Influence of shade on productivity and nutritional value of urochloa decumbens in silvopastoral systems using different spatial arrangements of eucalyptus cultivars

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dc.creatorClaudinei Alves dos Santos
dc.creatorAlan Figueiredo de Oliveira
dc.creatorElwira Daphinn Silva Moreira
dc.creatorLúcio Carlos Gonçalves
dc.creatorMaria Celuta Machado Viana
dc.creatorMiguel Marques Gontijo Neto
dc.creatorÂngela Maria Quintão Lana
dc.date.accessioned2025-01-23T22:22:30Z
dc.date.accessioned2025-09-09T00:39:56Z
dc.date.available2025-01-23T22:22:30Z
dc.date.issued2023-05-31
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.17138/tgft(11)169-182
dc.identifier.issn2346-3775
dc.identifier.urihttps://hdl.handle.net/1843/79452
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofTropical Grasslands-Forrajes Tropicales
dc.rightsAcesso Aberto
dc.subjectProdução animal
dc.subjectProteção ambiental
dc.subjectFlorestas tropicais
dc.subject.otherChemical composition
dc.subject.otherIntegrated systems
dc.subject.otherIntegration of livestock-forest plantations
dc.subject.otherTropical grasslands
dc.titleInfluence of shade on productivity and nutritional value of urochloa decumbens in silvopastoral systems using different spatial arrangements of eucalyptus cultivars
dc.title.alternativeInfluencia de la sombra sobre la productividad y el valor nutricional de urochloa decumbens en sistemas silvopastoriles utilizando diferentes arreglos espaciales de cultivares de eucalipto
dc.typeArtigo de periódico
local.citation.epage182
local.citation.issue2
local.citation.spage169
local.citation.volume11
local.description.resumoThis study evaluated pasture productivity and nutritional characteristics of Urochloa decumbens in silvopastoral systems (SPS) with different eucalyptus cultivars and spatial arrangements providing differing levels of shade. SPS were arranged to provide 46 % shade (eucalyptus trees arranged in 2 double rows 2 m apart, with trees every 3 m in each row, and 20 m between double rows), 60 % shade (eucalyptus trees arranged in 2 double rows 2 m apart, with trees every 2 m in each row in double rows and 9 m between double rows) and 57 % shade (eucalyptus trees arranged in a single row, with trees every 2 m in the row and 9 m between rows) using eucalyptus cultivars ‘GG100’, ‘I144’ or ‘VM58’. Two full sun pastures treated as managed (soil pH correction and N, P and K fertilizer application) or non-managed (no correction or fertilizer application) were evaluated in addition to the 3 SPS arrangements. Photosynthetically active radiation (PAR) was 1,439 μmol/m2/s in full sun compared with a mean of 715 μmol/m2/s under different SPS arrangements. Leaf area index of U. decumbens was 28 % higher in 46 % shade and lower in all shade arrangements compared with full sun managed pasture. The dry matter yield was 58 % lower in 46 % shade and 86 % lower in 60 % shade compared with full sun managed pasture. The crude protein content in SPS pastures was higher than in the full sun pastures, with higher values in 57 % and 60 % shade. SPS significantly reduced the PAR and forage yield. These results indicate that in systems where the main objective is animal production, spacing between tree rows greater than 20 m should be used to provide sufficient high-quality grass.
local.identifier.orcidttps://orcid.org/0000-0002-1928-6753
local.identifier.orcidhttps://orcid.org/0000-0002-8344-4648
local.identifier.orcidhttps://orcid.org/0000-0002-1716-4744
local.identifier.orcidhttps://orcid.org/0000-0002-0752-4224
local.identifier.orcidhttps://orcid.org/0000-0003-0066-6198
local.publisher.countryBrasil
local.publisher.departmentVET - DEPARTAMENTO DE ZOOTECNIA
local.publisher.initialsUFMG
local.url.externahttps://www.tropicalgrasslands.info/index.php/tgft/article/view/974/565

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