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Manganese Nutrition of Sweet Potatoes in Relation to Manganese Content, Deficiency Symptoms, and Growth 1
Author(s) -
Mishra Upendra N.,
Kelley James D.
Publication year - 1967
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1967.00021962005900060027x
Subject(s) - manganese , nutrient , shoot , horticulture , chemistry , dry weight , greenhouse , petiole (insect anatomy) , agronomy , botany , biology , hymenoptera , organic chemistry
Sweet potatoes, variety ‘Allgold’, were grown in nutrient culture under greenhouse conditions at 8 levels of Mn ranging from 0.002 to 0.25 ppm. Maximum weight of roots and shoots were obtained at an Mn concentration of 0.031 ppm in the nutrient solution. Manganese concentration was higher in the blades than in the petioles and roots. Maximum growth was obtained in plants with an Mn concentration between 25 and 60 ppm in the blades and 20 to 30 ppm in the petioles. Growth of sweet potatoes was more closely related to the Mn concentration of the blades than that of petioles or roots. Initial deficiency symptoms were observed in younger leaves having an Mn concentration of less than 25 ppm in the blades and 18 ppm in the petioles. Manganese nutrition had no significant influence on the K, Ca, and Mg concentrations of the roots, petioles, and blades. Phosphorous concentration of the petioles was influenced by Mn nutrition.