Production and profitability of yacon grown in different spatial arrangements

Abstract

The interest in yacon has generated a demand for information that may enhance the production system. Among them are the studies on the different spatial arrangements of planting spacing. Therefore, the purpose of this study was to evaluate the production and yield of yacon cultivated in different arrangements, varying the spaces between the lines and the plants. The experimental design was a randomized complete block design, being the parcels composed by three spacing between lines (0.80, 1.0 and 1.20 meters) and the subplots by three spacing between plants within the lines (0.40, 0.50 and 0.60 meters), distributed in 9 treatments with four replications. At harvest time, evaluations on the accumulation of dry mass in the plant and tuber root production data (number, weight, total productivity, and per class) were made. Profitability indicators were estimated (Gross Income, Operational Profit and Benefit-Cost ratio). The arrangements of 0.80 x 0.40 m and 1.00 x 0.50 m produced higher tuberous roots yield (37.5 and 39.8 t ha-1, respectively), but the arrangement 1.00 x 0. 50 m had a higher profit (US$ 13,854.91) and a better benefit-cost ratio (4.9), which is the most indicted.

Physical and chemical characterization of yacon (Smallanthus sonchifolius) roots cultivated with different doses of potassium fertilization

“…Liming was performed using dolomitic limestone with 96% PRNT increasing base saturation to 70%, with a period of 60 days for planting. For the propagation of yacon, 30 grams rhizophores with three to four buds were used, as recommended by Pedrosa et al (2020) and planted individually on ridges with a spacing of 1.0 m × 0.5 m, as recommended by Carvalho et al (2020).…”