Influence of N Source, N Rate, and K Rate on the Yield and Mineral Concentration of Sweet Potato
Open Access
- 1 May 1984
- journal article
- Published by American Society for Horticultural Science in Journal of the American Society for Horticultural Science
- Vol. 109 (3) , 294-298
- https://doi.org/10.21273/jashs.109.3.294
Abstract
‘Jewel’ sweet potatoes [Ipomoea batatas (L.) Lam.] were grown during 2 seasons to evaluate 3 N sources, 3 K rates, and 2 N rates on a sandy loam soil. Nitrogen source did not influence yield; however, NaNO3 significantly increased foliar and root Na concentrations over those obtained with NH4NO3 or Ca(NO3)2. Higher yields were obtained with 140 kg K/ha than with 70 or 280 kg K/ha and 101 kg N/ha than with 202 kg N/ha. No foliar or root mineral concentrations were deficient. Nitrogen, P, Ca, and Mg concentrations were lower in root than foliar tissues.Keywords
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