Jan-March, 2020


Air Pollution Effects on Vegetative Growth, Fruit Quality and Mineral Composition of Washington Navel Orange

Hala M. El-Khayat and Gehan R. Zaki

ABSTRACT: The present study was conducted during 2017 and 2018 seasons to investigate the effect of air pollution on vegetative growth, fruit quality and mineral composition of seventeen years old Washington navel orange (Citrus sinensis) budded on sour orange and growing in a private orchard located at El-Tarh, Behera governorate, Egypt . Four sites (250, 500, 750, 1000m) apart from Abou Keer Electricity company and a control site in Zahara Kafr ELdoar at a distance more than 35 km were selected . The data for air analysis indicated that control site gave the lowest NO2, O3, TSP (Total suspended particles), Pb, Ni, Cd and Cr whereas site one gave the highest values. Also, results showed that plants in control site gave significantly higher canopy, height and trunk increment, Leaf area, vitamin C, total soluble solid, acidity, juice Volume, reduced sugar, non reduced sugar, total sugar, fruit diameter and fruit number, fruit and leaf nitrogen, phosphorus, potassium, leaf total chlorophyll and protein content and the lowest heavy metals content (chromium, nickel, cadmium and lead) in leaf and fruit than other sites. As well as these parameters increased by increasing the distance from the pollutant source whereas heavy metals decreased. Fore thus, it can be recommended to avoid adhesive plantings less than 0–1000 m distances from the pollutant source due to heavy metals contamination in order in order to preserve both agriculture and environment.

[ FULL TEXT PDF 1-13 ] DOI: 10.36632/ije/2020.9.1.1