scholarly journals Influência dos Fatores Ambientais e da Quantidade de Néctar na Atividade de Forrageio de Abelhas em Flores de Adenocalymma bracteatum (Cham.) DC. (Bignoniaceae)

2013 ◽  
Vol 6 (3) ◽  
pp. 193-201 ◽  
Author(s):  
Keila Nogueira da Silva ◽  
João Cloves Stanzani Dutra ◽  
Mateus Nucci ◽  
Leandro Pereira Polatto
Keyword(s):  
Wind Speed ◽  
Relative Humidity ◽  
Environmental Factors ◽  
Plant Species ◽  
Abiotic Factors ◽  
Pearson Correlation ◽  
Foraging Activity ◽  
Nectar Production ◽  
Focal Area ◽  
Effective Pollinators

Resumo. Este trabalho teve como objetivo avaliar a influência diária dos fatores ambientais e da quantidade de néctar na frequência de forrageio de abelhas em flores de Adenocalymma bracteatum (Cham.) DC. Para isso, foi demarcada uma área focal e registrada a atividade de forrageio das abelhas em um intervalo de 30 minutos para cada hora, das 6:00 às 17:30 h, nas flores da referida espécie vegetal durante quatro dias não consecutivos. Também foi avaliada a produção acumulativa de néctar e o seu consumo pelos visitantes no decorrer do dia. Dados referentes à temperatura, umidade relativa do ar, luminosidade e velocidade do vento foram anotados no início de cada hora. Para verificar se as frequências de forrageios das espécies de abelhas estavam correlacionadas com os fatores abióticos, foram realizados testes de correlação de Pearson. Dentre as espécies registradas, Oxaea flavescens Klug apresentou o maior número de forrageios. O número de forrageio no decorrer do dia não se manteve uniforme, o que faz acreditar que a atividade de forrageio das abelhas sofreu interferência dos fatores ambientais e da quantidade de néctar presente nas flores de A. bracteatum. Os polinizadores efetivos foram responsáveis por 51,6% do total de visitas por flor em A. bracteatum, enquanto os pilhadores de recursos perfizeram 33,1% e os furtadores de recursos realizaram somente 15,3% do total de visitas por flor. Houve ainda, forrageios de formigas e moscas. As formigas sugavam néctar extrafloral, possivelmente conferindo proteção contra pilhagem de néctar. Já as moscas pousavam na corola, mas não extraíram néctar nem pólen. Influence in the Environmental Factors and the Amount of Nectar in the Foraging Activity of Bees on Flowers Adenocalymma bracteatum (Cham.) DC. (Bignoniaceae) Abstract. This study aimed to evaluate the daily influence of environmental factors and the amount of nectar in the foraging frequency of bees on flowers Adenocalymma bracteatum (Cham.) DC. For this, a focal area was demarcated and registered foraging activity of bees in a 30-minute break for every hour from 6:00 a.m. to 5:30 p.m., in the flowers of this plant species during four non-consecutive days. Also was analyzed the nectar production and its consumption by visitors throughout the day. Data relating to temperature, relative humidity, luminosity, and wind speed were recorded at the beginning of each hour. To check if the frequencies of foraging the bee species were correlated with abiotic factors, tests of Pearson correlation were performed. Among the species recorded, Oxaea flavescens Klug had the highest number of foraging. The number of foraging during the day did not remain uniform, which makes to believe that foraging activity of bees suffered interference from environmental factors and the amount of nectar present in flowers of A. bracteatum. The effective pollinators were responsible for 51.6% of total visits per flower in A. bracteatum, while the robber’s resources totaled 33.1%, and only 15.3% of all visits were made by thieves’ resource. There was also foraging of ants and flies. Nectar present around the flower was sucked by ants, possibly conferring protection against robbery nectar. There were flies landing on the corolla of the flowers, but nectar and pollen were not collected.

scholarly journals Contribution to the knowledge of melliferous plants: Ethno apicultural survey with beekeepers in the District of Ziguinchor, Kolda and Sedhiou (Senegal)

2020 ◽  
pp. 1-5
Author(s):  
Kady Diatta ◽  
William Diatta ◽  
Alioune Dior Fall ◽  
Serigne Ibra mbacké Dieng ◽  
Amadou Ibrahima Mbaye ◽  
...  
Keyword(s):  
Plant Species ◽  
Honey Bees ◽  
Foraging Activity ◽  
Nectar Production

An ethno-apicultural survey was carried out for the plant species pollinated by honey bees in the green district of Casamance (South Senegal). This survey followed a well-established questionnaire concerning beekeepers in these areas. The listed melliferous flora was made of 61 species either. It’s divided into 58 genera and 30 families though the most represented are in decreasing order Fabaceae with 12 species (19.67%) followed by Rutaceae and Malvaceae with 4 species (6.55% each), Arecaceae, Anacardiaceae, Combretaceae, Gramineae, Myrtaceae, with 3 species (4.91% each), then Chrysobalanaceae, Lamiaceae, Meliaceae and Rubiaceae with 2 species (3.27% each) and then Acanthaceae, Asteraceae, Canabaceae, Verbenaceae, Apocynaceae, Bignoniaceae, Annonaceae, Hymenocardiaceae, Icacinaceae, Lauraceae, Moringaceae, Musaceae, Celastraceae, Rhizophoraceae, Sapindaceae, Sterculiceae, Moraceae, Ochnaceae, with 1 species (1.63% each). Melliferous plants include 47.54% nectariferous plants followed by nectariferous polliniferous plants with 37.70% and finally polliniferous species with 14.75%. This study enabled us to identify eight (08) species with high melliferous value. To enhance the value of these plants, further studies on foraging activity and nectar production will be led to prove their real melliferous potential.

scholarly journals COMPARAÇÃO ENTRE DADOS METEOROLÓGICOS OBTIDOS POR ESTAÇÕES CONVENCIONAIS E AUTOMÁTICAS NO ESTADO DO PIAUÍ, BRASIL*

Irriga ◽  
2017 ◽  
Vol 22 (2) ◽  
pp. 220-235
Author(s):  
Aureliano De Albuquerque Ribeiro ◽  
Aderson Soares De Andrade Júnior ◽  
Everaldo Moreira Da Silva ◽  
Marcelo Simeão ◽  
Edson Alves Bastos
Keyword(s):  
Wind Speed ◽  
Relative Humidity ◽  
Air Temperature ◽  
Atmospheric Pressure ◽  
Meteorological Data ◽  
Pearson Correlation ◽  
Absolute Error ◽  
Average Relative Humidity ◽  
Operational Issues ◽  
Meteorological Elements

COMPARAÇÃO ENTRE DADOS METEOROLÓGICOS OBTIDOS POR ESTAÇÕES CONVENCIONAIS E AUTOMÁTICAS NO ESTADO DO PIAUÍ, BRASIL*  AURELIANO DE ALBUQUERQUE RIBEIRO1; ADERSON SOARES DE ANDRADE JÚNIOR2; EVERALDO MOREIRA DA SILVA3; MARCELO SIMEÃO4 E EDSON ALVES BASTOS2 1Doutorando em Engenharia Agrícola, Universidade Federal do Ceará, Av. Mister Hull, s/n - Pici, bloco 804, 60455-760, Fortaleza - CE, [email protected] Embrapa Meio-Norte, Teresina, PI, [email protected], [email protected] Professor Adjunto II da Universidade Federal do Piauí, Campus Professora Cinobelina Elvas, Bom Jesus, PI, [email protected] Mestre em Agronomia: Solos e Nutrição de Plantas, Universidade Federal do Piauí, Campus Professora Cinobelina Elvas, Bom Jesus, PI, [email protected]*Extraído da dissertação de mestrado do primeiro autor  1 RESUMOO registro de elementos climáticos é efetuado por estações meteorológicas convencionais e automáticas. Porém, por questões operacionais e de custo, as estações automáticas estão substituindo as convencionais. Contudo, para que as séries de dados dessas estações sejam únicas, há a necessidade de estudos comparativos entre as duas estações. O estudo teve como objetivo comparar dados meteorológicos obtidos por estações convencionais (EMC) e automáticas (EMA) em municípios do Estado do Piauí (Paulistana, Picos, São João do Piauí, Floriano, Parnaíba e Piripiri). Os elementos meteorológicos avaliados foram: temperaturas do ar máxima (°C) mínima (ºC) e média (ºC), umidade relativa média do ar (%), velocidade do vento a 10 m (m s-1), precipitação pluviométrica (mm) e pressão atmosférica média (hPa). As comparações dos dados foram feitas por meio dos seguintes indicadores estatísticos: precisão (R2), erro absoluto médio (EAM), coeficiente de correlação (r), índice de concordância de Willmott (d) e índice de confiança (c). Os melhores ajustes dos dados foram constatados para a precipitação e pressão atmosférica; intermediários, para a temperatura do ar, umidade relativa do ar média e os piores, para a velocidade do vento. A umidade relativa média do ar foi o elemento analisado que mostrou as maiores diferenças entre a EMC e a EMA. Palavras-chave: Agrometeorologia, elementos climáticos, sensores. RIBEIRO, A. A.; ANDRADE JÚNIOR, A. S.; SILVA, E.M.; SIMEÃO, M.; BASTOS, E.A.COMPARISON OF METEOROLOGICAL DATA RECORDED BY CONVENTIONAL AND AUTOMATIC STATIONS IN PIAUÍ STATE, BRAZIL   2 ABSTRACTClimatic elements are recorded by both conventional and automatic weather stations. However, due to cost and operational issues, automatic stations are replacing the conventional. So that  data sets from these stations are unique, there is a need for comparative studies between the two types of stations. The aim of this study was to compare meteorological data obtained by conventional and automatic stations in towns of the State of Piauí, Brazil (Paulistana, Picos, São João do Piauí, Floriano and Piripiri).The meteorological elements evaluated were: maximum (°C) minimum (°C) and average (°C) air temperature, average relative humidity (%), wind speed at 10 m (m s-1), rainfall (mm) and average atmospheric pressure (hPa). Data comparison was by the following statistical indicators: precision (R2), mean absolute error (EAM), Pearson correlation coefficient (r), Willmott’s index of agreement (d) and confidence index (c).  The best data adjustments were observed for rainfall and atmospheric pressure; intermediates for the air temperature, average relative humidity and worst for the wind speed.  The air average relative humidity was the analyzed element that showed the greatest differences between EMC and EMA. Keywords: Agrometeorology, meteorological elements, sensors 

scholarly journals Influence of abiotic factors on incidence of thrips, Scirtothrips dorsalis Hood of cashew in Gujarat

2021 ◽  
Vol 16 (AAEBSSD) ◽  
pp. 7-10
Author(s):  
D.M. Damasia ◽  
Z.P. Patel ◽  
J.B. Dobariya
Keyword(s):  
Wind Speed ◽  
Relative Humidity ◽  
Abiotic Factors ◽  
Research Station ◽  
Hilly Area ◽  
Related Data ◽  
Scirtothrips Dorsalis ◽  
Meteorological Observatory

A study was carried out on cashew variety Vengurla-4 at farmer’s field in hilly area of the Dangs district, Gujarat, India during 2017-18 and 2018-19 to examine the association of pest occurrence with abiotic factors like temperature, humidity, sunshine, wind speed and evaporation. Consistent weekly observations were recorded on the per cent incidence of thrips on three arbitrarily selected trees. The weather-related data was collected for the study from meteorological observatory located at Hill Millet Research Station, Waghai, the Dangs, Gujarat for the retro of two years. The damage by thrips on apple and nut was initiated in the month of January. After ward, damage found rising and it was maximum in the month of February. After the month of February, the damage went on lessening leisurely and almost absent by the end of April. Per cent incidence of thrips exposed non-significant correlation with temperature, relative humidity, sunshine, wind speed and evaporation.

scholarly journals Ethno Apicultural Survey of Melliferous Plant Species in the Great Green Wall Widou and Koyli Alpha, Senegal

2019 ◽  
pp. 1-9
Author(s):  
Kady Diatta ◽  
William Diatta ◽  
Alioune Dior Fall ◽  
Serigne Ibra Mbacké Dieng ◽  
Amadou Ibrahima Mbaye ◽  
...  
Keyword(s):  
Plant Species ◽  
Cultivated Plants ◽  
Indian Species ◽  
Foraging Activity ◽  
Balanites Aegyptiaca ◽  
Nectar Production ◽  
Green Wall ◽  
Sclerocarya Birrea ◽  
Maytenus Senegalensis ◽  
Guiera Senegalensis

This study has surveyed honey plants used by Apis mellifera in the Great Green Wall  of Senegal by  involving 38 people (21 in Widou, 17 in Koyli Alpha). The study  revealed seventeen species divided into fourteen genera and nine families. Fabaceae was the most represented family with 5 species followed by Combretaceae (3 species), Malvaceae and Rutaceae each with 2 species, and Anacardiaceae, Balanitaceae, Rhamnaceae, Sterculiaceae, Meliaceae each with one species.  The most frequent melliferous plant species were : Combretum glutinosum, Guiera senegalensis, Balanites aegyptiaca, Acacia radiana, Lannea acida, Terminalia avicennoides, Sclerocarya birrea, Sterculia setigera and Maytenus senegalensis. The trees were more large with 58.82% followed by shrubs (35.29%) and herbs (5.88%). Spontaneous plants represent 76.47% and cultivated plants represent 23.53%. The melliferous flora was largely dominated by African and Afro-Indian species, which together accounted for 70.58% of the species. According to their apicultural value, the nectariferous species represented 58.82% and the reamining were  polleniferous (41.18%). The species that bloom in the rainy season were more numerous with 52.94% of the species. This  study enabled  us to identify  nine (09) species with  high melliferous value. Further studies on foraging activity and nectar production would be highly useful to test real melliferous potential of these plants and their value further.

scholarly journals Patterns of Floral Nectar Production of Onion (Allium cepa L.) and the Effects of Environmental Conditions

2004 ◽  
Vol 129 (3) ◽  
pp. 299-302 ◽  
Author(s):  
Erin M. Silva ◽  
Bill B. Dean ◽  
Larry Hiller
Keyword(s):  
Wind Speed ◽  
Relative Humidity ◽  
Solar Radiation ◽  
Allium Cepa ◽  
Environmental Conditions ◽  
Floral Nectar ◽  
Nectar Production ◽  
Nectar Volume ◽  
Allium Cepa L ◽  
Late Evening

Successful pollination of onion (Allium cepa L.) flowers greatly depends on adequate nectar production. In order to understand the nectar production dynamics of onion flowers, nectar was collected at regular intervals during a 24-hour period. Hourly nectar volumes were compared to a variety of environmental conditions, including amount of solar radiation, relative humidity, temperature, wind speed, and evapotranspiration. Production patterns showed mid- to late-morning peaks and late evening peaks in nectar volume. Nectar appeared to be reabsorbed by the flowers during the afternoon and overnight hours. Individual flowers produced the highest amount of nectar several days after initially opening. Nectar production was significantly and inversely related to relative humidity while the effects of temperature, evapotranspiration, wind speed and solar radiation on nectar production were not significant in this study.

scholarly journals Lingkungan Fisik dan Angka Kuman Udara Ruangan di Rumah Sakit Umum Haji Makassar, Sulawesi Selatan

2011 ◽  
Vol 5 (5) ◽  
pp. 206
Author(s):  
M. Tahir Abdullah ◽  
Buraerah Abdul Hakim
Keyword(s):  
Relative Humidity ◽  
Environmental Factors ◽  
Physical Environment ◽  
Recovery Room ◽  
Public Hospital ◽  
Pearson Correlation ◽  
Microbial Density ◽  
Physical Environmental Factors ◽  
Density Rate

Udara merupakan salah satu media lingkungan tempat bakteri, virus, dan fungi hidup dan berkembang. Oleh karena mikroorganisme tersebut memerlukan berbagai persyaratan untuk tumbuh dan berkembang, faktor-faktor lingkungan fisik udara tertentu dapat berhubungan dengan angka kuman. Untuk menentukan hubungan ini, telah dilakukan studi potong lintang di ruang rawat inap pasien Rumah Sakit Umum Haji Makasar. Kualitas faktor-faktor lingkungan fisik (pencahayaan, suhu, kelembaban relatif, dankepadatan ruangan) dan angka kepadatan kuman dalam 5 ruang rawat inap (pavilion, kelas 1, kelas 2, kelas 3, dan recovery room) diukur 3 kali (pagi, siang, dan sebelum matahari terbenam) pada 3 titik pengukuran berbeda setiap ruang. Hasilnya menunjukkan bahwa lebih dari 91% angka kuman dan 71%-87% kualitas lingkungan fisik tidak memenuhi kesehatan yang dipersyaratkan oleh Keputusan Menteri Kesehatan RI No. 1204/MENKES/SK/X/2004. Berdasarkan 4 faktor lingkungan fisik yang diukur, hanya kelembaban relatif yang secara langsung berhubungan dengan angka kepadatan kuman (nilai p = 0,023), meskipun korelasi liniernya sangat rendah (korelasi Pearson 0,299). Sesuai dengan tingkat korelasi ini, kontribusi semua faktor lingkungan fisik kepada angka kuman hanya 14,6% (R2 = 0,382). Apabila disesuaikan dengan populasi standar, kontribusi ini hanya 6%.Kata kunci: Angka kuman, faktor lingkungan fisik, rumah sakit umum hajiAbstractAir is an environmental medium where microbe such as bacteria, viruses, and fungi can live and may infect exposed people. As the microbes require appropriate condition to live and grow, particular physical environment of air may associate with microbial density rate. To determine this association, across-sectional study has been conducted in in-patient wards of Makassar Public Hospital of Hajj. Quality of physical environment factors (lighting, temperature, relative humidity, and room density) and microbial density rate of indoor air in five in-patient wards (pavilion, class 1, class 2, class 3, and recovery room) were measured three times (morning, afternoon, and before sunset) at three different sampling sites of each room. The results show that more than 91% microbe rate and 71%-87% quality of physical environmental factors do not comply with the health requirements as regulated in the Ministry of Health Decision of 1204/MENKES/ SK/X/2004. Of four physical environmental factors quantified, only relative humidity is associated directly with the microbe rate (p = 0,023), although its linear correlation is very low (Pearson correlation 0,299). Correspondingly, contribution of all physical environmental factors to the microbe rate is only 6% (R2 = 0,382). Adjusted to the population standard, this contribution is only 6%.Key words: Physical environment factor, microbe rate, hajj public hospital

scholarly journals OPTIMIZATION OF ENVIRONMENTAL FACTORS CONDUCIVE FOR STRIPE RUST OF WHEAT

2017 ◽  
Vol 29 (2) ◽  
pp. 239
Author(s):  
Yasir Ali ◽  
Muhammad A. Khan ◽  
Muhammad Atiq ◽  
Waseem Sabir ◽  
Arslan Hafeez ◽  
...  
Keyword(s):  
Wind Speed ◽  
Relative Humidity ◽  
Environmental Factors ◽  
Disease Severity ◽  
Puccinia Striiformis ◽  
Yellow Rust ◽  
Maximum Temperature ◽  
Wheat Crop ◽  
Severe Condition ◽  
Wheat Diseases

Wheat rusts are the significant diseases of wheat crop and potential threats worldwide. Among all major wheat diseases occurring in all wheat growing areas of the world, yellow rust caused by Puccinia striiformis f. sp. tritici is a big hazard when it occurs in severe condition. The susceptible germplasm and conducive environmental conditions contribute towards wide outbreak of rust diseases. In the present study, eight wheat lines were screened out and correlated with epidemiological factors (temperature, relative humidity, rainfall and wind speed). Results showed that maximum disease severity was observed at minimum and maximum temperature ranging from 13.7-16.7 and 23.5-27.65 0C respectively. Their disease severity was increased with increase in relative humidity ranging from 52-64 %. Similarly, rain fall ranging from 5.7-21.99 mm and wind speed 6.88-11.73 km/h respectively proved conducive for yellow rust development in Sargodha. A positive correlation was observed between disease severity and all environmental factors.

Surveillance of pea leaf miner (P. horticola) infesting pea (Pisum sativum) in relation with abiotic factors

2019 ◽  
Vol 25 (2) ◽  
Author(s):  
Ram Keval ◽  
H.S. Vanajakshi ◽  
Sunil Verma ◽  
Babli Bagri
Keyword(s):  
Wind Speed ◽  
Relative Humidity ◽  
Minimum Temperature ◽  
Abiotic Factors ◽  
Negative Relationship ◽  
Positive Association ◽  
Leaf Miner ◽  
Maximum Temperature ◽  
Seasonal Incidence ◽  
Sunshine Hours

To study the seasonal incidence of insect pests of pea (P. sativum) the investigation was carried out during Rabi session of 2016-17 and 2017-18, at Agricultural Research Farm, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi. The incidence of pests infesting pea was recorded from 50th SMW to 11th SMW. During the observation it was found that P. horticola showed its appearance in the field from 1st to 11th SMW with peak population (71% leaf infestation) in 7th SMW. When population was correlated with abiotic factors it was found that there was positive association with maximum temperature (r = 0.759**), minimum temperature (r = 0.672**), wind speed (r = 0.449).and sunshine hours (r =0.583*) whereas a negative relationship was maintained with morning relative humidity (r =-0.496) and evening relative humidity (r=-0.515), during 2016- 17. Similarly, during 2017-18 there was a positive association with maximum temperature (r = 0.360), minimum temperature (r =0.431), wind speed (r = 0.544*) and sunshine hours(r=0.493) whereas a negative relationship was maintained with morning relative humidity (r =-0.277) and evening relative humidity (r=-0.365).

Evaluation of tea clones for resistance/tolerance to mites infestations and the influence of environmental factors on mites dynamics in Kenyan tea farms

2016 ◽  
Author(s):  
Jenipher A. Odak ◽  
P. Okinda Owuor ◽  
Lawrence O.A. Mang’uro ◽  
Evelyn Cheramgoi ◽  
Francis N. Wachira
Keyword(s):  
Relative Humidity ◽  
Environmental Factors ◽  
Abiotic Factors ◽  
Mitigation Strategies ◽  
Maximum Temperature ◽  
Ecological Zones ◽  
Average Rainfall ◽  
Highly Correlated ◽  
Mite Infestations ◽  
Tolerant Clones

Mites infestations reduce yields in tea production world wide. However, some tea cultivars are resistant/tolerant to mites attack. The resistance/susceptibility can also be influenced by abiotic factors. This study evaluated some new tea clones for mite resistance/susceptibility and influence of Environmental factors (weather parameters) on dynamics of mite infestations of Kenyan tea at different ecological zones, Kangaita, Kipkebe and Timbilil. Maximum population of mites was reported during March when maximum temperature, average rainfall and relative humidity ranges for the sites were 23.9-28.7°C, 27.7-50.1mm and 38.0-70.4% respectively. There was a sharp decline in mites population in April when average rainfall was high (398.4-514.4mm) which was accompanied by reduction in maximum temperature (18.8-27.5°C) and increase in relative humidity (44.0-82.2%). The minimum population density was found during August which was characterized by low maximum temperature (16.4-26.6°C), low average rainfall (4.8- 190.5mm) and high average relative humidity (46.0-80.9%). The mites infestation levels highly correlated with maximum temperatures in Kangaita (r<sup>2</sup> = 0.801), Kipkebe (r<sup>2</sup> = 0.693) and Timbilil (r<sup>2</sup> = 0.744). There were significant (p≤0.05) monthly variations in clonal mite infestations at all sites. Susceptible clones showed higher monthly mite infestations variations than the resistant/tolerant clones. Of the clones evaluated for the first time, eight new clones were identified as tolerant/resistant while two clones were susceptible to mites attack. Resistant/tolerant clones are recommended for commercial exploitation while mitigation strategies should be put in place in mites prone areas during hot seasons with high monthly temperatures and low humidity

scholarly journals Horário Ideal para Coleta de Gafanhotos na Depressão Central no Rio Grande do Sul

2014 ◽  
Vol 7 (2) ◽  
pp. 93-98
Author(s):  
Nathália Leal Carvalho ◽  
Ervandil Correa Costa ◽  
Juliana Garlet ◽  
Danilo Boanerges Souza ◽  
Jardel Boscardin
Keyword(s):  
Wind Speed ◽  
Relative Humidity ◽  
Environmental Factors ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Plastic Bags ◽  
Native Grassland ◽  
Higher Temperature ◽  
Made In ◽  
Main Factor

O objetivo deste estudo foi avaliar a influência dos principais fatores ambientais no comportamento de acridóideos, bem como o horário ideal para coleta de espécimes deste grupo. As coletas foram realizadas em uma área de campo nativo, e para a captura dos insetos utilizou-se uma rede de coleta adaptada, com a qual se percorreu a distância de 20m, nos horários: 7:30, 9:30, 11:30, 13:30, 15:30 e 17:30, sendo que em cada um dos horários coletaram-se 10 amostras. Durante a coleta, foram medidas também, as variáveis meteorológicas: pressão atmosférica, velocidade do vento, temperatura média do ar, umidade relativa do ar e luminosidade, em cada horário de coleta. Os exemplares coletados foram acondicionados em sacos plásticos e levados ao Laboratório de Entomologia da UFSM. Após a separação e montagem os espécimes, foram encaminhados ao Laboratório de Entomologia da Faculdade de Biociências da PUCRS, onde foram identificados em nível de espécie. Foram coletados 568 exemplares adultos, distribuídos em vinte e duas espécies, pertencentes a dezoito gêneros e três famílias Acrididae, Proscopiidae e Romaleidae. Neste estudo observou-se que o melhor horário de coleta para áreas de campo foi as 13:30, onde observou-se maior temperatura, fator principal que possibilitou a coleta de número superior de exemplares e maior diversidade das espécies. Ideal Time to Collect Grasshoppers in the Central Depression in Rio Grande do Sul Abstract. The aim of this study was to evaluate the influence of the environmental factors on the behavior of acridóideos as well as ideal time for collecting specimens of this group. The collections were made in an area of native grassland, and to capture the insects used an adapted collection network, with which it covered the distance of 20m, in times: 7:30, 9:30, 11:30 , 13:30, 15:30 and 17:30, and in each of the schedules were collected 10 samples.  In the collects, measures were also meteorological variables: air pressure, wind speed, mean air temperature, relative humidity and luminosity in each hour of collection. The collected samples were placed in plastic bags and taken to the Laboratory of Entomology UFSM. After separation and assembly were sent to the Laboratory of Entomology, Faculty of Biosciences, PUCRS, where Acridoidea were identified by Prof. Maria Katia Matiotti Coast to the taxonomic category of species. We collected 568 adult specimens, distributed in twenty two species, belonging to eighteen genera and three families Acrididae, Proscopiidae and Romaleidae. During the study it was observed that the best time for collecting field areas was 13:30, where we observed a higher temperature, the main factor that enabled the collection of higher number of copies and greater diversity of species.

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