Statistical analysis of water consumption of pepper crop in Karbala Governorate For the period (1993-2022)

Abstract

The research dealt with the statistical analysis of the water consumption of the pepper crop in Karbala Governorate, based on the climate data of the Karbala station for the period (1993-2022), and a statement of the total amount of water lost by the crop due to the evaporation/transpiration process during its growth, and calculated using the (Monteith-Penman) equation of the Food and Agricultural Organizatio To calculate the possible evaporation/transpiration and the effect of climatic elements, water consumption, and pepper water consumption showed a large variation of (42.1) and (198.4) mm, respectively, in the pepper crop growing season extending from the month of (February) to the month of (May). It turns out that the amount of rain falling is small and is not sufficient to rely on it to meet the water needs for irrigating the pepper crop during the months of the agricultural season                         .

The multiple regression analysis shows that there is a positive relationship between the water consumption of the pepper crop and the independent changes (wind speed, actual brightness, maximum temperatures, and the amount of evaporation), as the amount of water consumption increases with the increase in the values ​​of these variables above, and the amount of water consumption decreases with the decrease in the values ​​of these variables above,if it reaches The multiple regression coefficient represents (96%) of the fluctuations that affect the amount of water consumption of the pepper crop in the study area due to the independent variables. As for other factors, the model was not able to account for them if they reached (4%)