Impact of foliar application with calcium under different kaolin rates on growth and yield of tomato grown in high temperature condition [electronic resource]

Includes bibliographic reference

Two experiments were carried out at a private farm located in Dimiana village, Belqas District, Dakahlia Governorate, Egypt during the two consecutive summer seasons of 2018 and 2019 to study the effect of different rates of kaolin (0.0, 20, 40 and 60 g /l) in combined with calcium (0.0, 400 and 800 mg/l) on vegetative growth, water relations, leaf chemical composition as well as fruits yield and its quality of
tomato.. The obtained results revealed that the highest values of plant height, leaf area per plant, leaf dry
matter percentage, relative water content percentage, leaf pigments, fruit yield per plant as well as total
marketable yield per feddan, vitamin C and lycopene content of tomato plant were achieved with kaolin at 40 g/l with significant difference comparing the other rates under study. While, increasing kaolin to 60 g/l
decreased the above mentioned parameters during both seasons. Furthermore, increasing calcium rate from 400 to 800 mg/l increased tomato growth and productivity compared to control (untreated plants). In general, it could be concluded that spraying tomato plants with 40 g/l of kaolin combined with 800 mg/l of calcium, showed improvement in vegetative growth parameters, water relations, leaf pigments, fruits yield and its components as well as fruits chemical constituents under Dakahlia Governorate conditions.

Summary in Arabic