Effect of N,P, and K on root yield and nutrient levels in the leaves and roots of rutabagas grown in a greenhouse |
| |
Authors: | L. B. Macleod U. C. Gupta J. A. Cutcliffe |
| |
Affiliation: | (1) Research Station, Canada Department of Agriculture, Charlottetown, P.E.I. |
| |
Abstract: | Summary Experiments were conducted to determine the influence of N, P, and K and of the NP and NK interactions on root yields and tissue concentrations of N, P, and K of rutabagas grown on a sandy loam soil under greenhouse conditions. Root yields were increased by applications of N and K but not by added P. The yield response to N was dependent on K supply. The highest dry matter content in roots was associated with the lowest rates of N and K and the lowest root yields. The N content of tissue at the early vegetative stage increased with increasing rates of N and decreased with increasing rates of P and K. The N content of root tissue at harvest increased at the highest rates of N but was unaffected by rates of P and K. The P and K content of root tissue increased with increasing rates of P and K, respectively. The levels of nutrients in early vegetative tissue associated with optimum yields were about 2.6, 0.24, and 2.0% for N, P, and K, respectively. The corresponding values in the leaf tissue at harvest were about 1.2, 0.12, and 1.5% N, P, and K, respectively. Contribution No.222. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|