When organic-based fertilizer was used, the NO3 − concentration was lower even at higher fertilizer levels.
(1) The highest N fertilizer level (0.32 g N kg−1 soil year−1) significantly decreased leaf area, root length, and specific root area.
LAIDLAW, A. S. and STEEN, R. W. J. (1989) Turnover of grass lamina and white clover leaves in mixed swards continously grazed with steers at a high- and low- N fertilizer level.
In addition, differential root allocation and total plant weight were significantly correlated at both high and low fertilizer levels (P = 0.02, r = 0.39, n = 34 and P = 0.01, r = 0.44, n = 33, respectively).
Total plant weight was significantly greater for barley plants grown in high fertilizer pots across all domestication levels and fertilizer distribution treatments (Table 1; P < 0.0001).
Barley plants were grown in a two-way factorial experiment in which two fertilizer level treatments (low versus high) were crossed with two fertilizer distribution treatments (whole versus split pot).
As suggested by the interaction between domestication and fertilizer level for SRL (Fig. 2; P = 0.0249), wild barley increased SRL in high fertilizer pots, while domesticated barley exhibited a decrease in SRL.
The device measures and tracks light intensity, air temperature, fertilizer level and soil moisture.
Domestication level, fertilizer level, fertilizer distribution, and their interactions were treated as fixed effects.
