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The Effect of Cycocel and Different Nitrogen Levels on Performance of Growth, Yield and Quality on Potato (Solanum tuberosum) grown under yala season in upcountry of Sri Lanka

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Author Affiliations

  • 1Department of Crop Science, Faculty of Agriculture, Eastern University, Chenkalady, Sri Lanka
  • 2Department of Crop Science, Faculty of Agriculture, Eastern University, Chenkalady, Sri Lanka
  • 3Department of Crop Science, Faculty of Agriculture, Eastern University, Chenkalady, Sri Lanka
  • 4Agriculture Research and Development Center, Seethaeliya, Nuwaraeliya, Sri Lanka

Res. J. Agriculture & Forestry Sci., Volume 13, Issue (3), Pages 1-10, July,8 (2025)

Abstract

Potato (Solanum tuberosum) is a most common edible and starchy vegetable in Sri Lanka. The growth and tuber formation is influenced by Genetic and Environmental factors such as temperature, photoperiod, shade level and light intensity including other factors like nutrients and plant growth regulators, etc. Nitrogen plays an important role in vegetative growth, yield and quality of potato. Cycocel is the one of growth retardants, reduce plant height and increase the number of tuber and yield of Potato. Chlormequat chloride (CCC), also called cycocel, is one of the synthetic growth retardants, it leads to stem elongation and earlier tuberization in potato. An experiment was carried out to find the Effect of cycocel and different levels of nitrogen on growth and yield of potato (Solanum tuberosum). The pot experiment was conducted in poly tunnel at the Agriculture research and Development center, Seetha-eliya, Sri Lanka in Yala season in upcountry of Sri Lanka from June to September 2020. The experimental was arranged in a factorial completely randomized design includes ten treatments and five replicates. The treatments were control (T1), 100Kg N/ha (T2), 150KgN/ha(T3), 200KgN/ha(T4), 250KgN/ha(T5), Cycocel@200ppm+0N(T6), Cycocel @200ppm+100Kg N/ha (T7), Cycocel @200ppm+ 150Kg N/ha (T8), Cycocel @200ppm+200Kg N/ha (T9), Cycoel @200ppm+250Kg N/ha (T10). Urea was used as a nitrogen source and Albert solution was used as fertilizer. The analysis was carried out using the Minitab 17 software to determine significant difference among the treatments. Treatment means were compared using the Tukey’s test at the P=0.05 (5%) probability level. The experiment revealed that growth, yield and quality of potato were significantly (P<0.05) influenced by cycocel and different nitrogen level. The cycocel and different levels of nitrogen performed interaction effect on tuber yield. Cycocel had exposed significant difference in various N levels on plant height. This study presumed that cycocel and different levels of nitrogen had presented multifarious effect on potato growth, yield and quality.

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