Nutritional water productivity of orange-fleshed sweet potato (Ipomoea batatas var. Bophelo) storage roots

This data was collected from a field experiment conducted during two consecutive seasons (2013/14 and 2014/15) at the Agricultural Research Council, Vegetables and Ornamental Plants, Pretoria, South Africa. The experiment had a 2×2×2 factorial design; factors were irrigation regimes (W1- well-watered regime; W2- supplemental regime), soil fertilisation [F1 - 100% N, P, and K application; F2 (control) - 0% N, P, and K application], and vine harvest (H1 - no vine harvesting; H2 - vine harvesting every 4 weeks). W1 means keeping soil water content (SWC) above 30% of plant available water and W2 was supplemental irrigation; if it did not rain for four weeks and soil water content reached a depletion of 80%, we irrigated back to 50% of plant available water

本数据集采集自南非比勒陀利亚农业研究委员会蔬菜与观赏植物研究所于两个连续种植季（2013/14和2014/15）开展的田间试验。该试验采用2×2×2析因设计，所设置的试验因子分别为灌溉制度（W1为充分供水制度；W2为补充灌溉制度）、土壤施肥处理[F1为100%氮（N）、磷（P）、钾（K）施用量；F2（对照组）为0%氮、磷、钾施用量]以及藤蔓采收处理（H1为不进行藤蔓采收；H2为每4周采收一次藤蔓）。其中W1指维持土壤含水量（SWC, Soil Water Content）高于植物有效含水量的30%；W2为补充灌溉模式：若连续4周无降雨且土壤中植物有效含水量耗竭80%，则将其灌溉至植物有效含水量的50%