Data/hora: 22/05/2024 08:45:37

Biblioteca(s): 	Embrapa Meio Norte / UEP-Parnaíba.	
Data corrente: 	29/01/1996	
Data da última atualização: 	29/01/1996	
Autoria: 	SIMON, J. E.; WILCOX, G. E.; SIMINI, M.; ELAMIN, O. M.; DECOTEAU, D. R.	
Afiliação: 	Purdue University.	
Título: 	Identification of manganese toxicity and magnesium deficiency on melons grown in low-pH soils.	
Ano de publicação: 	1986	
Fonte/Imprenta: 	Hortscience, v.21, n.6, p.1383-1386, dec. 1986.	
Idioma: 	Inglês	
Conteúdo: 	Field-grown muskmelons (Cucumis melo var. reticulatus Ser.) and watermelons [Citrullus lanatus (Thunb.) Matsum and Nakai] are sensitive to nutrient stress induced by low-pH soils. Severe foliar injury observed on melons grown in low-pH soils was caused by toxic levels of Mn and/or deficient levels of Mg in the leaf tissue. Manganese toxicity symptoms in muskmelons develop as chlorotic spotting on the adaxial surface of older leaves, with water-soaked rings around necrotic spots on the abaxial surface. In watermelons, Mn toxicity develops initially on older leaves as black-brown speckling on the abaxial leaf surface. Severe vein browning develops with age. Magnesium deficiency develops first on mature muskmelon and watermelon leaves as an interveinal  bronzing, followed by a necrosis and browning  of the interveinal tissue. Muskmelons are more sensitive to both Mn toxicity and Mg deficiency than are watermelons.	
Palavras-Chave: 	Acid soil; Muskmelon; Nutrient stress; Nutrientes; Salt pH; Watermelon.	
Thesagro: 	Citrullus Lanatus; Cucumis Melo; Magnésio; Manganês; Melancia; Melão; Ph; Solo Ácido.	
Thesaurus Nal: 	magnesium; manganese; nutrients.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP)	
Exemplares: 	CPAMN-UEPP - (4838-1) - ADP - SP - -- -  -  - 1996.00023 - DIS