scholarly journals Demografia de Syagrus harleyi, uma palmeira acaule endêmica da Chapada Diamantina, Bahia, Brasil

2012 ◽  
Vol 12 (2) ◽  
pp. 313
Author(s):  
Cezar Neubert Gonçalves ◽  
Felipe Weber Mesquita ◽  
Fernanda Andrade Viana
Keyword(s):  
Plant Height ◽  
Initial Development ◽  
Chapada Diamantina ◽  
Vertical Growth ◽  
Reproductive Structures ◽  
Early Stages ◽  
Kolmogorov Smirnov ◽  
Number Of Leaves ◽  
Episodic Recruitment ◽  
Smirnov Test

The stemless palm Syagrus harleyi is endemic to the Chapada Diamantina, and the ecology and biology of the species remain unknown. The aim of this paper is to present the results of an analysis of the demographics of S. harleyi in six populations in the Serra do Sincorá, Bahia State, Brazil. We sampled 30 plots of 5 × 5 m. The height and the number of leaves per rosette (ramet identifiable above ground) were recorded. We also recorded the presence of reproductive structures, the length of the sheaths and if the rosettes occur alone or in clumps. It was found 787 rosettes, with 0.98 rosette per m2. No significant differences were detected between populations. The Kolmogorov-Smirnov test found no significant differences in the expected distribution of frequencies of height classes. Most populations had a predominance of intermediate height intervals, but two had a predominantly basal distribution. There were significant differences between sterile and fertile rosettes regarding their height and number of leaves, as well as in number of sheets present in clumps compared to isolated rosettes. The clumps had, on average, 3.91 ± 3.78 rosettes, but two clumps showed 15 and 28 rosettes. The density was found higher than that reported in other works. Studies with other stemless palms also identified the prevalence of intermediate height intervals, a fact credited to episodic recruitment events. However, the vertical growth of the leaves in the early stages of its development can influence plant height. The results indicate that S harleyi may develop as a single rosette or branched individuals forming clumps, which determines four patterns of growth. Comparison with other studies shows that it is difficult to establish ontogenetic patterns in stemless palms, perhaps due to the initial development of these plants, which may occur in the underground.

scholarly journals INITIAL DEVELOPMENT OF GABIROBA (Campomanesia adamantium) ACCORDING TO FERTILIZATION WITH NITROGEN AND PHOSPHORUS

2021 ◽  
Vol 8 (2) ◽  
pp. e5825
Author(s):  
Jéssica Rodrigues de Mello Duarte ◽  
Scarlet De Aguiar Basílio ◽  
Nei Peixoto ◽  
Mariana Pina da Silva Berti
Keyword(s):  
Experimental Design ◽  
Plant Height ◽  
Nitrogen Fertilization ◽  
Stem Diameter ◽  
Nitrogen And Phosphorus ◽  
Initial Development ◽  
Tukey Test ◽  
Number Of Leaves ◽  
Plant Emergence ◽  
Different Doses

Campomanesia adamantium (Cambess.) Berg O. is a native of Savanna, popularly known as gabiroba, guavira, or gabiroba-do-campo, and has many uses, with its fruit being consumed fresh or processed. This study aimed to evaluate different doses of phosphorus and nitrogen in the initial development of gabiroba (Campomanesia adamantium) cultivated in pots. Five doses of phosphorus (0, 100, 200, 300, and 400kg ha-1 of P2O5) and three doses of nitrogen (0, 100, and 200 kg ha-1of N) were tested. The experimental design used was completely randomized in a 5x3 factorial scheme with six replications. The evaluations were carried out 120 days after plant emergence, and the variables analyzed were stem diameter, plant height, and number of leaves. Data were subjected to analysis of variance and F-test. The means were compared by the Tukey test at p0.05. Regression analyzes were adjusted for phosphorus doses. The gabiroba responds significantly to the addition of phosphorus, with the dose of 400 kg ha-1 of P2O5 providing the highest height and the dose of 300 kg ha-1 of P2O5 providing the greatest stem diameter and the number of leaves. Up to 120 days old, gabiroba seedlings do not respond significantly to nitrogen fertilization.

scholarly journals Resistance induction efficiency of silicon dioxide against Meloidogyne incognita in tomato

2019 ◽  
Vol 13 (1) ◽  
Author(s):  
Edilson Marques Junior ◽  
Jorge Tadeu Fim Rosas ◽  
Alixelhe Pacheco Damascena ◽  
Matheus Alves Silva ◽  
Guilherme De Resende Camara ◽  
...  
Keyword(s):  
Silicon Dioxide ◽  
Plant Height ◽  
Dry Weight ◽  
Fresh Weight ◽  
Root Knot Nematode ◽  
Tomato Root ◽  
Initial Development ◽  
Tomato Plants ◽  
Final Population ◽  
Number Of Leaves

The tomato root-knot nematode is one of the main phytosanitary problems in crops. Chemical control is the phytosanitary method most used by farmers, and the study of alternative management of phytonematodes is crucial. The objective of this study was to evaluate the effect of silicon dioxide (SiO2) on the initial development of tomato plants, as well as to determine the best dose of SiO2 for inducing resistance to parasitism by M. incognita. This experiment was set up under a completely randomized design with ten treatments and five replicates in a 5×2 factorial arrangement consisting of five concentrations of SiO2 (0, 0.15, 0.3, 0.45 and 0.6 g dm-³ of soil) with the presence and absence of M. incognita, under greenhouse conditions. The following variables were evaluated: plant height; number of leaves; fresh and dry weight of shoot; percentage of shoot dry matter; root fresh weight; number of galls; final population of nematodes; and population per gram of root. The M. incognita infection affected plant height, number of leaves and shoot fresh weight, while the application of SiO2 negatively affected the formation of galls in the roots of the inoculated plants and the population per gram of root, reducing the final population of nematodes in the root system. SiO2 also provided greater development in the tomato plants, with a significant effect on plant height. The ideal dose was 0.34 g dm-3 of SiO2.

scholarly journals Variation of Water Availability in Initial Development of Safflower

2019 ◽  
Vol 11 (3) ◽  
pp. 558
Author(s):  
Nayara F. F. da S. Cruz ◽  
Luiz A. Zanão Júnior ◽  
Reginaldo F. Santos ◽  
Luciene K. Tokura ◽  
Laís F. J. do Nascimento ◽  
...  
Keyword(s):  
Plant Height ◽  
Water Availability ◽  
Root Length ◽  
Aerial Part ◽  
Seedling Emergence ◽  
Dry Weight ◽  
Dry Mass ◽  
Fresh Weight ◽  
Initial Development ◽  
Number Of Leaves

The availability of water is one of the most important factors for the development of the seeds. Thus, studies related to adequate humidity for germination, emergence and early development of safflowers, is necessary for the productive use of this culture. Thus, the objective of study was to evaluate the initial development of two varieties of seeds of Safflowers (IAPAR and IMA2103) in six levels of water availability in substrate: 0, 10, 20, 30, 40 and 50%. At 15 days the seedling emergence were evaluate. At 30 days were evaluate plant height, root length, stem diameter, number of leaves, fresh weight of the aerial part and root, dry weight of shoot and root. The treatment without irrigation, there was decrease the emergence, emergence speed for both genotypes. Treatments above 30% of water availability in the two varieties presented emergency superior to 50%. Lower irrigation rates favored root length and dry mass.

scholarly journals Crescimento e desenvolvimento inicial da cultura da moringa (Moringa oleifera Lam.) submetida à fertilização orgânica

2015 ◽  
Vol 10 (3) ◽  
pp. 103 ◽  
Author(s):  
T. M. A. Souza ◽  
T. A. Sousa ◽  
H. T. Oliveira Neto ◽  
L. S. Souto ◽  
J. A. Dutra Filho ◽  
...  
Keyword(s):  
Plant Height ◽  
Root Length ◽  
Moringa Oleifera ◽  
Weight Ratio ◽  
Dry Weight ◽  
Organic Fertilization ◽  
Initial Development ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Moringa Oleifera Lam

<p>A moringa (<em>Moringa oleifera</em> Lam) é uma árvore nativa da Índia e de elevada importância principalmente pelo seu valor nutricional, medicinal e de purificação da água. Este trabalho teve como objetivo avaliar o efeito de níveis de fertilização orgânica no crescimento e desenvolvimento inicial de mudas de moringa nas condições semiáridas do Estado da Paraíba, Brasil. O experimento foi conduzido em condições de túnel plástico, localizado no Centro de Ciências e Tecnologia Agroalimentar, da Universidade Federal de Campina Grande, Campus de Pombal, UFCG. Utilizou-se o delineamento inteiramente casualizado, com os tratamentos compostos de sete níveis de fertilização orgânica (0,0; 108,0; 216,0; 432,0; 864,0; 1728,0 e 3456,0 g.vaso<sup>-1</sup>), com quatro repetições. Foram avaliados os seguintes parâmetros: i) altura das plantas (cm), ii) diâmetro do caule (mm), iii) número de folhas, iv) fitomassa fresca das folhas, v) fiomassa seca da parte aérea (g), vi) fitomassa seca da raiz (g), vii) razão fitomassa seca da parte aérea/raiz (g) e, viii) comprimento da raiz principal (cm). A utilização dos níveis de fertilização orgânica influenciou significativamente o crescimento e desenvolvimento inicial das mudas de moringa. Com a elevação dos níveis de esterco adicionados ao substrato, observou-se o decréscimo das variáveis analisadas, tendo como melhor resultado o nível de 864,0 g.vaso<sup>-1</sup> para a altura da planta e o nível de 432,0 g.vaso<sup>-1</sup> para os demais parâmetros avaliados. O nível de 432,0 g.vaso<sup>-1</sup> provocou os maiores acréscimos na massa seca da parte aérea e comprimento das raízes. Os níveis de esterco bovino de 108,0 g.vaso<sup>-1</sup> e 432,0 g.vaso<sup>-1</sup>, promoveram um maior incremento para a razão entre a parte aérea/raiz e comprimento da raiz, respectivamente. Para produção de mudas de moringa de boa qualidade a aplicação de pequenas quantidades de esterco bovino é suficiente.</p><p align="center"><strong><em>O</em></strong><strong><em>rganic fertilization levels on the vegetative growth of moringa (</em></strong><em>Moringa oleifera<strong> Lam.)</strong></em><strong><em></em></strong></p><p><strong>Abstract</strong><strong>: </strong>Moringa (Moringa oleifera Lam) is a tree native of India and high importance especially for its nutritional value, medicinal and water purification. This work aimed to evaluate the effect of organic fertilization levels on growth and initial development of moringa seedlings in semi-arid conditions of the State of Paraiba, Brazil. The experiment was conducted in plastic tunnel conditions, located in the Centro de Ciências e tecnologia Agroalimentar da Universidade Federal de Campina Grande, Campus de Pombal, UFCG. We used a completely randomized design with the treatments composed of seven levels of organic fertilization (0,0; 108,0; 216,0; 432,0; 864,0; 1728,0 e 3456,0 g.vaso<sup>-1</sup>), with four repetitions. The following parameters were evaluated: i) plant height (cm), ii) stem diameter (mm), iii) number of leaves, iv) fresh weight of leaves, v) dry weight of shoots (g), vi) dry weight of the root (g), vii) dry weight ratio of shoot / root (g) and viii) main root length (cm). The use of organic fertilization levels significantly influenced the growth and early development of moringa seedlings. With the rise of manure levels added to the substrate, there was the decrease of the variables analyzed, with a best result the level of 864.0 g.vaso<sup>-1</sup> for plant height and the level of 432.0 g.vaso<sup>-1</sup> for the other parameters. The level of 432.0 g.vaso<sup>-1</sup> caused the greatest increases in dry weight of shoot and root length. The levels of bovine manure 108.0 g.vaso<sup>-1</sup> and 432.0 g.vaso<sup>-1</sup>, promoted a greater increase for the ratio of root / shoot and root length, respectively. To produce good quality moringa seedlings the application of small amounts of bovine manure is sufficient.</p>

Effect of Spraying Foliar with Humus and Izomen Biostimulants on Some Vegetative and Flowering Parameters of Freesia hybrida L.

2019 ◽  
Vol 9 (2) ◽  
pp. 240-246
Author(s):  
Neveen Anwer Abdalla
Keyword(s):  
Plant Height ◽  
Landscape Design ◽  
Vase Life ◽  
College Of Agriculture ◽  
Flowering Date ◽  
Freesia Hybrida ◽  
Loam Soil ◽  
Number Of Leaves ◽  
The University

The experiment has been conducted in the nursery of the Department of Horticulture and Landscape Design, College of Agriculture, the University of Basrah to study the effect of Spraying foliar of the biostimulants Izomen and Humus on the growth and flowering of Freesia plants. The corms in similar size were planted in pots with a diameter and height of 25 cm, which filled with 2.5 kg of sterilized loam soil. After 50 days of planting, the plants sprayed with Humus at 0, 1.5, 2.5 ml L-1 and after five days sprayed with Izomen at 0, 1.5, 2.5 ml L-1 The different concentrations of biostimulants are sprayed three times, the period between one spray and another 15 is days. The results showed that the spraying of Humus at 2.5 ml L-1 significantly increased the plant height, the number of leaves and the leaf content of chlorophyll recorded (29.56 cm, 8.33 and 58.43%) respectively. Moreover, it is recorded early the flowering date (130 days), and the highest flowering mean is (2.12 inflorescence/plant) and the highest period of the remained flowers on the plant and the vase life (10 and 8 days) respectively. The effects of both Humus and Izomen were similar. In addition to the highest mean of their interaction at 2.5 ml L -1for all the studied traits.

PENGARUH KOMPOS SAMPAH KOTA DAN PUPUK KANDANG SAPI TERHADAP PERTUMBUHAN DAN HASIL TANAMAN PAKCOY (BRASSICA RAPA, L. CHINENSIS) PADA ALUVIAL KABUPATEN INDRAMAYU

2018 ◽  
Vol 9 (2) ◽  
pp. 153-163
Author(s):  
Wiwik Ambarsari ◽  
Henly Yuliana
Keyword(s):  
Plant Height ◽  
Brassica Rapa ◽  
Block Design ◽  
Cattle Manure ◽  
Growth And Yield ◽  
Randomized Block Design ◽  
Two Factors ◽  
Number Of Leaves ◽  
Experimental Garden

The study aimed to determine the effect of the combination of city waste compost and cattle manure on the growth and yield of pakcoy plants (Brassica rapa, L. Chinensis) in Aluvial, Indramayu Regency. The study was conducted at the Experimental Garden of the Faculty of Agriculture, Wiralodra University, Indramayu Regency from March to August 2018. This study used Factorial Pattern Randomized Block Design with two factors. The first factor is city waste compost and the second factor is cattle manure with 4 levels: 0%, 3.0%, 6.0%, and 9.0%, repeated twice. The results showed that there was an independent influence between city waste compost and cattle manure on plant height and number of leaves. The best combination to increase the feasibility weight of pakcoy consumption is by giving city waste compost 9.0% (S4) and cattle manure 6.0% (K3).

Age dependency of the diabetes effects on the iris recognition systems performance evaluation results

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Mohammadreza Azimi ◽  
Seyed Ahmad Rasoulinejad ◽  
Andrzej Pacut
Keyword(s):  
Iris Recognition ◽  
Recognition Task ◽  
Aging Effect ◽  
Recognition System ◽  
Health Condition ◽  
Age Dependency ◽  
Biometric Systems ◽  
Kolmogorov Smirnov ◽  
Recognition Systems ◽  
Smirnov Test

AbstractIn this paper, we attempt to answer the questions whether iris recognition task under the influence of diabetes would be more difficult and whether the effects of diabetes and individuals’ age are uncorrelated. We hypothesized that the health condition of volunteers plays an important role in the performance of the iris recognition system. To confirm the obtained results, we reported the distribution of usable area in each subgroup to have a more comprehensive analysis of diabetes effects. There is no conducted study to investigate for which age group (young or old) the diabetes effect is more acute on the biometric results. For this purpose, we created a new database containing 1,906 samples from 509 eyes. We applied the weighted adaptive Hough ellipsopolar transform technique and contrast-adjusted Hough transform for segmentation of iris texture, along with three different encoding algorithms. To test the hypothesis related to physiological aging effect, Welches’s t-test and Kolmogorov–Smirnov test have been used to study the age-dependency of diabetes mellitus influence on the reliability of our chosen iris recognition system. Our results give some general hints related to age effect on performance of biometric systems for people with diabetes.

Multifractal characterization of mechanical vibration signals through improved empirical mode decomposition-based detrended fluctuation analysis

2016 ◽  
Vol 231 (22) ◽  
pp. 4139-4149 ◽  
Author(s):  
Du Wenliao ◽  
Guo Zhiqiang ◽  
Gong Xiaoyun ◽  
Xie Guizhong ◽  
Wang Liangwen ◽  
...  
Keyword(s):  
Empirical Mode Decomposition ◽  
Detrended Fluctuation Analysis ◽  
Fluctuation Analysis ◽  
Intrinsic Mode Functions ◽  
Vibration Signals ◽  
Multifractal Detrended Fluctuation Analysis ◽  
Mode Decomposition ◽  
Kolmogorov Smirnov ◽  
Detrended Fluctuation ◽  
Smirnov Test

A novel multifractal detrended fluctuation analysis based on improved empirical mode decomposition for the non-linear and non-stationary vibration signal of machinery is proposed. As the intrinsic mode functions selection and Kolmogorov–Smirnov test are utilized in the detrending procedure, the present approach is quite available for contaminated data sets. The intrinsic mode functions selection is employed to deal with the undesired intrinsic mode functions named pseudocomponents, and the two-sample Kolmogorov–Smirnov test works on each intrinsic mode function and Gaussian noise to detect the noise-like intrinsic mode functions. The proposed method is adaptive to the signal and weakens the effect of noise, which makes this approach work well for vibration signals collected from poor working conditions. We assess the performance of the proposed procedure through the classic multiplicative cascading process. For the pure simulation signal, our results agree with the theoretical results, and for the contaminated time series, the proposed method outperforms the traditional multifractal detrended fluctuation analysis methods. In addition, we analyze the vibration signals of rolling bearing with different fault types, and the presence of multifractality is confirmed.

scholarly journals Relationship between oral habits and spirometry maneuvers, in children

Revista CEFAC ◽  
2018 ◽  
Vol 20 (1) ◽  
pp. 37-43
Author(s):  
Rafaela Coelho Minsky ◽  
Tayná Castilho ◽  
Roseane Rebelo Silva Meira ◽  
Tatiana Godoy Bobbio ◽  
Camila Isabel Santos Schivinski
Keyword(s):  
Healthy Children ◽  
Chi Square ◽  
Cross Sectional ◽  
Public And Private ◽  
Oral Habits ◽  
Qualitative Variables ◽  
Chi Square Test ◽  
Kolmogorov Smirnov ◽  
Thumb Sucking ◽  
Smirnov Test

ABSTRACT Purpose: to analyze whether deleterious oral habits can influence the number of attempts of forced spirometry maneuvers performed by healthy children. Methods: this observational and cross-sectional analytical study included 149 healthy children aged 6-12 years attending public and private schools in Florianópolis, SC, Brazil. A validated protocol was applied for the analysis of deleterious oral habits. The children were grouped according to the number of spirometry maneuvers needed to achieve successful spirometry results, as follows: G1) children who needed 3 maneuvers; G2) 4 maneuvers; G3) 5-8 maneuvers. Data were analyzed with the Kolmogorov-Smirnov test and the Kruskal-Wallis test was applied to compare quantitative variables between the groups. The Chi-square test was used to assess the association between the groups and qualitative variables. Results: there was no association between the number of attempts and the qualitative variables evaluated by the protocol. There was also no difference between the groups regarding quantitative variables for breastfeeding time, breastfeeding occurrence, use of pacifiers, and thumb sucking. Conclusion: the presence of DOH did not influence the number of forced spirometry maneuvers, performed by the healthy children in this study.

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