Recipientes e substratos na germinação e desenvolvimento de crisântemo e amor-perfeito

The aim of this work was to evaluate the substrate effect and recipient size on the germination and initial growth of chrysanthemum and perfect-love ornamental plants. The works was carried out in the Horticulture Nursery from UTFPR - Campus Dois Vizinhos - Paraná State, Brazil. The experimental design was in blocks randomized, in factorial 3 x 4 (recipient size x substrate), with four replications, considering 4 recipients by plot. It was used as recipients, small, medium and king container and as substrate the Plantmax® and the mixture Red Latosoil + Sand + Poultry Litter 1 (1:1:1 v/v), Red Latosoil + Sand + Poultry Litter 2 (1:1:1 v/v) and Red Latosoil + Sand + Poultry Litter 1 + Poultry Litter 2 (1:1:1:1 v/v). The Poultry Litter 1 and 2 had wood shavings and sawdust as different ingredients, respectively. The germination (%), total lenght plants(cm), roots length(cm), height(cm), leaf number and plants dry mass matter(g), were evaluate 63 days after experiment installation. For germination and early development of perfect-love the best container was small with a mixture the red latosoil + sand + Poultry Litter 1 + Poultry Litter 2 (1:1:1:1 v/v). For Chrysanthemum, besides to this container and mixing, the mixtures were also important Red Latosoil + sand + Poultry Litter 1 (1:1:1 v/v) e Red Latosoil + sand + Poultry Litter 2 (1:1:1 v/v).

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Nutrient omission effect on growth and nutritional status of assai palm seedlings1

Pesquisa Agropecuária Tropical ◽

10.1590/1983-40632016v4640770 ◽

2016 ◽

Vol 46 (4) ◽

pp. 374-382 ◽

Cited By ~ 1

Author(s):

Fábio Reis Ribeiro Araújo ◽

◽

Ismael de Jesus Matos Viégas ◽

Raimundo Lázaro Moraes da Cunha ◽

Werica Larissa Farias de Vasconcelos ◽

...

Keyword(s):

Experimental Design ◽

Nutritional Status ◽

Dry Mass ◽

Natural Fertility ◽

Initial Growth ◽

Relative Growth ◽

Leaf Nutrients ◽

Leaf Dry Mass ◽

The Individual ◽

Cu And Zn

ABSTRACT The Amazonian assai palm has a great socioeconomic importance, but most of its commercial plantations take place in uplands and low natural fertility soils, what may hinder its development. This study aimed at evaluating the effect of nutrient omission on growth and nutritional status of assai palm seedlings (Ver-o-Peso cultivar). The experimental design was completely randomized, with 14 treatments and 5 replicates. The treatments consisted of complete fertilization with liming; no fertilization and no liming (control); complete fertilization with individual omission of N, P, K, Ca, Ca with no liming, Mg, Mg with no liming, S, B, Cu and Zn. Plant height, stem diameter and dry mass, leaf and total shoot dry mass, and leaf nutrients content and accumulation were evaluated. The initial growth of the assai palm plants was limited by the omission of P, N, K, Ca, Mg and Cu. The production of leaf dry mass was decreasingly affected by the omission of P > Cu > N > K > Mg, while leaf area was limited by the individual omissions of Ca > N > P > K > Mg > Zn. Plant development, measured by relative growth of shoots, was affected by lack of Ca > P > N > Mg > Cu > K, with an average reduction of 31 %. The nutrients most needed by the assai palm plants, as evidenced by nutrients contents and accumulation in the leaf dry mass, are: N > K > S > Ca > Mg > P > Mn > Zn > B > Cu.

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Herbicide Selectivity in Tropical Ornamental Species

Planta Daninha ◽

10.1590/s0100-83582016340400020 ◽

2016 ◽

Vol 34 (4) ◽

pp. 795-802 ◽

Cited By ~ 1

Author(s):

J.R.G. QUEIROZ ◽

A.C. SILVA JR. ◽

D. MARTINS

Keyword(s):

Experimental Design ◽

Ornamental Plants ◽

Dry Mass ◽

Visual Appearance ◽

Chlorimuron Ethyl ◽

Strelitzia Reginae ◽

Alpinia Purpurata ◽

Ornamental Species

ABSTRACT This study evaluated the selectivity of herbicides applied post-emergence on ornamental plants of Alpinia purpurata, Strelitzia reginae and Heliconia psittacorum. The study was conducted in two seasons. The experimental design was completely randomized with four replications. The treatments were: fluazifop-p-butyl (87.5 g ha-1), quizalofop-p-ethyl (75.0 g ha-1), sethoxydim (184.0 g ha-1), quinclorac (375.0 g ha-1), chlorimuron-ethyl (15.0 g ha-1), clethodim + fenoxaprop-p-ethyl (37.5 + 37.5 g ha-1), bentazon (720.0 g ha-1), fomesafen (225.0 g ha-1), and a control without any herbicide. In general, all tested herbicides and doses were selective for the three studied species. Although plants of A. purpurata and H. psittacorum have shown symptoms of phytotoxicity, recovery occurred with subsequent satisfactory visual appearance at the end of the evaluations. However, the S. reginae plants showed the smallest dry mass values when the sethoxydim and quizalofop-p-ethyl herbicides were sprayed.

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Effect of CO2 elevation and UV-A radiation on growth responses of Zinnia, Petunia, Coxcomb, and Marigold

Acta agriculturae Slovenica ◽

10.14720/aas.2017.109.2.11 ◽

2017 ◽

Vol 109 (2) ◽

pp. 281

Author(s):

Hamidreza Miri ◽

Maryam Sadeghi ◽

Abdolreza Jafari ◽

Mohammad Mehdi Rahimi

Keyword(s):

Uv Radiation ◽

Ornamental Plants ◽

Dry Mass ◽

Leaf Number ◽

Growth Responses ◽

Ecophysiological Traits ◽

Randomized Design ◽

Production And Distribution ◽

Peroxidase Enzymes ◽

Physiological Characters

In order to evaluate the effect of CO2 elevation and UV radiation on growth responses of zinnia, petunia, coxcomb, and marigold, a study was conducted in 2015 at Arsanjan Islamic Azad University, Iran. The experimental design was factorial arranged in completely randomized design with three replications. Treatments were included four ornamental species (zinnia, petunia, coxcomb, and marigold), CO2 concentration at two levels (350 and 700 ppm), and UV radiation at two levels (with and without UV radiation). Results showed that elevating of CO2 concentration from 350 ppm to 700 ppm increased morphological and physiological characters of C3 plants, especially marigold. Meanwhile, increasing CO2 concentration from 350 ppm to 700 ppm, decreased effects of UV damage on plants’ morphological and physiological characters. The highest leaf number, shoot dry mass, plant height and water use efficiency of C4 plant (coxcomb flower) were observed at 350 ppm of CO2 concentration without UV radiation while, the highest leaf number, shoot dry mass and leaf pigments of C3 plants (zinnia, petunia, and marigold flower) were obtained at 700 ppm of CO2 concentration without UV radiation. The results showed that the activity of catalase and peroxidase enzymes under UV radiation was increased in all of plants. Overall, it is concluded that, the recognition of plants resistant to UV radiation and high levels of CO2 concentration in the future may be better for environmental production and distribution as ornamental plants in town landscapes, where ecophysiological traits should be considered.

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Fertilizantes agrícolas aplicados via solução nutritiva em Cattleya labiata Lindl

Ornamental Horticulture ◽

10.14295/oh.v22i2.878 ◽

2016 ◽

Vol 22 (2) ◽

pp. 208 ◽

Cited By ~ 1

Author(s):

Rodrigo Thibes Hoshino ◽

Guilherme Augusto Cito Alves ◽

Renan Ribeiro Barzan ◽

Gustavo Adolfo de Freitas Fregonezi ◽

Ricardo Tadeu de Faria

Keyword(s):

Electrical Conductivity ◽

Experimental Design ◽

Potassium Chloride ◽

Nutrient Solution ◽

Dry Mass ◽

Commercial Production ◽

Experimental Unit ◽

Initial Growth ◽

Nutrient Solutions

Fertilization through nutrient solution is commonly used in commercial production of potted flowers, being employed soluble NPK formulations. However, most commercial formulations available in the market have high costs and the use of agricultural fertilizers can be an economically viable alternative. The objective of this study was to evaluate the effectiveness of agricultural fertilizers applied as nutrient solutions, in replacement of commercial formulations, on initial growth of Cattleya labiata. C. labiata seedlings in vitro propagated were grown in a greenhouse with controlled temperature, 27 ± 2° C, and retaining 50% brightness. Polypropylene pots were used with 0.415 L capacity, containing a mixture of pine bark and charcoal (1:1, v:v) as substrate. Altogether were used 4 treatments: without fertilization (control); Peters® - NPK 20 20 20 (3.0 g L -1 ); NPK - urea (1.3 g L -1 ), superphosphate (3.3 g L -1 ) and potassium chloride (1.0 g L -1 ); NK - urea (1.3 g L -1 ) and potassium chloride (1.0 g L -1 ). The nutrient solutions were applied 50 ml per pot every two weeks, according to the treatments. Were evaluated phytometric characteristics, pH and electrical conductivity of the substrate beyond the levels and accumulation of macronutrients. The experimental design was completely randomized with 12 replications, being considered each pot with two plants as an experimental unit. The parameters were submitted to ANOVA and Tukey’s test at 5% probability. Regarding phytometric parameters no significant differences were observed between the treatments that received fertilization, which are superior to the control in height and dry mass of shoots. The more accumulated nutrients were K>Ca>N, in the treatments that received fertilization. The use of urea, superphosphate and potassium chloride, applied in nutrientsolution, have potential to replace the commercial formulations in the initial growth of native orchid Cattleya labiata.

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Pre-germination treatments of Paricá (Schizolobium amazonicum) seeds

Bioscience Journal ◽

10.14393/bj-v36n4a2020-41791 ◽

2020 ◽

Vol 36 (4) ◽

Author(s):

Estefânia Martins Bardiviesso ◽

Thiago Barbosa Batista ◽

Flávio Ferreira da Silva Binotti ◽

Edilson Costa ◽

Tiago Alexandre da Silva ◽

...

Keyword(s):

Electrical Conductivity ◽

Experimental Design ◽

Seed Germination ◽

Seed Coat ◽

Dry Mass ◽

Control Group ◽

Initial Growth ◽

Seedling Length ◽

Collar Diameter ◽

Control Water

Paricá seeds have dormancy and, even after mechanical scarification, these seeds show slow and uneven germination. Pre-germination treatments can be used to increase seed germination performance. Thus, the aimed to evaluate the physiological potential and initial growth of paricá seeds after pre-germination treatments, using different substances as plant regulators and nutrients, in addition to mechanical scarification. The experimental design was completely randomized, in a 2x7 factorial scheme, consisting of the following pre-germination treatments: mechanical scarification (10% and 50% of the seed coat) and seed pre-soaking [control-water, KNO3 0.2%, Ca(NO3)2 0.2%, gibberellin 0.02%, cytokinin 0.02%, and mixture of gibberellin + cytokinin (1:1)] besides a control group without pre-soaking, with four replicates. The study evaluated germination and emergence rates, germination and emergence speed indices, collar diameter, plant height, seedling dry mass, hypocotyl and seedling length, and electrical conductivity. It was observed that pre-soaking the seeds in gibberellin after mechanical scarification at 50% as a pre-germination treatment resulted in seeds with higher vigor expression and greater initial seedling growth.

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Raw and Fermented Alfalfa Brown Juice Induces Changes in the Germination and Development of French Marigold (Tagetes patula L.) Plants

Plants ◽

10.3390/plants10061076 ◽

2021 ◽

Vol 10 (6) ◽

pp. 1076

Author(s):

Döme Barna ◽

Szilvia Kisvarga ◽

Szilvia Kovács ◽

Gábor Csatári ◽

Ibolya O. Tóth ◽

...

Keyword(s):

Seed Germination ◽

Tap Water ◽

Germination Rate ◽

Ornamental Plants ◽

Dry Mass ◽

Water Soluble ◽

Tagetes Patula ◽

Root And Shoot Length ◽

Horticultural Practice ◽

Brown Juice

Organic and ecological farming programs require new and efficient biostimulants with beneficial properties for the sustainable and safe production of seedlings and ornamental plants. We examined the effect of non-fermented and lacto-fermented alfalfa brown juice (BJ) on seed germination and the vegetative, physiological, and anatomical properties of French marigold (Tagetes patula L. ‘Csemő’) plants which were treated with 0.5–10% fermented and non-fermented BJ, with tap water applied as a control. Applying 0.5% fermented BJ significantly improved seed germination compared with non-fermented BJ, resulting in an increase of 9.6, 11.2, 10.9, and 41.7% in the final germination percent, germination rate index, germination index, and vigor index, respectively. In addition, it increased the root and shoot length by 7.9 and 16.1%, respectively, root and shoot dry mass by 20 and 47.6%, respectively, and the number of leaves by 28.8% compared to the control. Furthermore, an increase in contents of water-soluble phenol, chlorophyll a and b, and carotenoid was reported upon the application of 0.5% fermented BJ, while peroxidase activity decreased. Our results prove that alfalfa BJ can be enrolled as a biostimulant as part of the circular farming approach which supports the sustainable horticultural practice.

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Growth analysis of Fafia in relation to the propagation method used

Horticultura Brasileira ◽

10.1590/s0102-05362008000300016 ◽

2008 ◽

Vol 26 (3) ◽

pp. 375-378 ◽

Cited By ~ 1

Author(s):

André May ◽

Odair A Bovi ◽

Nilson B Maia ◽

Andrea RA de Moraes ◽

Mariane Q Pinheiro

Keyword(s):

Experimental Design ◽

Aerial Part ◽

Growth Analysis ◽

Experimental Period ◽

Dry Mass ◽

Plant Propagation ◽

Pfaffia Glomerata ◽

Accumulation Curves ◽

Propagation Methods ◽

Mass Accumulation

A trial was carried out in Campinas, Brazil, from August 2005 to August 2006, in order to analyze the effect of two propagation methods (seeds and cuttings) on the development of Pfaffia glomerata (Spreng.) Pedersen. The experimental design was a completely randomized block, with five replications, and two methods of plant propagation. Plant height, aerial part dry mass and root dry mass were evaluated. Plants propagated from cuttings showed greater accumulation of dry mass on the aerial part. Root dry mass accumulation curves showed an exponential pattern, and at the end of the experimental period, the average of roots dry mass for both treatments were similar, up to 349,65 g plant-1.

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Nutritional deficiency symptoms of young ‘cedro doce’ plants grown under macronutrient omission

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v23n4p264-270 ◽

2019 ◽

Vol 23 (4) ◽

pp. 264-270

Author(s):

Simone T. M. de Aquino ◽

Reila F. dos Santos ◽

Karine D. Batista

Keyword(s):

Chlorophyll A ◽

Block Design ◽

Complete Solution ◽

Dry Mass ◽

Nutritional Deficiency ◽

Native Forest ◽

Initial Growth ◽

Deficiency Symptoms ◽

Root Shoot Ratio ◽

Index Ratio

ABSTRACT ‘Cedro doce’ [Pochota fendleri (Seem) Alverson & Duarte] is a native forest species in Amazon with great ecological and economic importance. Understanding nutritional requirements of the species allows cultivating Pochota fendleri with more efficient fertilization practices since its initial growth, as a seedling. Thus, this research aimed to evaluate the symptoms of nutritional deficiency of young ‘cedro doce’ plants. The experiment was carried out from September to December 2016, under greenhouse conditions, at Embrapa Roraima, in Boa Vista, RR, Brazil. The experiment was a randomized complete block design with seven treatments [complete solution and individual omission of the macronutrients (N, -P, -K, -Ca, -Mg, -S)] and three replications. Each experimental plot corresponded to a pot with one plant, corresponding to 21 plots. At 77 days after transplanting the seedlings to the pots, the plants were evaluated for symptoms of nutritional deficiency: total height, collar diameter, leaf number, chlorophyll a and b, chlorophyll a/b index ratio, shoot and root dry mass, and root/shoot ratio. The macronutrients omission caused nutritional deficiency symptoms in all ‘cedro doce’ plants. In general, P and N omission caused the least development of plants. This result is an indicative that ‘cedro doce’ is a high demanding species for both nutrients, especially phosphorus.

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Development of experimental structure and influence of high CO2 concentration in maize cro

Engenharia Agrícola ◽

10.1590/s0100-69162012000200010 ◽

2012 ◽

Vol 32 (2) ◽

pp. 306-314 ◽

Cited By ~ 4

Author(s):

João B. Lopes da Silva ◽

Paulo A. Ferreira ◽

Eduardo G. Pereira ◽

Luís C. Costa ◽

Glauco V. Miranda

Keyword(s):

Experimental Design ◽

Dry Matter ◽

Co2 Concentration ◽

Dry Mass ◽

C4 Plant ◽

Active Radiation ◽

High Co2 ◽

Photosynthetic Rates ◽

High Co2 Concentration ◽

Experimental Structure

Maize is a C4 plant that shows few or no response to high [CO2]. Thus, this study aimed to analyze the photosynthetic rate and yield of maize under high [CO2] and develop open-top chambers (OTC) to create an atmosphere enriched with CO2. The experiment was conducted between October 2008 and March 2009. The OTCs were developed in modular scheme. Measurement of photosynthetic rates, transpiration, stomata conductance, grain yield and dry matter were performed. The experimental design was randomized blocks with four replications and three treatments: P1 - plants grown in OTC with 700 ppm [CO2], P2 - plants grown in OTC with environmental [CO2], and P3 - control, cultivated in open field. The results were analyzed by ANOVA and Tukey's test (Pr< 0.05). The chambers can reduce by 25% the photosynthetically active radiation and increase the air and leaf temperatures. Plants under high [CO2] (P1) showed the highest photosynthetic rates and the lowest stomata conductance and transpiration. The total weight of grains (g) and dry mass of shoots (g) showed no increases for P1, despite their higher photosynthetic rates.

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Production of Pityrocarpa moniliformis (Benth.) Luckow & R.W. Jobson (Fabaceae) seedlings irrigated with saline water

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v25n3p182-188 ◽

2021 ◽

Vol 25 (3) ◽

pp. 182-188

Author(s):

Adriana dos S. Ferreira ◽

Caio C. P. Leal ◽

Bruno da S. Guirra ◽

Salvador B. Torres ◽

Marco Porceddu ◽

...

Keyword(s):

Electrical Conductivity ◽

Irrigation Water ◽

Saline Water ◽

Block Design ◽

Soluble Sugars ◽

Dry Mass ◽

Initial Growth ◽

Saline Irrigation ◽

Total Soluble Sugars ◽

Chlorophylls A And B

ABSTRACT Saline irrigation water at high levels causes disturbance in the growth of more sensitive plants. The objective of this research was to evaluate the initial growth of Pityrocarpa moniliformis seedlings under different electrical conductivity in irrigation water through physiological and biochemical analyses. The experiment was conducted in a greenhouse with five water electrical conductivities (0.5, 2.0, 4.0, 6.0 and 8.0 dS m-1) and four repetitions of 20 plants each, arranged in a randomized block design. Application of the treatments with irrigation water containing NaCl began at 30 days after sowing. To determine the behaviour of the species, the following variables were analysed: stem diameter, plant height, number of leaves, leaf area, Dickson quality index, shoot dry mass, root dry mass and total dry mass, as well as the biochemical variables, such as the concentrations of total soluble sugars, free proline and chlorophylls a and b. The increase in irrigation water salinity hampered the growth of P. moniliformis seedlings, with electrical conductivity of 0.5 dS m-1 being the limit for maximum production. The results also indicated that the deleterious effects of salt stress on P. moniliformis seedlings variables increase in concentrations of proline, total soluble sugars and betaine glycine.

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