INFLUENCE OF THE PLANTING TIME IN FIELD ON THE TUBERS PRODUCTION OBTAINED FROM SWEET POTATO VARIETIES UNDER THE CONDITIONS OF SANDY SOILS
Journal Title: ISB-INMA TEH AGRICULTURAL AND MECHANICAL ENGINEERING - Year 2017, Vol 0, Issue 1
Abstract
Sweet potato is a plant well suited to tropical and subtropical climates but can grow successfully in a wide range of climatic conditions in which the average of the cold season is not more than 5 months. Taking into account the plant biological requirements the sweet potato culture finds favorable conditions for growth and development in areas with sandy soils in Romania. The researches carried out during the period 2015-2016 at the Development Research Center for Agricultural Plants on Sands, Dabuleni highlights the variety and the planting time in the field as determining factors in plant productivity. The results obtained from five sweet potato varieties (Yulmi, Juhwangmi, Hayanmi, KSP 1 and KSC 1) studied during 3 planting times (10-15 May, 25 May-05 June, 10-15 June) highlight the variety Juhwangmi, planted in the first period with an average production over the two years of 43,750 kg / ha. The delay of planting of sweet potato shoots in the field diminishes the tuber production by 13,068.27 kg / ha. Also, the percentage of the commercial tuber (with a diameter of more than 3 cm) decreases along with the planting delay in the field. The results on the monitoring of the physiological reactions of the sweet potato plant, emphasize the influence of the planting time on the processes of photosynthesis and perspiration depending on the variety.
Authors and Affiliations
Aurelia Diaconu, Reta Draghici, M. Croitoru, I. Draghici, Gh. Cotet, A. Paraschiv
Keywords
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