Efeito da irrigação, posição de plantio e aplicação de silício sobre a cultura do alho na Serra Gaúcha

Abstract

The cultivation of garlic is widely distributed in the Serra Gaúcha region, being the region with the highest production in the state of Rio Grande do Sul. There is little information relative to the management of dripping in garlic, as well as the influence of the planting direction of the bulbils in soil in the development of the culture. Silicon is being used in garlic as an auxiliary fertilizer, but it is necessary to study the optimal dose, viability, and the increase in culture yield. Thus, this study aimed to verify the effect of different dripping regimes based on the evapotranspiration and empirically, evaluate the development of the plants that germinated under different planting positions, and observe the physiology of the plants according to the different doses of silicon applied to the soil. The experiment was carried out in a private property in the municipality of São Marcos, RS. The experimental design was of randomized blocks, with four repetitions in each treatment. The `San Valentin? garlic cultivar was used. The parameters evaluated were plant height, stalk height and diameter, germination percentage of the bulbils, and average bulb mass. The observed results indicated that dripping induced higher plant heights when it was carried out based on evapotranspiration; planting with the bulbils face up have had the smaller germination time and the highest average bulb mass; the application of silicon at the highest dose (800 kg?ha-1) increased the average bulb mass by approximately 18%. [resumo fornecido pelo autor]