Time of application of fertilizer nitrogen for potatoes in Atlantic Canada |
| |
Authors: | A. A. MacLean |
| |
Affiliation: | 1. Agriculture Canada Research Station, Fredericton, N.B.
|
| |
Abstract: | Time of application of fertilizer N on yield of Kennebec potatoes, N content of the plant and specific gravity of tubers were investigated on a sandy loam soil. All N in a band at planting was compared with part at planting plus 1 to 4 supplemental sidedressings at 2 to 8 weeks after emergence. Mean yields for the two-year period showed a significant response to 135 kg/ha of N at planting. Supplemental N as a sidedress had no effect on yield provided the seasonal requirements for the crop were applied at planting time. Concentrations of N in the plant increased with increasing rates of N at planting and generally with sidedress applications. Specific gravity of tubers was lower with high rates of N at planting and with sidedress applications in conjunction with 135 kg/ha at planting. It was concluded that from the standpoint of yield and economic considerations, no advantages accrue from split applications under our soil and environmental conditions. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|