Diagnostic leaf for evaluation of the nutritional status of bean

Revista Brasileira de Engenharia Agrícola e Ambiental

Hernandes, Amanda¹  Natale, William¹  Souza, Henrique A. de²  Barbosa, José C.¹  Romualdo, Liliane M.³  Rozane, Danilo E.¹ 

[1] UNESP, Jaboticabal;EMBRAPA CAPRINOS E OVINOS, Sobral;USP, Pirassununga

关键词: Phaseolus vulgaris;    liming;    boron    INTRODUÇÃOÉ inquestionável a importância do feijão na alimentação dos brasileiros;   

DOI  :  10.1590/S1415-43662011001200005

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

The bean is a nutrient demanding plant, either due to the small and shallow root system or due to the short cycle. A study with doses of lime and boron was conducted and correlations were made between two types of leaf (+1 and +3) of the bean with the contents of these elements in plants and production, aiming to establish the most appropriate leaf for diagnosis of nutritional status. The experiment was conducted in greenhouse conditions employing bean seeds cv. BRS Talismá. Lime rates considering the saturation of bases (70%), were calculated as zero, half the standard dose, dose to increase V = 70% (default), one and a half and twice the standard dose, while the boron amounts used were: zero, 0.6, 1.2, 1.8 and 2.4 mg B dm-3. At the time of flowering, diagnostic leaves +1 and +3 (mature leaves from the apex) were collected along with sampling of a plant (aerial part) per pot and the measurement of production. Through correlations it was verified that nutrients, calcium, magnesium and boron in the leaf +3 showed higher correlation coefficients with levels in the plant and production data.

【 授权许可】

CC BY-NC