Agronomic performance of soybean genotypes submitted to different population densities in the city of Uberlândia - MG

Documentary and geographical evidence about Boston from 1795 to 1801 reveals distinct patterns in poor people's use of the Boston Almshouse and in their areas of residence within the city. A much higher percentage of Almshouse inmates came from Boston's densely populated North End than from less urban areas with lower population densities. They clustered in distinctive ways—immigrants tending to come from districts close to commercial and shipping areas, and women and families from the outskirts of town. Recurrent users of the almshouse were highly mobile, likely to have changed their ward of residence at least once from 1795 to 1801. This geographical mobility on the part of the poor continuously recreated the city and challenged the contours of class and tradition.

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Soybean Stem Colonization by Genotypes A and B of Cadophora gregata Increases with Increasing Population Densities of Heterodera glycines

Plant Disease ◽

10.1094/pd-90-1297 ◽

2006 ◽

Vol 90 (10) ◽

pp. 1297-1301 ◽

Cited By ~ 4

Author(s):

G. M. Tabor ◽

G. L. Tylka ◽

C. R. Bronson

Keyword(s):

Population Density ◽

Soybean Cyst Nematode ◽

Heterodera Glycines ◽

Cyst Nematode ◽

Stem Rot ◽

Population Densities ◽

Brown Stem Rot ◽

Phialophora Gregata ◽

Soybean Genotypes ◽

Genotype A

Growth chamber experiments were conducted to investigate whether parasitism by increasing population densities of Heterodera glycines, the soybean cyst nematode, increases the incidence and severity of stem colonization by the aggressive genotype A and the mild genotype B of Cadophora gregata (Phialophora gregata), causal agents of brown stem rot of soybeans. Soybean genotypes with three combinations of resistance and susceptibility to H. glycines and genotype A of C. gregata were inoculated with each genotype of C. gregata alone or each genotype with two population densities of H. glycines eggs, 1,500 or 10,000 per 100 cm3 of soil. Stems of two H. glycines-susceptible soybeans were more colonized by both aggressive and mild genotypes of C. gregata in the presence of high than in the presence of low H. glycines population density.

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Filter Pie in the Control of the Nematoid of Root Lesions in the Soybean and Corn

Journal of Agricultural Science ◽

10.5539/jas.v11n11p130 ◽

2019 ◽

Vol 11 (11) ◽

pp. 130

Author(s):

Rafaela Santos de Oliveira ◽

Anderli Divina Ferreira Rios ◽

Manoel Henrique Reis de Oliveira ◽

Rafael Matias da Silva ◽

Matheus Vinicius Abadia Ventura ◽

...

Keyword(s):

Population Density ◽

Filter Cake ◽

Population Increase ◽

Maize Crop ◽

Industrial Processing ◽

Randomized Design ◽

Significant Difference ◽

Pratylenchus Brachyurus ◽

Soybean Genotypes ◽

The City

The efficiency of waste from industrial processing has been increasingly studied in the control of phytonematoids, especially filter cake, coffee husks and sugar cane bagasse. The objective of this study was to evaluate the effect of organic residues through the use of filter cake to reduce the population density of Pratylenchus brachyurus (Tylenchida: Pratylenchidae). The first experiment was conducted in a greenhouse in the completely randomized design in the 2 × 4 factorial scheme (soybean genotypes vs. filter cake doses) with four replications using soybean genotypes AS 3810 IPRO and LG60163 IPRO and the second experiment was carried out under the same conditions, with maize AG 1051 with four doses of filter cake with 7 replications. In both experiments, the planting was carried out in an area located in the city of Goianésia, Goiás, Brazil. The results showed that the population density of Pratylenchus brachyurus in the maize crop to grow AG 1051 did not show statistically significant difference by applying the different doses of filter cake. In soybean genotypes AS 3810 IPRO and LG60163 IPRO were affected in ways contrary to phytonematoid infestation, in which AS 3810 IPRO showed a population increase according to the increase of the applied amounts of filter cake, whereas in the cultivar LG60163 IPRO there was a decrease for doses of 10 tonnes/ha-1 and 30 tonnes/ha-1, with an increase of only 20 tonnes/ha-1.

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Comparison of Soybean Genotypes for Resistance to and Agronomic Performance in the Presence of Brown Stem Rot

Plant Disease ◽

10.1094/pd-70-1095 ◽

1986 ◽

Vol 70 (12) ◽

pp. 1095 ◽

Cited By ~ 19

Author(s):

Alemu Mengistu

Keyword(s):

Stem Rot ◽

Agronomic Performance ◽

Brown Stem Rot ◽

Soybean Genotypes

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Agronomic Performance of Intacta RR2 Soybean Submitted to Doses of Glyphosate

Planta Daninha ◽

10.1590/s0100-83582018360100109 ◽

2018 ◽

Vol 36 (0) ◽

Cited By ~ 1

Author(s):

V.J.S. CESCO ◽

F.H. KRENCHINSKI ◽

D.M. RODRIGUES ◽

R. NARDI ◽

A.J.P. ALBRECHT ◽

...

Keyword(s):

Regression Analysis ◽

Seed Weight ◽

Final Height ◽

Positive Behavior ◽

Agronomic Performance ◽

Total Chlorophyll ◽

Chlorophyll Index ◽

The City ◽

Linear Regressions ◽

100 Seed Weight

ABSTRACT: This study aimed at evaluating the agronomic performance of Intacta RR2 soybean submitted to the application of glyphosate doses in post-emergence. For this, two experiments were conducted in two locations (Palotina and Marechal Cândido Rondon - Paraná state). Applications were carried out with increasing rates of glyphosate (0, 720, 1,440, 2,160, 2,880, 3,600, 4,320 g a.e. ha-1), constituting seven treatments with an experimental design in randomized blocks with four replications, totaling 28 plots for each location. The cultivar used for both experiments was Monsoy 6210 Intacta RR2 IPROTM. The analyzed variables were phytotoxicity at 3, 7, 14, 21 and 28 DAA, A-B and total chlorophyll index, final height, number of pods, 100-seed weight, and yield. A regression analysis was used. There was a positive behavior of the linear regression for phytotoxicity and a negative one for final height, number of pods, A-B and total chlorophyll index, and yield in the city of Palotina. In Marechal Cândido Rondon, there were adjustments of the positive linear regressions for phytotoxicity, and negative linear regressions for chlorophyll index, final height, number of pods and yield. Results show that the glyphosate increase from the dose 1,440 g a.e. ha-1 in the studied cultivar damaged the agronomic performance of the culture.

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Adaptability and stability of conventional soybean by GGE biplot analysis

Pesquisa Agropecuária Tropical ◽

10.1590/1983-40632021v5167995 ◽

2021 ◽

Vol 51 ◽

Author(s):

Marcos Paulo Carvalho ◽

José Airton Rodrigues Nunes ◽

Eduardo Lima do Carmo ◽

Gustavo André Simon ◽

Rânia Nunes Oliveira Moraes

Keyword(s):

Genetically Modified Organisms ◽

Specific Region ◽

Residual Variance ◽

Agronomic Performance ◽

Gge Biplot ◽

Crop Season ◽

Variance Model ◽

Soybean Production ◽

Biplot Analysis ◽

Soybean Genotypes

ABSTRACT The conventional soybean production has been re-establishing itself every year, due to the fact that the international market has demanded products with high agronomic performance and nutritional quality, free of genetically modified organisms. This study aimed to evaluate the adaptability of conventional soybean genotypes in the southwestern Goiás state (Rio Verde, Montividiu and Santa Helena de Goiás), Brazil, during the 2017/2018 and 2018/2019 crop seasons. A randomized blocks design was used, being tested eight genotypes (the cultivars BRS284, BRS283, BRS232, BRS317, NT11-1277, INT3459 and M6101 and the line NT1478SP). The grain and oil yields, as well as the oil and protein contents, were evaluated. Multi-environment analyses were performed using a heterogeneous residual variance model, and the GGE biplot analysis was used to describe the interrelationships between genotypes and environments. The most adapted and stable genotypes were BRS 317 for grain yield and BRS 283 for oil yield. They also corresponded more closely to the ideotype for the specific region, thus proving to be promising. NT1478SP showed the highest protein content. In the 2018/2019 crop season, Montividiu was more discriminating for the conventional soybean production, regarding grain and oil yields.

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COVID-19 and Informal Settlements - Implications for Water, Sanitation and Health in India and Indonesia

10.14324/111.444/000036.v2 ◽

2020 ◽

Author(s):

priti parikh ◽

Yasmin Bou Karim ◽

Jacob Paulose ◽

Professor Pam Factor-Litvak ◽

Dr. Emily Nix ◽

...

Keyword(s):

Environmental Conditions ◽

Informal Settlements ◽

Hand Washing ◽

High Population ◽

Population Densities ◽

Short Term ◽

Water And Sanitation ◽

The Impact ◽

The City

Informal settlements are home to over one billion people worldwide and are characterised by high population densities and poor environmental conditions. The authors identify the impact of COVID-19 on existing water and sanitation practices and potential pathways for transmission of COVID-19 in informal settlements in India and Indonesia. In the short term, there is an urgent need for mobile hand washing, washing/bathing facilities and toilets. In the long term, COVID-19 provides an opportunity to invest in centralised water and sanitation networked solutions appropriated for high-density settings to integrate those settlements into the city, improve environmental conditions and health in cities.

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Effects of building features on density and flock distribution of feral pigeons Columba livia var. domestica in an urban environment

Canadian Journal of Zoology ◽

10.1139/z01-202 ◽

2002 ◽

Vol 80 (1) ◽

pp. 48-54 ◽

Cited By ~ 48

Author(s):

Roberto Sacchi ◽

Augusto Gentilli ◽

Edoardo Razzetti ◽

Francesco Barbieri

Keyword(s):

Population Density ◽

Positive Relationship ◽

Columba Livia ◽

Structural Features ◽

Average Density ◽

Population Densities ◽

Active Selection ◽

Feral Pigeons ◽

The City ◽

Selection Of

We censused feral pigeons (Columba livia) living in Milan, Italy (a 181-km2 area), between July 1999 and February 2000 by means of linear transects to examine population densities in different urban habitats and the relationships between population density and structural features of buildings. The pigeon population of Milan was 103 650 birds, with an average density of 570/km2. Population density increased significantly from farmland (434 birds/km2) to the suburbs (604 birds/km2) and from the suburbs to the centre of the city (2083 birds/km2). There was a positive relationship between both bird number and flock number and the abundance of buildings constructed before 1936. There were no significant associations between either bird number or flock number and the abundance of buildings when we did not consider date of construction. This indicated active selection of old buildings by feral pigeons.

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Morphophysiological traits of soybean leaflets and their relationship with crop agronomic performance

Australian Journal of Crop Science ◽

10.21475/ajcs.20.14.11.p2360 ◽

2020 ◽

pp. 1817-1825

Author(s):

Carlos André Bahry ◽

Ângela Aparecida Carleso ◽

Anelise Tessari Perboni ◽

Françoá Santos Dal Prá ◽

Gelson Geraldo ◽

...

Keyword(s):

Grain Yield ◽

Leaf Area ◽

Agronomic Performance ◽

Productive Potential ◽

Soybean Genotypes ◽

Chlorophyll Index ◽

Red Latosol ◽

Area Unit ◽

The One ◽

Leaf Area Unit

Soybean genotypes have distinct morphophysiological traits, which may influence the crop agronomic performance. The aim of this work was to evaluate the productive parameters of three contrasting soybean genotypes for leaf morphophysiological traits. The experiment was carried out at in a typical Distroferric Red Latosol, located at latitude 25º41'52" S and longitude 53º03'94" W; in the 2015/16 (CY1) and 2016/17 (CY2) seasons. The genotypes tested were: BS 2601 RR® (lanceolate and smaller leaflets); NS 6006 IPRO® (triangular and intermediate leaflets) and homozygous lineage CI 21 IPRO® (oval and larger leaflets). The gas exchange, chlorophyll index, leaf area, leaflet length and width, and petiolulus length were evaluated when plants of each genotype were at the beginning of flowering. At harvest, the variables analyzed were: first pod insertion, plant height, number of pods and grains per plant, grains per pod, mass of one thousand grains and grain yield. The design used was randomized blocks with four replicates. Photosynthesis per leaf area unit was higher in CY2, and is related to greater stomatal conductance, higher chlorophyll index, lower transpiration and lower leaf area of plants. The lanceolate leaf cultivar showed higher grain yield due to the higher number of grains and the greater mass of these grains in the two crop years. In addition, it was the one that obtained lower leaf area and lower transpiration. The cultivar NS 6006 presented greater productive stability, but this trait does not confer greater productive potential.

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