In 2022, the correlation between Vstem and Ψ leaf was low and did not reach statistical significance ( p > 0.05).
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The daily minimum leaf turgor pressure can represent the water status of apple trees under drip irrigation.
2
0.0500
0.0500
The sentences
In 2022 and 2023, with the advancement of the growth period, the Ppmax of apple trees showed a trend of first increasing and then decreasing ( Table 1 ), with stable fluctuations in the early stage and sharp fluctuations in the late stage ( Figure 2 ).