نوع مقاله : مقاله پژوهشی
نویسندگان
1 استادیار بخش تحقیقات شیمی، حاصلخیزی خاک و تغذیه گیاه؛ موسسه تحقیقات خاک و آب؛ سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران
2 کارشناس بخش تشکیل و طبقهبندی خاک؛ موسسه تحقیقات خاک و آب؛ سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The goal of any greenhouse owner is to adopt strategies that can maintain the plant's yield under temperature stress conditions. The aim of this study was to investigate the effect of different levels of potassium salicylate C7H5KO3 (0, 0.5, and 1 mM) and potassium silicate (0 and 4 parts per thousand (ppt)) on the yield and nutritional status of greenhouse cucumber (Cucumis sativus) under cold stress conditions (in the temperature range of 15-17 ͦC). This experiment was conducted as factorial arrangement based on a completely randomized design with 3 replications under greenhouse condition in Karaj, Iran. The results showed that the treatments significantly affected the concentration of nitrate and nutrients in the plant tissue, quality, and yield of cucumber. Also, simultaneous foliar application of potassium salicylate and silicate significantly affected the total yield and marketable yield of cucumber. The highest increase in total yield and marketable yield compared to the control (94.91% and 96.01%, respectively) were measured in 0.5 mM potassium salicylate treatment. Also, concentrations of N, B, and Mn in leaf significantly increased compared to the control (P<0.05). Furthermore, compared to the control treatment, the spray treatments significantly reduced nitrate content of leaf dry matter: 11% in 1 mM potassium salicylate+4 ppt potassium silicate and 78% in 0.5 mM potassium salicylate+4 ppt potassium silicate. Generally, the findings of this study showed that application of potassium salicylate and potassium silicate can increase the yield and promote the marketable yield of greenhouse cucumber under cold stress conditions.
کلیدواژهها [English]