<b>Plant arrangement on Tannia (<em>Xanthosoma mafaffa</em> Schott) yield</b> - DOI: 10.4025/actasciagron.v27i3.1400

Abstract

This work aims at evaluating yield capacity of tannia under different arrangements and spaces among plants. This was done in order to offer a new productive alternative for producers. Treatments were three and four rows per plot and three spaces among plants (10, 15 and 20 cm) arranged in a 2 x 3 factorial scheme in a randomized experimental block design, with four replications. Cuttings for planting were small cormels with mass of 1.55 g (average of 1200 rhizomes). Harvest occurred 313 days after planting. The highest total yields of rhizomes and cormels were from plants that were cultivated under three rows per plot and with spaces of 10 cm among plants and under four rows and 15 cm. Average of diameters, length and fresh mass of corms and cormels from big, medium and small classes of plants that were cultivated under three and four rows per plot showed characteristic values for each type of rhizome. The highest fresh mass of seed-rhizome used for planting was under four rows and with space of 10 cm among plants (409.20 kg ha^-1) and the smallest was under three rows and 20 cm among plants (153.45 kg ha^-1). The highest total yields (7.02 t ha^-1), net yield (6.74 t ha^-1) and non-commercial rhizomes (4.06 t ha^-1) were from treatment with four rows and 15 cm among plants and of commercial rhizomes were from treatments with four rows and 10 cm among plants (2.97 t ha^-1) and with three rows and 20 cm among plants (2.90 t ha^-1). However, the smallest yields were from treatment with four rows and 20 cm among plants (4.48; 4.27; 1.61 and 2.66 t ha^-1).