| Popis: |
This work aimed to evaluate the effect of applying different doses of fertilizers through fertigation on the production, fruit quality, and nutritional status of the plum tree cultivar 'Gulfblaze'. The experiment was conducted in Antônio Prado, RS, during the 2019/2020 harvest in a 'Gulfblaze' plum orchard established in 2014, with a density of 800 plants per hectare. The treatments applied were T1: Irrigation only, without fertilizer application; T2: Fertigation with 50 % of the dose recommended by CQFS-RS/SC; T3: Fertigation with 100 % of the recommendation; T4: Fertigation with 150 % of the recommendation, and T5: Fertigation at 200 % of the recommendation. A randomized block experimental design was used, with five treatments and three replications, with each plot consisting of 26 plants, and of these, five were used for evaluations. The diameter, length, and average mass of fruits increased as the fertigation doses increased. The firmness of the fruit pulp, as well as the leaf area of the plant, performed better at doses of 150 % and 200 % of the recommended amount. The highest and lowest fertigation doses promoted a higher soluble solids content and SS/AT ratio, indicating an improvement in the qualitative parameters of the plums. |
