scholarly journals Nitrogen fertilization in the production of seedlings of Talisia esculenta (A. St. Hil) Radlk

2017 ◽  
Vol 21 (7) ◽  
pp. 443-447 ◽  
Author(s):  
Mauro da S. Tosta ◽  
João P. N. de Almeida ◽  
Glêidson B. de Góes ◽  
Priscilla de A. Freire ◽  
Vander Mendonça
Keyword(s):  
Experimental Design ◽  
Nitrogen Fertilization ◽  
Quality Index ◽  
Dry Matter ◽  
Shoot Length ◽  
Stem Diameter ◽  
N Source ◽  
Number Of Leaves ◽  
Non Destructive ◽  
Dickson Quality Index

ABSTRACT ‘Pitombeira’ does not have organized cultivation, thus requiring information related to the production of seedlings, particularly in relation to chemical fertilizer. In this context, an experiment was conducted in order to define the best dose of nitrogen (N), using urea as N source, to be applied in ‘pitombeira’ seedlings. The experimental design was complete randomized blocks with four replicates and ten plants per plot, testing five N doses (0, 400, 800, 1.600 and 3.200 mg dm-3). Data were submitted to analysis of variance and regression. The non-destructive measurements (number of leaves, stem diameter, shoot length and the ratio between shoot length and stem diameter) were evaluated at 30, 60, 90 and 120 days after transplanting (DAT). In addition, shoot, root and total dry matter and Dickson quality index were determined at 120 DAT. Nitrogen fertilizations, from the dose of 500 mg N dm-3 as top-dressing, were those that led to the most vigorous ‘pitombeira’ plants, while plants developed with dose above 1.600 mg of N dm-3 showed a reduction in their vigor.

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 INITIAL DEVELOPMENT OF GABIROBA (Campomanesia adamantium) ACCORDING TO FERTILIZATION WITH NITROGEN AND PHOSPHORUS

2021 ◽  
Vol 8 (2) ◽  
pp. e5825
Author(s):  
Jéssica Rodrigues de Mello Duarte ◽  
Scarlet De Aguiar Basílio ◽  
Nei Peixoto ◽  
Mariana Pina da Silva Berti
Keyword(s):  
Experimental Design ◽  
Plant Height ◽  
Nitrogen Fertilization ◽  
Stem Diameter ◽  
Nitrogen And Phosphorus ◽  
Initial Development ◽  
Tukey Test ◽  
Number Of Leaves ◽  
Plant Emergence ◽  
Different Doses

Campomanesia adamantium (Cambess.) Berg O. is a native of Savanna, popularly known as gabiroba, guavira, or gabiroba-do-campo, and has many uses, with its fruit being consumed fresh or processed. This study aimed to evaluate different doses of phosphorus and nitrogen in the initial development of gabiroba (Campomanesia adamantium) cultivated in pots. Five doses of phosphorus (0, 100, 200, 300, and 400kg ha-1 of P2O5) and three doses of nitrogen (0, 100, and 200 kg ha-1of N) were tested. The experimental design used was completely randomized in a 5x3 factorial scheme with six replications. The evaluations were carried out 120 days after plant emergence, and the variables analyzed were stem diameter, plant height, and number of leaves. Data were subjected to analysis of variance and F-test. The means were compared by the Tukey test at p0.05. Regression analyzes were adjusted for phosphorus doses. The gabiroba responds significantly to the addition of phosphorus, with the dose of 400 kg ha-1 of P2O5 providing the highest height and the dose of 300 kg ha-1 of P2O5 providing the greatest stem diameter and the number of leaves. Up to 120 days old, gabiroba seedlings do not respond significantly to nitrogen fertilization.

scholarly journals PRODUCTION OF STAR FRUIT ROOTSTOCKS FERTILIZED WITH DIFFERENT BORON DOSES

2017 ◽  
Vol 92 (3) ◽  
pp. 221
Author(s):  
Clariana Xavier ◽  
William Natale
Keyword(s):  
Experimental Design ◽  
Quality Index ◽  
Block Design ◽  
Dry Mass ◽  
Tropical Fruits ◽  
Nutritional Properties ◽  
Star Fruit ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
Dickson Quality Index

Among the tropical fruits, star fruit stands out due to its flavor and nutritional properties. Nevertheless, the information on fertilization and nutrition of this fruit is still scarce. For this reason, this study aimed to assess the effect of different boron doses on star fruit rootstock growth. The experimental design was randomized block design, consisting of five treatments of boron application (0, 1, 2, 3, and 4 mg dm−3) and four replications. Star fruit rootstock did not respond to boron doses applied to the substrate and hence it did not influence the parameters stem diameter, plant height, the number of leaves, dry mass of shoot, dry mass of roots, total dry mass, and Dickson quality index (DQI). A boron dose up to 4 mg dm−3 (800% of the recommended boron dose of 0.5 mg dm−3) did not produce symptoms of visual toxicity in the plant.

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 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 The effect of nitrogen fertilization level on growth, yield and nodulation of Indigofera zollingeriana at early nursery stage

2019 ◽  
Author(s):  
Budiman Nohong ◽  
Syahdar Baba ◽  
Muhammad Yusuf
Keyword(s):  
Plant Height ◽  
Nitrogen Fertilizer ◽  
Nitrogen Fertilization ◽  
Dry Matter ◽  
Stem Diameter ◽  
Nitrogen Fertilizers ◽  
High Dose ◽  
Dry Matter Yield ◽  
Number Of Leaves ◽  
Indigofera Zollingeriana

The objective of this study was to determine the effect of nitrogen fertilizer level on growth, dry matter yield and nodulation of Indigofera zollingeriana plant at during the nursery. The experiments were arranged in a complete randomized design consisting of four treatments and four replications. The utilized four levels of the nitrogen fertilizer were 0 (P0), 100 (P1), 150 (P2) and 200 kg N/ha (P3) equivalent to 0, 0.15, 0.23 and 0.30 g N/polybag respectively. The variables in this study included the plant height, stem diameter, number of petioles per plant, length of petiole, number of leaves per plant, root length for each plant and dry matter yield. The results showed that the fertilizer doses increased the plant height, stem diameter, number of leaves per plant, and dry matter yield of leaf, leaf petiole, stem, root and nodule. It could be concluded that nitrogen fertilization was effective in stimulating growth, production and nodulation at early nursery stage, yet higher nitrogen doses (200 Kg N/ha) are ineffective and have inhibitory effects of growth and production. Therefore, high-dose nitrogen fertilizers in legume plants should be avoided because Indigofera zollingeriana is able to fix nitrogen from the atmosphere as in other legumes.

scholarly journals Alternative substrates and controlled-release fertilizer in the production of yellow passion fruit seedlings

2020 ◽  
Vol 11 ◽  
pp. e3292
Author(s):  
Paulo Sérgio Braña Muniz ◽  
Romeu de Carvalho Andrade Neto ◽  
Aureny Maria Pereira Lunz ◽  
Ueliton Oliveira De Almeida ◽  
James Maciel De Araújo
Keyword(s):  
Controlled Release ◽  
Experimental Design ◽  
Quality Index ◽  
Dry Mass ◽  
Stem Diameter ◽  
Passion Fruit ◽  
Brazil Nut ◽  
Controlled Release Fertilizer ◽  
Number Of Leaves ◽  
Yellow Passion Fruit

There are many residues that can be used for agriculture, especially as a substrate. However, it is often necessary to fertilize the growing media so that the seedlings can be produced with quality. The objective of this study was to evaluate the use of alternative and commercial substrates associated with different controlled-release fertilizer levels in producing yellow passion fruit seedlings. The experiment was conducted at the Embrapa Acre seedling nursery, with 50% luminosity. We used a randomized block experimental design in a 5 x 3 factorial scheme with 15 treatments, 4 replicates, and 10 plants per plot. The treatments consisted of five controlled-release fertilizer levels (0 kg m-3, 3 kg m-3, 6 kg m-3, 9 kg m-3, and 12 kg m-3) combined with lumps of acerola fruits (LAF), Brazil nut peel (BNP), and commercial (CS) substrates. The evaluated variables were seed height, stem diameter, number of leaves, shoot dry mass (SDM), root dry mass (RDM), total dry mass (TDM), and seedling quality index (SQI). Use of the alternative lumps of acerola fruit (LAF) substrate associated with the 10 kg m-³ level of controlled-release fertilizer promoted the best results. BNP has potential for use as a substrate for passion fruit seedlings, however adjustments are necessary to achieve an adequate composition.

scholarly journals Correlations between growth variables and the Dickson quality index in forest seedlings

CERNE ◽  
2010 ◽  
Vol 16 (4) ◽  
pp. 457-464 ◽  
Author(s):  
Alexandre Francisco Binotto ◽  
Alessandro Dal' Col Lúcio ◽  
Sidinei José Lopes
Keyword(s):  
Quality Index ◽  
Dry Matter ◽  
Seedling Emergence ◽  
Pinus Elliottii ◽  
Seedling Quality ◽  
Base Diameter ◽  
Shoot Height ◽  
Stem Base ◽  
Number Of Leaves ◽  
Dickson Quality Index

This study aims to identify correlations between growth variables and the Dickson quality index in seedlings of Eucalyptus grandis and Pinus elliottii var. elliottii. The experiment was conducted in a greenhouse and the following variables were observed: stem base diameter, shoot height, number of leaves, leaf dry matter, stem base dry matter, root dry matter, shoot dry matter, total dry matter, ratio of shoot dry matter to root dry matter and ratio of shoot height to stem base diameter in E. grandis 60, 75, 90, 105 and 120 days after seedling emergence, and in P. elliottii 25, 50, 75, 100, 125, 150 and 175 days after seedling emergence. Using Pearson correlation and also path and regression analyses, correlations were analyzed between observed variables according to day after emergence and the Dickson quality index. Stem base diameter was found to have stronger correlation with days after emergence in comparison to shoot height, in both species. Root dry matter was found to have stronger correlation with the Dickson quality index. Stem base diameter was the most suitable parameter to indicate seedling quality due to its higher correlation level with the Dickson quality index. Shoot height was only effective to indicate seedling quality if analyzed together with stem base diameter. Variables relating to dry matter showed the highest correlations with the Dickson quality index (DQI), followed by stem base diameter. Conversely, number of leaves showed the poorest correlations with DQI, followed by seedling height.

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.

Sign in / Sign up

Export Citation Format

Share Document