Silicon Promotes Physiological Adjustments, Fiber Yield and Quality Improvement of Naturally Colored Cotton BRS Safira

ABSTRACT Abiotic stresses reduce the yield and quality of cotton production, however, this problem may be mitigated by exogenous elicitors. This study investigated physiological adjustments, improvement in productivity, and fiber yield and quality from naturally colored cotton BRS Topázio cultivar under leaf silicon spraying. Five doses of silicon (0, 50, 100, 150, and 200 mg L-1) were tested in a completely randomized design. The variables assessed were physiological, production, fiber yield and quality. Data were submitted to principal component analysis, multivariate and univariate variance, and multiple linear regression. Silicon promotes physiological adjustments, increased production, cotton fiber yield and quality. Optimum silicon dose varies depending on the variable response. Fiber quality from plants treated with silicon is within the expected pattern for this cultivar and the international standard D-4605 of the American Society for Testing and Materials. Therefore, planting BRS Topázio cultivar under silicon foliar applications may be recommended to improve the naturally colored fiber cotton production chain in the Brazilian semiarid region.

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Economical nitrogen dose for production of irrigated naturally colored cotton in the semi-arid region

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v24n11p783-789 ◽

2020 ◽

Vol 24 (11) ◽

pp. 783-789

Author(s):

Francilene de L. Tartaglia ◽

Allysson P. dos Santos ◽

Almir R. E. de Souza ◽

Manoel G. dos Santos ◽

Lindomar M. da Silveira ◽

...

Keyword(s):

Arid Region ◽

Leaf Tissue ◽

Cotton Yield ◽

Seed Cotton ◽

Fiber Yield ◽

Colored Cotton ◽

N Dose ◽

Semi Arid Region ◽

Naturally Colored Cotton ◽

Semi Arid

ABSTRACT Determining the economical dose of nitrogen (N) for colored cotton can increase yield and income of farmers. The experiment was carried out under field conditions at the Experimental Farm of the Universidade Federal Rural do Semi-Árido, in the years 2016 and 2017. The objective was to determine the economical N dose for four colored cotton cultivars. The experimental design was in randomized blocks, with split plots and four repetitions. Five N doses (0, 50, 100, 150 and 200 kg ha-1) were randomized in the main plots and four colored cotton cultivars (BRS Safira, BRS Rubi, BRS Topázio and BRS Verde) were randomized in the subplots. The characteristics evaluated were seed cotton yield, cotton fiber yield, N concentration in leaf tissue, technical dose and economical dose of N. Higher yield of naturally colored cotton can be obtained using the economical doses of 140 kg ha-1 N for cultivars BRS Rubi and BRS Verde, 150 kg ha-1 N for BRS Topázio and 160 kg ha-1 N for BRS Safira. Highest yield was achieved with the cultivar BRS Topázio and lowest with the cultivar BRS Verde.

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Fiber yield and quality in cotton under drought: Effects and management

Agricultural Water Management ◽

10.1016/j.agwat.2021.106994 ◽

2021 ◽

Vol 255 ◽

pp. 106994

Author(s):

Sami Ul-Allah ◽

Abdul Rehman ◽

Mubshar Hussain ◽

Muhammad Farooq

Keyword(s):

Yield And Quality ◽

Fiber Yield ◽

Drought Effects

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Colored cotton wastes valuation through thermal and catalytic reforming of pyrolysis vapors (Py-GC/MS)

Scientific Reports ◽

10.1038/s41598-021-95043-1 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Janduir Egito da Silva ◽

Guilherme Quintela Calixto ◽

Rodolfo Luiz Bezerra de Araújo Medeiros ◽

Marcus Antônio de Freitas Melo ◽

Dulce Maria de Araújo Melo ◽

...

Keyword(s):

Lignin Content ◽

Proximate Analysis ◽

Catalytic Reforming ◽

Pyrolysis Products ◽

Heating Value ◽

Colored Cotton ◽

Benzene Toluene ◽

Naturally Colored Cotton ◽

Main Influence

AbstractThis study aims to analyze the products of the catalytic pyrolysis of naturally colored cotton residues, type BRS (seeds from Brazil), called BRS-Verde, BRS-Rubi, BRS-Topázio and BRS-Jade. The energy characterization of biomass was evaluated through ultimate and proximate analysis, higher heating value, cellulose, hemicellulose and lignin content, thermogravimetric analysis and apparent density. Analytical pyrolysis was performed at 500 °C in an analytical pyrolyzer from CDS Analytical connected to a gas chromatograph coupled to the mass spectrometer (GC/MS). The pyrolysis vapors were reformed at 300 and 500 °C through thermal and catalytic cracking with zeolites (ZSM-5 and HZSM-5). It has been noticed that pyrolysis vapor reforming at 500 °C promoted partial deoxygenation and cracking reactions, while the catalytic reforming showed better results for the product deoxygenation. The catalyst reforming of pyrolysis products, especially using HZSM-5 at 500 °C, promoted the formation of monoaromatics such as benzene, toluene, xylene and styrene, which are important precursors of polymers, solvents and biofuels. The main influence on the yields of these aromatic products is due to the catalytic activity of ZSM-5 favored by increased temperature that promotes cracking reactions due expanded zeolites channels.

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Plant breeding in the semiarid region of Brazil: examples of success

Cropp Breeding and Applied Biotechnology ◽

10.1590/s1984-70332012000500007 ◽

2012 ◽

Vol 12 (spe) ◽

pp. 57-66 ◽

Cited By ~ 1

Author(s):

Manoel Abílio de Queiroz ◽

Levi de Moura Barros ◽

Luiz Paulo de Carvalho ◽

Jonas de Araújo Candeia ◽

Edinardo Ferraz

Keyword(s):

Cotton Fiber ◽

Production Systems ◽

Rio Grande ◽

Semiarid Region ◽

Breeding Programs ◽

Caatinga Biome ◽

Colored Cotton ◽

Nut Production ◽

Production Area ◽

Naturally Colored Cotton

The Northeastern region of Brazil comprises the Caatinga biome (900,000 km²) part of which is a semiarid region with rainfed and irrigated production systems. Among the successful breeding programs are cashew and cotton. The first led to a substantial increase in nut production in Ceará, Rio Grande do Norte and Piauí and the second bred a naturally colored cotton fiber, now processed in small clothing industries in Paraiba, exporting to 11 countries. In the lower-middle São Francisco valley, the previously grown onion was replaced by improved varieties, on 90% of the production area, and by industrial tomato, introduced by research in 1972, which came to be used on more than 80% of the area at the time. The participation of the private sector and continuity of breeding programs were crucial for the success. More examples of success are expected with the establishment of postgraduate courses in Agricultural Sciences in the Semiarid region.

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