The results of the ANOVA showed that all N fertilizer treatments had a highly significant effect on all leaf macronutrient contents except on those of LPC, in which case the effects were non-significant and significant in 2022 and 2023 seasons, respectively.
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The co-application of nitrogen and phosphorus improved nutrient uptake and productivity of Ipomoea batatas plants grown in saline-calcareous soils.
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