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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (7): 51-54.doi: 10.11924/j.issn.1000-6850.casb2022-0260

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Effects of Planting Date and Number of Topping Times on the Yield of Chrysanthemum morifolium ‘Gongju’

ZUO Hongjuan1(), CAO Hui1, ZHANG Hongrui2, WANG Feng3, ZHANG Xiaoshen1()   

  1. 1 Zhengzhou Institute of Agriculture and Forestry Sciences, Zhengzhou 450005
    2 College of Agronomy, Henan Agricultural University, Zhengzhou 450046
    3 Zhengzhou Agricultural Technology Extension Center, Zhengzhou 450000
  • Received:2022-04-06 Revised:2022-08-19 Online:2023-03-05 Published:2023-03-15

Abstract:

To study the influence of cultivation measures on the growth and yield of Chrysanthemum morifolium ‘Gongju’, three planting dates (respectively May 1, May 20 and June 10) were adopted by setting no topping, one time topping and two times topping as the treatments. The plant height, crown width, number of flowers per plant, flower diameter, fresh weight of single flower and yield per plant of C. morifolium ‘Gongju’ were counted during the flowering period, and the effects of different cultivation measures on the yield of C. morifolium ‘Gongju’ were compared. The results showed that: under the treatment of planting on May 20 and two times topping, the growth, flowering indexes and single plant yield of C. morifolium ‘Gongju’ were significantly better than those of other treatments; the crown width, the number of flowers per plant and the yield per plant of planting on May 20 and two times topping were the highest, increased by 26.39%, 8.76% and 14.86%, respectively, compared with those of no topping, but the plant height and the fresh weight of single flower decreased by 16.97% and 8.76% respectively. In summary, planting on May 20 and two times topping is the suitable cultivation measure which can improve the yield of C. morifolium ‘Gongju’.

Key words: Chrysanthemum morifolium ‘Gongju’, cultivation measures, planting date, topping, yield