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Ciência Rural

Print version ISSN 0103-8478

Abstract

ROS, Amarílis Beraldo; TAVARES FILHO, João  and  BARBOSA, Graziela Moraes de Cesare. Sweet potato tuberous roots yield under different soil managementsProdutividade de raízes tuberosas de batata-doce em diferentes sistemas de preparo do solo. Cienc. Rural [online]. 2014, vol.44, n.11, pp.1929-1935. ISSN 0103-8478.  http://dx.doi.org/10.1590/0103-8478cr20121169.

This study aimed to assess the sweet potato tuberous roots yield under different soil managements and harvesting periods. The experimental design was in randomized blocks in split-plot scheme. The plots corresponded to four soil managements: conventional tillage with Urochloa decumbens straw incorporated and making mounds (PCCP), conventional tillage without straw and with making mounds (PCSP), reduced tillage with straw on the soil surface (PRCP) and reduced tillage without straw (PRSP). The subplots were divided in four harvesting periods: 90, 120, 150 and 180 days after planting. The study showed that sweet potato crop has higher total and commercial tuberous roots yields due to higher numbers of total and commercial roots in soil under conventional tillage with (PCCP) and without straw (PCSP). Thus, the conventional tillage is better to the sweet potato crop.

Keywords : Ipomoea batatas; no-tillage; soil conservation; reduced tillage; fresh mass..

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