In-Soil Organic Fertilizer and Foliar Use of Salicylic Acid and Sea Algae Extract (Ascophyllum nodosum) on the Growth and Yield of Two Native Pumpkin clones (Cucurbita pep)

To evaluate the effects of organic fertilizer (control, 30 ton/ha cow manure and 15 ton/ha vermicompost) and foliar treatment (control, 50 mgL-1 Salicylic acid (SA), 2CC/Litter alge extract) on the growth and productivity of two native (Tabriz and Esfahan) pumpkin clone, a factorial experiment as randomized complete block design with 3 replications was conducted during the 2018- 2019 under field condition.

The reults showed that plant heights, leaf area, leaves number, total flower number, fruit number, P and K content were effected by the organic feartilizers, and foliar spray with algal extract. P content was affected by the plant clone and the higher amount was belonged to Tabriz. The freash and dry weight plants, total flower number and fruit number affected by the individual effects of organic fertilizer and interactions of year × plant clone. Plant weight was influenced by organic fertilizer × marmarin and SA spray. The yield was impacted by the interactions of year × clone, year ×fertilizer, clone × fertilizer and the individual effects of organic fertilizer. Soil based organic fertilizer with foliar used marmarin and the organic fertilizer × SA increased chlorophyll a and b content. Chlorophyll a content was affected by the year as well as the second year had the more data. Silisium content was responsive to the sole effects of organic fertilizer interaction of clone × organic fertilizer.