Data/hora: 01/06/2024 09:47:56

Provedor de dados: 	Scientia Agricola	
País: 	Brazil	
Título: 	Nutrient concentrations in potato stem, petiole and leaflet in response to potassium fertilizer	
Autores: 	Reis Jr.,Roberto dos Anjos; Monnerat,Pedro Henrique.	
Data: 	2000-06-01	
Ano: 	2000	
Palavras-chave: 	Nutrient; Nutritional monitoring; Potato.	
Resumo: 	Chemical composition of potato stem, petiole and leaflet were evaluated in response to the application of K fertilizer. Potassium was applied at six different rates (0, 60, 120, 240, 480 and 960 kg ha-1 of K2O), as K2SO4 and was placed in the furrow during planting. Two plants per plot were sampled 48 days after plant emergence to evaluate N, P, K, Ca, Mg, S, Cu, Mn and Zn concentrations in stems, petioles and leaflets of the youngest fully expanded leaf. It is recommended using potato petioles to evaluate the N, P, K, Ca, Mg and Cu status and using potato leaflet to evaluate the S, Mn and Zn status. The stem was not a good indicator of S nutritional status. Petiole N, P and Cu concentrations associated with the maximum tuber yield (30.5 t ha-1, with 353.4 kg ha-1 of K2O) were 25.9 g kg-1, 1.4 g kg-1 and 9.7 mg kg-1, respectively, while, the leaflet S, Mn and Zn concentrations associated with the maximum tuber yield were 4.0 g kg-1, 155.2 mg kg-1 and 59.4 mg kg-1, respectively. This information should be used to build data banks of adequate nutrient concentration at different portions of potato plant and like this, to aid the nutrient diagnosis in potato crops.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162000000200009	
Editor: 	São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"	
Relação: 	10.1590/S0103-90162000000200009	
Formato: 	text/html	
Fonte: 	Scientia Agricola  v.57 n.2 2000	
Fonte: 	info:eu-repo/semantics/openAccess