumber seedlings.

scholarly journals Growth and quality of mangosteen seedlings (Garcinia mangostana L.) in response to the application of humic acids

2019 ◽  
Vol 41 (1) ◽  
Author(s):  
Gedeon Almeida Gomes Júnior ◽  
Rafaela Alves Pereira ◽  
George Andrade Sodré ◽  
Eduardo Gross
Keyword(s):  
Humic Acids ◽  
Quality Index ◽  
Dry Matter ◽  
Growth Promoter ◽  
Seedling Production ◽  
Garcinia Mangostana ◽  
Number Of Leaves ◽  
The One ◽  
Dickson Quality Index

Abstract The time of formation of mangosteen seedlings propagated by seeds can be considered as the biggest difficulty in the seedling production system of this species. Considering that the use of humic acids as a growth promoter has been well documented in some species, the objective of this work was to evaluate the growth of mangosteen seedlings in response to the application of humic acid (HA) doses extracted from vermicompost (0; 2; 20; 40; 200 mg C L-1). Growth rate was determined using the following variables: stem diameter, plant height, number of leaves, leaf area, stem dry matter, leaf dry matter, shoot dry matter, root dry matter, total dry matter and Dickson quality index . The dose 150 mg C L-1 was the one that approached the maximum values and therefore should be recommended for the production of seedlings. The results at 240 days after planting (DAP) showed that the HA increased the growth of mangosteen seedlings, helping to reduce the time of seedling formation under conditions for permanent planting.

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 Análise da emergência e desenvolvimento inicial de plântulas de Handroanthus roseo-albus (Ridl.) Mattos e Handroanthus serratifolius (Vahl) S.O.Grose sobre diferentes tipos de substratos

2021 ◽  
Vol 1 (53) ◽  
pp. 18
Author(s):  
Regimonica Craveiro Da Silva ◽  
Bruno Aurélio Campos Aguiar ◽  
Taiuan Bruno Almeida Gomes ◽  
Milena Oliveira Xavier ◽  
Euclides Figuerêdo Fonseca ◽  
...  
Keyword(s):  
Quality Index ◽  
Aerial Part ◽  
Dry Matter ◽  
Direct Relationship ◽  
Morphological Characteristics ◽  
Rice Husks ◽  
Initial Development ◽  
Emergence Percentage ◽  
Rate Of Emergence ◽  
Dickson Quality Index

<p class="Normal1"><span class="fontstyle0">The formation of quality forest seedlings has a direct relationship with the substrates that will be used; the germination of seeds and the formation of the root system and the aerial part are associated with the particular characteristics of each substrate. Therefore, the study aimed to evaluate the influence of different substrates on the formation of ipê-branco and ipê-amarelo seedlings. The experimental design adopted was completely random, with the treatments distributed in a 2 x 5 factorial arrangement (2 species and 5 substrates), with 4 replications. We used the following components to compose the substrates: carbonized rice husks (CAC), fresh rice husks (CA), autoclaved for two hours at 120 °C, commercial substrate (SC) Bioflora, washed sand (AL), and bovine manure (EB). The study was arranged in five treatments: treatment 1 - CAC, treatment 2 - CA, treatment 3 - SC, treatment 4 - AL and treatment 5 - EB. The following morphological characteristics have been evaluated: Collection diameter, height of the seedlings and the Dickson Quality Index (DQI) of the seedlings, which was obtained through the variables: weight of total dry matter (TWMW), weight of dry matter of the aerial part (TWMW), weight of dry matter of the root (RWMW), H and DC. The emergence speed and the emergence percentage index were lower for both species in the treatment containing 100% in natura rice husk. The commercial substrate Bioflora, enabled good performance in the emergence of both species, obtaining satisfactory results in terms of the percentage rate of emergence and a higher speed of emergence between treatments. The bovine manure substrate obtained superior results in the initial development for both Handroanthus serratifolius (Vahl) S.O.Grose and Handroanthus roseo-albus (Ridl.) Mattos.</span><br /><br /></p>

scholarly journals QUALITY OF CAMBUCI PEPPER SEEDLINGS IN RESPONSE TO THE APPLICATION OF NUTRIENT SOLUTIONS

2020 ◽  
Vol 7 (4) ◽  
pp. 73-79
Author(s):  
Nicholas Taborda Nordi ◽  
Eduardo Santana Aires ◽  
Thatiane Nepomuceno Alves ◽  
Samara Moreira Perisato ◽  
Antonio Ismael Inácio Cardoso
Keyword(s):  
Quality Index ◽  
Dry Matter ◽  
Stem Diameter ◽  
Control Treatment ◽  
Final Performance ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Nutrient Solutions ◽  
Dickson Quality Index

One of the main stages in the production system of a crop is the production of quality seedlings since it influences the plants' final performance in the field and their production. The study aimed to evaluate different nutrient solutions in the production of Cambuci pepper seedlings. The design used was a complete randomized design, with six treatments corresponding to the nutrient solutions proposed for the pepper crop by Castellane and Araújo, Claudio Roberto, Hoagland, and Arnon, besides the commercial products Plenan® and Biobokashi®, and a control treatment without fertilization, with six replications. The final evaluation was carried out 45 days after sowing. The following variables were analyzed: stem diameter, plant height, leaf dry matter, shoot dry matter, the number of leaves, relative chlorophyll index ("Spad"), and Dickson quality index. The seedlings subjected to the applications of Claudio Roberto and Hoagland and Arnon solutions have the highest heights and number of leaves, the largest stem diameter, shoot dry matter, leaf area, and Dickson quality index with 2.60 and 2.51 mm, 0.54 and 0.62 g, 38.64 and 41.91 cm2, and 0.107; 0.097, respectively. The Hoagland and Arnon nutrient solution provided the best characteristics to produce Cambuci pepper seedlings.

scholarly journals Comparison of Methodologies to Determine the Optimum Plot Size for Okra Seedlings Evaluation

2019 ◽  
Vol 11 (5) ◽  
pp. 388
Author(s):  
Karina Tiemi Hassuda dos Karina Tiemi Hassuda dos Santos ◽  
Maria Luiza Pereira Barbosa Pinto ◽  
Camila Pinto de Almeida ◽  
Adriano Alves Fernandes ◽  
Vinicius de Souza Oliveira ◽  
...  
Keyword(s):  
Quality Index ◽  
Dry Matter ◽  
Optimum Size ◽  
Plot Size ◽  
Maximum Curvature ◽  
Bootstrap Simulation ◽  
Significant Difference ◽  
Experimental Errors ◽  
Dickson Quality Index

The production of okra using seedlings is a practice increasingly used by farmers. However, this system still lacks further research involving substrates, tray types, cell volume, pest control and disease. For this it is important to determine the optimum size of the plots, in order to reduce the experimental errors and the expenses with the experiment. The objective of this work was to determine the optimum plot size for experiments involving okra seedlings produced in Styrofoam trays of 128 cells using different methods. The methods were the maximum curvature, the maximum curvature with bootstrap simulation and the maximum curvature of the coefficient of variation. The evaluated characteristics were aerial part height, stem diameter, aerial dry matter, root dry matter, total dry matter and quality of seedlings as measured by Dickson quality index. The results showed that the optimum plot size is different between the evaluated characteristics and for characteristics there is no significant difference in the optimum plot size between the three different methods. The optimum size for evaluating okra seedlings produced in Styrofoam trays of 128 cells is 10 seedlings per plot and is indicated the use of the maximum curvature method using a bootstrap simulation.

scholarly journals Growth and Quality of Genotype PS-1319 Cacao Seedlings Produced Under Different Irrigation Depths

2019 ◽  
Vol 11 (16) ◽  
pp. 238
Author(s):  
Stefany Sampaio Silveira ◽  
Robson Prucoli Posse ◽  
Sophia Machado Ferreira da Silva ◽  
Vinicius de Souza Oliveira ◽  
Francielly Valani ◽  
...  
Keyword(s):  
Leaf Area ◽  
Quality Index ◽  
Aerial Part ◽  
Dry Mass ◽  
Federal Institute ◽  
Randomized Design ◽  
Northwestern Region ◽  
Cocoa Seedlings ◽  
Dickson Quality Index

Due to the lack of information on the water demand of cocoa seedlings, empirical techniques have been used in the supply of water to the seedlings, potentializing losses in their growth and development. In this context, the present study aimed to determine the optimal irrigation depth for a good development of the genotype PS-1319 cocoa seedlings. The study took place at the Federal Institute of Esp&iacute;rito Santo-Campus Itapina, located in the Colatina, a city situated in the northwestern region of the state of Esp&iacute;rito Santo, Brazil, in an experimental greenhouse of the campus, between October 20 and December 15, 2017. The experiment was conducted in a completely randomized design (CRD) using 20 seedlings of the genotype PS-1319 cacao per treatment. The treatments consisted of daily applications of six irrigation depths, corresponding to 4, 6, 8, 10, 12 and 14 mm d-1, being evaluated their effects on the morphological parameters (leaf area; dry mass of the aerial part, dry mass of the root system and total dry mass; height of the aerial part and stem diameter) and the quality (Dickson quality index). The applied depths interfered, both in the development and the quality of the seedlings, with quadratic adjustments for the leaf area, dry mass of the aerial part and total dry mass, diameter and for the Dickson quality index. The best responses to the studied parameters were provided by the 8.33 mm d-1 depth, which is recommended as an ideal for production of genotype PS-1319 cacao seedlings.

scholarly journals Effect of Salinity and Potassium on Phytomass and Quality of Guava Rootstocks

2018 ◽  
Vol 10 (2) ◽  
pp. 308
Author(s):  
Benedito F. Bonifácio ◽  
Reginaldo G. Nobre ◽  
Hans R. Gheyi ◽  
Geovani S. De Lima ◽  
Leandro De P. Souza ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Irrigation Water ◽  
Quality Index ◽  
Dry Matter ◽  
Competitive Inhibition ◽  
Sandy Loam ◽  
Dry Matter Accumulation ◽  
Potassium Fertilization ◽  
Dickson Quality Index

Potassium fertilization is one of the main techniques that has been studied to mitigateeffects of salt stress in plants, probably because potassium reduces the toxic effect of sodium by competitive inhibition and provides greater tolerance to genotypes of plants to salinity. Hence, this study aimed to evaluate the effect of different salinities of irrigation water in the formation of phytomass and quality of rootstocks of guava cv. Paluma, fertilized with increasing doses of potassium, in an experiment conducted using eutrophic Fluvic Neosol with sandy loam texture under greenhouse conditions, in the municipality of Pombal-PB, Brazil. The experimental design was randomized blocks in 5 × 4 factorial scheme, and the treatments resulted from the combination of five levels of irrigation water electrical conductivity (ECw = 0.3; 1.1; 1.9; 2.7 and 3.5 dS m-1) and four K doses (70, 100, 130 and 160% of K), in which the dose of 100% K corresponded to 726 mg of K dm-3 of substrate, with four replicates and two plants evaluated in each plot. Irrigation with water salinity from 0.3 dS m-1 compromises the total dry matter accumulation and the Dickson quality index of guava rootstocks cv. Paluma at 225 days after emergence (DAE), independent of potassium fertilization. Fertilization with different potassium doses did not promote differences in phytomasses and quality of rootstocks. There was no significant effect of interaction (salt × doses of K) on the studied variables.

scholarly journals Estimates of genetic gains for growth traits in young plants of Eucalyptus urophylla S. T. Blake

CERNE ◽  
2011 ◽  
Vol 17 (2) ◽  
pp. 189-193 ◽  
Author(s):  
Thais Galhardo Godoy ◽  
Sebastião Carlos da Silva Rosado
Keyword(s):  
Quality Index ◽  
Dry Matter ◽  
Growth Traits ◽  
Block Design ◽  
Genetic Gains ◽  
Random Block ◽  
Collar Diameter ◽  
Random Block Design ◽  
Root Collar ◽  
Dickson Quality Index

The objective of this study was the selection of superior genotypes for growth traits, correlating them to initial height growth in the field, at age eight months. A random block design was used in the nursery, with eight clones, three replicates and four plants per plot. And a random block design was also used in the field, with eight clones, four replicate blocks and nine plants per plot. Data being analyzed in the nursery at age 120 days included: height of field seedling, at age eight months (Hc), height of nursery seedling (Hm), root collar diameter (Dc), shoot diameter (Db), shoot dry matter (PMSPA), root dry matter (PMSR), total dry matter (PMST), ratio of shoot dry matter to root dry matter (PMSPA/PMSR), Dickson quality index of root collar diameter (IQD-Dc), Dickson quality index of shoot diameter (IQD-Db). Analyses of variance showed that significant genetic differences exist among clones for all traits and, given the high heritability values found, the estimated genetic gains were generically very high. As for predicted indirect genetic gain, selection in nursery seedlings for Dc, PMSPA/PMSR, IQD-Dc provided the highest values of indirect gain in field seedling height.

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.

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