Abstract
ABSTRACT Planting sweet potato branches with the appropriate bud number and disposition, below and above ground, can favor vegetative growth and yield that better fit the marketable standards. This study aimed to explore the influence of the number of buds and their distribution ratio, above and below ground level, on the agronomic and marketable components of sweet potato tuberous roots. The experiment was carried out in a randomized complete block design with three replications. The treatments were arranged in a factorial scheme (3 x 5), with 2, 4, and 8 above-ground buds combined with 2, 4, 6, 8, and 10 below-ground buds. Branches from the UZBD 06 accession (Canadense standard) were used. Vegetative, productive, and marketable traits of roots were evaluated. The use of branches with a greater number of buds above and below ground increased shoot dry biomass. Planting seed branches with 8 buds above and 8 buds below ground provided a greater number and production of marketable roots. The use of 10 buried buds increased root number and yield in the 150-450 g marketable classes, which the consumer market values the most.
Highlights
O plantio de hastes de batata-doce com o número e disposição adequados de gemas, abaixo e acima do solo, pode favorecer o crescimento vegetativo e a produção que melhor atendem aos padrões comercializáveis
Being a rustic plant, originated in Central America, sweet potato is widely adapted to various soil types, in addition to being tolerant to drought and high temperatures, which allow its cultivation in different regions of the world (Santos Junior et al, 2020; Teshome et al, 2020)
When farmers plant sweet potato seed branches based on vine length, they disregard that bud number and disposition in the ground can affect plant survival, arrangement in the field, and growth and productive performance (Beyene et al, 2015)
Summary
O plantio de hastes de batata-doce com o número e disposição adequados de gemas, abaixo e acima do solo, pode favorecer o crescimento vegetativo e a produção que melhor atendem aos padrões comercializáveis. O uso de ramas com maior número de gemas acima e abaixo do solo aumentou a biomassa seca da parte aérea. O plantio de ramas com 8 gemas acima e 8 gemas abaixo do solo proporcionou maior número e produção de raízes comercializáveis. One way to improve sweet potato yield and quality is to adopt appropriate management techniques in the production fields (Yan et al, 2017) Among these techniques, the use of proper propagation structures may be the first and most important step in this process. When farmers plant sweet potato seed branches based on vine length, they disregard that bud number and disposition in the ground can affect plant survival, arrangement in the field, and growth and productive performance (Beyene et al, 2015)
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