Effect of super absorbent polymer, manure and potassium on some physiological and morphological characteristics of pumpkin (Cucurbita pepo) on drought steress

Effect of super absorbent polymer, manure and potassium on the physiological and morphological characteristics of pumpkin (Cucurbita pepo) in drought conditions, split-plot experimental design with three replications in a randomized complete block design, at the Research Station of Sistan Dam located in the city of Zabol implemented. Treatments consisted of three irrigation regimes, to 5, 8 and 11 days of treatment, no use of manure as a source of potassium and super absorbent polymer (control) at a rate of 40 t ha farmyard manure, potassium (k2so4) to the extent 100 kg per hectare to 300 kg per hectare and super absorbent polymer as a minor, was considered. The results showed a very significant effect of treatments on RWC, chlorophyll a, b, chlorophyll, number of branches, the carotenoids, root biomass and root dry weight, respectively. Super Absorbent Polymer greatest impact on the number of branches, chlorophyll a, b and total chlorophyll a.Was obtained. The results of this study, none of the treatments had no significant effect on the amount of chlorophyll fluorescence.