Browsing by Author "Castro Gallardo, Fernando Osvaldo"
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Thesis EFECTO DEL PORTAINJERTO INIA SOBRE LA PRODUCTIVIDAD Y CONTENIDO MINERAL DEL TOMATE LIMACHINO ANTIGUO (SOLANUM LYCOPERSCUM MILL) CULTIVADO BAJO CONDICIONES DE INVERNADERO EN LA REGIÓN DE VALPARAISO, CHILE(2016) Castro Gallardo, Fernando Osvaldo; Departamento de Industrias; Martinez, Juan PabloThe research on the nutrition and fertility of tomato rootstock has not been developed in Chile. The local tomato varieties with good organoleptic and sensory characteristics (taste and aroma) are being very demanded by consumer, but they have some post-harvest problems. Our proposal considers the implementation of grafting management in the Old Limachino Tomato in order to resolve the aforementioned problems, since some studies indicate that rootstock usage leads to roots' increased absorption of nutrients from the soil. Therefore, this investigation posits that the old Limachino tomato (Solanum lycopersicum Mill.) grafted onto INIA rootstock exhibits greater nutrient uptake from soil (N-P-K-Ca-Mg and Na) than the old Limachino tomato grafted onto itself. Accordingly, this study intended to determine the effect of the INIA graft on growth, productivity, nutrient content and uptake (N, P, K, Ca, Mg, and Na) of the Old Limachino Tomato cultivated under cold greenhouse conditions. The trial took place at the campus of INIA-La Cruz, in Quillota province, La Cruz, Valparaíso region. There were two treatments: T1 (self-grafted Old Limachino Tomato) and T2 (Old Limachino Tomato grafted onto INIA rootstock), with a statistical design of six completely randomized blocks. No treatment effect was observed in fresh and dry biomass area growth, nor was it observed in mineral content in fruit, leaf, or stem. Nevertheless, a tendency toward greater dry biomass was detected in relation to fresh biomass due to treatment effect (a decrease in succulence). The graft effect on nutrient uptake showed a significant increase in N, P, and K in fruit, leaf, and stem, where K uptake in the tomato fruit was most notable. A greater uptake of Ca and Mg was produced in leaf and stem than in fruit. Therefore, we conclude that the nutrient uptake levels in plants grafted onto INIA rootstock are different from and superior to those in auto-grafted plants, suggesting a need for different fertilizer dosing management.
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