2018
DOI: 10.1590/1807-1929/agriambi.v22n5p338-343
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Photochemical efficiency in cladodes of ‘Gigante’ cactus pear cultivated under different spacings and organic fertilization

Abstract: A B S T R A C TThe objective of this study was to determine the photochemical efficiency of 'Gigante' cactus pear cultivated under different spacings and bovine manure doses in the semi-arid region. The experiment was conducted in a randomized block design in a 4 x 3 x 7 factorial scheme, with three replicates. The first factor consisted of four doses of organic fertilization (0, 30, 60 and 90 Mg ha -1 year -1 of bovine manure), the second one, of three spacings (1.0 x 0.5, 2.0 x 0.25 and 3.0 x 1.0 x 0.25 m) a… Show more

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Cited by 6 publications
(9 citation statements)
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“…Studies on 'Gigante' cactus pear have been carried out with several plot sizes measuring 15 (QUEIROZ et al, 2015), 32 (SILVA et al, 2016), 36 (PADILHA JUNIOR et al, 2016 and 32 basic units (BRITO et al, 2018). Nevertheless, based on the findings reported herein, the experimental area can be optimized with a significant reduction in the size and shape of the plot, with further gains in experimental precision by minimizing error and number of sampling units.…”
Section: Relation Between Relative Information and Coefficient Of Variationmentioning
confidence: 94%
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“…Studies on 'Gigante' cactus pear have been carried out with several plot sizes measuring 15 (QUEIROZ et al, 2015), 32 (SILVA et al, 2016), 36 (PADILHA JUNIOR et al, 2016 and 32 basic units (BRITO et al, 2018). Nevertheless, based on the findings reported herein, the experimental area can be optimized with a significant reduction in the size and shape of the plot, with further gains in experimental precision by minimizing error and number of sampling units.…”
Section: Relation Between Relative Information and Coefficient Of Variationmentioning
confidence: 94%
“…This variability was irregular, as no distribution gradient was observed in the direction of the rows or columns. The variability in the productivity of forage cactus pear within the experiment can be justified by different factors, such as the soil heterogeneity index (Figure 2A) (SMITH, 1938), organic fertilization and spacing (PADILHA JUNIOR et al, 2016;DONATO et al, 2017;BRITO et al, 2018), irrigation (DANTAS et al, 2017, cultivation systems and harvest management (AMORIM et al, 2017).…”
Section: Soil Heterogeneity Indexmentioning
confidence: 99%
“…Esta mesma tendência foi observada anteriormente em cladódios de palma forrageira na região em estudo em período chuvoso (BRITO et al, 2018) e evidenciam que em condições amenas de temperatura, alta umidade relativa do ar (Figura 1), portanto, baixo déficit de pressão de vapor, os cladódios de palma forrageira atuam com metabolismo C3 durante a Fase III da fotossíntese CAM. Neste sentido, entre às 6 e 11 h os estômatos estariam abertos absorvendo CO2, mais com baixa perda de água devido às condições meteorológicas do período.…”
Section: Espaçamentounclassified
“…Além disso, os resultados ampliam os conhecimentos existentes sobre a fisiologia da cultura e permite em associação com outros resultados de pesquisa (DONATO et al, 2014;SILVA et al, 2016ab;PADILHA JÚNIOR et al, 2016;DONATO et al, 2017a;BRITO et al, 2018) otimizar as práticas de manejo e elevar os índices produtivos da palma forrageira nas condições edafoclimáticas do semiárido.…”
Section: Espaçamentounclassified
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