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Saving water, sustain soil fertility and adjust rhizosphere microclimate the main targets to obtain, which, considered as main factors herein investigation. Current investigation was conducted under modified greenhouse to indicate the effect of two main factors on growth, productivity and saving amount of water irrigation of chili pepper (Capsicum annuum L. Bima F1). The first is three types of organic mulch i.e., rice straw, bagasse and plant compost compared to bare soil (as control). When, the second is three irrigation intervals (every day “as a control”, every two days and every three days). Finally, interaction between both studied factors was considered. Seedlings were transplanted on 1st February during both growing seasons in 2021and 2022. Experiment was held on at a private farm located at Kilo No. 80 Cairo Ismailia road in split plot design with three replications. Compost soil mulching significantly increased studied characteristics related to vegetative growth and/or crop yield and its components. Another significant enhancement resulted from irrigation every two days. Contrasting, interaction between compost mulching and three days irrigation interval presented superior enhancement through all studied characteristics. Amount of saved water were estimated by (81.276 and 112.032) and (89.292 and 123.072) cubic meters under every two days and every three days irrigation intervals; during first and second season respectively. Financial study proved the compost mulch + irrigation every three days treatment achieved the highest values from revenues, net return, percentage of net return on the invested pound and net return per feddan.