agronomy Article Modifications Induced by Rootstocks on Yield, Vigor and Nutritional Status on Vitis vinifera Cv Syrah under Hyper-Arid Conditions in Northern Chile Nicolás Verdugo-Vásquez 1 , Gastón Gutiérrez-Gamboa 2,* , Irina Díaz-Gálvez 3, Antonio Ibacache 4 and Andrés Zurita-Silva 1,* 1 Centro de Investigación Intihuasi, Instituto de Investigaciones Agropecuarias INIA, Colina San Joaquín s/n, La Serena 1700000, Chile;
[email protected] 2 Escuela de Agronomía, Facultad de Ciencias, Universidad Mayor, Camino La Pirámide 5750, Huechuraba 8580000, Chile 3 Centro de Investigación Raihuén, Instituto de Investigaciones Agropecuarias INIA, Casilla 34, San Javier 3660000, Chile;
[email protected] 4 Private Consultant, La Serena 1700000, Chile;
[email protected] * Correspondence:
[email protected] (G.G.-G.);
[email protected] (A.Z.-S.) Abstract: Hyper-arid regions are characterized by extreme conditions for growing and lack of water (<100 mm annual rainfall average), where desertification renders human activities almost impossible. In addition to the use of irrigation, different viticultural strategies should be taken into account to face the adverse effects of these conditions in which rootstocks may play a crucial role. The research Citation: Verdugo-Vásquez, N.; aim was to evaluate the effects of the rootstock on yield, vigor, and petiole nutrient content in Syrah Gutiérrez-Gamboa, G.; Díaz-Gálvez, grapevines growing under hyper-arid conditions during five seasons and compare them to ungrafted I.; Ibacache, A.; Zurita-Silva, A. ones. St. George induced lower yield than 1103 Paulsen. Salt Creek induced higher plant growth Modifications Induced by Rootstocks on Yield, Vigor and Nutritional Status vigor and Cu petiole content than ungrafted vines in Syrah, which was correlated to P petiole content.