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The objective of this research was to study of the correlation between RGB colour indicators and lead concentration in leafy plants. Cabbage and lettuce crops were watered with 3 levels of Lead Pb-contaminated (2.4 and 6 mg/lit). To distinguish the heavy metal contamination and their impact on vegetative characteristics for plants, the results showed with the levels of poisoning (0,2,4, and 6 mg/lit) showed the maximum value of Hue and vegetative were 0.76. and 0.032, also showed the minimum value for the same indices were 2.15 and 1.51. Also with the levels of poisoning (0,2,4, and 6mg/lit) showed the maximum value of simple red-green ratio and Green-red vegetation index was 1.61. and 0.23, also showed the minimum value for the same indices were 1.28 and 0.12. for Cabbage crops while for lettuce the results showed with the levels of poisoning (0, 2, 4, and 6 mg/lit) showed the maximum value of Hue and vegetative were 0.71. and 0.027, also showed the minimum value for the same indices were 0.41 and 0.024. Also with the levels of poisoning (0,2,4, and 6 mg/lit) showed the maximum value of simple red-green ratio and Green-red vegetation index was 1.65. and 0.43, also showed the minimum value for the same indices were 1.6 and 0.2. Linear regression analysis was performed on the equations to predict the monitoring Hue and vegetative and simple red-green ratio and Green-red vegetation index The red, green, blue band and intensity, the simple blue-green ratio addition to visible atmospherically resistant index simple green leaf and normalized greenblue difference index The RGB-based vegetation index 2 and RGB-based vegetation index 3 at different poisoning levels. The existence of a strong relationship between them and contains a high coefficient of determination. [ABSTRACT FROM AUTHOR]

This study demonstrated the possibility of using the digital image model and Detect The RGB Colour Vegetation Indicators for Cabbage and Lettuce Crop under nitrogen deficiency and water deficiency. For cabbage, the results show the relationship between the vegetation indicators based on colour indicators and the different fertilization levels of cabbage crops, which were at level (50 ETC), indicating that the Hue index and vegetative reached their heights indicators in the fourth level of fertilization (150%) respectively, which amounted to 2.23 and 2.03. While their minimum indicators were the third level of fertilization and amounted to 2.10 and 0.64 respectively. For Lettuce, the results demonstrated the correlation between the color indicators and the fertilization level (0%), which was at level (100% ETC), during the third stage of irrigation. The simple red-green ratio, green-red vegetation index, and visible atmospherically resistant index all reached their maximum indicators on irrigation, amounting to 0.9, 0.84, and 1.07 respectively, while the simple blue-green ratio, green leaf was increasing until it reached 0.22, 0.73, then followed by the normalized green-blue difference whose maximum indicator reached 0.67 in the same period. As a result of irrigation, the RGB-based vegetation indexes 2 and 3 attained their maximum indicators, which were 5.56 and 6.74, respectively. After watering, the Hue index and vegetative indicators attained their respective peak values of 2.23 and 2.81. While their minimum markers were 2.16 and 2, respectively, before irrigation. [ABSTRACT FROM AUTHOR]