Data/hora: 23/09/2024 11:10:52

Biblioteca(s): 	Embrapa Soja; Embrapa Unidades Centrais.	
Data corrente: 	21/06/2018	
Data da última atualização: 	25/01/2019	
Autoria: 	MORAES, M. T. de; LEVIEN, R.; TREIN, C. R.; BONETTI, J. de A.; DEBIASI, H.	
Afiliação: 	CENA/USP; UFRGS; UFRGS; IFPR; HENRIQUE DEBIASI, CNPSO.	
Título: 	Corn crop performance in an Ultisol compacted by tractor traffic.	
Ano de publicação: 	2018	
Fonte/Imprenta: 	Pesquisa agropecuária brasileira, Brasília, v. 53, n. 4, p. 464-477, Apr. 2018.	
DOI: 	10.1590/S0100-204X2018000400008	
Idioma: 	Inglês	
Notas: 	Título em português: Desempenho da cultura do milho em Argissolo Vermelho compactado pelo tráfego agrícola.	
Conteúdo: 	The objective of this work was to determine whether compaction by tractor traffic in areas managed under controlled traffic can be limiting to corn crop, under different tillage systems, in a Typic Paleudult of medium texture. Two experiments were carried out, one in the field over two crop seasons and another in a greenhouse. The treatments consisted of minimum tillage with chiselling; no-tillage subjected to one, three, or six passes of a tractor weighing 3.8 Mg; and an area without traffic. Evaluations were performed for soil physicohydraulic parameters (soil bulk density, penetration resistance, and water retention curve), root and shoot growth, and grain yield. The agricultural traffic increased bulk density, soil penetration resistance, and water content at field capacity. The highest values for soil penetration resistance (1,600 kPa) and bulk density (1.67 g cm-3) in the trafficked soil were not limiting to corn development and increased grain yield for both crop seasons. Tractor traffic of up to six passes is beneficial to corn cultivation, and it increases water availability and corn grain yield.	
Palavras-Chave: 	Crescimento radicular; Produtividade de grão; Sistema plantio direto.	
Thesagro: 	Compactação do Solo; Milho; Plantio Direto; Produtividade; Sistema Radicular; Zea Mays.	
Thesaurus Nal: 	Compacted soils; Corn; Direct seeding; Grain yield; Grains; No-tillage; Root growth; Soil compaction.	
Categoria do assunto: 	--
X Pesquisa, Tecnologia e Engenharia	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/191337/1/Moraes-Corn-Crop-open.pdf
http://ainfo.cnptia.embrapa.br/digital/bitstream/item/178859/1/Corn-crop-performance-in-an-ultisol.pdf	
Registro original: 	Embrapa Soja (CNPSO)	
Exemplares: 	AI-SEDE - (62754-1) - UPE - AP - DD -  -  -  - DIS
CNPSO - (39208-1) - UPC - AP - DD -  -  -  - DIS