scholarly journals Açai seedling production: effect of substrates and seeds size on germination and growth of seedlings

2015 ◽  
Vol 4 (1) ◽  
pp. 316-323 ◽  
Author(s):  
Oscar J. Smiderle ◽  
Vanuza Xavier Silva ◽  
Edvan Alves Chagas ◽  
Aline G. Souza ◽  
Maria Isabel Garcia Ribeiro ◽  
...  
Keyword(s):  
Dry Weight ◽  
Germination Percentage ◽  
Second Step ◽  
Initial Growth ◽  
Euterpe Oleracea ◽  
Shoot Height ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Forced Air ◽  
Growth Of Seedlings

The açaí palm (Euterpe oleracea Mart.) is a tree native to the Amazonia. In some states in the region, growth of the planted area has been observed, but the difficulty in obtaining substrates which are viable for the production of seedlings is high. It was intended in a first step to evaluate the effect of seed size and substrates upon germination and in the second step, to evaluate the initial growth of seedlings of E. oleracea on different substrates. The experimental design was a completely randomized design in 2 x 2 factorial scheme with four replications at 100 seeds. Germination percentage, percentage of abnormal seedlings, shoot and root length and dry weight of the seedlings were evaluated after 70 days. In the second step, completely randomized design in 9 x 6 factorial scheme with five replications with four seedlings/ plot was utilized. At 60, 90 , 120 , 150 , 180 and 210 days after transplanting, shoot height and diameter of the stem of the plant were assessed, number of leaves were determinate at 90, 120 , 150, 180 and 210 dat and at 210 dat, determinations of dry weight of the shoot and root system were conducted. These samples were put in an oven with forced air circulation at 60 ºC for 72 hours. Açaí seeds considered large present greater germination percent as compared with small seeds and the substrate sand provides greater percentage of seed germination. The substrates composed of 75% (soil+sand) + 25% manure and with 75% (soil+sand) + 25% carbonized rice husk present better development of açai seedlings.

scholarly journals PRODUÇÃO DE MUDAS DE Physocalymma scaberrimum EM SUBSTRATOS COMPOSTOS POR DIFERENTES PORCENTAGENS DE RESÍDUO ORGÂNICO DE AÇAÍ

FLORESTA ◽  
2012 ◽  
Vol 42 (2) ◽  
pp. 399 ◽  
Author(s):  
Álisson Sobrinho Maranho ◽  
Ary Vieira de Paiva
Keyword(s):  
Native Species ◽  
Urban Forestry ◽  
Dry Weight ◽  
Dry Mass ◽  
Native Forest ◽  
Shoot Height ◽  
The North ◽  
Randomized Design ◽  
Collar Diameter ◽  
Growth Of Seedlings

Physocalymma scaberrimum Pohl é uma espécie nativa que ocorre principalmente no Norte e Centro-Oeste do Brasil, com potencial madeireiro, para arborização urbana e para recomposição de vegetação em áreas degradadas. Considerando a necessidade de conhecimento do seu comportamento em viveiro e da utilização de resíduos agroflorestais como componente de substrato, este estudo teve por objetivo avaliar o crescimento de mudas dessa espécie em substratos compostos por porcentagens de resíduo de açaí (0%, 25%, 50%, 75%, 100%) misturado à terra de mata. O experimento ocorreu em delineamento inteiramente casualizado, com 5 tratamentos (substratos) e 20 repetições. Foi avaliado o crescimento das mudas através da altura, diâmetro do colo, massa seca da parte aérea e radicular e total, e Índice de Qualidade de Dickson (IQD). Houve ajuste de regressão linear e correlação positiva entre altura, diâmetro do colo e massa seca total com as porcentagens de resíduo de açaí. O substrato constituído por 100% do resíduo de açaí proporcionou o maior crescimento das mudas: 32,9 cm de altura, 2,98 mm de diâmetro do colo, 2,003 g de massa seca total e maior IQD (0,1142). Para a utilização com terra de mata, a composição entre 25% e 75% de resíduo também se mostrou possível.Palavras-chave: Resíduos agroflorestais; produção de mudas; espécies florestais nativas; silvicultura. AbstractPhysocalymma scaberrimum seedlings production in substrate composed by different percentages of organic residue of açaí. Physocalymma scaberrimum Pohl is a native species that occurs mainly in the North and Midwest regions of Brazil, with potential for wood production, urban forestry and restoration of vegetation in degraded areas. Considering the need for better understanding of the seedlings behavior in the nursery, and use of agroforestry residue as components of substrate, this study aimed to evaluate the growth of this species in substrates composed by different percentages of açaí residue (0%, 25%, 50%, 75%, 100%) mixed with forest soil. The experiment was set up according to the completely randomized design, with 5 treatments (substrates) and 20 replicates. It was evaluated the growth of seedlings through shoot height, collar diameter, dry weights of shoot and roots and total, and Dickson Quality Index (IQD). A fit linear regression and positive correlation was found out between height, collar diameter and dry weight total dry mass with increasing percentages of açaí residue. The substrate composed by 100% of açaí residue provided the highest mean growth of seedlings: height (32.9 cm seedling-1), collar diameter (2.98 mm seedling-1), total dry mass (2.003 g seedling-1), and highest IQD (0.1142). To use with soil, the composition between 25% and 75% of residue also showed possibility.Keywords:agroforestry residues; seedlings production; native forest species; silviculture.

scholarly journals Physiological quality of parsley seeds in function of size

2021 ◽  
Vol 42 (3Supl1) ◽  
pp. 1499-1510
Author(s):  
Renato Téo de Barros ◽  
◽  
Cibele Chalita Martins ◽  
Tatiane Sanches Jeromini ◽  
Givanildo Zildo da Silva ◽  
...  
Keyword(s):  
Seed Size ◽  
Dry Weight ◽  
Germination Percentage ◽  
Randomized Design ◽  
Physiological Quality ◽  
Completely Randomized Design ◽  
Germination Vigor ◽  
Selection Of

Parsley seeds are commercialized without classification by size during processing, unlike other crops. This classification procedure allows the standardization of seed size for high precision in sowing, disposal of unwanted material, and selection of high quality seeds. The aim of this study was to verify the effect of seed size on germination, vigor, and yield performance of two parsley cultivars. Seeds from eight lots of parsley of ‘Portuguesa’ and ‘Chacareira’ cultivar were separated into three size classes, represented by the seeds retained in the sieves of 0.84, 1.00 and 1.41mm mesh opening. After classification, seeds were evaluated in the laboratory for water content, germination percentage, first count, and thousand seed weight. In the field, the fresh and dry weight of aerial part and the final number of plants (stand) were evaluated after 78 days of sowing. The experimental design was the completely randomized design in an 8 x 3 factorial scheme (eight lots and three sieve opening) with four replicates, for both cultivars. Data obtained were subjected to analysis of variance and means were compared using Tukey test at 5% probability level. It was concluded that the parsley seeds separated by the 1.41 mm sieves showed higher vigor, and consequently, greater success in stand establishment at the field than those separated by other sieve size. The use of sieves in the classification of parsley seeds helps in obtaining lots with superior physiological quality.

scholarly journals Respon Pertumbuhan Stek Anggur (Vitis vinifera L.) terhadap Pemberian Beberapa Konsentrasi Ekstrak Bawang Merah (Allium ascalonicum L.)

Akta Agrosia ◽  
2016 ◽  
Vol 19 (1) ◽  
pp. 20-27
Author(s):  
Tri Utami ◽  
Hermansyah Hermansyah ◽  
Merakati Handajaningsih
Keyword(s):  
Dry Weight ◽  
Optimum Concentration ◽  
Vitis Vinifera L ◽  
Fresh Weight ◽  
Shoot Height ◽  
Extract Concentration ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
The City

The purpose of this study was to determine the optimum concentration of shallot extract to the growth of grape cuttings grape cuttings. This study was conducted from September to December 2015 in the city of Bengkulu. This research used Completely Randomized Design with a single factor and five replications. Treatment concentrations of 0% (control), shallot extract concentration of 25%, 75% and 100%. The variables measured were the time to sprout, shoot height, the number of leaves, number of roots, fresh weight and dry weight of cuttings. The results showed that the concentration of shallot extract 100% concentration enhances the growth of grape cutting, time to sprout, and the concentration of extract 50% increase shoot height and number of leaves on grape cuttings.

scholarly journals USE OF AGROMINERAL AS SUBSTRATE FOR GROWTH OF EUCALYPTUS SEEDLINGS

FLORESTA ◽  
2022 ◽  
Vol 52 (1) ◽  
pp. 025
Author(s):  
Rafael Cipriano da Silva ◽  
Karen Beneton ◽  
João José Cardinali Ieda ◽  
Antonio Carlos de Azevedo ◽  
Marcos Gervasio Pereira
Keyword(s):  
Slow Release ◽  
Clay Fraction ◽  
Mineralogical Composition ◽  
Exchange Capacity ◽  
Initial Growth ◽  
Sand Fraction ◽  
Randomized Design ◽  
Granulometric Analysis ◽  
Completely Randomized Design ◽  
Growth Of Seedlings

Success in the production of eucalyptus seedlings directly affects the development of plants in the field. Several factors influence their initial growth, especially the substrate. This study aimed to evaluate the growth of Eucalyptus globulus seedlings and characteristics of the substrate using silicate agromineral (SA) in different proportions (substrate:SA; v/v): T0 – 100:00%, T1 – 90:10%, T2 – 80:20%, and T3 – 50:50%. The treatments were evaluated using a completely randomized design. Measurements of height (H), stem diameter (SD) and calculation of the H/SD ratio of the plants were performed every 3 weeks, totaling 4 measurements. At the end of the experiment (12 weeks), soil fertility analyses, granulometric analysis (sand, silt and clay) and total chemical analysis were carried out. Due to the chemical and mineralogical composition of SA, its use in substrate in a greater proportion (T3) promoted the increase of exchangeable K, Ca and Si contents, which influenced the increase in the sum of bases and cation exchange capacity. The levels of assimilable P and micronutrients Fe, Cu, Zn and Mn were also higher in this treatment. The increase in  SA proportions in the substrate composition also favored increase in the sand fraction and reduction in the clay fraction. As for the growth of seedlings, the results were not significant for H and SD as a function of SA doses, leading to the conclusion that the solubilization and slow release of nutrients by SA did not influence the growth of the plants

Pengaruh Berbagai Konsentrasi Atonik Terhadap Pertumbuhan Stek Panili (Vanilla plani

Agrotek ◽  
2018 ◽  
Vol 2 (4) ◽  
Author(s):  
Amelia S. Sarungallo ◽  
Bagyono Bagyono ◽  
Bagyono Bagyono ◽  
Aris Patiung ◽  
Aris Patiung
Keyword(s):  
Root Length ◽  
Dry Weight ◽  
Germination Percentage ◽  
Single Node ◽  
Growing Media ◽  
Root Dry Weight ◽  
Randomized Design ◽  
Two Factors ◽  
Media Types ◽  
Completely Randomized Design

This research was aimed to identify the influence of Atonic cencentration to the growth of single-node Vanilla cutting planted at various growing media types. Completely randomized design was used in this research with two factors namely Atonic concentration (500 ppm, 1000 ppm, 1500 ppm, 2000 ppm, dan 2500 ppm) and growing media types (tanah, pasir, tanah + pupuk kandang, tanah + pasir, tanah + pasir + pupuk kandang). The result showed that there were no interaction between Atonic concentration and growing media types to the growth of single-node vanilla cutting. Furthermore, the application of Atonic concentration at 2000 ppm established the best result of root length (12,32 cm) and root dry weight (0,16); while the best result of germination percentage (92,23%) revealed by Atonic concentration of 1500 ppm. Regression analysis of germination percentage showed that the optimal concentration of Atonic was 1842 ppm with R<sup>2</sup> = 60,3%. Mixed media of soil + sand + dung performed the best result in root length, root dry weight and germination percentage.

scholarly journals MAGNETIC FIELD AND GIBBERELIC ACID AS PRE-GERMINATION TREATMENTS OF PASSION FRUIT SEEDS

2019 ◽  
Vol 17 (1) ◽  
pp. 15 ◽  
Author(s):  
Renata Diane Menegatti ◽  
Luana Oliveira de Oliveira ◽  
Ádrya Vanessa Lira da Costa ◽  
Eugenia Jacira Bolacel Braga ◽  
Valmor João Bianchi
Keyword(s):  
Magnetic Field ◽  
Dry Weight ◽  
Germination Percentage ◽  
Passion Fruit ◽  
Passiflora Edulis ◽  
Chemical Substances ◽  
Randomized Design ◽  
Gibberelic Acid ◽  
Mean Germination Time ◽  
Completely Randomized Design

<p>The aim of this study was to evaluate the effect of pre-germination treatments (magneto-priming and immersion of seeds in gibberellic acid solution) on variables associated with germination, emergence and vigor of Passiflora edulis seeds ‘BRS Gigante Amarelo’ cultivar. Seeds were extracted from fruits, washed, immersed for 6 hours in solutions with different GA3 concentrations and later arranged in a circular form in Petri dishes at temperature of 25°C, with and without exposure to magnetic field. Subsequently, analyses associated with the germination and emergency test were carried out. The experimental design was completely randomized design, with 3x2 factorial, three GA3 concentrations (0, 50 and 100 mg L-1) and presence/absence of magnetic field (MF), with four replicates of 20 seeds each. Variables germination percentage, germination speed index, mean germination time, percentage of emerged seedlings, emergence speed index, shoot length and root length and seedling dry weight were evaluated. Results indicate that the exposure of passion fruit seeds to MF in an isolated way stimulates seed germination, emergence and vigor, being an alternative to conventional treatments based on chemical substances.</p>

scholarly journals PERTUMBUHAN TANAMAN KETAPANG (Terminalia catappa L) DENGAN PENAMBAHAN PUPUK ORGANIK DAN NPK PADA TAILING DI PERSEMAIAN

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Eka Musrini ◽  
Abdurrani Muin ◽  
Burhanuddin Burhanuddin
Keyword(s):  
Dry Weight ◽  
Control Treatment ◽  
Cow Dung ◽  
Terminalia Catappa ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Npk Fertilizer ◽  
Completely Randomized Design ◽  
Almost All ◽  
Growth Of Seedlings

Restoration and revegetation must be done to recover the post-mining land ecosystem. The strategy of one vegetative that could be applied to rehabilitate degraded the post-mining land is revegetation with the applications the organic and NPK fertilizer to improve the land conditions and choose the suitable of the plant. Terminalia catappa L is one of the plants classified as a pioneer species and can grow on the poor nutrient land and easy to cultivation. Research on the additions of cow dung as ameliorant and NPK fertilizer to improve the physical, chemical, and biological of tailings media in nursery to the growth of Terminalia catappa L. Treatment was given to the growth of seedlings of Terminalia catappa L using the Completely Randomized Design (RAL) with 2 (two) factor treatment. The first factor is NPK Fertilizer with 5 level treatment such as without Fertilizer (K0), 5 gr (K1), 10 gr (K2), 15 gr (K3), 20 gr (K4). The second factor is an organic compound from cow dung with 5 level treatment such us without cow dung (P0), 10 gr (P1), 20 gr (P2), 30 gr (P3), 40 gr (P4). Each level of treatment consisting of 3 replications so the amount of seedlings in this research is 75 seedlings. Data collected were short high (cm), stem diameter (mm), number of leaves and dry weight of the plant. The result of addition organic and NPK fertilizer on tailing media in nursery gave a significant effect on the growth of height, diameter, number of leaves and dry weight of Terminalia catappa L. The best result media treatment for all parameters is NPK fertilizer and cow dung with combination 20: 40 gr,  although almost all of the ameliorant treatment gave the better result if compare the control treatment without addition organic ameliorant.Keywords: ameliorant, organic and NPK Fertilizer, Tailings, Terminalia catappa L.

scholarly journals Germination and initial development of Simira gardneriana seedling under water stress and at different temperatures

2017 ◽  
Vol 21 (5) ◽  
pp. 333-338 ◽  
Author(s):  
Fabrícia N. de Oliveira ◽  
Jessica R. de Oliveira ◽  
Salvador B. Torres ◽  
Rômulo M. O. de Freitas ◽  
Narjara W. Nogueira
Keyword(s):  
Water Stress ◽  
Water Availability ◽  
Dry Weight ◽  
Germination Percentage ◽  
Initial Development ◽  
Randomized Design ◽  
Seedling Length ◽  
Germination Speed ◽  
Different Temperatures ◽  
Completely Randomized Design

ABSTRACT The germination of seeds is affected by many factors, including water availability and temperature. This study aimed to evaluate the effects of water stress and different temperatures on germination and initial development of S. gardneriana M. R. Barbosa & Peixoto seedlings. The experiment was carried out in a completely randomized design, in a 7 x 4 factorial scheme, with seven potentials (0; -0.1; -0.2; -0.3; -0.4; -0.5 and - 0.6 MPa) and four temperatures (25, 30, 35 and 20-30 °C), with four replicates of 25 seeds. The analyzed variables were germination, percentage of normal seedlings, germination speed index, seedling length (shoot and root) and dry weight (shoot and root). There is a decrease in the germination and vigor of the seeds as the water potential decreases, being less affected under the temperature of 25 °C and very accelerated at 35 °C. The tolerance of S. gardneriana seed germination to water stress is variable between the temperatures and limiting to the formation of normal seedlings from the potential -0.5 MPa at temperatures of 25 to 30 °C and -0.4 and -0.2 MPa for 20-30 and 35 °C, respectively.

scholarly journals Influência da profundidade e posição de semeadura na emergência de Acacia polyphylla DC.

2016 ◽  
Vol 11 (1) ◽  
pp. 23 ◽  
Author(s):  
A. J. Rodrigues ◽  
E. M. C. Batista ◽  
L. M. Oliveira ◽  
A. C. F. Portella ◽  
P. B. Souza
Keyword(s):  
Secondary Succession ◽  
Dry Weight ◽  
Early Growth ◽  
Seedling Development ◽  
Medium Size ◽  
Horizontal Position ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Growth Of Seedlings ◽  
The Ideal

<p>A<em> Acacia polyphylla </em>DC.<em> </em>é uma leguminosa, pertencente à família Fabaceae, conhecida principalmente por monjoleiro, cuja árvore apresenta porte médio e rápido crescimento, a mesma enquadra-se em estágios iniciais da sucessão secundária com grande potencial para o uso na recuperação de áreas degradadas do Bioma Cerrado. Assim, objetivou-se avaliar a influência de diferentes posições e de profundidades de semeadura na emergência e crescimento inicial de plântulas de <em>Acacia polyphylla </em>DC. O experimento foi realizado em delineamento inteiramente casualisado, com quatro repetições de 25 sementes, dispostos em esquema fatorial 3 x 5 (posições e profundidades de semeadura). Os tratamentos consistiram em diferentes posições das sementes no substrato: hilo voltado para cima, hilo voltado para baixo e sementes na horizontal, nas profundidades de 1, 2, 3, 4 e 5 cm. Determinou-se a porcentagem de emergência, índice de velocidade de emergência, bem como o comprimento e a massa seca da parte aérea e da raiz das plântulas. A emergência e o crescimento inicial das plântulas de <em>Acacia polyphylla </em>DC<em> </em>são afetadas pelas posições e profundidades de semeaduras, sendo que o procedimento ideal para o plantio e desenvolvimento das plântulas deve ser em uma profundidade entre 1,4 e 2,8 cm com o hilo na posição horizontal.</p><p align="center"><strong><em>Influence of depth and sowing position in the emergency Acacia polyphylla DC.</em></strong></p><p><strong>Abstract</strong><strong>: </strong><em>Acacia polyphylla</em> DC. is a legume belonging to the Fabaceae family, mainly known for monjoleiro whose tree has medium size and rapid growth, it fits in the early stages of secondary succession with great potential for use in the recovery of degraded areas of the Cerrado Biome. The objective was to evaluate the influence of different positions and sowing depths in the emergence and early growth of seedlings <em>Acacia polyphylla</em> DC. The experiment was conducted in completely randomized design with four replications of 25 seeds, arranged in a factorial 3 x 5 (positions and sowing depths). The treatments consisted of different positions of the seeds in the substrate: hilum facing up, hilum facing down and seeds horizontally at depths of 1, 2, 3, 4 and 5 cm. It was determined the percentage of emergence, emergence speed index, as well as the length and dry weight of shoot and root of seedlings. The emergence and early growth of seedlings <em>Acacia polyphylla</em> DC. are affected by the positions and sowing depths, and the ideal procedure for planting and seedling development must be at a depth between 1.4 and 2.8 cm, with the hilum in horizontal position.</p>

scholarly journals PEMBERIAN AMELIORAN PADA TAILING UNTUK MENINGKATKAN PERTUMBUIHAN KEMIRI (Alaurites moluccana (L) Wild DI PERSEMAIAN

2018 ◽  
Vol 7 (2) ◽  
Author(s):  
. Gustian ◽  
. Burhanuddin ◽  
Wiwik Ekyastuti
Keyword(s):  
Gold Mining ◽  
Organic Matter Content ◽  
Dry Weight ◽  
Biological Properties ◽  
Matter Content ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
Water Holding ◽  
Growth Of Seedlings

Gold mining activities have negatively impacted post-mining land into poor nutrients, low pH, toxic soil, due to heavy metal content, low water holding capacity, low organic matter content and unstable land conditions. To change the tailings to be more productive many of the available technologies, such as the use of manure, compost, litter or the use of soil microbes such as mycorrhiza. The addition of manure can additionally increase nutrient available, can also improve the physical and biological properties of the soil. Alaurites moluccana (L) Wild) is one of the plants classified as a pioneer species because it can grow on critical land with low soil fertility and open soil. Research on ameliorant of tailings to increase the growth of  A. moluccana  in the nursery aims to obtain a mixture of ameliorants with the tailings to enhance the growth of A. moluccana  in the nursery. Treatment was given to the growth of seedlings of A. moluccana  using the Completely Randomized Design (RAL) exprotment method with a total of 8 treatments that included an ameliorant tailing control, tailings with ameliorant a (1: 1, 1: 2, and 1: 3), tailings with ameliorant b (1: 1, 1: 2, and 1: 3) and ultisol soil control, with each treatment repeated 5 times. Data collected were shoot hight (cm), stem diameter (mm), number of leaves and dry weight of plant. The result of tailings treatment  with addition of organic ameliorant gave a very significant effect on the growth of height, diameter, number of leaves and dry weight of the A. Moluccana.  The best media treatment for all parameters is M6 (tailings: kotoran sapi 1: 3). Although virtually all treatments with organic ameliorant  provide better results than controls without the addition of organic ameliorants.Keywords: Tailings, ameliorant, A. moluccana , organic.

Sign in / Sign up

Export Citation Format

Share Document