Phosphorus Placement Effects on Phosphorous Recovery Efficiency and Grain Yield of Wheat under No-Tillage in the Humid Pampas of Argentina

Table 5

Analysis of variance of P recovery (%) at Necochea affected by P rate and soil depth.

ANOVA
Source of variation	>
P rate ()	0.003
Soil depth ()	0.012
×	ns
Average treatments
P rate (μg g soil^−1)	% retention
60	33.2 a
120	28.5 b
Soil depth (cm)
0–10	29.1 b
10–20	32.6 a

Means in the same column followed by the same letter are not significantly different from each other based on the Duncan test (0.05). ns: not significant.