CRESCIMENTO E PRODUÇÃO DE ALGODOEIRO DE FIBRA COLORIDA CULTIVADO EM SOLO SALINO-SÓDICO E ADUBAÇÃO ORGÂNICA

CRESCIMENTO E PRODUÇÃO DE ALGODOEIRO DE FIBRA COLORIDA CULTIVADO EM SOLO SALINO-SÓDICO E ADUBAÇÃO ORGÂNICA ADAAN SUDÁRIO DIAS1; REGINALDO GOMES NOBRE2; GEOVANI SOARES DE LIMA3; HANS RAJ GHEYI4 E FRANCISCO WESLEY ALVES PINHEIRO5 1Engenheiro Agrônomo – Pós-graduando em Engenharia Agrícola – Unidade Acadêmica de Engenharia Agrícola – Universidade Federal de Campina Grande/UFCG, Campina Grande, PB, Brasil, [email protected];2Engenheiro Agrônomo – Doutor – Unidade Acadêmica de Ciências Agrárias – Universidade Federal de Campina Grande/UFCG, Pombal, PB, Brasil, [email protected];3Engenheiro Agrônomo – Bolsista do Programa Nacional de Pós-Doutorado, PNPD/CAPES,– Unidade Acadêmica de Engenharia Agrícola – Universidade Federal de Campina Grande/UFCG, Campina Grande, PB, Brasil, [email protected];4Engenheiro Agrônomo – Doutor – Núcleo de Engenharia de Água e Solo, UFRB, Cruz das Almas, BA. Brasil, [email protected];5Graduando em Agronomia – Unidade Acadêmica de Ciências Agrárias – Universidade Federal de Campina Grande/UFCG, Pombal, PB, Brasil;[email protected]. 1 RESUMO Os solos das regiões áridas e semiáridas podem naturalmente conter sódio trocável em teores suficientes para reduzir significativamente o desenvolvimento e a produtividade das culturas; entretanto, diversos métodos podem ser empregados na recuperação destes solos, sendo a aplicação de melhoradores químicos e material orgânico associado ao emprego de espécies vegetais tolerantes, o meio mais efetivo para amenizar este problema. Neste sentido, objetivou-se com esta pesquisa avaliar a tolerância do algodoeiro de fibra colorida, cv. BRS Topázio, cultivado em solos com distintos percentuais de sódio trocável (PST) e doses de matéria orgânica em experimento conduzido em condição de casa de vegetação do CCTA/UFCG. O delineamento estatístico utilizado foi o de blocos ao acaso, testando-se cinco níveis de PST(13,6; 22,4; 30,1; 39,0 e 48,0%) e quatro doses de matéria orgânica (0; 5; 10 e 15%, base volume), em esquema fatorial 5 x 4, com três repetições. O algodoeiro colorido cv. BRS Topázio é tolerante ao sódio trocável, podendo ser cultivado em solo com PST de até 30%. Nível de esterco bovino de 10% atenuou o efeito do sódio trocável sobre a área foliar, fitomassa seca da parte aérea e massa de semente do algodoeiro respectivamente, sob PST de 31, 48 e 48. O diâmetro de caule, a altura de planta e a massa de pluma de algodoeiro tiveram incremento até o nível de esterco de 15%, já o maior índice de fiabilidade foi obtido sob 9% de esterco. Palavras-chave: Gossypium hirsutum L..Sodicidade. Esterco bovino. DIAS, A. S.; NOBRE, R.G.; LIMA, G. S. de; GHEYI, H. R.; PINHEIRO, F. W. A.GROWTH AND PRODUCTION OF COLORED-FIBER COTTON CULTIVATED IN SALINE-SODIC SOIL WITH ORGANIC FERTILIZATION 2 ABSTRACT The soils of arid and semiarid regions naturally contain exchangeable sodium that can significantly reduce development and crop yields, being necessary to treat them to make them productive. Several methods can be employed in the reclamation of these soils, like the introduction of tolerant cultivars, such as cotton and the use of organic material, due to its low cost and availability being the most effective ways to alleviate this problem. Thus, the aim of this study was to evaluate the growth and production colored cotton BRS Topaz, when grown in soil with different exchangeable sodium percentages (ESP) and cattle manure in greenhouse of CCTA/UFCG. A completely randomized block design in factorial 5 x 4, with 3 repetitions was used testing five level of ESP and four levels of cattle manure. The colored cotton cv. BRS Topázio is tolerant to exchangeable sodium and can be grown in soil with ESP up to 30%. Organic manure level of 10% attenuated the effect of exchangeable sodium on leaf area, dry weight of shoot and mass of cotton seed, respectively, under ESP of 31, 48 and 48. The stem diameter, plant height and the mass of cotton lint increased up to 15% manure level although the highest spin ability was obtained in 9% of manure and the use of cattle manure was efficient in cultivation of cotton BRS Topaz in sodic soils. Keywords: Gossypium hirsutum L.. Sodicity. Cattle manure.

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IRRIGAÇÃO SUPLEMENTAR DO ALGODOEIRO COM ÁGUA RESIDUÁRIA TRATADA: ANÁLISES BIOMÉTRICAS E PRODUÇÃO DE BIOMASSA

Irriga ◽

10.15809/irriga.2020v25n4p683-688 ◽

2020 ◽

Vol 25 (4) ◽

pp. 683-688

Author(s):

Antonio Flavio Batista De Araujo ◽

Claudivan Feitosa de Lacerda ◽

Eduardo Santos Cavalcante ◽

Jonnathan Richeds da Silva Sales ◽

Raimundo Nonato Távora Costa ◽

...

Keyword(s):

Gossypium Hirsutum ◽

Block Design ◽

Treated Wastewater ◽

Severe Drought ◽

Gossypium Hirsutum L ◽

Stage Of Development ◽

Supplementary Irrigation ◽

Historical Series ◽

Cotton Plants ◽

E Mail

IRRIGAÇÃO SUPLEMENTAR DO ALGODOEIRO COM ÁGUA RESIDUÁRIA TRATADA: ANÁLISES BIOMÉTRICAS E PRODUÇÃO DE BIOMASSA ANTONIO FLAVIO BATISTA DE ARAUJO1; CLAUDIVAN FEITOSA DE LACERDA2; EDUARDO SANTOS CAVALCANTE3; JONNATHAN RICHEDS DA SILVA SALES4; RAIMUNDO NONATO TÁVORA COSTA5 E FERNANDO BEZERRA LOPES6. 1Doutorando, Departamento de Engenharia Agrícola, UFC, Av. Mister Hull 2977, Bloco 804, Campus do Picí, 60450-760, Fortaleza, Ceará, Brasil, e-mail: [email protected]. 2Professor Doutor, Departamento de Engenharia Agrícola, UFC, Av. Mister Hull 2977, Bloco 804, Campus do Picí, 60450-760, Fortaleza, Ceará, Brasil, e-mail: [email protected]. 3Doutor, Departamento de Engenharia Agrícola, UFC, Av. Mister Hull 2977, Bloco 804, Campus do Picí, 60450-760, Fortaleza, Ceará, Brasil, e-mail: [email protected]. 4Mestrando Departamento de Engenharia Agrícola, UFC, Av. Mister Hull 2977, Bloco 804, Campus do Picí, 60450-760, Fortaleza, Ceará, Brasil, e-mail: jonnathanagro@gmail,com. 5Professor Doutor, Departamento de Engenharia Agrícola, U.F.C, Av. Mister Hull 2977, Bloco 804, Campus do Picí, 60450-760, Fortaleza, Ceará, Brasil, e-mail: [email protected]. 6Professor Doutor, Departamento de Engenharia Agrícola, U.F.C, Av. Mister Hull 2977, Bloco 804, Campus do Picí, 60450-760, Fortaleza, Ceará, Brasil, e-mail: [email protected]. 1 RESUMO O uso das águas residuárias tratadas em lagoas de estabilização na irrigação suplementar, desponta como uma estratégia para incrementar a produção agrícola de forma sustentável durante a estação das chuvas, eliminando, pelo menos parcialmente, as perdas associadas aos veranicos. Nesse contexto, o objetivo deste trabalho foi avaliar os impactos da irrigação suplementar do algodoeiro, sem e com adubação química com NPK, e simulando-se as condições de umidade do solo baseada em uma série histórica de dados de precipitação dos últimos 30 anos para a região do Baixo Jaguaribe-CE, considerando-se cenários normais, seca e seca severa. A pesquisa foi desenvolvida no município de Russas – CE, em uma área vizinha à lagoa de estabilização da CAGECE. O ensaio foi instalado em delineamento em blocos ao acaso, com arranjo dos tratamentos em parcelas subsubdivididas, com quatro repetições. Os resultados mostram impactos de cenários hídricos e da suplementação sobre a maioria das variáveis de crescimento das plantas de algodoeiro. A irrigação suplementar com águas residuárias incrementa a produção de biomassa e o vigor das plantas de algodão durante a fase inicial de desenvolvimento, independente da presença ou ausência da adubação com NPK. Esses efeitos foram significativos especialmente nos cenários de seca e seca severa. Palavras-chave: Gossypium hirsutum L, reuso de água, Irrigação. ARAUJO, A. F. B.; LACERDA, C. F.; CAVALCANTE, E. S.; SALES, J. R. S.; COSTA, R. N. T.; LOPES, F. B. SUPPLEMENTAL IRRIGATION OF COTTON WITH TREATED WASTEWATER: BIOMETRIC ANALYSIS AND BIOMASS PRODUCTION 2 ABSTRACT The use of treated wastewater in stabilization ponds for supplementary irrigation emerges as a strategy to increase agricultural production sustainably during the rainy season, eliminating, at least partially, the losses associated with summer. In this context, this work evaluated the impacts of supplementary cotton irrigation, without and with chemical fertilization with NPK, on soil moisture conditions based on a historical series of precipitation data for the last 30 years for the region of Baixo Jaguaribe-CE, considering normal scenarios, drought and severe drought. The research was conducted in the municipality of Russas - CE, in an area adjacent to the CAGECE stabilization pond. The trial was installed in a randomized block design, with the treatments arranged in sub-divided plots, with four replications. The results show impacts of water scenarios and supplementation on most growth variables of cotton plants. Supplementary irrigation with wastewater increases the production of biomass and the vigor of cotton plants during the initial stage of development, regardless of the presence or absence of NPK fertilization. These effects were significant, especially in drought and severe drought scenarios. Keywords: Gossypium hirsutum L, wastewater, irrigation.

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Functional analysis of GhCHS, GhANR and GhLAR in colored fiber formation of Gossypium hirsutum L.

10.21203/rs.2.11140/v3 ◽

2019 ◽

Author(s):

Gao Jianfang ◽

Shen Li ◽

Yuan Jingli ◽

Zheng Hongli ◽

Su Quansheng ◽

...

Keyword(s):

Gossypium Hirsutum ◽

Cotton Fiber ◽

Fiber Formation ◽

Gossypium Hirsutum L ◽

Expression Levels ◽

Color Formation ◽

Colored Cotton ◽

Natural Colored Cotton ◽

Key Genes ◽

Color Depth

Abstract Background The formation of natural colored fibers mainly results from the accumulation of different anthocyanidins and their derivatives in the fibers of Gossypium hirsutum L. Chalcone synthase (CHS) is the first committed enzyme of flavonoid biosynthesis, and anthocyanidins are transported into fiber cell after biosynthesis mainly by Anthocyanidin reductase (ANR) and Leucoanthocyanidin reductase (LAR) to present diverse colors with distinct stability. The biochemical and molecular mechanism of pigment formation in natural colored cotton fiber is not clear. Results The three key genes of GhCHS , GhANR and GhLAR were predominantly expressed in the developing fibers of colored cotton. In the GhCHSi , GhANRi and GhLARi transgenic cottons, the expression levels of GhCHS , GhANR and GhLAR significantly decreased in the developing cotton fiber, negatively correlated with the content of anthocyanidins and the color depth of cotton fiber. In colored cotton Zongxu1 (ZX1) and the GhCHSi , GhANRi and GhLARi transgenic lines of ZX1, HZ and ZH, the anthocyanidin contents of the leaves, cotton kernels, the mixture of fiber and seedcoat were all changed and positively correlated with the fiber color. Conclusion The three genes of GhCHS , GhANR and GhLAR were predominantly expressed early in developing colored cotton fibers and identified to be a key genes of cotton fiber color formation. The expression levels of the three genes affected the anthocyanidin contents and fiber color depth. So the three genes played a crucial part in cotton fiber color formation and has important significant to improve natural colored cotton quality and create new colored cotton germplasm resources by genetic engineering.

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Controle biológico conservativo: Plantas herbáceas e a diversidade e abundância de dermápteros em algodoeiro colorido

EntomoBrasilis ◽

10.12741/ebrasilis.v12i3.841 ◽

2019 ◽

Vol 12 (3) ◽

pp. 132-140

Author(s):

João Marcos Amario de Sousa ◽

Danilo Henrique da Matta

Keyword(s):

Biological Control ◽

Gossypium Hirsutum ◽

Fagopyrum Esculentum ◽

Herbaceous Plants ◽

Faunal Analysis ◽

Pitfall Traps ◽

Gossypium Hirsutum L ◽

Weed Plants ◽

Colored Cotton ◽

Fagopyrum Esculentum Moench

Resumo. No presente estudo avaliou-se o efeito de plantas herbáceas floríferas (PHF) e plantas espontâneas (PE) sobre Dermaptera em algodoeiro colorido. O experimento foi conduzido em área com algodoeiro, Gossypium hirsutum L., cultivar BRS verde (Malvaceae), contendo bordas com plantas herbáceas floríferas (PHF) e plantas espontâneas (PE), durante o período de outubro/2011 a maio/2013. A amostragem foi quinzenal utilizando-se armadilhas tipo alçapão (Pitfall). Os dados obtidos foram submetidos às análises de fauna e variância. O total de 3.527 indivíduos e quatro espécies de Dermaptera foram capturados no algodoeiro colorido e plantas herbáceas. As espécies de dermápteros predominante foi Labidura riparia (Pallas). A maior diversidade de espécies de dermápteros ocorreu em plantas espontâneas (H'= 0,661) e o maior número de indivíduos de em Fagopyrum esculentum Moench e plantas espontâneas.Conservative biological control: Herbaceous plants on diversity and abundance of dermaptera in colored cottonAbstract. The aim of this study was to evaluate the effect of flowering herbaceous plants (FHP) and weed plants (WP) on Dermaptera in colored cotton. The study was conducted in colored cotton, Gossypium hirsutum L., BRS Verde, with FHP and WP, from October/2011 to May/2013. The sampling was fortnightly with pitfall traps. The data were submitted to faunal analysis and analysis of variance (ANOVA). The total of 3,527 individuals and four species of Dermaptera were captured in colored cotton and herbaceous plants. Labidura riparia (Pallas) were Dermaptera predominant, respectively. The higher diversity of species for Dermaptera the greater number was in Fagopyrum esculentum Moench and weed plants (H'= 0,661).

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Respon Pemberian Paclobutrazol pada Beberapa Varietas Kapas (Gossypium hirsutum L.) di Lahan Sawah Sesudah Padi

Buletin Tanaman Tembakau Serat & Minyak Industri ◽

10.21082/bultas.v3n1.2011.30-37 ◽

2016 ◽

Vol 3 (1) ◽

pp. 30

Author(s):

Budi Santoso ◽

Fitriningdyah Tri Kadarwati

Keyword(s):

Gossypium Hirsutum ◽

Block Design ◽

Natural Fibre ◽

Raw Material ◽

Paddy Fields ◽

Cotton Production ◽

Gossypium Hirsutum L ◽

Marginal Lands ◽

Productivity Level ◽

Randomized Block Design

Kapas (Gossypium hirsutum L.) merupakan penghasil serat alam yang digunakan untuk bahan baku tekstil. Pengembangan kapas diarahkan ke lahan-lahan marginal, walaupun sebagian ada yang ditanam pada sawah sesudah padi. Tingkat produktivitas serat kapas, saat ini masih rendah sekitar 0,8 sampai dengan 1 ton per hektar. Usaha peningkatan produksi kapas antara lain dengan pemberian zat stimulan (paclobutrazol), teruta-ma untuk memacu pertumbuhan vegetatif dan generatif seperti tinggi tanaman, jumlah cabang, jumlah bu-nga, dan jumlah buah. Kedua komponen tersebut menjadi penentu hasil serat. Paclobutrazol adalah zat stimu-lan bagi tanaman. Penelitian dilaksanakan di Kebun Percobaan Sumberrejo, Bojonegoro pada bulan Mei sam-pai dengan Oktober 2010, pada lahan sawah sesudah padi. Perlakuan disusun secara faktorial dengan meng-gunakan rancangan acak kelompok yang diulang sebanyak empat kali. Sebagai faktor pertama adalah 4 varietas kapas yang terdiri atas 1) Kanesia 8, 2) Kanesia 13, 3) Kanesia 14, dan 4) Kanesia 15. Faktor kedua adalah pemberian paclobutrazol melalui penyemprotan pada tanaman dengan dosis: a) 0; b) 1,50 l/ha diberikan sekali pada umur 60 hari; dan c) 1,50 l/ha diberikan dua kali umur 60 hari dan 75 hari. Hasil penelitian menunjukkan bahwa kapas varietas Kanesia 8 dan 13 yang ditanam di lahan sawah sesudah padi mempunyai pertumbuhan vegetatif dan generatif optimal, kemudian disusul dengan Kanesia 13, Kanesia 14, dan Ka-nesia 15. Paclobutrazol yang disemprotkan pada tanaman kapas, tidak berpengaruh nyata terhadap pertumbuhan baik vegetatif maupun generatif. Hasil kapas berbiji untuk varietas kapas Kanesia 8 dan Kanesia 13 sama, masing-masing sebesar 1.643 kg/ha dan 1.686 kg/ha. Cotton is a natural fibre crop for some textile raw material. The development of cotton is directed mainly to marginal lands, although few of it is planted in paddy fields after rice harvested. The productivity level of cotton fibre, is still low, about 0.8 to 1 ton per hectare. Effort to increase cotton production is done through the application of growth regulator aiming at enhancing to the growth of plant height, number of branches, number of flower, and boll. These components are fibre determinans. Research conducted at Sumberrejo Ex-perimental Garden, Bojonegoro from May to October 2010, in paddy fields after rice harvested. Factorial treat-ment arranged using randomized block design repeated four times. The first factor consisting of four cotton varieties: 1) Kanesia 8, 2) Kanesia 13, 3) Kanesia 14, and 4) Kanesia 15. The second factor is application of pa-clobutrazol by spraying the plants with usage of: a) 0, b) 1.50 l/ha given once at age 60 days, and c) 1.50 l/ ha given twice at the age of 60 days and 75 days. The research showed that Kanesia 8 and Kanesia 13 varie-ties gave optimum vegetative and generative growth followed with Kanesia 13, Kanesia 14, and Kanesia 15. Paclobutrazol did not contribute significant effect on the growth of both vegetative and generative of cotton. The productivity of seed cotton of Kanesia 8 and Kanesia 13, 1,643 kg/ha and 1,686 kg/ha, respectively.

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Aplikasi Teknologi Seed Coated dan Seed Delinted pada Benih Kapas (Gossypium hirsutum L.)

Buletin Tanaman Tembakau Serat & Minyak Industri ◽

10.21082/btsm.v11n1.2019.16-23 ◽

2019 ◽

Vol 11 (1) ◽

pp. 16

Author(s):

Taufiq Hidayat RS ◽

Nurindah Nurindah ◽

Anik Herawati

Keyword(s):

Gossypium Hirsutum ◽

Seed Quality ◽

Block Design ◽

Seed Viability ◽

Environmentally Friendly ◽

Maximum Growth ◽

Seed Coating ◽

Seed Treatments ◽

Gossypium Hirsutum L ◽

Arabic Gum

Seed coated merupakan teknologi pelapisan benih dengan bahan tertentu untuk mempertahankan mutu benih dan membuat bentuk benih lebih teratur. Prosesing benih kapas saat ini masih menggunakan bahan kimia seperti asam sulfat (seed delinted) untuk menghilangkan kabu-kabu (linter) yang masih menempel pada biji setelah proses pemisahan serat dan biji. Seed delinted memungkinkan terjadinya kerusakan kulit hingga lembaga biji dan dapat menimbulkan masalah lingkungan dari limbah yang dihasilkan dalam proses tersebut. Penelitian ini bertujuan untuk menguji pengaruh perlakuan benih pada tiga jenis varietas terhadap viabilitas benih kapas. Penelitian ini menggunakan Rancangan Faktorial dalam RAK. Faktor Pertama terdiri atas beberapa perlakuan benih yaitu benih berkabu, benih delinted, coated dengan tapioka dan kaolin serta coated dengan arabic gum. Sedangkan, faktor kedua terdiri atas varietas kapas yaitu Kanesia 10, Kanesia 18 dan Kanesia 19. Hasil penelitian menunjukkan bahwa interaksi antara perlakuan benih dengan varietas kapas berpengaruh nyata untuk parameter panjang radikula dan menghasilkan koefesien keragaman mencapai 9.85%. Perlakuan benih coated dengan bahan arabic gum menunjukkan hasil yang terbaik untuk semua parameter pengamatan. Sedangkan, varietas Kanesia 10 menunjukkan persentase keserempakan tumbuh, persentase daya berkecambah, dan persentase potensi tumbuh maksimum terbaik masing-masing 92.25%, 96.25%, dan 98.00%. Perlakuan benih dengan teknologi seed coated menggunakan arabic gum pada Varietas Kanesia 10 dapat menunjukkan persentase viabilitas benih kapas terbaik. Effect of Seed Coating on the Seeds Viability of Three Cotton Varieties ( Gossypium hirsutum L.) Seed coating technology with certain materials is objected to maintain seed quality and to make seed shapes more regular. Currently, cotton seeds processing is using chemicals such as sulfuric acid (acid seed delinted) to remove the linter which is still attached to the seeds after the separation of fibers and seeds. Acid seed delinting could causing damage on the seed skin as well as to the seed embryo and also cause environmental problems from the waste produced in the process. Seed coated technology has the prospect to be applied in the process of cotton seeding, so the process becomes environmentally friendly. This study aims to evaluate the effect of seed coating treatment on three cotton varieties on the seed viability. This study uses Randomized Block Design Factorial. The first factor consisted of four seed treatments namely fuzzy seed (control), seed delinted, seed coated with tapioca and kaolin and seed coated with arabic gum. The second factor were cotton varieties namely Kanesia 10, Kanesia 18, and Kanesia 19. The results showed that the interaction between seed treatments with cotton varieties significantly affected the radicular length parameters and produced a coefficient of varians 9.85%. Seed coated with arabic gum showed the best results for all observation parameters. Kanesia 10 showed the best of growing simultaneity, germination, and the potential maximum growth by 92%, 96%, and 98%, recpectively. The cotton cotton seed coated with arabic gum is prospective to be applied in the cotton seeding process as an alternative to the acid delinting technique that is not environmentally friendly.

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Functional analysis of GhCHS, GhANR and GhLAR in colored fiber formation of Gossypium hirsutum L.

10.21203/rs.2.11140/v4 ◽

2019 ◽

Author(s):

Gao Jianfang ◽

Shen Li ◽

Yuan Jingli ◽

Zheng Hongli ◽

Su Quansheng ◽

...

Keyword(s):

Gossypium Hirsutum ◽

Cotton Fiber ◽

Fiber Formation ◽

Gossypium Hirsutum L ◽

Expression Levels ◽

Color Formation ◽

Colored Cotton ◽

Natural Colored Cotton ◽

Key Genes ◽

Color Depth

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Functional analysis of GhCHS, GhANR and GhLAR in colored fiber formation of Gossypium hirsutum L.

10.21203/rs.2.11140/v2 ◽

2019 ◽

Author(s):

Gao Jianfang ◽

Shen Li ◽

Yuan Jingli ◽

Zheng Hongli ◽

Su Quansheng ◽

...

Keyword(s):

Gossypium Hirsutum ◽

Cotton Fiber ◽

Fiber Formation ◽

Gossypium Hirsutum L ◽

Expression Levels ◽

Color Formation ◽

Colored Cotton ◽

Natural Colored Cotton ◽

Key Genes ◽

Color Depth

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EMERGENCE, GROWTH, AND PRODUCTION OF COLORED COTTON SUBJECTED TO SALT STRESS AND ORGANIC FERTILIZATION

Revista Caatinga ◽

10.1590/1983-21252018v31n322rc ◽

2018 ◽

Vol 31 (3) ◽

pp. 719-729 ◽

Cited By ~ 1

Author(s):

LEANDRO DE PÁDUA SOUZA ◽

GEOVANI SOARES DE LIMA ◽

HANS RAJ GHEYI ◽

REGINALDO GOMES NOBRE ◽

LAURIANE ALMEIDA DOS ANJOS SOARES

Keyword(s):

Organic Matter ◽

Irrigation Water ◽

Seed Weight ◽

Sandy Loam ◽

Block Design ◽

Water Salinity ◽

Randomized Block Design ◽

Irrigation Water Salinity ◽

Colored Cotton ◽

Four Levels

ABSTRACT The semi-arid region of Northeast Brazil is vulnerable to problems of water scarcity and salinity, resulting in low-quality irrigation water and the need to adopt cultivation strategies that make the production system viable. Given the above, this study aimed to evaluate emergence, growth, and production of colored cotton subjected to increasing levels of irrigation water salinity and organic matter doses. The experiment was carried out in a eutrophic Regolithic Neosol with a sandy loam texture in a greenhouse in the municipality of Campina Grande - PB, Brazil. A randomized block design was used in a 4 x 4 factorial scheme with three replicates, and the treatments corresponded to four levels of electrical conductivity of water - ECw (1.7, 3.4, 5.1, and 6.8 dS m-1) and four doses of organic matter - OM (0, 2.5, 3.5, and 4.5% based on soil volume). Increasing irrigation water salinity with ECw values above 1.7 dS m-1 reduced emergence, growth, and production of colored cotton, and the cotton seed weight was the variable most affected by salinity. Organic matter addition led to increased cotton growth and production, especially in terms of seed weight. Increasing doses of organic matter attenuated the effect of irrigation water salinity on the number of bolls in ‘BRS Jady’ cotton.

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ESTRATÉGIAS DE MANEJO DO DÉFICIT HÍDRICO EM FASES FENOLÓGICAS DO ALGODOEIRO COLORIDO

Irriga ◽

10.15809/irriga.2020v25n4p656-662 ◽

2020 ◽

Vol 25 (4) ◽

pp. 656-662

Author(s):

Lauriane Almeida dos Anjos Soares ◽

KAROLINE MARIA MENDES DIAS ◽

HEMILE MACHADO NASCIMENTO ◽

GEOVANI SOARES DE LIMA ◽

KELDER JOSÉ ALVES DE OLIVEIRA ◽

...

Keyword(s):

Gossypium Hirsutum ◽

Water Deficit ◽

Irrigated Agriculture ◽

Limiting Factor ◽

Gossypium Hirsutum L ◽

Root Shoot Ratio ◽

Colored Cotton ◽

Cotton Genotypes ◽

E Mail ◽

Phenological Phases

ESTRATÉGIAS DE MANEJO DO DÉFICIT HÍDRICO EM FASES FENOLÓGICAS DO ALGODOEIRO COLORIDO LAURIANE ALMEIDA DOS ANJOS SOARES1; KAROLINE MARIA MENDES DIAS2; HEMILE MACHADO NASCIMENTO3; GEOVANI SOARES DE LIMA4; KELDER JOSÉ ALVES DE OLIVEIRA5 E SAULO SOARES DA SILVA6 1 Unidade Acadêmica de Ciências Agrárias, Universidade Federal de Campina Grande, UFCG, Rua Jario Vieira Feitosa, 1770, Bairro dos Pereiros, Pombal, PB, Brasil. E-mail: [email protected] 2 Unidade Acadêmica de Ciências Agrárias, Universidade Federal de Campina Grande, UFCG, Rua Jario Vieira Feitosa, 1770, Bairro dos Pereiros, Pombal, PB, Brasil. E-mail: [email protected]. 3 Unidade Acadêmica de Ciências Agrárias, Universidade Federal de Campina Grande, UFCG, Rua Jario Vieira Feitosa, 1770, Bairro dos Pereiros, Pombal, PB, Brasil. E-mail: [email protected] 4 Unidade Acadêmica de Engenharia Agrícola, Universidade Federal de Campina Grande, UFCG, Rua Aprígio Veloso, 882 -Universitário, Campina Grande, PB, Brasil. E-mail: [email protected] 5 Unidade Acadêmica de Ciências Agrárias, Universidade Federal de Campina Grande, UFCG, Rua Jario Vieira Feitosa, 1770, Bairro dos Pereiros, Pombal, PB, Brasil. E-mail: [email protected] 6 Unidade Acadêmica de Engenharia Agrícola, Universidade Federal de Campina Grande, UFCG, Rua Aprígio Veloso, 882 -Universitário, Campina Grande, PB, Brasil. E-mail: [email protected] 1 RESUMO A escassez hídrica é um fator limitante para a agricultura irrigada, principalmente em algumas fases do algodoeiro, afetando os processos fisiológicos e consequentemente a produtividade. Neste contexto, objetivou-se com este trabalho avaliar a fitomassa e os componentes de produção de genótipos de algodoeiro colorido sob déficit hídrico nas diferentes fases de fenológicas da planta. As plantas foram conduzidas em lisímetros sob condições de campo, no Centro de Ciências e Tecnologia Agroalimentar pertencente à Universidade Federal de Campina Grande, na cidade de Pombal-PB. O delineamento utilizado foi em blocos ao acaso em esquema fatorial 3 x 3, sendo três genótipos de algodão de fibra colorida (BRS Rubi, BRS Topázio e BRS Safira) irrigados sob déficit hídrico durante as três fases de desenvolvimento da cultura (vegetativa, floração e frutificação). A relação raiz/parte aérea é mais sensível aos efeitos do déficit hídrico na fase de floração e formação dos capulhos. Dentre os genótipos o BRS Topázio é o mais tolerante ao déficit hídrico (40% da ETr) durante a fase vegetativa para o número de sementes totais. O déficit hídrico na fase de frutificação do algodoeiro colorido pode ser utilizado no cultivo do algodoeiro com as menores perdas no peso de 100 sementes. Palavras-chave: Gossypium hirsutum L., fitomassa, produção SOARES, L. A. dos A.; DIAS, K. M. M.; NASCIMENTO, H. M.; LIMA, G. S. de OLIVEIRA, K. J. A. de; SILVA, S. S. da STRATEGIES FOR THE MANAGEMENT OF WATER DEFICIT IN PHENOLOGICAL PHASES OF COLORED COTTON 2 ABSTRACT Water scarcity is a limiting factor for irrigated agriculture, mainly in some phases of cotton, affecting physiological processes and consequently productivity. In this context, this work aimed to evaluate the phytomass and production components of colored cotton genotypes under water deficit in different phenological phases of the plant. The plants were conducted in lysimeters under field conditions, at the Center for Science and Agrifood Technology belonging to the Federal University of Campina Grande, in the city of Pombal-PB. The design used was in a randomized block in a 3 x 3 factorial scheme, with three colored fiber cotton genotypes (BRS Rubi, BRS Topázio and BRS Safira) irrigated under water deficit during the three stages of crop development (vegetative, flowering and fruiting). The root/shoot ratio is more sensitive to the effects of water deficit during flowering and boll formation. Among the genotypes, BRS Topázio is the most tolerant to water deficit (40% of ETr) during the vegetative phase for the number of total seeds. The water deficit in the fruiting stage of colored cotton can be used in the cultivation of cotton with the lowest losses in the weight of 100 seeds. Keywords: Gossypium hirsutum L., phytomass, production

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Heterosis Studies for Seed Cotton Yield and Fibre Quality Traits in Upland Cotton (Gossypium hirsutum L.)

Indian Journal of Agricultural Research ◽

10.18805/ijare.a-5577 ◽

2020 ◽

Author(s):

V. Udaya ◽

H. S. Saritha ◽

Rajesh S. Patil

Keyword(s):

Gossypium Hirsutum ◽

Upland Cotton ◽

Block Design ◽

Crop Improvement ◽

Quality Parameters ◽

F1 Hybrids ◽

Quality Traits ◽

Fibre Quality ◽

Gossypium Hirsutum L ◽

Improvement Programme

Background: Cotton hybrids has its own advantage than varieties in yield and fibre properties. Heterosis breeding helps in identifying F1 hybrids and in creating variability. The chief intention of any hybridization programme is to combine all the desirable genes present in two or more parents into a single genetic background. Methods: This investigation helped in identifying the extent of heterosis in crosses among eight elite selected lines and five testers in upland cotton (Gossypium hirsutum L.) which was conducted at ARS Dharwad Farm during kharif 2017-18. The all 40 hybrids were derived by line × tester crossing which were analysed for productivity traits along with fibre quality in a randomised block design. Result: The hybrids, CPD-462 × SCS-1061, FLT-36 × SCS-1061 and CPD-462 × NNDC-30 were the most potential crosses. Crosses CPD-462 × IH-11 and FLT-44 × NNDC-24 also recorded desirable fibre quality parameters. These crosses can be exploited for crop improvement programme as they registered high per se performance combined with significant heterosis for most of the yield and fibre quality traits. This study reveals good scope for commercial exploitation of heterosis as well as isolation of potential progenies from the heterotic F1 hybrids.

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