Effect of superabsorbents and irrigation cycle on reproductive growth of rose seedlings

Reducing water losses and reducing irrigation frequency are considered to be one of the basic solutions in agricultural development, the success of natural resource projects, minimizing stresses on seedlings planted in natural areas, and increasing the productivity of soil and water resources. In this regard, one of these methods is the use of superabsorbents. This study was conducted to investigate the effect of superabsorbents on increasing the irrigation interval and the growth rate of rose seedlings at the field level and as a factorial experiment in a completely randomized design with 3 replications. The factors included superabsorbent at 4 levels of 0, 40, 90, and 140 grams and irrigation intervals at 4 levels of 6, 10, 14, and 18 days. The results of the study showed that superabsorbent has a significant effect on increasing the irrigation interval and various growth parameters in rose seedlings. In qualitative parameters, the 40 and 90 g superabsorbent levels showed a positive effect on the number of main branches parameter and did not show a significant effect on the total number of branches and number of flowers parameters. In the irrigation interval factor, the control level and 10 days of irrigation interval had a significant difference with other levels in the parameters of the number of main branches and total number of branches, and increasing the irrigation interval and reducing the amount of water access in the seedlings caused a decrease in the amount of flowering. So that in the parameter of the number of rose, the 10-day irrigation level with different levels of superabsorbent had a significant difference with other levels and even the control irrigation without superabsorbent. Also, the rate of budding of seedlings showed different results in different months.

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