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| Oliveira Júnior,Luiz Fernando Ganassali de; Santos,Patrícia Lima de Souza; Lima,Roberta Samara Nunes de; Silveira,Maria Priscilla Celestino; Fagundes,Jailson Lara; Carnelossi,Marcelo Augusto Gutierrez; Reis,Fabrício de Oliveira. |
| Abstract: The objective of this work was to evaluate the effects of CaO-based particle film on the physiological parameters of cowpea (Vigna unguiculata) subjected to water restriction. Plants were subjected to two levels of soil moisture and three concentrations of the film, as follows: control, without film + 100% crop evapotranspiration (ETc); without film + 50% ETc; 5% CaO + 50% ETc; 10% CaO + 50% ETc; 5% CaO + 100% ETc; and 10% CaO + 100% ETc. Plants treated with 50% ETc remained stable with the application of 10% CaO particle film and showed high photosynthetic assimilation of CO2 (32 μmol m-2 s-1), moderate transpiration (5.6 mmol m-2 s-1), maintenance of chlorophyll content, and greater intrinsic water-use efficiency (IWUE, 226.65 μmol mol-1) and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vigna unguiculata; Calcium; Gas exchange; Water deficiency. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102201 |
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| Sousa,Bráulio Maia de Lana; Rizato,César Augusto; Fagundes,Jailson Lara; Fontes,Pryanka Thuyra Nascimento; Backes,Alfredo Acosta; Oliveira Júnior,Luiz Fernando Ganassali de; Cruz,Natan Teles; Nascimento,Carlos Souza do. |
| Abstract: The objective of this work was to evaluate the tillering dynamics of 'Suvernola' digit grass (Digitaria eriantha) when subjected to different defoliation frequencies. Four defoliation frequencies (interval among harvests) were evaluated - very high, when the grass reached 25 cm in height; high, 35 cm; medium, 45 cm; and low, 55 cm - in two seasons of the year, with higher and lower insolation, from January 2015 to January 2016. A randomized complete block design with four replicates was used. The increase in defoliation frequency increased the number of generations and the appearance, mortality, and density rates of tillers, besides decreasing their survival rate, without changing population stability. At the time of lower insolation, tiller... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Digitaria eriantha; Harvest height; Pasture persistence. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000104303 |
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