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Registros recuperados: 47 | |
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Ambrósio, Jurandir; Ascari, João Paulo; Dias, Leonardo Diogo Ehle; Araújo, Dejânia Vieira; Silva, Douglas Mateus Valgoi da; Cia, Edivaldo. |
The objective of this study was to evaluate the performance of cotton genotypes and resistance ramularia leaf spot in two sowing dates. The experimental design was a randomized block with 18 genotypes of cotton and 5 repetitions. They assessed the area under the disease progress curve (AUDPC) and yields, to which were held 8 reviews of disease severity in each third of the plant, lower, middle and upper. The IMA 08-12427 genotype showed lower average total AUDPC, regardless of sowing time. Regarding yield, TMG 82 WS genotypes BRS 371, DP 555 BG RR, FM 982 GL and BRS 372 obtained the highest yield in the first seeding time, ranging from 3,021.97 to 3,623.57 kg ha-1, and classified as resistance as MR, MR, MS, S, MS, respectively. Among the 18 genotypes, the... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum L.; Ramularia areola; Resistência de cultivares.. |
Ano: 2017 |
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/15454 |
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Ribeiro,Samia R. de S.; Souza,Amanda dos S.; Leal,Jéssica F. L.; Borella,Junior; Araujo,André L. S.; Pinho,Camila F. de. |
ABSTRACT The long residual period of pre-emergent herbicides can interfere with successor crops, causing a phenomenon named carryover. This study evaluated the residual effect of imazapyr + imazapic herbicides on cotton crop grown in succession to soybean. The experiment was conducted between September 2016 and March 2017, in a randomized block design with 4 replicates, where the treatments were four doses of imazapyr + imazapic, 75, 150, 225 and 300 g a.i. ha-1, and the control. The analyzed variables were chlorophyll a fluorescence, shoot height, root length and volume, dry shoot mass and root dry mass. The data were submitted to analysis of variance and Tukey’s test, at p ≤ 0.05. The reduction in photosynthetic performance indexes for treatments of 150,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum L.; Imidazolinones; Herbicides. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000600400 |
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Araújo,Laíse Ferreira de; Almeida,Wener Santos de; Bertini,Cândida Hermínia Campos de Magalhães; Vidal Neto,Francisco das Chagas; Bleicher,Ervino. |
The continuous development and evaluation of new genotypes through crop breeding is essential in order to obtain new cultivars. The objective of this work was to evaluate the genetic divergences between cultivars of upland cotton (Gossypium hirsutum L.) using the agronomic and technological characteristics of the fibre, in order to select superior parent plants. The experiment was set up during 2010 at the Federal University of Ceará in Fortaleza, Ceará, Brazil. Eleven cultivars of upland cotton were used in an experimental design of randomised blocks with three replications. In order to evaluate the genetic diversity among cultivars, the generalised Mahalanobis distance matrix was calculated, with cluster analysis then being applied, employing various... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum L.; Fibre quality; Agronomic characteristics. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000200012 |
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Silva,Leda V. B. D.; Lima,Vera L. A. de; Silva,Vivianny N. B.; Sofiatti,Valdinei; Pereira,Tamyris L. P.. |
Objetivou-se, neste estudo, avaliar o efeito residual da adubação orgânica com torta de mamona sobre o crescimento, o acúmulo de nitrogênio foliar e a produção de algodoeiro irrigado com efluente de esgoto doméstico tratado. As plantas de algodoeiro foram cultivadas em vasos com material de solo proveniente de plantio anterior com gergelim submetido aos tratamentos que resultaram da combinação fatorial de cinco doses de torta de mamona (0, 2, 3, 4 e 5 t ha-1) e duas qualidades de água de irrigação (água de abastecimento e efluente doméstico tratado), com três repetições. Aos 30, 50, 70, 90 e 110 dias após a emergência determinaram-se a altura das plantas, a área foliar total e o teor de nitrogênio nas folhas com auxílio de um medidor portátil de clorofila.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adubação orgânica; Gossypium hirsutum L.; Reúso de água; Nitrogênio. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662013001200003 |
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Registros recuperados: 47 | |
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