@article{LEAL-AYALA_SANDOVAL-VILLA_TREJO-TÉLLEZ_SANDOVAL-RANGEL_CABRERA-DE LA FUENTE_BENAVIDES-MENDOZA_2021, title={Nitrogen form and root division modifies the nutrimental and biomolecules concentration in blueberry (Vaccinium corymbosum L.)}, volume={49}, url={https://notulaebotanicae.ro/index.php/nbha/article/view/11998}, DOI={10.15835/nbha49111998}, abstractNote={<p>Blueberry (<em>Vaccinium corymbosum</em> L.) continues to gain importance in the international market due to its effects on the prevention of human diseases. This leads to the need to optimize the production and quality of the fruit. The present research evaluated the effect of NO<sub>3</sub><sup>-</sup> and NH<sub>4</sub><sup>+</sup>, using the split roots technique, in the nutritional status, photosynthetic pigments and total sugars in blueberry leaves. A completely random experiment was established with six greenhouse treatments: three under homogeneous root conduction (HR) and three with split roots (SR). The concentration of N, P, K, Ca, Mg, S, Fe, Cu, Zn, Mn, B and Na, chlorophyll a (Chl <em>a</em>), chlorophyll b (Chl <em>b</em>), carotenoids (Car) and total sugars were evaluated in the leaves. The exclusive supply of NH<sub>4</sub><sup>+</sup> led to the largest accumulation of N, P, Mg, S, Cu, Mn and B, compared to plants treated with NO<sub>3</sub><sup>-</sup>. The Chl<em>a</em> and total sugars were higher with NH<sub>4</sub><sup>+</sup> compared to NO<sub>3</sub><sup>- </sup>nutrition. The supply of N separately (SR) had no positive effects on the evaluated variables, however, the SR with half of N, in the form of NH<sub>4</sub><sup>+</sup>, compared to the non-SR with full application of N, has no differences in N-leaf concentration, which implies a higher use in the uptake or accumulation of this macro element in plant. <em>V. corymbosum</em> L. with split root and half of N in the form of NH<sub>4</sub><sup>+</sup>, doubled the N use efficiency, as it matches in yield the complete supply treatment of N-NH<sub>4</sub><sup>+</sup> without root division.</p>}, number={1}, journal={Notulae Botanicae Horti Agrobotanici Cluj-Napoca}, author={LEAL-AYALA, Oliver G. and SANDOVAL-VILLA, Manuel and TREJO-TÉLLEZ, Libia I. and SANDOVAL-RANGEL, Alberto and CABRERA-DE LA FUENTE, Marcelino and BENAVIDES-MENDOZA, Adalberto}, year={2021}, month={Mar.}, pages={11998} }