scholarly journals Resposta de Handroanthus heptaphyllus Mattos em diferentes volumes de substrato e adubação de base.

FLORESTA ◽  
2020 ◽  
Vol 50 (4) ◽  
pp. 1770
Author(s):  
Thaise Da Silva TONETTO ◽  
Maristela Machado Araujo ◽  
Álvaro Luís Pasquetti Berghetti ◽  
Márcio Carlos Navroski
Keyword(s):  
Controlled Release ◽  
Quality Index ◽  
Lower Cost ◽  
Dry Mass ◽  
High Dose ◽  
Native Forest ◽  
Forest Species ◽  
Definition Of ◽  
Appropriate Practices ◽  
Dickson Quality Index

Handroanthus heptaphyllus (Martius) Mattos response in different volumes of substrate and base fertilization. The native forest species require the adoption of appropriate practices in the nursery, such as the definition of the container volume and base fertilizer, to develop seedlings at lower cost. Thus, this study aimed to verify the performance of Handroanthus heptaphyllus seedlings grown in nurseries in different sizes of containers and different dosage of controlled release fertilizer (CRF). There was interaction between the volume of container and the fertilization for the height (H), stem diameter (SD), and H/SD relation. The shoot dry mass variable (SDM), root dry mass (RDM), total dry mass (TDM), SDM/RDM relation, Dickson quality index (DCI) and leaf area (LA) were influenced only by the base fertilizer. The highest values for these variables were, respectively, 15.68 cm; 6.55 mm, 2.58 cm mm-1; 2.05 g; 2.03 g; 3.84 g; 1.46; 1.15 and 246.97 cm². The H. heptaphyllus species is nutritionally demanding, positively responding to the high dose of CRF. Seedlings of H. heptaphyllus produced in tubes of 180 cm³ with 7.0 g L-1 of CRF present adequate growth.

Influência da Casca de Arroz Carbonizada no Desenvolvimento de Mudas de Enterolobium contortisiliquum (VELL.) Morong

UNICIÊNCIAS ◽  
2018 ◽  
Vol 22 (2) ◽  
pp. 76
Author(s):  
Vinícius Moreira Vaz ◽  
Douglas Santos Gonçalves ◽  
Priscila Bezerra De Souza
Keyword(s):  
Rice Husk ◽  
Quality Index ◽  
Dry Mass ◽  
Native Forest ◽  
Seedling Production ◽  
University Campus ◽  
Forest Nursery ◽  
Forest Species ◽  
Shoot Height ◽  
Dickson Quality Index

Entre as espécies florestais nativas indicadas para a recuperação de áreas degradas está o Enterolobium contortisiliquum (Vell.) Morong, pouco se sabe sobre os processos germinativos e de produção de mudas desta espécie. Diante disso, o presente estudo teve como objetivo avaliar a influência da casca de arroz carbonizada no desenvolvimento de mudas de Enterolobium contortisiliquum. O experimento foi conduzido no Viveiro Florestal da Universidade Federal do Tocantins, campus Universitário de Gurupi – TO, em que foram instalados cinco tratamentos e 20 repetições, com adição de Casca de Arroz Carbonizada (CAC) no substrato comercial Bioflora® (SCB), nas proporções de (T1) 0% CAC + 100% SCB, (T2) 25% CAC + 75% SCB, (T3) 50% CAC + 50% SCB, (T4) 75% CAC + 25% SCB e (T5) 100% CAC. Aos 20, 40 e 60 dias, após a semeadura, foram avaliados os parâmetros altura da parte aérea e diâmetro do coleto. Ao final de 60 dias foram obtidos os parâmetros: peso da massa seca da raiz, peso da massa seca da parte aérea, peso da massa seca total e índice de qualidade de Dickson. O delineamento experimental utilizado foi o inteiramente casualizado (DIC), as médias dos tratamentos foram comparadas através do Software Assistat 7.7 pelo teste Scott e Knott ao nível de 5% de probabilidade. O uso de casca de arroz carbonizada (CAC) influenciou no desenvolvimento de mudas de Enterolobium contortisiliquum (Vell.) Morong. Palavras-chave: Substratos Alternativos. Tamboril. Viveiro Florestal AbstractAmong the native forest species indicated for the recovery of degraded areas is Enterolobium contortisiliquum (Vell.) Morong, little is known about the germination processes and seedling production of this species. Therefore, the present study aimed to evaluate the influence of carbonized rice husk on the development of Enterolobium contortisiliquum seedlings. The experiment was conducted in the Forest Nursery of the Federal University of Tocantins, University campus of Gurupi - TO, five treatments and 20 replicates were installed, with the addition of Carbonized Rice Peel (CAC) in the commercial substratum Bioflora ® (SCB), in proportions (T1) 0% CAC + 100% SCB, (T2) 25% CAC + 75% SCB, (T3) 50% CAC + 50% SCB, (T4) 75% CAC + 25% SCB and (T5) 100% CAC . At 20, 40 and 60 days after sowing, the parameters of shoot height and shoot diameter were evaluated. At the end of 60 days, the following parameters were obtained: root dry mass weight, shoot dry mass weight, total dry mass weight and Dickson quality index. The used experimental design  was completely randomized (DIC), the means of the treatments were compared using Software Assistat 7.7 by the Scott and Knott test at the 5% probability level. The use of carbonized rice husk (CAC) influenced the development of Enterolobium contortisiliquum (Vell.) Morong seedlings. Keywords: Alternative Substrates. Monkfish. Forest Nursery

scholarly journals GROWTH AND PHYSIOLOGY OF Balfourodendron riedelianum SEEDLINGS IN THE NURSERY AND IN THE FIELD

FLORESTA ◽  
2019 ◽  
Vol 49 (4) ◽  
pp. 763
Author(s):  
Felipe Turchetto ◽  
Jessé Caletti Mezzomo ◽  
Maristela Machado Araujo ◽  
Adriana Maria Griebeler ◽  
Álvaro Luís Pasquetti Berghetti ◽  
...  
Keyword(s):  
Chlorophyll Fluorescence ◽  
Controlled Release ◽  
Leaf Area ◽  
Quality Index ◽  
Dry Mass ◽  
Positive Influence ◽  
Total Root Length ◽  
Plastic Bags ◽  
Chlorophyll Index ◽  
Dickson Quality Index

The present study aimed to determine the effect of different container volumes and doses of controlled release fertilizer (CRF) on the morphophysiological aspects of Balfourodendron riedelianum seedlings in the nursery and verify if these responses were replicated in the field. For the production of seedlings in nursery, three container volumes (180 and 280 cm³ polypropylene tubes and 500 cm³ plastic bags) and four doses of CRF (0, 4, 8, and 12 g L-1 of substrate) were tested, and the seedlings were grown for 240 days. At the end of the nursery period, the following parameters were measured: height (H); stem diameter (SD); dry mass of shoot, root, and total; root length; leaf area; and chlorophyll fluorescence. The H/SD ratio and the Dickson Quality Index were calculated. The same treatments were evaluated in the field at 540 days after planting. Survival, height, and diameter increase, aerial dry mass, leaf area, chlorophyll a fluorescence and chlorophyll index (a, b and total) were measured. Basic fertilization using CRF had a positive influence on the production of B. riedelianum seedlings. It is recommended to use a 180 cm³ tube and a dose of 12 g L-1 CRF for the production of seedlings. The results obtained in the nursery for the production of seedlings were confirmed to occur in the field.

scholarly journals Controlled-release fertilizer increases growth, chlorophyll content and overall quality of loquat seedlings

2020 ◽  
Vol 11 ◽  
pp. e3353
Author(s):  
Erik Nunes Gomes ◽  
Leandro Marcolino Vieira ◽  
Cíntia de Moraes Fagundes ◽  
Überson Boaretto Rossa ◽  
Mauro Brasil Dias Tofanelli ◽  
...  
Keyword(s):  
Controlled Release ◽  
Chlorophyll Content ◽  
Quality Index ◽  
Polynomial Regression ◽  
Dry Mass ◽  
Eriobotrya Japonica ◽  
Controlled Release Fertilizer ◽  
Linear Behavior ◽  
Growth Quality ◽  
Dickson Quality Index

Eriobotrya japonica (Thunb.) Lindl. (Rosaceae), commonly known as the loquat tree, is widely cultivated due to production of edible fruits, which can be consumed fresh or processed into different food products. Enhancement of loquat seedlings quality is an important issue for more efficient propagation protocols, including rootstock production. The objective with the present study was to assess the effects of increasing doses of controlled-release fertilizer on loquat seedlings growth, quality and chlorophyll content. Seeds were sowed in containers filled with commercial substrate previously treated with different doses of controlled-release fertilizer (N, P, K, Mg, S and micronutrients): 0.0 (control), 2.5, 5.0, 7.5 and 10.0 kg per cubic meter of substrate (kg m-³). Seedlings were evaluated 182 days after sowing and the data were submitted to polynomial regression analyses. Increasing doses of the fertilizer promoted increasing linear behavior on seedlings height, root collar diameter, leaf area, roots and shoots dry mass and Dickson quality index. Chlorophylls a, b and total chlorophylls increased up to the dose of 7.5 kg m-³, followed by a decrease at the dose of 10 kg m-³. The dose of 10 kg m-³ promoted the highest values of Dickson quality index and growing variables on loquat seedlings.

scholarly journals GROWTH AND NUTRITION OF Paratecoma peroba SEEDLINGS IN DIFFERENT TUBE VOLUMES AND CONTROLLED-RELEASE FERTILIZERS

FLORESTA ◽  
2020 ◽  
Vol 50 (3) ◽  
pp. 1613
Author(s):  
Thais Arão Feletti ◽  
Emanuel França Araújo ◽  
Elzimar De Oliveira Gonçalves ◽  
Thamara Arão Feletti ◽  
Aline Ramalho Dos Santos ◽  
...  
Keyword(s):  
Controlled Release ◽  
Nutrient Balance ◽  
Mineral Fertilizer ◽  
Integrated System ◽  
Native Forest ◽  
Forest Species ◽  
Randomized Design ◽  
Growth And Nutrition ◽  
Nutritional Balance ◽  
Balance Index

Paratecoma peroba is a native forest species of great economic and ecological interest, currently at risk of extinction from selective and illegal exploitation; however, there are no established parameters for the production of seedlings of this species. The objective of this study was to analyze the growth and nutritional balance of P. peroba seedlings grown in polypropylene tubes of different sizes with variable doses of controlled-release fertilizer (CRF). Three volumes of tubes (120, 180, and 280 cm3), four CRF doses (0, 2.5, 5, and 7.5 kg m-3), and a conventional mineral fertilizer (CF) were tested as indicated in the literature for native forest species: arranged in a completely randomized design in a 3 × 5 factorial scheme, with four replicates composed of 16 seedlings. After 180 days, the percentage of survival, growth variables, indices of the diagnosis and recommendation integrated system, and the average nutrient balance index of the seedlings were analyzed. Based on the total dry matter and the mean nutritional balance index, the combination of a 280 cm³ tube with a 7.5 kg m-3 CRF dose was the most effective in the production of P. peroba seedlings.

scholarly journals Matrix management interfers in yield and quality of cocoa seedlings

2018 ◽  
Vol 40 (3) ◽  
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.

scholarly journals EFEITO DE TELAS DE SOMBREAMENTO NO CRESCIMENTO E PROTEÇÃO DE MUDAS DE Toona ciliata SOB BAIXAS TEMPERATURAS

FLORESTA ◽  
2014 ◽  
Vol 44 (4) ◽  
pp. 607
Author(s):  
Rudinei De Marco ◽  
Bruno Conte ◽  
Edison Rogério Perrando ◽  
Fabiano De Oliveira Fortes ◽  
Lucindo Somavilla ◽  
...  
Keyword(s):  
Adverse Effect ◽  
Low Temperatures ◽  
Quality Index ◽  
Aerial Part ◽  
Single Layer ◽  
Dry Mass ◽  
Plastic Bags ◽  
Toona Ciliata ◽  
Santa Maria ◽  
Dickson Quality Index

O objetivo deste trabalho foi avaliar a influência de diferentes camadas de telas de sombreamento no crescimento e na proteção de mudas de Toona ciliata em períodos de suscetibilidade a geadas. O estudo foi conduzido na Universidade Federal de Santa Maria, Campus Frederico Westphalen, RS. Para a realização do experimento, mudas de Toona ciliata foram mantidas em sacos plásticos com capacidade de três litros e submetidas a quatro tratamentos: mudas sem proteção e mudas sob proteção com camada simples, dupla e tripla de sombreamento. O delineamento foi o inteiramente casualizado, com quatro repetições de oito mudas por repetição. Foi avaliado o número de mudas com folhas apicais necrosadas, a altura da parte aérea, o diâmetro do colo e a massa seca radicular, aérea e total. Por meio dessas variáveis, foi possível determinar o Índice de Produtividade, o Índice de Qualidade de Dickson e as relações altura/diâmetro e altura/massa seca da parte aérea. A utilização de telas de sombreamento mostrou-se eficiente para a proteção das mudas contra o efeito adverso da geada. O uso de uma camada simples de sombreamento resultou em maior proteção e consequentemente forneceu as melhores características dendrométricas em relação às demais intensidades de sombreamento.Palavras-chave: Tela de proteção; tolerância à geada; cedro australiano. AbstractEffect of shading screens on growth and protection of Toona ciliata seedlings under low temperatures. This research aimed to evaluate the influence of different shading screens layers on the growth and protection of Toona ciliata seedlings in periods of frost susceptibility. The research was conducted on the Santa Maria Federal University, Frederico Westphalen Campus, RS. For the experiment, Toona ciliata seedlings maintained in plastic bags with three liters of capacity each were submitted to four treatments: unprotected seedlings, seedlings under protection with a single shading layer, double and triple. The experimental design was the completely randomized, with four repetitions of eight seedlings each. It was evaluated the number of seedlings with necrosed apical leaves, the aerial part height, the lap diameter and the dry mass of root, aerial and total. By such variables, it was possible to determine the Produtivity Index, the Dickson Quality Index and the relations height/diameter and height/dry mass of aerial part. The use of shading screens showed up efficient to protect the seedlings against the adverse effect of frost. The use of a single layer of shading resulted in a greater protection and consequently provided the best dendrometric characteristics, compared to the others levels of shading.Keywords: Screen protection; tolerance to frost; Australian cedar.

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

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.

scholarly journals Agricultural residues as substrates in the production of formosa papaya, okra and zucchini seedlings

2020 ◽  
Vol 36 (6) ◽  
Author(s):  
Paola Lo Monaco ◽  
Larissa Ionara Silva Paula ◽  
Paola Honorato Salla ◽  
Ismail Ramalho Haddade ◽  
Gustavo Haddad Souza Vieira ◽  
...  
Keyword(s):  
Root Length ◽  
Quality Index ◽  
Dry Mass ◽  
High Potential ◽  
Grape Pomace ◽  
Alternative Substrate ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Organic Compost ◽  
Dickson Quality Index

Using residues generated in agriculture to produce seedlingsis an economically interesting alternative, besides being a way to reduce the environmental impacts caused by their inadequate disposal. This study aimed to evaluate the potential of using coffee chaff (CC) and organic compost (OC) as substrate components for the production of Formosa papaya seedlings and the potential of grape pomace (GP), a vitiviniculture residue, in the composition of substrates for the production of okra and zucchini seedlings. We carried out two trials in a completely randomized design (CRD): the first had seven treatments and six replicates: T0: 100% commercial substrate Bioplant® (CS); from T1 to T6: increasing proportions of CC and decreasing of CC: 10/90; 20/80; 30/70; 40/60; 50/50 e 60/40%. The second had six treatments and six replicates, with increasing proportions of GP and decreasing proportions of CS: 0/100; 10/90; 20/80; 30/70; 40/60 and 50/50%.In the first trial we evaluated the number of leaves, root length, seedling height, stem diameter, shoot dry mass, root dry mass, total dry mass and Dickson Quality Index (DQI) at 59 days after sowing.The second trialwas performed at 12 and 18 DAS and we analyzed the number of leaves, plant height, root length, collar diameter, shoot dry mass, root dry mass, total dry mass and Dickson Quality Index (DQI). Variables that met the assumptions of normality and homoscedasticity were subjected to Dunnett’s test. The substrate composed of coffee chaff and organic compost has a high potential to be used as an alternative substrate due to promote better quality of papaya seedlings compared to the commercial substrate. Alternative substrate containing 60% coffee chaff and 40% organic compost is recommended for the production of  Formosa papaya seedlings in tubes. The grape pomace (GP) has a high potential to be used as component in substrate for the production of okra and zucchini seedlings compared to the commercial substrate (CS) only. Alternative substrate composed of 50% GP and 50% CS is recommended for the production of zucchini seedlings, while substrate composed of 10% GP and 90% CS is recommended for the production of okra seedlings.

scholarly journals Light intensity and type of container on producing Cassia grandis L. f. seedlings

2015 ◽  
Vol 19 (10) ◽  
pp. 939-945
Author(s):  
Caio C. P. Leal ◽  
Salvador B. Torres ◽  
Rômulo M. O. de Freitas ◽  
Narjara W. Nogueira ◽  
Raul M. de Farias
Keyword(s):  
Quality Index ◽  
Dry Mass ◽  
Wood Powder ◽  
Probability Level ◽  
Full Sunlight ◽  
Tukey Test ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Clay Pots ◽  
Dickson Quality Index

ABSTRACTThis study aimed to determine the effects of the luminosity and type of container on producing Cassia grandis seedlings. Thus, in a substrate composed by topsoil + wood powder (1:1) the seedlings were grown into plastic tubets containing 0.3 dm3 of such substrate, or into plastic pots containing 1.0 dm3 of the same substrate, and subjected to 50 and 25% shading or full sunlight. The assessments were performed every two weeks by measuring plant height and stem diameter, during eight weeks period. At the end of this period, the leaf area, dry mass of shoots and roots, the ratio between height of plant/diameter of stem, and the Dickson quality index were also assessed. The experiment was carried out in a completely randomized design with treatments arranged in a 3 x 2 factorial [3 luminosity levels (50, 25% shading and full sunlight) x 2 types of containers (plastic tubets and clay pots)] with four replicates of 10 seedlings each. Means were compared by Tukey test at 0.05 probability level and adjustments for the non-linear regression polynomial curves for the assessed characteristics were computed in function of time. Shadings of 25 and 50% were the best alternatives to luminosity; and the tubets were the most suitable containers for production of Cassia grandis seedlings.

scholarly journals Tolerance of precocious dwarf cashew clones to salt stress during rootstock formation stage

2020 ◽  
Vol 24 (7) ◽  
pp. 474-481
Author(s):  
Geovani S. de Lima ◽  
Jailson B. da Silva ◽  
Leandro de P. Souza ◽  
Reginaldo G. Nobre ◽  
Lauriane A. dos A. Soares ◽  
...  
Keyword(s):  
Quality Index ◽  
Relative Yield ◽  
Chlorophyll Synthesis ◽  
Dry Mass ◽  
Water Salinity ◽  
Chlorophyll B ◽  
Formation Stage ◽  
Salinity Levels ◽  
Chlorophyll A Content ◽  
Dickson Quality Index

ABSTRACT This study was conducted to evaluate the tolerance of precocious dwarf cashew clones to irrigation with waters of different salinity levels during rootstock formation. The experimental design consisted of randomized blocks, arranged in a 5 x 3 factorial scheme, corresponding to five levels of electrical conductivity of irrigation water (0.4; 1.2; 2.0; 2.8 and 3.6 dS m-1) and three clones of precocious dwarf cashew (Faga 11, Embrapa 51, CCP 76), with three replicates. Water salinity above 0.4 dS m-1 inhibited chlorophyll synthesis and growth, but led to cashew seedlings with the Dickson Quality Index (DQI) higher than the acceptable limit. Based on the relative yield of the total dry mass, the clones Faga 11, Embrapa 51 and CCP 76, at the highest salinity level studied, were classified as moderately sensitive, sensitive and moderately tolerant, respectively. There was interaction between water salinity and precocious dwarf cashew clones for chlorophyll a content, chlorophyll b content and DQI at 75 days after sowing.

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