Effect of Nitrogen Fertilizer and Some Bio-Stimulants Extracts on Flowering Traits and Fruit Yield Quality of Tomato (Solanum Lycoersicom L.)

Abstract

Two field trials were conducted during two successive summer seasons of 2023 and 2024 at the Experimental Farm of Faculty of Technology and Development, Zagazig University at Ghazala Region, Sharkia Governorate, Egypt to elucidate the effect of nitrogen fertilizer rates as soil application and foliar spray with two bio-stimulants extracts viz, seaweed extracts and dry yeast on growth, and fruit yield of tomato, chemical contents in leaves, flowering traits and fruit quality of tomato cv. Master R.S. treatments included three rates of nitrogen application (0, 50 and 100 kg/feddan) and foliar spray with seaweed extracts (2 g/l) and dry yeast extract (4 g/l). The experiment was laid out in split plot system with three replicates, where the main plot was nitrogen fertilizer rates, and the sub-plot was foliar spray with seaweed and dry yeast extracts. The results indicated that nitrogen at the rate of 100 kg/feddan, seaweed extracts (2 g/l) and their interaction effect between them caused an increase in chemical contents in leaves, flowering traits and fruit quality of tomato cv. Master R.S.

Consequently: it can be concluded that nitrogen at the rate of 100 kg/feddan and foliar spray with seaweed extracts at 2g/l, gave the highest values of chemical contents in leaves, flowering traits and fruit quality of tomato cv. Master R.S.