scholarly journals Controlled-Release Fertiliser and Substrates on Seedling Growth and Quality in Agonandra brasiliensis in Roraima

2020 ◽  
Vol 8 (3) ◽  
pp. 70 ◽  
Author(s):  
Aline das Graças Souza ◽  
Oscar José Smiderle ◽  
Raiovane Araújo Montenegro ◽  
Thiago Komuro Moriyama ◽  
Thiago Jardelino Dias
Keyword(s):  
Controlled Release ◽  
High Standard ◽  
Dry Weight ◽  
Organic Substrate ◽  
Shoot Height ◽  
Shoot Dry Weight ◽  
Slow Development ◽  
Collar Diameter ◽  
Total Dry Weight

The aim of this study was to verify the effect of different substrates, in the presence and absence of controlled-release fertiliser, on the growth and morphological quality of seedlings of Agonandra brasiliensis Miers ex Benth. & Hook.f., in the state of Roraima, Brazil. The experimental design was a 2 * 5 factorial scheme, with and without the addition of 1.0 g L-1 NPK 18-05-09 formulation controlled-release encapsulated fertiliser (Forth CoteR) and five substrates. The following were evaluated: shoot height (H), collar diameter (CD), increase in shoot length (IncH) and collar diameter (IncCD), shoot dry weight (SDW), root dry weight (RDW), total dry weight (TDW) and Dickson quality index (DQI). The use of NPK 18-05-09 formulation controlled-release fertiliser (Forth CoteR) in a medium-sand substrate is recommended for obtaining plants of Agonandra brasiliensis of greater robustness, balance of biomass distribution, and a high standard of quality. In the substrate composed of soil from the cerrado + carbonised rice husks - CRH + organic substrate (2:1:1), the addition of NPK 18-05-09 formulation Forth CoteR is not necessary to obtain Agonandra brasiliensis plants of good morphological quality. Substrate 3, composed of soil + CRH (3:1), with or without the addition of NPK 18-05-09 formulation Forth CoteR, is not recommended for producing plants of Agonandra brasiliensis, due to the slow development and reduced morphological quality of the plants.

scholarly journals Use of Species-specific Controlled-release Fertilizer Rates to Manage Growth and Quality of Container Nursery Crops

2015 ◽  
Vol 25 (3) ◽  
pp. 370-379 ◽  
Author(s):  
Mary Jane Clark ◽  
Youbin Zheng
Keyword(s):  
Controlled Release ◽  
Growth Index ◽  
Dry Weight ◽  
Temperate Climate ◽  
Controlled Release Fertilizer ◽  
Shoot Dry Weight ◽  
Application Rates ◽  
Nursery Crops ◽  
Species Specific

The objective of this study was to determine the optimal controlled-release fertilizer (CRF) application rates or ranges for the production of five 2-gal nursery crops. Plants were evaluated following fertilization with 19N–2.6P–10.8K plus minors, 8–9 month CRF incorporated at 0.15, 0.45, 0.75, 1.05, 1.35, and 1.65 kg·m−3 nitrogen (N). The five crops tested were bigleaf hydrangea (Hydrangea macrophylla), ‘Green Velvet’ boxwood (Buxus ×), ‘Magic Carpet’ spirea (Spiraea japonica), ‘Palace Purple’ coral bells (Heuchera micrantha), and rose of sharon (Hibiscus syriacus). Most plant growth characteristics (i.e., growth index, plant height, leaf area, and shoot dry weight) were greater in high vs. low CRF treatments at the final harvest. Low CRF rates negatively impacted overall appearance and marketability. The species-specific CRF range recommendations were 1.05 to 1.35 kg·m−3 N for rose of sharon, 0.75 to 1.05 kg·m−3 N for ‘Magic Carpet’ spirea, and 0.75 to 1.35 kg·m−3 N for bigleaf hydrangea and ‘Green Velvet’ boxwood, whereas the recommended CRF rate for ‘Palace Purple’ coral bells was 0.75 kg·m−3 N. Overall, species-specific CRF application rates can be used to manage growth and quality of containerized nursery crops during production in a temperate climate.

scholarly journals NUTRITION IN THE PRODUCTION AND QUALITY OF SEEDLINGS OF THE BRAZIL NUT (Bertholletia excelsa H.B.K.) IN NORTHERN BRAZIL

2019 ◽  
Vol 9 (3) ◽  
Author(s):  
Aline das Graças Souza ◽  
Oscar josé Smiderle
Keyword(s):  
Nutrient Solution ◽  
Dry Weight ◽  
Production Costs ◽  
Brazil Nut ◽  
Bertholletia Excelsa ◽  
Shoot Dry Weight ◽  
Northern Brazil ◽  
Total Dry Weight ◽  
Shoot Weight

The Brazil nut (Bertholletia excelsa H.B.K.) is fast-growing, and can be used in reforestation. However, the use of the species in reforestation is still uncommon, mainly due to production costs, with substrate and fertiliser being the most-costly components. Based on the above, the aim of this study was to evaluate growth and quality in seedlings of the Brazil nut both with and without nutrient solution. The experimental design was completely randomised in a 2 x 10 factorial scheme: treatments with and without the addition of nutrient solution and 10 evaluations at intervals of 45 days. The variables to be analysed were height, stem diameter, dry shoot weight, root dry weight, total dry weight and the Dickson quality index. When analysing shoot dry weight (SDW), a gain of 85% was found from adding the nutrient solution, compared to the absence of nutrient solution, whereas for the variable, root-system dry weight, (RDW) the gain was 43%. The addition of nutrient solution is suggested for accelerating the growth and development of high-quality seedlings of Bertholletia excelsa for commercial use.

scholarly journals Response of Sophora secundiflora to Nitrogen Form and Rate

HortScience ◽  
2011 ◽  
Vol 46 (9) ◽  
pp. 1303-1307 ◽  
Author(s):  
Genhua Niu ◽  
Denise Rodriguez ◽  
Mengmeng Gu
Keyword(s):  
Dry Weight ◽  
Nitrogen Form ◽  
Shoot Height ◽  
Root Dry Weight ◽  
Shoot Dry Weight ◽  
Shoot Ratio ◽  
Significant Difference ◽  
Root To Shoot Ratio ◽  
Total Dry Weight ◽  
Mountain Laurel

Texas mountain laurel (Sophora secundiflora) is a native shrub tolerating drought, heat, windy conditions, and alkaline or wet soils. However, its availability is somewhat low and little information is available on nutrient requirement and other culture information. Two greenhouse experiments were conducted to quantify the responses of Texas mountain laurel to different forms and rates of nitrogen (N) fertilizer. In Expt. 1, 1-year old seedlings were treated for 194 days with three NO3:NH4 ratios at 25:75, 50:50, and 75:25 and two rates of N at 100 and 200 mg·L−1 in a factorial design. There was no interaction between the N rate and form on any growth parameters. Nitrogen form did not significantly affect shoot dry weight, root dry weight, root–to-shoot ratio, or the total dry weight. There was no significant difference between N rate of 100 and 200 mg·L−1 on root dry weight, root-to-shoot ratio, or the total dry weight. The shoot dry weight of Texas mountain laurel fertilized with 100 mg·L−1 was higher compared with that of the plants fertilized at 200 mg·L−1. The reduced shoot dry weight at N of 200 mg·L−1 was the result of the higher substrate salinity. In Expt. 2, seedlings were fertilized with five N rates (50, 100, 150, 200, and 250 mg·L−1) for 203 days. Plants watered with 150, 200, and 250 mg·L−1 were taller than those fertilized with 50 mg·L−1. The shoot height of plants watered with 100 mg·L−1 was only significantly different from 50 mg·L−1. For rapid growth of Texas mountain laurel, a N rate range of ≈150 mg·L−1 was recommended supplied with a combination of NO3-N and NH4-N in the ratios of 0.3 to 3.0.

Morphological attributes of oriental spruce [ Picea orientalis (L.) Link.] seedlings grown in peat-based media amended with natural zeolite

2007 ◽  
Vol 55 (3) ◽  
pp. 363-373
Author(s):  
S. Ayan ◽  
F. Tilki
Keyword(s):  
Natural Zeolite ◽  
Dry Weight ◽  
Growth Media ◽  
Shoot Height ◽  
Morphological Attributes ◽  
Shoot Dry Weight ◽  
Medium Components ◽  
Collar Diameter ◽  
Root Collar ◽  
Oriental Spruce

This study was designed to investigate the influence of growth media consisting of different components on the morphological attributes of oriental spruce seedlings. Eighteen different combinations of Barma peat (BP), tea residue compost (CTR), fine pumice (FP), coarse pumice (CP), perlite (P) and zeolite (Z) were prepared as growth media.The growth medium components did not significantly affect the shoot height (SH), root collar diameter (RCD), shoot:root ratio or dry root percentage (DRP) of 2-year-old seedlings. However, the root dry weight (RDW) and shoot dry weight (SDW) showed significant differences between the different growth media. The maximum SDW (3.244 g) was determined for a mixture of BP (0.5) + CTR (0.2) + CP (0.2) + Z (0.1), while a mixture of BP (0.6) + P (0.2) + Z (0.2) resulted in minimum SDW (1.593 g). In addition, the maximum RDW (1.824 g) was determined for the BP (0.5) + CTR (0.2) + CP (0.2) + Z (0.1) medium, while the BP (0.6) + CP (0.2) + Z (0.2) medium resulted in the lowest RDW (1.013 g). The addition of zeolite to the growth media increased the SDW and RDW of oriental spruce seedlings, so natural zeolite could be used as a substrate to replace pumice and perlite in nurseries in Turkey. Since Turkey has 45.8 billion tonnes of zeolite, its use in nurseries could reduce the costs significantly.

scholarly journals Seedling growth of Schizolobium parahyba on different substrates and irrigation levels

Rodriguésia ◽  
2011 ◽  
Vol 62 (3) ◽  
pp. 467-475
Author(s):  
Débora Zumkeller Sabonaro ◽  
João Antonio Galbiatti
Keyword(s):  
Seedling Growth ◽  
Dry Weight ◽  
Urban Waste ◽  
Irrigation Level ◽  
Agricultural Engineering ◽  
Shoot Dry Weight ◽  
Schizolobium Parahyba ◽  
Collar Diameter ◽  
Total Dry Weight ◽  
Irrigation Levels

Abstract The present study aimed to assess the behavior of seedlings of Schizolobium parahyba (Vell.) Blake growing on different substrates and irrigation levels, and to study the use of urban waste compost in substrates. The experiment was carried out in the College of Agricultural Sciences, Universidade Estadual Paulista (UNESP), Department of Agricultural Engineering, Jaboticabal Campus, state of São Paulo, Brazil. The experimental design used was completely randomized, consisting of 30 treatments in a factorial design with 15 substrates and two irrigation levels in four replicates. The substrates were composed of different materials: urban waste, Plantmax(r), dry cattle manure, vermiculite and soil. For the study of seedling growth, the following characteristics were evaluated: height (H), root-collar diameter (D), number of leaves, shoot dry weight, root dry weight, total dry weight, H/D ratio, Dickson's quality index, and the ratio between height and shoot dry weight (H/SDW). Assessments of the first three characteristics were carried out 20, 35, 50 and 65 days after sowing. Results showed that urban waste compost increased the growth of Schizolobium parahyba. There were significant differences for the irrigation levels tested; with better results for 150% ET compared to 100% ET irrigation level.

scholarly journals Growth of Copaifera Langsdorffii seedlings in different conditions on the substrate

2020 ◽  
Vol 13 (11) ◽  
pp. 20
Author(s):  
T. Woiciechowski ◽  
M. F. S. Pinheiro ◽  
L. J. B. Silvino
Keyword(s):  
Controlled Release ◽  
Dry Weight ◽  
Dry Mass ◽  
Native Forest ◽  
Scale Production ◽  
Shoot Height ◽  
Shoot Dry Weight ◽  
Copaifera Langsdorffii ◽  
Neck Diameter ◽  
Quality Indexes

The demand for seedlings of native forest species for reforestation helps in favor of the need for scale production, since technical techniques for producing native seedlings with quality are incipient, especially when it comes to silvicultural methods such as irrigation, fertilization and substrate preparation. The objective of the work was to evaluate the development of Copaifera langsdorffii Desf. seedlings, under different conditions in the substrate. The treatments were: control, commercial substrate; adding hydrogel to the substrate; use of controlled release fertilization; and addition of hydrogel and use of controlled release fertilization. After 150 days after sowing, the biometric characteristics of shoot height, neck diameter, root length, shoot dry weight, root and total, and quality indexes were measured. Individually, controlled fertilization provided greater height of the aerial part, diameter of the neck and quality indexes, however it was similar to the control in some cases. The addition of hydrogel together with controlled fertilization increased the total dry mass of the seedlings. In general, the addition of hydrogel to the commercial substrate showed unsatisfactory results in the development of Copaíba seedlings.

scholarly journals EFEITOS DO MANEJO HÍDRICO E DA APLICAÇÃO DE POTÁSSIO NAS CARACTERÍSTICAS MORFOFISIOLÓGICAS DE MUDAS DE Eucalyptus Grandis W. (Hill ex. Maiden)

Irriga ◽  
2004 ◽  
Vol 9 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Magali Ribeiro da Silva ◽  
Antonio Evaldo Klar ◽  
José Raimundo Passos
Keyword(s):  
Water Management ◽  
Water Stress ◽  
Eucalyptus Grandis ◽  
Morphological Characteristics ◽  
Dry Weight ◽  
Root Weight ◽  
Shoot Height ◽  
Chlorophyll Contents ◽  
Total Dry Weight

EFEITOS DO MANEJO HÍDRICO E DA APLICAÇÃO DE POTÁSSIO NAS CARACTERÍSTICAS MORFOFISIOLÓGICAS DE MUDAS DE Eucalyptus Grandis W. (Hill ex. Maiden)   Magali Ribeiro da Silva1; Antonio Evaldo Klar2; José Raimundo Passos31Departamento de Recursos Naturais, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista, Botucatu, [email protected] de Engenharia Rural, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista, Botucatu3Departamento de Bioestatística, Instituto de Biociências,  Universidade Estadual Paulista, Botucatu, SP   1 RESUMO  O trabalho teve por objetivo avaliar os efeitos do manejo hídrico e da adubação potássica realizados durante a fase de rustificação, na qualidade de mudas de Eucalyptus grandis. O experimento foi conduzido na Faculdade de Ciências Agronômicas da UNESP – Botucatu, e constituiu-se de um fatorial 2X4, sendo dois manejos hídricos (mudas irrigadas ao atingir as tensões de retenção de água pelo substrato de 0,01 MPa ou 1,5 MPa) e quatro doses de K (0, 75, 150 e 300 mg L-1). Foram feitas avaliações de: altura da parte aérea, diâmetro de colo, matéria seca da parte aérea e da radicular, matéria seca total, área foliar, relação altura da parte aérea / diâmetro de colo das mudas, teor de clorofila e taxa de transpiração. Os resultados morfológicos indicaram que somente a matéria seca radicular (MSR) diferiu estatisticamente em função do K aplicado. O estresse hídrico não teve efeito nas características morfológicas. Com relação às características fisiológicas, observou-se que os maiores teores de clorofila foram encontrados nas mudas submetidas ao maior estresse hídrico e maiores doses de K. As maiores taxas de transpiração foram observadas nas mudas dos tratamentos submetidos ao estresse hídrico mínimo. Não houve variação significativa entre as doses de K sobre a transpiração.  UNITERMOS: Eucalyptus, rustificação, qualidade de mudas, viveiro, fertilização.    SILVA, M. R. da; KLAR, A. E.; PASSOS, J. R. EFFECTS OF WATER MANAGEMENT AND POTASSIUM APPLICATION ON THE MORPHOPHYSIOLOGICAL CHARACTERISTICS OF SEEDLINGS OF Eucalyptus grandis  W. (Hill ex. Maiden)  2 ABSTRACTS  The objective of this study was to evaluate the effect of water management and potassium fertilizing applied during the hardening phase on the quality of Eucalyptus grandis seedlings. The experiment was conducted at the School of Agronomical Sciences of UNESP, Botucatu, and consisted of a factorial design 2X4; two water managements (seedlings irrigated when reaching water retention tensions by the substrate) and four doses of K (0, 75, 150 and 300 mg L-1). The following evaluations were made: shoot height, stalk diameter, shoot and root dry weight, total dry weight, leaf area, relation between seedling lap shoot height and diameter, transpiration rate and chlorophyll content. Morphological results showed that only the dry root weight differed statistically due to the K applied. The water management had no effect on the morphological characteristics. As to the physiological characteristics it was observed that the highest the chlorophyll contents were found in seedlings that had undergone the greatest water stress and K doses. The highest transpiration rates were observed in the seedlings of the treatments undergoing minimum water stress. The K levels did not influence transpiration statistically.  KEYWORDS: Eucalyptus, hardening, quality of seedlings, nursery, fertilization

scholarly journals Shading of stock plants and the use of auxin in red pitaya cuttings

2016 ◽  
Vol 37 (5) ◽  
pp. 2977
Author(s):  
Edmilson Igor Bernardo Almeida ◽  
Ronialison Fernandes Queiroz ◽  
João Paulo Cajazeira ◽  
Iana Maria de Souza Oliveira ◽  
Márcio Cleber de Medeiros Corrêa
Keyword(s):  
Production Systems ◽  
Dry Weight ◽  
Dry Mass ◽  
Plant Production ◽  
Axillary Shoots ◽  
Shoot Dry Weight ◽  
Parental Stock ◽  
Scientific Expertise ◽  
Total Dry Weight

Although there has been a significant expansion of red pitaya cultivation in Brazil and other countries around the world, its cultivation requires scientific expertise to identify the plant production systems best suited to Brazilian soils and climate. Therefore, this study aimed to evaluate the effect of exogenous auxin and shading of the parental stock plants on the subsequent quality of red pitaya cuttings. The use of a commercial rooting auxin (with and without) and five shading levels on stock plants (full sun, 35, 50, 65 and 80% shading) were tested via four randomized blocks in a factorial 2x5 scheme with two plants per plot. After 90 days, the following vegetative characteristics were evaluated: length of the longest root (LR), root dry mass (RDM), root width (RW), shoot fresh weight (SFW) and shoot dry weight (SDW), total dry weight (TDW), number of axillary shoots (NAS), sum of the length of the axillary shoots (SLAS), and shoot:root ratio (SRR). We concluded that for the production of high quality plants, collecting cuttings from stock plants grown in full sun or 80% shade is recommended, eliminating the need to use commercial rooting auxin.

scholarly journals Wastewater from swine farming in the growth and nutrition of Khaya senegalensis (DESR.) A Juss seedlings

2019 ◽  
Vol 35 (5) ◽  
Author(s):  
Emanuel França Araújo ◽  
Adriana Miranda de Santana Arauco ◽  
Bruna Anair Souto Dias ◽  
Julian Júnio de Jesus Lacerda ◽  
Cácio Luiz Boechat ◽  
...  
Keyword(s):  
Dry Weight ◽  
Swine Farm ◽  
Shoot Height ◽  
African Mahogany ◽  
Shoot Dry Weight ◽  
Growth And Nutrition ◽  
Khaya Senegalensis ◽  
Number Of Leaves ◽  
Total Dry Weight ◽  
Nutritional Balance

This study evaluated the use of wastewater from swine farming in the growth and nutritional balance of Khaya senegalensis (Desr.) A. Juss. (African mahogany) seedlings. The experiment was setup in a shade house on the Professor Cinobelina Elvas Campus of the Federal University of Piauí, in Bom Jesus, in the State of Piauí, Brazil. The experimental design was completely randomised, with five concentrations of swine farm wastewater (SFW) (0, 25, 50, 75 and 100%) added to the irrigation water. The growth and nutritional balance of the seedlings were evaluated 100 days after sowing, by measuring shoot height (H), stem diameter (SD), number of leaves (NL), total chlorophyll (TC), leaf area (LA), shoot dry weight (SDW) and root dry weight (RDW), and by calculating the total dry weight (TDW), leaf (LBA), stem (SBA), and root (RBA) biomass allocation, Dickson Quality Index (DQI) and average Nutritional Balance Index (NBIm). It was found that K. senegalensis seedlings responded to the SFW, showing the best results for growth and nutritional balance at concentrations of around 50%.

scholarly journals Silvicultural Potential of Handroanthus heptaphyllus Under Doses of Controlled Release Fertilizer and Container Volume, in Nursery and in the Field

2018 ◽  
Vol 10 (11) ◽  
pp. 389
Author(s):  
Jessé C. Mezzomo ◽  
Maristela M. Araujo ◽  
Felipe Turchetto ◽  
Daniele G. Rorato ◽  
Adriana M. Griebeler ◽  
...  
Keyword(s):  
Controlled Release ◽  
Leaf Area ◽  
Dry Weight ◽  
Controlled Release Fertilizer ◽  
Shoot Dry Weight ◽  
Nutritional Conditions ◽  
Polyethylene Bags ◽  
Chlorophyll Index ◽  
Fluorescence Of Chlorophyll A ◽  
Total Dry Weight

The present study aimed to characterize the growth of Handroanthus heptaphyllus seedlings in a nursery, planted under different container volumes and doses of controlled release fertilizer (CRF), and to verify whether the responses obtained in the nursery are confirmed in the field. For the production of seedlings in the nursery, three volumes of container (180 and 280 cm3 polypropylene tubes and 500 cm3 polyethylene bags) and four CRF doses (0, 4, 8, and 12 g L-1 of substrate) were used. At 180 d after emergence, height (H), stem diameter (SD), H:SD ratio, shoot dry weight, root dry weight, total dry weight, Dickson Quality Index, leaf area, root length, and fluorescence of chlorophyll a were evaluated. The same treatments were evaluated again in the field 540 d after planting, and the survival, increase in H and SD, as well as shoot dry weight, leaf area, chlorophyll fluorescence, and chlorophyll index (a, b and total) were measured. In the nursery, seedlings of H. heptaphyllus responded positively to the volume of the container, as well as the base fertilization using CRF. However, when planted in the field, the plants that received the best nutritional conditions in the nursery showed good performance and was favored in the field. Thus, in the production of quality seedlings, the use of containers of the type polypropylene tubes with 180 cm3, and basic fertilization with 12 g L-1 of CRF conditions that enable growth of H. heptaphyllus in the field are recommended.

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