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| Aspiazú,I.; Sediyama,T.; Ribeiro Jr.,J.I.; Silva,A.A.; Concenco,G.; Ferreira,E.A.; Galon,L.; Silva,A.F.; Borges,E.T.; Araujo,W.F.. |
| The objective of this work was to evaluate characteristics associated with the photosynthetic activity of cassava plants under weed competition. The trial was carried out under field conditions, and experimental units consisted of 150 dm³ fiberglass boxes containing red yellow Latosol, previously corrected and fertilized. Treatments consisted in the cultivation of cassava plants which were free of weed competition and associated with three weed species: Bidens pilosa, Commelina benghalensis or Brachiaria plantaginea. After manioc sprouting started, 15 days after being planted, weeds that had been sown when manioc was planted were thinned, there were then eight plants left per experimental unit in accordance with specified treatments: cassava free of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Interference; Bidens pilosa; Commelina benghalensis; Brachiaria plantaginea; Physiological variables. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582010000500004 |
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| FERREIRA,G.L.; SARAIVA,D.T.; QUEIROZ,G.P.; SILVA,D.V.; PEREIRA,G.A.M.; FERREIRA,L.R.; OLIVEIRA NETO,S.N.; MATTIELLO,E.M.. |
| The objective of this work was to evaluate the initial growth and the physiological characteristics of eucalypt submitted to different managements of signalgrass. The experiment was conducted in a protected environment, using a randomized blocks design with five repetitions. The treatments were arranged in a (5 x 2) + 1 factorial design, and the first factor corresponded to the types of weed management (no control; chemical control keeping the signalgrass shoot on the soil; chemical control with removal of the signalgrass shoot; mechanical control keeping the signalgrass shoot on the soil, and mechanical control with removal of the signalgrass shoot); the second factor corresponded to the two weeds species (U. brizantha and U. decumbens) and a control... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Control methods; Physiological variables; Initial growth; Urochloa (syn. Brachiaria); Eucalypt. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100099 |
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| Rodrigues,Ladyanne R.; Furtado,Dermeval A.; Costa,Fernando G. P.; Nascimento,José W. B. do; Cardoso,Evaldo de A.. |
| ABSTRACT The objective of this study was to determine the effects of environment and electrolyte balance on environmental, physiological and productive indices of Japanese quails. For the experiment, 288 quails were distributed in a randomized block design with six treatments and six replicates of eight birds per experimental unit. The treatments consisted of one basal feed with 20.0% of crude protein (CP) and the others with a reduction of 3.0% CP to achieve six electrolyte balance levels (166.54; 153.47; 139.63; 139.63; 117.13 and 166.49). As to the environment, there was an increase in air temperature and temperature-humidity index at the hottest hours of the day, causing discomfort to the birds, which increased respiratory rate, but with the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Thermal comfort zone; Physiological variables; Productive indices. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000400378 |
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| ARANTES,ALESSANDRO DE MAGALHÃES; DONATO,SÉRGIO LUIZ RODRIGUES; SIQUEIRA,DALMO LOPES DE; COELHO,EUGÊNIO FERREIRA; SILVA,TÂNIA SANTOS. |
| ABSTRACT This study aimed to evaluate gas exchange of banana Prata in two production cycles in semiarid environment. Six cultivars were used as treatments arranged into a completely randomized design with five replications and four plants per plot. For physiological characteristics, it was considered a factorial arrangement of 6x14x2, six cultivars, 14 periods (months), two readings, 8:00 and 14:00 in each period. The rates of gas exchange, the carboxylation efficiency and the instantaneous efficiency of water use were higher at 8:00 and lower at 14:00, with rare exceptions. The ‘BRS Platina’ had a higher leaf temperature, higher transpiration and lower water use efficiency. ‘Prata-Anã’, ‘FHIA-18’ and ‘Maravilha’ expressed lower leaf temperature and lower... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Musa spp.; AAB and AAAB; Physiological variables. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000200601 |
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