Abstract
The study aimed to improve fruit set and plant performance to increase tomato productivity by studying the effect of plant growth regulators on tomato plants (Lycopersicon esculentum). A specific experiment has been carried out to study the effect of plant growth regulators Hemo bles (humic acid, 850g/kg) at applied doses (250, 500 and 700 ppm) and Magictone (naphthalene acetic acid and naphthalene acetamide, 5…12.5 g/kg) at applied doses (250, 500 and 700 ppm) on growth and physiological characteristics of tomato plants (Big Beef F1). The experimental design was a Complete Randomized Blocks Design. Both Hemo bles and Magictone were applied three times (spraying on plants at 30 days after planting (DAP), 60 DAP and 90 DAP). The obtained results showed that, applying Ener-850 humic acid caused the highest significant plant height (264.6 cm), number of leaves/plant (45), stem diameter (1.9 cm) and fruit weight (137 g) during the two seasons. In addition, applying Magictone resulted in the highest significant flower number (48.1), fruit number (35.1) and flower clusters number in the plant (13.6). Additionally, humic acid significantly increased dry weight (75.1 g) of arial parts with improving of tomato fruit quality via enhancing the concentrations of ascorbic acid, level of vitamin C and carotenoid content. The results were analyzed using one-way analysis of variance (ANOVA) followed by Tukey’s HSD test with α = 0.05 with the help of MINITAB (v. 19.0) program.
Highlights
Tomato Solanum lycopersicum belongs to the family Solanaceae
Our research aims at improving plant performance, fruit set and yield of tomatoes by studying the effect of plant growth regulators on tomato plants (Lycopersicon esculentum), using different new types (Magictone and Hemo bles as growth regulators) on Big Beef F1 tomato hybrid
Our results agree with [11], who reported that Humic Acid (Hemo bles) increased absorption of nutrients by plants and improved the permeability of membranes of root cells to tomato cultures
Summary
Tomato Solanum lycopersicum belongs to the family Solanaceae. Tomato is the most important vegetable crop in both open field and greenhouses [1]. There are new, but chemically unrelated compounds with a similar hormone Most of these chemical or natural substances, have not been studied for their effect on plants; especially vegetables and fruits that enter directly into the human daily diet such as tomatoes, which occupies the fourth rank in terms of worldwide production with approximately 5 million ha, as a harvested area produced 170.75 million tones according to FAO statistics’ database [5]. Tomato is an important condiment in most diets and a very cheap source of vitamins and nutrients that are very good for the human body. It protects the body against diseases [6]. Our research aims at improving plant performance, fruit set and yield of tomatoes by studying the effect of plant growth regulators (synthetic and natural) on tomato plants (Lycopersicon esculentum), using different new types (Magictone and Hemo bles as growth regulators) on Big Beef F1 tomato hybrid
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