تأثير إضافة مستويات مختلفة من مولاس الشوندر السكري وماء الجفت في بعض الصفات الشكلية والنوعية لنبات البطاطا

Abstract

The study was carried out by planting the potato variety (Spunta) in the autumn season on 9/22/2022 at the Scientific Research Station - Stakhiris (Rural Lattakia Governorate, an area suitable for potato cultivation). The design followed the complete randomized sectors. The experiment included four treatments of peat water (M0 = 0, M1 = 5.4, M2 = 10.8, M3 = 16.2 L/m2) and four treatments of sugar beet molasses (150 = B2, 75 = B1, 0 = B0, B3 = 225 L/ha). The treatments of molasses and peat water together were 16 treatments as follows (B0M0 /B1M0/B2M0/B3M0/B0M1/B0M2/B0M3/B1M1/B1M2/B1M3/B2M1/B2M2/B2M3/B3M1/B3M2/B3M3).

. This study aimed to continuously supply the soil with organic matter and utilize olive fruit pressing water to improve plant properties and reduce the use of chemical fertilizers, thus reducing production costs. Then, it studied the effect of interaction with the optimal addition rate of sugar beet molasses, considering it an organic intervention that improves soil properties and increases the efficiency of utilization of nutrients. This also affected some morphological and qualitative characteristics of the potato plant.

The results showed the effective and positive impact of the treatments in increasing the leaf surface area, as all treatments outperformed the control treatment, as the leaf surface area in the control treatment B0M0 reached (3398 cm2/plant) and ranged in the remaining treatments between 4126 and 9416 cm2/plant. The effect of peat water was greater than molasses, as the B0M3 treatment outperformed the B3M0 treatment.

The highest value of dry matter percentage was in treatment B3M3, where it significantly outperformed all treatments, except for treatments B2M3-B3M2, where no significant differences were shown compared to the control treatment, and the effect of peat water was also greater than that of molasses.

All treatments were significantly superior to the control treatment in the percentage of starch in tubers, as the control treatment B0M0 reached a value of 9.77%, while the remaining treatments ranged between 10.24-13.98%. The effect of peat water was greater than molasses, as treatment B0M3 outperformed treatment B3M0.

With increasing levels of addition of sugar beet molasses without peat water, the vitamin C content in tubers (mg/kg) increased, reaching the highest value in the B3M0 treatment (10.31 mg/kg), while the greatest effect in increasing the vitamin C content was when adding peat water levels without molasses, reaching the highest value in the

B0M3 treatment (16.65 mg/kg). As a result, we recommend using (225 L/ha of beet molasses and 16.2 L/m2 of peat water) as organic fertilizer when growing potatoes, as it facilitates the quality of tubers and ensures their protein quality.