Effect of Humic Acid, Calcium, and Some Growth regulators on some Quantitative and Qualitative Traits for Yield of Fig cultivar Aswad Diyala (Ficus carica. L)

Abstract

The study was performed on fig trees of( CV. Black Diyala), situated in a private orchard in the Al Mahawil District in Babylon province in 2024, season starting from (March -10-2024) to (Sep. 1-2024) , to study the influence of the addition of humic acid and calcium oxide to the soil at concentrations (0- humic acid 10 ml / L - calcium oxide 5 ml / L - humic acid 10 ml / L + calcium oxide 5 ml / L) as well as spraying growth regulators NAA and GA3 at a concentrations of (0, naphthalene 75, gibberellin 100 mg / L ). Treatment effects were evaluated on quantitative and qualitative characteristics of fig fruits. The factorial experiment was executed in a randomized complete block design (RCBD) ( 4×3) With three replicates. The results showed that adding the treatments individually or jointly led to a significant increase in (fruit diameter, fruit length, fruit weight, total yield, fruit cracking%, fruit fall, and number of days until fruit ripening). Treatment A4B3 gave the highest value for fruit length (3.82 cm), fruit diameter (3.99 cm), and fruit weight (35.31 g). Treatment A3B2 gave the lowest rate of fall (5.78%), and the lowest rate of cracking (6.18%). Treatment A1B2 gave the lowest number of days to ripening (70.00 days),and treatment A4B2 gave the highest total yield (28.91).