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| Registros recuperados: 11 | |
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| Schmidt,Denise; Caron,Braulio O; Valera,Oscar; Meira,Daniela; Fontana,Daniele C; Zanatta,Thais P; Werner,Carla J; Brezolin,Patricia. |
| ABSTRACT The objective of this study was to determine the base temperature of escarole and to apply in the phenological analysis of crop during four growing periods. The study was carried out with escarole (Chicorium endivia) ‘Escarola Lisa’ cultivar, at the Federal University of Santa Maria, campus Frederico Westphalen-RS. The experiment was performed in a randomized block design with four sowing periods (P1: 2/15/2015; P2: 04/29/2015, P3: 07/22/2015, P4: 10/16/2015) and 10 replicates, each replicate being one plant. The evaluations consisted of counting the number of leaves, performed three times a week after transplanting date until the harvesting point. To determine the base temperature, the following methods were used: standard deviation in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chicorium endivia; Phenology; Degree-days; Leaf emission. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000400466 |
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| Bueno,Regiane Cristina Oliveira de Freitas; Carneiro,Tatiana Rodrigues; Pratissoli,Dirceu; Bueno,Adeney de Freitas; Fernandes,Odair Aparecido. |
| This research aimed at studing Telenomus remus Nixon biology reared on Spodoptera frugiperda (J.E. Smith) eggs at different temperatures. Based on the development of the cycle (egg-adult), the thermal requirements and the number of parasitoid generations at constant temperatures were determined. Initially, 24-hour-old S. frugiperda eggs were submitted to parasitism by T. remus during 5 h, being then transferred to acclimatized chambers regulated at 15, 20, 25, 28, 31, and 35°C. The cycle (egg to adult) was influenced by temperature varying from 8.3±0.01 to 47.2±0.01 for females and 8.1±0.01 to 46.8±0.01 days for males at 31 and 15°C, respectively. The emergency (%) was also influenced by temperature. A reduction in emergency was observed at 15°C and no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Integrated pest management; Biological control; Eggs parasitoid; Degree-days. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000100001 |
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| Rodríguez Caicedo,Daniel; Cotes Torres,Jose Miguel; Cure,José Ricardo. |
| Eight methods were used to estimate degree-days in four Colombian localities. Four methods have been previously proposed in literature: Simple Sine, Double Sine, Simple Triangle, and Double Triangle methods. The other four methods are proposed in this research: Simple Logistic, Double Logistic, Simple Normal, and Double Normal. The estimation of the degree-days through hourly temperature values was used as the reference standard method, and the four localities from where the temperature values were taken were the municipalities of Cajicá (Cundinamarca), Santa Elena (Antioquia), Carepa (Urabá Antioqueño), and Ciudad Bolivar (Zona cafetera Antioqueña). Degree-days obtained by all methods under study were compared through linear regression to those obtained... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Degree-days; Thermal time; Temperature threshold; Statistical modeling. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052012000200020 |
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| Silva,Edilane Aparecida da; Silva,Wilson Jesus da; Barreto,Antônio Carlos; Oliveira Junior,Antonio Barbosa de; Paes,José Mauro Valente; Ruas,José Reinaldo Mendes; Queiroz,Domingos Sávio. |
| The present study aimed to estimate the basal temperature and thermal sum for the following tropical forage plants: Brachiaria decumbens, cultivar Basilisk; Brachiaria brizantha, cultivar Marandu; Brachiaria brizantha, cultivar Xaraes; Panicum maximum, cultivar Mombaça; Panicum maximum, cultivar Tanzania; and Cynodon spp, cultivar Tifton 85, in ten cutting seasons, under irrigation. The climatic data were collected in an automatic weather ministration installed in the experimental area and used for irrigation management. The relative development or regression equation method was used to calculate the basal temperature. The estimated basal temperature values were 15.4; 10.5; 14.2; 13.4; 12.4 and 15.1 ºC and the demands were of 2,088.1; 3,542.5; 2,486.5;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Degree-days; Relative development; Seasonality production; Seasonality; Threshold temperature; Vegetation dynamics. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000300014 |
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| Santos,Jaqueline Jesus Santana dos; Pêgo,Rogério Gomes; Couto,Beatriz Rodrigues Monteiro; Bueno,Mateus Marques; Carvalho,Daniel Fonseca de. |
| ABSTRACT Water management and meteorological conditions during the cropping phase play an essential role in maintaining the commercial quality of cut flowers. This study evaluates water requirement, sensitivity to water deficit, and commercial quality of gladiolus ‘Amsterdam’ produced with automated irrigation in different growing periods. The experimental design was in randomized blocks with five replicates and consisted of the growing period factors (winter/spring 2018 and autumn/winter 2019) and the irrigation level factors (45% - L1, 60% - L2, 80% - L3, and 100% - L4 of crop water requirement). An automatic irrigation controller was used for irrigation management. At the harvest point, we evaluated the stems for the diameter, number of flowers, spike... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gladiolus x grandiflorus Hort.; Irrigation water management; Degree-days; Protected cultivation.. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100242 |
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| Araujo,Leandro Coelho de; Santos,Patricia Menezes; Rodriguez,Daniel; Pezzopane,José Ricardo Macedo. |
| ABSTRACT: Climate, soil and management are the main drives for growth and production of tropical pastures. Thus, a better understanding of the effects of these factors and their interactions under climate conditions is required to obtain effective management options. Here, we used data from two field trials to research on climate and management interactions on the production seasonality of Panicum maximum Jacq. Treatments included four sampling times (250, 500, 750, and 1000 °C accumulated) during eight regrowth period, under irrigated and rainfed conditions and, cuts were made to simulate grazing intensity. All treatments were arranged in a completely randomized block design with four replications. At each sampling time, basal tillers were sampled to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Daylength; Degree-days; Mombaça; Tropical forage; Water deficit. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000300191 |
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| Tecchio,Marco Antonio; Silva,Marlon Jocimar Rodrigues da; Paiva,Ana Paula Maia; Moura,Mara Fernandes; Terra,Maurilo Monteiro; Pires,Erasmo José Paioli; Leonel,Sarita. |
| Abstract: The objective of this work was to evaluate the phenological characteristics and yield of 'Vênus' grapevine (Vitis labrusca) grafted onto different rootstocks, as well the physicochemical traits of its grapes during the 2013, 2014, and 2015 crop seasons. The evaluated rootstocks were 'IAC 766', 'IAC 572', 'IAC 313' and 'IAC 571-6'. The length of the main phenological stages of the grapevine and its thermal demands were assessed during two growing seasons and expressed as days after pruning and degree-day sum, respectively. Grapevine yield and berry physicochemical characteristics were assessed during three crop seasons. 'Vênus' phenological cycle and thermal demands, as well as the chemical characteristics of its grapes, varied with the climate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis labrusca; Degree-days; Hybrid grapes; Phenological stages; Thermal requirement. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102702 |
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| Hormaza,Paola; Fuquen,Eloina Mesa; Romero,Hernán Mauricio. |
| Oil palm is one of the most important oil crops in the world. Because of its high productivity and perennial nature, it has been expanding quickly. Commercial plantations consist mostly of the African palm E. guineensis Jacq. However, producers in Latin America are increasingly planting the O × G interspecific hybrid, a cross between African palm (E. guineensis) and the American palm (E. oleifera (Kunth) Cortés). This interspecific hybrid has emerged as a promising solution to diseases such as the bud rot of oil palm because of the apparent partial resistance of this genotype to the disease. This work studied and described the phenology of the O × G interspecific hybrid. The phenology stages were coded using the BBCH scale. The scale for the phenophases... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: BBCH scale; Degree-days; Phenophase. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162012000400007 |
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| Ferraz,Rafael Augusto; Leonel,Sarita; Souza,Jackson Mirellys Azevedo; Ferreira,Rafael Bibiano; Modesto,Joyce Helena; Arruda,Lucas Lencioni. |
| Abstract: The objective of this work was to evaluate the phenological patterns, vegetative growth, and yield characteristics of fig (Ficus carica)varieties in Southeastern Brazil. The 'Roxo de Valinhos', White Genova, PI-189, and Troyano varieties were distributed in a randomized complete block design and evaluated in the field. The following characteristics were assessed: number of days between pruning and the beginning of sprouting; leaf chlorophyll content; number of shoots on each branch; length, diameter, and number of internodes on each branch; number of leaves per plant; leaf area; number of fruit per plant; mass, length, and diameter of fruit; production and yield; and duration (days) of each phenological stage, such as thermal requirement models.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ficus carica; Degree-days; Leaf area; Production; Pruning. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2020000102802 |
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| Zeist,André Ricardo; Tomazetti,Tiago Camponogara; Rossarolla,Márcia Denise; Alberto,Cleber Maus; Giacobbo,Clevison Luiz; Welter,Leocir José. |
| Abstract: The objective of this work was to estimate the plastochron index of the 'Cabernet Sauvignon' and 'Chardonnay' grapevine varieties in Fronteira Oeste, in the state of Rio Grande do Sul, Brazil. The experiment was conducted in 2010, in a completely randomized design, using 'Cabernet Sauvignon' and 'Chardonnay' grapevines grown in the municipalities of Itaqui, São Borja, and Maçambará, which were referred to as sites 1, 2, and 3, respectively. Phenological monitoring of the varieties was done from the beginning of sprouting until the pruning of canes (green trimming). The daily thermal sum (dTS, oC day) was calculated using the cardinal temperatures for node appearance in grapevines (10, 25, and 35ºC), whereas the accumulated thermal sum (aTS, oC... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera; Degree-days; Plant development; Temperature; Thermal sum; Viticulture.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000400244 |
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| Registros recuperados: 11 | |
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