Abstract

Lebanon’s land mostly consists of carbonate rocks, which are generally calcareous. Calcium carbonate is not easily penetrable by vine roots except via cracks. Farmers resorted to the application of the conventional chemical calcium fertilizer. The study compared the effect of a conventional Ca fertilizer to two organic Lithovit Nano-Ca fertilizers on “Tfiefihi” variety. These products were applied once or twice. Shoot length, leaf number and composition, berry characteristics, and production indicators were investigated for two consecutive years. The highest shoot length was induced by the two-time application of Lithovit standard (T6) (346.70 cm). One-time application of Lithovit Amino25 (T3) recorded the highest leaf number (206 leaves). One-time application of Lithovit standard (T5) increased phosphorus in leaves by 0.04%. The lowest sugar content at harvest was detected in T5 and the highest one in T6. The two-time application of Lithovit Amino25 (T4) caused the highest delay in veraison (26 d). T3 recorded the highest acidity content in berry (3.83%). Nano-fertilizer has hastened harvest by around 25 d compared to conventional Ca fertilizer. T3 significantly reduced the cluster weight compared to all treatments and reduced the yield. Lithovit standard could be a beneficial substitution to the conventional fertilizer especially when applied twice.

摘要

黎巴嫩的土地主要由碳酸盐岩组成，一般为钙质。除了通过裂缝，碳酸钙不易被藤蔓根部渗透。农民求助于常规化学钙肥的施用。该研究比较了传统钙肥与两种有机 Lithovit 纳米钙肥对“Tfiefihi”品种的影响。这些产品被应用一次或两次。连续两年对枝条长度、叶数和组成、浆果特性和生产指标进行调查。两次施用 Lithovit 标准品 (T6) (346.70 cm) 可诱导最高枝条长度。一次性施用 Lithovit Amino25 (T3) 记录的叶数最高（206 叶）。一次性施用 Lithovit 标准品 (T5) 可使叶片中的磷增加 0.04%。收获时糖含量最低的是T5，最高的是T6。Lithovit Amino25 (T4) 的两次应用导致了最高的 veraison 延迟（26 天）。T3 记录了浆果中最高的酸度含量 (3.83%)。与传统的钙肥相比，纳米肥料的收获速度加快了约 25 天。与所有处理相比，T3 显着降低了簇重量并降低了产量。Lithovit 标准可能是对传统肥料的有益替代，尤其是在施用两次时。与所有处理相比，T3 显着降低了簇重量并降低了产量。Lithovit 标准可能是对传统肥料的有益替代，尤其是在施用两次时。与所有处理相比，T3 显着降低了簇重量并降低了产量。Lithovit 标准可能是对传统肥料的有益替代，尤其是在施用两次时。