SUBSTRATE VOLUMES AND APPLICATION OF PACLOBUTRAZOL FOR ORNAMENTAL PEPPER PRODUCTION

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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Soursop seedlings: biomasses and biometric relations in different farming environments and substrates – Part II

Engenharia Agrícola ◽

10.1590/1809-4430-eng.agric.v36n2p229-241/2016 ◽

2016 ◽

Vol 36 (2) ◽

pp. 229-241

Author(s):

Edílson Costa ◽

Adriano R. Sassaqui ◽

Anne K. da Silva ◽

Norton H. Rego ◽

Bruna G. Fina

Keyword(s):

Quality Index ◽

Low Density Polyethylene ◽

Joint Analysis ◽

State University ◽

High Quality ◽

Mato Grosso ◽

Randomized Design ◽

Completely Randomized Design ◽

Mato Grosso Do Sul

ABSTRACT The quality of seedling is critical to obtain vigorous plants in the field. The present study aimed to assess biomasses and biometric relations of soursop seedlings. We used different substrates in protected environments. The experiment was performed at the Universidade Estadual do Mato Grosso do Sul (UFMS) (State University of Mato Grosso do Sul). Five farming environments were developed in greenhouses: one covered with low-density polyethylene film (LDPE), another with with polyethylene and heat-reflective cloth under film under 50% shading in aluminized color, monofilament cloth under 50% shading in black, thermo-reflective cloth under 50% shading in aluminized color, and an environment covered with bacuri coconut straw. Substrates were made of manure, humus, cassava branches and vermiculite at different proportions. Each of them varying from 25%, 33.3%, 50% and 75% in mixture combination. Each environment was considered an experiment. A completely randomized design was adopted and later a joint analysis of them. Agricultural greenhouse covered with LDPE and thermo-reflective cloths under 50% of shading, proportionated seedlings with greater biomass. Substrates containing manure are the most suitable for soursop seedlings. High percentages of earthworm humus produce low quality soursop seedlings. Soursop seedlings had a Dickson’s quality index around 0.335. The greenhouse covered only with LDPE film did not produce high quality seedlings.

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Biostimulant and Micronutrient Applications in the Production of Acacia mangium Seedlings

Journal of Experimental Agriculture International ◽

10.9734/jeai/2019/v38i530313 ◽

2019 ◽

pp. 1-11

Author(s):

Nathália Ferreira Alves ◽

Sebastião Ferreira de Lima ◽

Ana Paula Leite de Lima ◽

Catia Aparecida Simon ◽

Pedro Paulo Virgilio Damis

Keyword(s):

Leaf Area ◽

Plant Height ◽

Quality Index ◽

Block Design ◽

Acacia Mangium ◽

Dry Mass ◽

Diameter Ratio ◽

Mato Grosso ◽

Randomized Complete Block Design ◽

Mato Grosso Do Sul

Aims: Evaluate the effects of applying biostimulant and micronutrients on Acacia mangium Willd seedlings. Study Design: A randomized complete block design was used in a 2x5 factorial scheme, with four replications. Place and Duration of Study: The experiment was conducted at the Universidade Federal de Mato Grosso do Sul, at the Chapadão do Sul Campus, MS, with the geographical coordinates 18º46’ 44” S and 52º36’ 49” W, in a nursery area from October 2015 to January 2016. Methodology: The treatments consisted of a combination of the presence or absence of a solution containing micronutrients and five doses of biostimulant (0, 7.5, 15.0, 22.5, and 30.0 mL per L of water). The commercial product Stimulate™ was used as the biostimulant, and the micronutrient solution was prepared at the concentration of 1.0%. The micronutrients in the solution were in the following formulations: ZnS04, H3BO3 and CuS04. The seeds were sown in tubes containing the commercial substrate Carolina Soil do Brasil, together with the use of Osmocote Plus™ fertilizer. Results: The use of biostimulant associated with micronutrients favored the rate of emergency speed. The doses of 24.8, 14.0 and 26.1 mL L-1 of biostimulant water provided the highest values for leaf area, plant height and total dry mass, respectively, when associated with the use of micronutrients. The height / diameter ratio decreased with increasing doses of biostimulant, while the Dicson quality index increased in the same condition. Conclusion: The use of micronutrients and biostimulants were favourable for the production of A. mangium seedlings. Only the height/diameter ratio (HDR) reduced for all biostimulant doses.

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INTERACTIONS OF BIOCHAR AND ORGANIC COMPOUND FOR SEEDLINGS PRODUCTION OF Magonia pubescens A. St.-Hil.

Revista Árvore ◽

10.1590/0100-67622015000400007 ◽

2015 ◽

Vol 39 (4) ◽

pp. 655-661 ◽

Cited By ~ 1

Author(s):

Stefany Lorrayny Lima ◽

Suelen Tamiozzo ◽

Edwin Camacho Palomino ◽

Fabiano André Petter ◽

Ben Hur Marimon-Junior

Keyword(s):

Organic Compound ◽

Quality Index ◽

The State ◽

Cattle Manure ◽

State University ◽

Mato Grosso ◽

Randomized Design ◽

Completely Randomized Design ◽

Dickson Quality Index

ABSTRACTThe objective of this study was to test the hypothesis that biochar, applied with cattle manure, promotes better development of seedlings of Magonia pubescens St. Hil. The experiment was conducted at the State University of Mato Grosso, Nova Xavantina, Brazil, in 2011. We used a completely randomized design, with twelve treatments and three replications. The substrates formed by the higher levels of cattle manure plus biochar (30%) provided better results of height, diameter and aerial biomass. However, the Dickson Quality Index has not confirmed the quality of seedlings in these treatments. We also observed that the doses of biochar (20 and 30%) when added separately to the Latosol, are not efficient for the growth improvement of the seedlings. Based on the present results, we validate the hypothesis that substrates formed with a mixture of cattle manure and biochar are effective to improve the production of seedlings of M. pubescens.

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Matrix management interfers in yield and quality of cocoa seedlings

Revista Brasileira de Fruticultura ◽

10.1590/0100-29452018582 ◽

2018 ◽

Vol 40 (3) ◽

Cited By ~ 1

Author(s):

Rafaela Alves Pereira ◽

Gedeon Almeida Gomes Júnior ◽

Eliandro Malta Rodrigues ◽

George Andrade Sodré ◽

Célio Kersul do Sacramento

Keyword(s):

Quality Index ◽

Quality Evaluation ◽

Pearson Correlation ◽

Dry Mass ◽

Experimental Unit ◽

Plant Management ◽

Yield And Quality ◽

Cocoa Seedlings ◽

Dickson Quality Index

Abstract The influence of two managements on yield and quality of plagiotropic mini-cuttings of four cacao clones was evaluated. The design was completely randomized in a 4 x 2 factorial scheme with 4 clones x 2 mother plant management (apical pruning and bending), with 10 replicates and one plant as experimental unit. Seedlings used were propagated by rooting of semi-woody cuttings of plagiotropic branches and at seven months of age, two seedlings of each clone were transplanted to 12 L pots filled with organomineral substrate. After transplantation, the apex of one of the plants was cut based on the count of the first six leaves from the apex. For bending, stems were folded and horizontally fixed. The first collection of mini-cuttings was performed 30 days after transplantation and the others during the following seven months. The yield of mini-cuttings was estimated during collections and part was used for rooting and quality evaluation of seedlings. After 90 days, 10 mini-cuttings of each clone were evaluated for quality using the Dickson quality index (DQI). Another 10 rooted mini-cuttings were transplanted to 1.5 L polyethylene bags and kept in greenhouse for another 120 days until final quality evaluation at 210 days. Data were submitted to analysis of variance and Tukey test at 5% probability. Shapiro-Wilk normality test and Pearson correlation analysis were performed. bending was more efficient in the average production of mini-cuttings especially for BN 34 clone. The Dickson quality index was correlated with root dry mass, at both 90 and 210 days, and the bending technique was responsible for the best DQI. Variable height was not adequate to estimate the quality of cocoa seedlings.

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Growth and quality of Brazilian pine tree seedlings as affected by container type and volume

Ornamental Horticulture ◽

10.1590/2447-536x.v25i3.2059 ◽

2019 ◽

Vol 25 (3) ◽

pp. 276-286

Author(s):

Leandro Marcolino Vieira ◽

Erik Nunes Gomes ◽

Theodore Aaron Brown ◽

Valdeci Constantino ◽

Flavio Zanette

Keyword(s):

Quality Index ◽

Nonwoven Fabric ◽

Dry Mass ◽

Tree Seedlings ◽

Pine Tree ◽

Plastic Bags ◽

Collar Diameter ◽

Root Collar ◽

Dickson Quality Index

Abstract Araucaria angustifolia (Bert.) O. Kuntze (Araucariaceae), commonly known as araucaria and Brazilian pine tree, can be grown for their edible pine nuts (pinhões), medicinal properties, and ornamental purposes. The aim was to assess the shoot and root growth and the overall quality of A. angustifolia seedlings grown in containers with different sizes, shapes and composition. Seeds were sowed in five containers: I – 126cm3 polypropylene cone-tainers (small cone-tainers); II – 290cm3 cone-tainers (large cone-tainers); III – 879cm3 polyethylene black bags; IV- 275 cm3 nonwoven fabric (TNT) containers (small TNT container) and; 493 cm3 nonwoven fabric (TNT) containers (large TNT container). Seedlings were evaluated 210 days after sowing, regarding the following variables: aboveground height (cm), root collar diameter (mm), shoot dry mass (g), roots dry mass (g), total dry mass (g), leaf area (cm2), roots area (cm2), roots volume (cm3), sturdiness quotient, root-shoot ratio and Dickson quality index. Height was superior for seedlings grown in the plastic bags (27.6 cm) and the large TNT containers (27.02 cm) when compared to the small and large cone-tainers (21.75 and 21.78 cm, respectively). Plastic bags also presented greater values of root-collar diameter, shoots, roots and total biomass and Dickson Quality index. Small and large TNT containers promoted lower root area and volume when compared to large polyethylene cone-tainers, but allowed for the same or better aboveground growth. Taking all results analyzed together, the polyethylene black bag promoted better growth and quality of Brazilian pine tree seedlings in comparison to the other containers.

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USE OF NANOCOMPOSITE HYDROGEL WITH N-UREA IN THE PRODUCTION OF EGGPLANT SEEDLINGS

JOURNAL OF NEOTROPICAL AGRICULTURE ◽

10.32404/rean.v7i4.5472 ◽

2020 ◽

Vol 7 (4) ◽

pp. 80-85

Author(s):

Josiane Souza Salles ◽

Marçal Henrique Amici Jorge ◽

Edilson Costa ◽

Raphael Augusto de Castro e Melo ◽

Alexandre Henrique Freitas de Lima ◽

...

Keyword(s):

Dry Matter ◽

Water Retention ◽

Water Retention Capacity ◽

Nanocomposite Hydrogel ◽

State University ◽

Retention Capacity ◽

Mato Grosso ◽

Number Of Leaves ◽

Mato Grosso Do Sul ◽

Dickson Quality Index

The use of quality seedlings of eggplant is directly related to the success of their production, with polymers added to the substrate, which work as water conditioners, increase the water retention capacity, and provide better seedling quality. The study aimed to evaluate the use of nanocomposite hydrogel enriched with different proportions of N-urea in the production of eggplant seedlings. The experiment was conducted at the State University of Mato Grosso do Sul, Cassilândia, MS, Brazil, from June to August 2019, under sombrite® 30%. Five treatments were evaluated, using the commercial substrate, Carolina Soil®: 1) commercial substrate without hydrogel; 2) commercial substrate with 0.075g of pure hydrogel (0.00g of N-urea)/15 mL of a substrate; 3) commercial substrate with 0.075g of hydrogel and 10% N-urea/15 mL of a substrate; 4) commercial substrate with 0.075g of hydrogel and 20% N-urea/15 mL of a substrate, and 5) commercial substrate with 0.075g of hydrogel and 40% N-urea/15 mL of a substrate. The experiment was conducted with four replications of 25 seedlings. The emergence speed index, percentage of emergence, height, number of leaves, stem diameter, shoot dry matter, root dry matter, and total dry matter were evaluated, as well as the Dickson Quality Index. The data were subjected to analysis of variance (SPEEDSTAT statistical software) and grouping test of means. A regression analysis was performed to adjust equations for some of the variables. The best seedlings can be obtained using the dosage of 28.83% N-urea with 0.075g of hydrogel per 15 ml of the substrate, according to the DQI adjustment, which includes several traits of the seedlings, thus reflecting on its quality.

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Morphophysiological quality of yerba mate plantlets produced by mini-cuttings

Semina Ciências Agrárias ◽

10.5433/1679-0359.2017v38n6p3515 ◽

2017 ◽

Vol 38 (6) ◽

pp. 3515 ◽

Cited By ~ 2

Author(s):

Nathalia Pimentel ◽

Kelen Haygert Lencina ◽

Marina Favarin Pedroso ◽

Tamires Manfio Somavilla ◽

Dilson Antônio Bisognin

Keyword(s):

Surface Area ◽

Quality Index ◽

Stem Diameter ◽

Pine Bark ◽

Yerba Mate ◽

Root Tips ◽

Shoot Height ◽

Polyethylene Bags ◽

Dickson Quality Index

The objective of this study was to evaluate the morphophysiological quality of yerba mate plantlets (Ilex paraguariensis A. St.-Hil.) produced by mini-cutting at four different times of year and cultivated in different containers. For the rooting of mini-cuttings, shoots of four yerba mate clones were collected four times during the year (April, July and October 2014 and January, 2015), cut into single-budded mini-cuttings and planted in equal proportions of pine bark-based commercial substrate, vermiculite and coarse sand. After 60 days of cultivation in a wet chamber, the rooted mini-cuttings were transferred to different containers: a 100 cm³ rigid polyethylene tube container and 500, 1500 and 3000 cm3 polyethylene bags containing pine bark-based commercial substrate and underground soil (2:1 v/v). A completely randomized design was used in a 4 x 4 factorial scheme, with five replications ranging from 5 to 20 mini-cuttings per experimental unit. The plantlets were evaluated for survival percentage, shoot height, stem diameter, shoot height/stem diameter ratio and number of leaves at 30, 60, 90 and 120 days of cultivation. At 120 days of cultivation, 10 plantlets from each treatment were randomly picked to evaluate shoot and root dry mass, Dickson quality index, shoot height, surface area, total volume and number of root tips. The best combinations of shoot height, length, surface area, total volume and number of root tips and Dickson quality index were found in plantlets produced in July, 2014, followed by plantlets produced in October,2014 and January, 2015. The polyethylene bags allowed the production of yerba mate plantlets with satisfactory quality of shoot and roots, regardless of the volume. Yerba mate plantlets can be produced by mini-cutting from July to January in polyethylene bags.

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

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v20n6p519-524 ◽

2016 ◽

Vol 20 (6) ◽

pp. 519-524 ◽

Cited By ~ 2

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.

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EFFECTS OF WATER MANAGEMENT AND COMPOSTED SEWAGE SLUDGE SUBSTRATES ON THE GROWTH AND QUALITY OF CLONAL EUCALYPTUS SEEDLINGS

FLORESTA ◽

10.5380/rf.v50i2.62952 ◽

2020 ◽

Vol 50 (2) ◽

pp. 1307 ◽

Cited By ~ 2

Author(s):

Mônica Moreno Gabira ◽

Richardson Barbosa Gomes Da Silva ◽

Caroline De Moura D’Andréa Mateus ◽

Roberto Lyra Villas Boas ◽

Magali Ribeiro Da Silva

Keyword(s):

Water Management ◽

Sewage Sludge ◽

Sugarcane Bagasse ◽

Quality Index ◽

Dry Mass ◽

Irrigation Depth ◽

Composted Sewage Sludge ◽

Eucalyptus Bark ◽

Dickson Quality Index

This study aimed to evaluate the effect of substrates made of composted sewage sludge and irrigation depths on the growth and quality of E. grandis x E. urophylla cuttings to optimize water management for each substrate. The substrates were obtained from sewage sludge composted with sugarcane bagasse or Eucalyptus bark, namely: composted sewage sludge with sugarcane bagasse (1:3 v:v); sewage sludge composted with Eucalyptus bark (1:3 v:v) and a mixture of both substrates in a volumetric proportion 2:1 (v:v). Commercial substrate composed of Sphagnum peat, vermiculite and rice husk (3:1:1 v:v: v) was used as a control. The irrigation depths tested were 11, 14 and 17 mm, applied in two daily applications. The substrates were physically and chemically characterized and height, stem diameter, shoot, root and total dry mass, Dickson quality index and root system conformation were measured to determine the growth and quality of seedlings. The substrates obtained through the composting of sewage sludge with sugarcane bagasse or Eucalyptus bark are fit for producing Eucalyptus cuttings, however, the water specificity of each substrate must be considered. Although an 11mm irrigation depth is indicted for the mixture of both substrates (2:1 v:v), a 17mm irrigation depth is needed for the sewage sludge composted with sugarcane bagasse (1:3 v:v) substrate.

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

FLORESTA ◽

10.5380/rf.v50i2.64158 ◽

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.

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