THE EFFECT OF THE INTERACTION BETWEEN BORON AND MANNITOL ON THE CONTENT OF SOME NUTRIENTS IN CAULIFLOW

A field experiment was carried out at the Agricultural Research Station of the College of Agriculture - University of Anbar in Ramadi - Albu Aithah region during the winter season of 2021. The experiment included 16 treatments resulting from an interaction between spraying four concentrations of boron, which are 0 (without addition), 25, 50, and 100 mg B L-1, abbreviated as (B0, B1, B2, B3) in sequence. In addition to that, four concentrations of mannitol sugar, which are 0, 10, 15, and 20 gm L-1, abbreviated as (M0, M1, M2, M3) in sequence, were also used. In the experiment, a completely randomized block design (RCBD) was used, including three sectors. Each sector contained 16 experimental units. The study was conducted to discover the effect of the interaction between several concentrations of boron and mannitol on the content of nitrogen, phosphorus, potassium, boron, and protein in cauliflower pink discs. The results indicated that spraying boron at a concentration of 50 mg L-1 led to a significant increase in the ionizing ratio of nitrogen, phosphorus, and protein, which amounted to 3.068%, 0.3566%, and 19.16%, respectively. The highest concentration of potassium was 2.946%, and boron reached 21.17 mg kg-1 when spraying boron at a concentration of 100 mg L-1. The results also showed that spraying mannitol sugar at a concentration of 20 g L-1 led to a significant increase in the percentage of nitrogen, phosphorus, and potassium, with 3.241%, 0.402%, and 3.280%, respectively. The concentration of boron in the pink tablets was 18.58 mg kg-1. The nutritional value of cauliflower was highest when spraying boron at a concentration of 50 mg L-1 and mannitol sugar at a concentration of 15 gm L-1 (M2B2). The content reached 3.621%, 0.4377%, 3.337%, and 22.627% for nitrogen, phosphorus, potassium, and protein, respectively, while the highest concentration for boron was at the interaction between spraying 100 mg L-1 of boron and 20 gm L-1 mannitol (M3B3), which reached 23.33 mg B kg-1 dry matter.