Abstract
A key aspect of any sulfur (S) availability indicator is its stability throughout the crop cycle. Nine experiments were conducted with the objective to evaluate the stability of the nitrogen (N):S ratio in aerial biomass (W) in spring wheat, and to define the critical curve of S dilution. As the crop cycle progressed, a decrease (P < 0.05) in total N:S was determined. This lack of stability was explained by a lower S dilution in relation to N (P < 0.05). A decrease (P < 0.05) in N accumulation rate in relation to S was obtained as the crop cycle progressed, which points out that S accumulation in relation to N is later. A first approach was determined to the definition of the S dilution critical curve (Sc) from tillering beginning to stem elongation end (Sc = 0.37 W−0.169; r2 = 0.71 and n = 24).
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Claims 4
Claim · model-written summary
Total N:S in aerial biomass of spring wheat decreased as the crop cycle progressed (P < 0.05).
Verbatim
e0“As the crop cycle progressed, a decrease (P < 0.05) in total N:S was determined”
t0“SPRING RED WHEAT”
Claim · model-written summary
The lack of N:S stability was explained by a lower S dilution in relation to N (P < 0.05).
Verbatim
e0“This lack of stability was explained by a lower S dilution in relation to N (P < 0.05)”
t0“SPRING RED WHEAT”
Claim · model-written summary
N accumulation rate in relation to S decreased as the crop cycle progressed (P < 0.05).
Verbatim
e0“A decrease (P < 0.05) in N accumulation rate in relation to S was obtained as the crop cycle progressed”
t0“SPRING RED WHEAT”
Claim · model-written summary
A first approach to the S critical dilution curve from tillering beginning to stem elongation end was Sc = 0.37 W-0.169 (r2 = 0.71, n = 24).
Verbatim
e0“A first approach was determined to the definition of the S dilution critical curve (Sc) from tillering beginning to stem elongation end (Sc = 0.37 W−0.169; r2 = 0.71 and n = 24)”
t0“SPRING RED WHEAT”