تأثير الإضافة الارضية لمستخلص الطحالب البحرية وسماد الــNPK في صفات النمو وبعض المكونات الفعالة لنبات الصبار Aloe vera L.

Effect of ground addition to algae extract and NPK fertilizer on growth characteristics and some active components of aloe vera plant Aloe vera L

Abstract:
The experiment was carried out in the College of Agriculture / University of Karbala in the plant canopy of the Department of Horticulture and Landscape Engineering for the agricultural season (2021-2022) To study the effect of terrestrial application of seaweed extract and neutral NPK fertilizer on some growth characteristics and active components of Aloe vera L. and its quantitative and qualitative production of secondary metabolite compounds The experiment was conducted with two agents, algae extract at three concentrations (0,1,5,3) gm. L-1, and the second agent was the neutral NPK fertilizer with the following concentrations (0,2,4) gm. L-1 , The experiment was carried out as a factorial experiment according to the randomized complete block design (RCBD) system. The plants were distributed in sticks with a diameter of (24 cm) filled with mixed soil and peat moss at a ratio of 1:3. It was distributed with three replicates, each replicate includes 9 experimental units, and each experimental unit includes 5 plants, The comparison was made through the averages of the transactions using the (L.S.D) test, the least significant difference at the level of probability 0.05. The results of the experiment showed the following:
Ground addition of algae extract to aloe vera plant resulted in a significant increase in all vegetative traits when treated with T3 concentration At a concentration of 3g.L-1 plant height 32.11 cm, leaf width 21.45 mm, leaf length 29.96 cm, leaf thickness 10.93 mm The number of leaves is 12.56 leaves. Plant-1, fresh weight 167.78 gm., dry weight of the leaf 55.89 gm. It also had a significant effect on all qualitative characteristics (the percentage of nitrogen 0.37%, the percentage of potassium 1.75%, the percentage of phosphorus 0.081%, the percentage of chlorophyll 34.25%) Aloin content 194.53 µg GM-1, Aloe-emodin 98.9 µg GM-1, cinnamic acid content gave 12.54 µg GM-1, as well as Salicylic Acid 12.77 µg GM-1.
The results showed that the addition of neutral NPK fertilizer to cactus plants at a concentration of (4 g / L-1) in all treatments showed significant differences in all vegetative growth characteristics (plant height (30.60) cm, leaf width 19.50 mm). Leaf length 28.48 cm, leaf thickness 9.86 mm, number of leaves 12.11 leaves. Plant, fresh weight 158.00 g. Leaf length 28.48 cm, leaf thickness 9.86 mm, number of leaves 12.11 leaves. Plant, fresh weight 158.00 gm, dry weight of the leaf 52.53 gm). It also significantly affected all qualitative traits (the percentage of potassium 1.38%, the percentage of phosphorus 0.08%, the percentage of chlorophyll 33.53, the amount of aloin 178.19 µg g-1Also, the highest addition to the amount of Aloe-emodin gave the highest percentage at concentration level 4 and it was 96.2 µg gm-1, the content of cinnamic acid gave 11.15 µg gm-1, and also in Salicylic Acid 12.46 µg gm-1 except for the characteristic of the percentage of nitrogen that did not record a significant difference and was 0.374%.