scholarly journals Phenotypic adaptability of cotton genotypes to the brazilian cerrado for yield and fiber quality

2020 ◽  
Vol 36 (4) ◽  
Author(s):  
Mayara Fávero Cotrim ◽  
Francisco José Correa Farias ◽  
Luiz Paulo de Carvalho ◽  
Larissa Pereira Ribeiro Teodoro ◽  
Carlos Antonio da Silva Junior ◽  
...  
Keyword(s):  
Fiber Length ◽  
Fiber Strength ◽  
Fiber Quality ◽  
Block Design ◽  
Brazilian Cerrado ◽  
Gxe Interaction ◽  
Randomized Block Design ◽  
Cotton Genotypes ◽  
High Predictability ◽  
Fiber Traits

Studies on the adaptability and stability are fundamental for plant breeding as they are an alternative to reduce the effects of genotypes x environments interaction (GxE). Moreover, they help identify cultivars with predictable behavior, which are responsive to environmental improvements, subsidizing cultivar recommendation. This study aimed to investigate the genotypes x environments interaction in cotton genotypes grown in the Brazilian Cerrado and identify genotypes for favorable and unfavorable environments. During the 2013/2014 and 2014/2015 seasons, 19 competition trials were carried out with cotton in a randomized block design, with 12 treatments, and four replications. The traits cotton seed yield, fiber percentage, fiber length, and fiber strength were evaluated. Results revealed significant GxE interaction for all the fiber traits evaluated. Genotype BRS 369 RF revealed general adaptability and high predictability for the fiber traits evaluated.

scholarly journals Comparison of The Fiber Characteristics of the Some Cotton Varieties Ginned by Using Sawgin and Rollergin

2021 ◽  
Vol 9 (6) ◽  
pp. 946-952
Author(s):  
Sevtap Kartal ◽  
Lale Efe
Keyword(s):  
Fiber Length ◽  
Fiber Strength ◽  
Fiber Quality ◽  
Block Design ◽  
Short Fiber ◽  
Consistency Index ◽  
Fiber Analysis ◽  
Randomized Block Design ◽  
Fiber Fineness ◽  
Positive Effect

In this study carried out in 2015 under conditions of Kahramanmaraş province of Turkey, it was aimed at determining the effects of sawgin and rollergin methods on fiber quality in some cotton (Gossypium hirsutum L.) cultivars. In the study varieties of Lydia, Carisma, PG 2018, Flash, BA 440, BA 119 Maraş-92 and Erşan-92 were used as experimental materials. The trial was established according to factorial randomized block design with four replications. Seed cottons obtained from the trial were ginned in the rollergin and sawgin machines. In the obtained lint cotton samples, a number of fiber characteristics were determined by using HVI and AFIS fiber analysis devices. Ginnig outturn (38.6%), fiber length (30.21 mm), uniformity index (86.02%), fiber strength (31.76 g tex-1), spinning consistency index (SCI) (104.68) determined by using rollergin system were found higher than ones determined by using sawgin system (respectivelly 37.2%, 29.78 mm, 84.61%, 30.97 g tex-1, 94.50). Short fiber index (3.47%) and nep count (59.40 number g-1) obtained from rollergin system were found lower than ones obtained from sawgin system (respectivelly 4.38% and 119.34 number g-1). As a result it can be said that the rollergin method has positive effect on ginnig outturn, fiber length, uniformity index, fiber strength, spinning consistency index, short fiber index and nep count. When fiber length, fiber strength, spinning consistency index, nep size are considered together the best variety was Lydia cv. (respectivelly 30.87 mm, 32.56 g tex-1, 104.25, 675.63 μm). Ginning outturn, uniformity index, short fiber index, total particule number, dust particule number and trash count are considered together the best variety was Erşan-92 cv. (respectivelly 39.4%, 86.02%, 3.48%, 231.4 number g-1, 206.3 number g-1, 25.13 number g-1). For fiber fineness the best varieties were BA 119 and Maraş-92 cv. (respectivelly 4.78 mic. and 4.80 mic.).

scholarly journals Environmental stratification in the brazilian cerrado on the yield and fiber quality of cotton genotypes

2019 ◽  
Vol 35 (5) ◽  
Author(s):  
Mayara Fávero Cotrim ◽  
Francisco José Correa Farias ◽  
Luiz Paulo de Carvalho ◽  
Larissa Pereira Ribeiro Teodoro ◽  
Leonardo Lopes Bhering ◽  
...  
Keyword(s):  
Response Pattern ◽  
Fiber Strength ◽  
Fiber Quality ◽  
Block Design ◽  
Field Studies ◽  
Brazilian Cerrado ◽  
Randomized Complete Block Design ◽  
Cotton Genotypes ◽  
Environmental Stratification

Environmental stratification studies are important for the plant breeding, since they allow to adequately plan the experimental network. The objective of this work was to identify similar environments for cotton cultivation in the Brazilian Cerrado regarding yield and fiber quality. Nineteen field studies were carried out in a randomized complete block design with twelve genotypes and four replicates. Agronomic (cotton seed yield and fiber percentage) and technological traits (length, micronaire, fiber strength) were evaluated. These results indicate that there are six environments (PVA3, MON, SHE1, SIN, PPA e TRIN) in which the cotton trials should be installed as a matter of priority owing to the phenotypic response pattern obtained for the evaluated traits. The remaining 13 environments are similar to each other for all traits and can be summarized in strategic locations depending on the ease of installation of the trials.

Transplanting improves the allometry and fiber quality of Bt cotton in cotton–wheat cropping system

2019 ◽  
Vol 56 (1) ◽  
pp. 26-36
Author(s):  
Muhammad Asghar Shah ◽  
Mubshar Hussain ◽  
Muhammad Shahzad ◽  
Khawar Jabran ◽  
Sami Ul-Allah ◽  
...  
Keyword(s):  
Fiber Length ◽  
Fiber Strength ◽  
Management Practice ◽  
Cropping Systems ◽  
Fiber Quality ◽  
Cropping System ◽  
Bt Cotton ◽  
Area Index ◽  
Fiber Fineness

AbstractIn cotton–wheat cropping system of Pakistan, wheat (Triticum aestivum L.) is harvested in late April; however, the optimum sowing time of Bt cotton is mid-March. This indicates a time difference of 4–6 weeks between the harvest of wheat and cotton sowing. It is hypothesized that this overlapping period may be managed by transplanting cotton seedlings (30–45 days old) in late April, after the harvest of wheat due to better performance of already established seedlings. To this end, this study was conducted to evaluate the allometric traits and fiber quality of transplanted Bt cotton after harvesting wheat in the cotton–wheat cropping system. The Bt cotton–wheat cropping systems were flat sown wheat (FSW)–conventionally tilled cotton, FSW–zero tilled cotton, ridge sown wheat–ridge transplanted cotton using 30- and 45-days-old seedlings, and bed sown wheat (BSW)–bed transplanted cotton (BTC) also using 30- and 45-days-old seedlings. The study was conducted at Vehari and Multan in Punjab, Pakistan. Bt cotton in BSW–BTC with 45-days-old seedlings showed better performance for allometric (leaf area index; (LAI), net assimilation rate; (NAR), and crop growth rate; (CGR)), seed cotton yield, and fiber traits (fiber uniformity, fiber length, fiber strength, and fiber fineness) in comparison to other treatments. Most of the fiber quality traits were positively correlated with allometric traits and biological yield (dry matter yield at maturity) at both locations, except correlations of CGR and LAI with fiber fineness and fiber length and NAR with fiber length. As plant growth and fiber quality of transplanted cotton was significantly higher than conventionally grown cotton, our data indicate transplanting is an interesting management practice for improving productivity in wheat–cotton cropping systems.

scholarly journals Respostas de cultivares de girassol a doses crescentes de boro na entressafra do Cerrado Tocantinense

2016 ◽  
Vol 11 (1) ◽  
pp. 43
Author(s):  
A. Capone ◽  
A. S. Dario ◽  
M. Z. Menegon ◽  
R. R. Fidelis ◽  
H. B. Barros
Keyword(s):  
Boron Concentration ◽  
Block Design ◽  
Micronutrient Deficiency ◽  
Boron Deficiency ◽  
Brazilian Cerrado ◽  
Randomized Block Design ◽  
Sunflower Crop ◽  
Best Responses ◽  
Achene Production ◽  
Leaf Boron

<p class="Default">No cerrado brasileiro a deficiência de boro no solo ocorre com maior frequência. A cultura do girassol é muito sensível à deficiência deste micronutriente, além de apresentar pouca eficiência em seu aproveitamento. Neste contexto, objetivou-se com este estudo avaliar as respostas de cultivares de girassol a doses crescentes de boro no período da entressafra no cerrado tocantinense. O experimento foi conduzido em Gurupi, (TO), com sistema de plantio direto em sucessão a soja, sobre Latossolo Vermelho Amarelo distrófico. O delineamento experimental utilizado foi de blocos casualizados, com quinze tratamentos e quatro repetições. Os tratamentos foram dispostos num esquema fatorial simples 3 x 5, constituído por três cultivares de girassol (variedade Br 122, híbridos Aguará 4 e Helio 863) e cinco doses de ácido bórico (0, 1, 2, 3 e 4 kg ha<sup>-1</sup>). As características avaliadas foram: altura de planta, diâmetro da haste, diâmetro do capítulo, concentração de boro foliar, massa de mil aquênios e produtividade de aquênios. A dose de 3 kg ha<sup>-1</sup> de boro proporcionou, em sua grande maioria, as melhores respostas das cultivares Br 122, Aguará 4 e Helio 863 quanto às características avaliadas. No entanto, com esta dose, a cultivar Aguará 4 apresenta melhor aproveitamento para produção de aquênios.</p><p class="Default" align="center"><strong><em>Responses of sunflower cultivars to increasing doses of boron in the </em></strong><strong><em>between harvests the Cerrado Tocantinense</em></strong><strong><em></em></strong></p><p class="Default"><strong>Abstract</strong><strong>:</strong> In the brazilian cerrado soil boron deficiency occurs more frequently. The sunflower crop is very sensitive to this micronutrient deficiency, and have little efficiency in its use. In that context, aimed to of this study was to evaluate the response of sunflower cultivars to increasing doses of boron during the between harvests in the cerrado tocantinense. The experiment was conducted in Gurupi (TO), with no-tillages soybeans in succession on dystrophic Red Yellow Latosol. The experimental design was a randomized block design with fifteen treatments and four replications. The treatments were arranged in a factorial 3 x 5 simple, composed of three cultivars of sunflower (variety Br 122, hybrid Aguará 4 and Helio 863), and five doses of boric acid (0, 1, 2, 3, and 4 kg ha<sup>-1</sup>). The characteristics evaluated were: plant height, stem diameter, head diameter, leaf boron concentration, weight of thousand achenes and productivity achenes. The dose of 3 kg ha<sup>-1</sup> resulted boron, mostly, the best responses of the cultivars Br 122, Aguará 4 and Helio 863 on the characteristics evaluated. However, at this dose, the cultivar Aguará 4 has better use for achene production.</p><p class="Default"> </p>

scholarly journals Estimation of Genetic Effects Controlling Different Plant Traits in Cotton (Gossypium Hirsutum L.) Under Clcuv Epidemic Condition

2017 ◽  
Vol 50 (1) ◽  
pp. 47-56 ◽  
Author(s):  
A.M. Khan ◽  
S. Fiaz ◽  
I. Bashir ◽  
S. Ali ◽  
M. Afzal ◽  
...  
Keyword(s):  
Plant Traits ◽  
Fiber Strength ◽  
Block Design ◽  
Cotton Leaf ◽  
Cotton Leaf Curl Virus ◽  
Fiber Fineness ◽  
Cotton Genotypes ◽  
Seed Index ◽  
Leaf Curl Virus ◽  
Additive Genes

Abstract Nine cotton genotypes, comprised of four non Bt males (CIM-1100, CIM-506, FH-942 and FH-900), five Bt female genotypes (FH-113, FH-114, MNH- 886, AA-703 and IR-3701) and their 20 crosses were screened in order to evaluate their response to Cotton leaf curl virus symptoms through epidemiology in the field and greenhouse. The 20 crosses among their nine parents were sown in two replications under randomized complete block design, during 2013 and 2014. The mean squares were significant for all traits indicating that both additive and non-additive genes control the characters, but non-additive genes were more important because, variance of dominant genes were higher than additive genes. In our test, FH-900 showed the best performance against CLCuV, number of lobes per boll and seed yield. The CIM- 1100 genotype performed well in boll weight, fiber strength and fiber fineness, whereas CIM-506 was good for plant height, number of sympodial branches and ginning. Maximum boll number, seed index and fiber length were shown by FH-942. Among lines, MNH886, FH-113, IR-3701 and FH-114 exhibited the best general combination for many traits. Hence, parents were preferred for hybridization program to improve the majority of characters. Hybrids FH-113 × FH-942, MNH-886 × CIM-1100, MNH-886 × FH-942, IR-3701 × CIM-506, AA-703 × CIM-1100, FH-114 × FH-942, FH-114 × CIM-1100 and MNH-886 × FH- 900 was best in specific combinations for different traits, especially against CLCuV. The results indicated that to increase resistance against CLCuV, hybrids should be exploited to develop CLCuV resistance.

scholarly journals Does the nitrogen application associated with Azospirillum brasilense inoculation influence corn nutrition and yield?

2019 ◽  
Vol 23 (1) ◽  
pp. 53-59 ◽  
Author(s):  
Elton M. de Souza ◽  
Fernando S. Galindo ◽  
Marcelo C. M. Teixeira Filho ◽  
Paulo R. T. da Silva ◽  
Arthur C. dos Santos ◽  
...  
Keyword(s):  
Grain Yield ◽  
Azospirillum Brasilense ◽  
Nutritional Value ◽  
Block Design ◽  
Brazilian Cerrado ◽  
Nitrogen Application ◽  
No Till ◽  
Randomized Block Design ◽  
Set Up ◽  
Corn Grain

ABSTRACT The aim of this study was to investigate the synergistic effect between inoculation with Azospirillum brasilense and nitrogen application, thus enabling a higher efficiency of nitrogen fertilization, as evaluated by nutritional value, components production, and grain yield of irrigated corn. The experiment was conducted in Selvíria, MS, Brazil, under a no-till system, on an Oxisol in the Brazilian Cerrado. The experiment was set up in a randomized block design with four replications, in a 4 × 2 factorial arrangement: four patterns of nitrogen application [application of 30 kg ha-1 of N at sowing and 150 kg ha-1 as cover (30 + 150); 30 kg ha-1 of N at sowing, split into two applications of 75 kg ha-1 as cover (30 + 75 + 75); 180 kg ha-1 of N at sowing (180); and 150 kg ha-1 of N at sowing and 30 kg ha-1 as cover (150 + 30)]; with and without inoculation of the seeds with A. brasilense. The application of 30 kg ha-1 of N at sowing and a single application of 150 kg ha-1 or two applications of 75 kg ha-1 in topdressing, inoculated with Azospirillum brasilense provided better nutrition and development, with a positive reflection on irrigated corn grain yield in the Brazilian Cerrado.

scholarly journals Can silicon (Si) fertilization influence the production and nutritional value of Urochloa Convert HD364?

2019 ◽  
Vol 40 (3) ◽  
pp. 1317
Author(s):  
Jaqueline Rocha Wobeto Sarto ◽  
Marcela Abbado Neres ◽  
Caroline Daiane Nath ◽  
Doglas Bassegio ◽  
Marcos Vinicius Mansano Sarto
Keyword(s):  
Nutritive Value ◽  
Fiber Quality ◽  
Block Design ◽  
Magnesium Silicate ◽  
Tropical Soils ◽  
Mineral Matter ◽  
Randomized Block Design ◽  
Essential Nutrient ◽  
Calcium Magnesium ◽  
Hybrid Cultivar

Tropical soils are highly weathered, acidic, and low in silicon (Si) availability for plants. Si has been considered an essential nutrient for many grasses. Urochloa Convert HD364 is classified as a forage plant that accumulates Si, but the accumulation of this nutrient in the leaf can influence qualitative characteristics, fiber quality, plant architecture, and development of forage. In this study, we aimed to evaluate the production and nutritive value of Urochloa hybrid cultivar Convert HD364 (CIAT 36087) grown from soils collected in the state of Paraná, Brazil. The experiment was carried out in a greenhouse using 8-L plastic pots and three types of soil. Treatments were arranged in a randomized block design in a 3 × 5 factorial: three soils [Rhodic Acrudox (Ox1), Rhodic Hapludox (Ox2) and Arenic Hapludult (Ult)] and five silicate rates (0, 1, 2, 4 and 6 Mg ha-1 of calcium/magnesium silicate), with four replications. Application of CaSiO3 to the soil increases the concentration of Si in the leaves of Urochloa Convert HD364. The dry matter, crude protein and mineral matter, fiber quality, and digestibility of Urochloa were not influenced by the increase in Si levels in the leaves until 45 days after seeding. Forty-five days after planting, CaSiO3 did not interfere with the growth characteristics and production of Urochloa Convert HD364. There is no evidence that the increased Si levels in the leaf affected the production and nutritive value, especially fiber quality of Urochloa Convert HD364 until 45 days after sedding.

scholarly journals Initial growth of Schizolobium parahybae in Brazilian Cerrado soil under liming and mineral fertilization

2016 ◽  
Vol 20 (10) ◽  
pp. 908-912 ◽  
Author(s):  
Ademilson Coneglian ◽  
Pedro H. P. Ribeiro ◽  
Bruno S. Melo ◽  
Rennan F. Pereira ◽  
Joáz Dorneles Junior
Keyword(s):  
Block Design ◽  
Market Potential ◽  
Initial Growth ◽  
Brazilian Cerrado ◽  
Mineral Fertilization ◽  
Randomized Block Design ◽  
Root Shoot Ratio ◽  
Soil Liming ◽  
Number Of Leaves ◽  
Soil Fertilizer

ABSTRACT High prices and the scarcity of hardwoods require the use of alternative wood sources, such as the Guapuruvu (Schizolobium parahybae), an arboreal species native to the Atlantic Forest, which has fast growth and high market potential. However, there is no information on its cultivation in the Brazilian Cerrado. Thus, this study aimed to analyze the contribution of mineral fertilization and liming in a Cerrado soil on the initial growth of Schizolobium parahybae. The experiment was set in a randomized block design, with 4 treatments (Cerrado soil; soil + liming; soil + fertilizer; and soil + fertilizer + liming) and 15 replicates. The following variables were analyzed: plant height, stem diameter, number of leaves, total, shoot, leaf, root and stem dry matter, and root/shoot ratio. The obtained data were subjected to the analysis of variance, Tukey test and regression analysis. During the initial growth, Schizolobium parahybae can be cultivated in a Brazilian Cerrado soil only under mineral fertilization, with no need for soil liming.

scholarly journals Management of Biostimulant and Silicon in Mineral Nutrition and Quality of Cotton Fiber

2018 ◽  
Vol 10 (10) ◽  
pp. 476
Author(s):  
William H. Fichhof ◽  
Ricardo de A. Silva ◽  
Luan S. de Oliveira ◽  
Rudieli M. da Silva
Keyword(s):  
Mineral Nutrition ◽  
Abiotic Stresses ◽  
Fiber Quality ◽  
Block Design ◽  
Nutrient Content ◽  
Yield And Quality ◽  
Fiber Yield ◽  
Randomized Block Design ◽  
Relative Water

Silicon (Si) and biostimulant management have been proposed techniques to reduce the impacts of abiotic stresses and to increase the productivity of several crops, however, there are still few concise results of the management of this crop. The objective of this work was to evaluate the effects of biostimulant and silicon treatments on isolated or mixed applications on mineral nutrition, yield and fiber quality of two cotton varieties. For this, an experiment was carried out in a randomized block design in the municipality of Lu&iacute;s Eduardo Magalh&atilde;es-BA, in a 4 &times; 2 factorial arrangement, with four replications, in which four biostimulant treatments (control, without application; Si; biostimulant; and Si + biostimulant) were evaluated in two cotton varieties (FM 954GLT and FM 983GLT). The nutrient content of leaves, relative water content, electrolyte leakage, fiber yield, and quality were evaluated, the data collected were submitted to the F test and means were compared by Tukey at 5% probability. At the end of the experiment, it was verified that the management of Si and biostimulants increase the integrity of the cell wall, the association of Si + biostimulant increases the levels of N, Fe and Si foliar and reduces the levels of B and Mn, and do not influence on yield and fiber quality.

Cotton (Gossypium Hirsutum) Response to DPX-PE350 Applied Postemergence

1993 ◽  
Vol 7 (1) ◽  
pp. 159-162 ◽  
Author(s):  
David L. Jordan ◽  
Robert E. Frans ◽  
Marilyn R. McClelland
Keyword(s):  
Adverse Effect ◽  
Gossypium Hirsutum ◽  
Fiber Length ◽  
Field Experiments ◽  
Fiber Strength ◽  
Fiber Quality ◽  
Growth Stages ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Over The Top

Field experiments were conducted from 1989 through 1991 to determine the effect of DPX-PE350 applied postemergence over-the-top on cotton yield and fiber quality. DPX-PE350, at rates ranging from 50 to 280 g ae ha−1applied to cotton in the VC to R6 growth stages, had no adverse effect on seed cotton yield, micronaire, fiber length, fiber length uniformity, or fiber strength. Cotton injury was 10% or less in all experiments.

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