Effect of Soil Mulching and Spraying with Naphthalene Acetic Acid on Growth and Yield of Broccoli

Abstract

Abstract The field experiment was carried out at the research station of the College of Agriculture / University of Anbar between 33.4538 East and 43.3270 North lines. The experiment included using each of the four types of soil mulching (without mulching, black mulching, yellow mulching, and transparent white mulching) and spraying with naphthalene acetic acid naphthalene (without spraying, spraying with a concentration of 50 mg L, spraying with a concentration of 100 mg L, spraying with a concentration of 150 mg L) in some characteristics of Broccoli Remind the name of hybrid. The research was applied using a randomized complete block design (RCBD) factorial experiment with three replications for each treatment. The results showed that black mulching was superior to the rest of the Types of mulches, which gave the best results in terms of plant height, floral head circumference, leaf length, head weight, 50% flowering rate, and TSS (79.193 cm, 61.066 cm, 64.069 cm, 1.025 kg plant−1, 59.667 days, and 12,140) sequentially compared to the control treatment, spray treatment with acetic acid naphthalene at a concentration of 100 ml gave the best values through plant height, which reached (81.453 cm), floral head circumference, (61.969 cm), leaf length (62.547 cm), head weight (1.045 kg), flowering 50% (59.833 days), TSS (12.073) compared to the control treatment