تأثير عدة تراكيز ورشات متعددة من السماد البوتاسي (For Max)‎ في نمو و حاصل نبات الباذنجان Solanum melongena L. المزروع داخل البيوت البلاستيكية

Abstract EN

The experiment was carried out in a plastic house belongs to College of Agriculture-University of Kufa during the growing season 2010 -2011.

The aim was to study the effect of different concentrations and repeated spray of Potassium fertilizer (For Max) and the treatment interaction on growth and yield of Egg plant.

The experiment had comprised twelve treatments; four levels of concentrations of Potassium (For Max) fertilizers (6, 4, 2 and 0.0 gm.

L-1) sprayed on plant’s foliage in three intervals (one spray, two sprays and three sprays).

The adopted experimental design was (R.C.B.D.) in three replicates.

The mean differences were analyzed using L.S.D.

at the probability level 0.05.

The results demonstrated that spraying Potassium fertilizer and spray frequency improved the vegetative growth parameters (plant height, total leaf number, leaf area and total vegetative dry weight) yield parameters (plant fruit number, one fruit weight, one plant yield and total yield) and the qualitative fruit characteristics (Potassium nutrient content) during the growing season.

The growth was improved with increasing the fertilizer concentration and spraying frequency.

The interaction between the studied parameters showed significant difference.

The treatment that was sprayed three times with concentration 6 mg.

L-1 of the Potassium fertilizer gave the highest values for the all tested characteristics (113.20 cm.plant-1, 69.22 leaf.plant-1, 5991.33 cm2.plant-1, 188.21 g.plant-1, 29.19 fruit per plant, 174.93 g per fruit, 5.11 kg.plant-1, 19.71 kg.m2 and 4.05 %) respectively compared to the interaction treatment (one spray and distilled water treatments) which gave lower values for the studied characteristics.