Flowering production of Tagetes patula as affected by maleic hydrazide and paclobutrazol

Document Type : Original Article

Authors

1 Hort. Dep., Fac. of Agric., Minia Univ., Egypt.

2 Agricultural Research and Experiments Center, Minia Univ., Egypt.

3 Department of Horticulture, Faculty of Agriculture, Beni-Suef University, Beni-Suef P.O. Box 62521, Egypt.

Abstract

During two consecutive growing seasons of 2022 and 2023, in the Floriculture Nursery, Department of Horticulture, Faculty of Agriculture, Minia University, this research was under taken to examine the impact of paclobutrazol and maleic hydrazide on vegetative growth (plant height and number of branches) and flowering production per cut and per season (flower diameter, flower stalk length, flower yield, and flower fresh and dry weights) of Tagetes patula plant. Spraying plants with all concentrations of both retardants (maleic hydrazide and paclobutrazol) led to significant reduction of plant height and significantly increased branches number of French marigold plants. In the same time, all above mentioned flowering traits were increased by increasing the concentration of maleic hydrazide and paclobutrazol, except flower stalk length, which was decreased in both seasons. In most cases, the fourth cut was the best in this concern.

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