تاثير اضافة السماد العضوي الهيوماك برو و كبريتات الحديدوز و الرش الورقي بالسايتوكاينين في تحسين بعض صفات النمو الخضري لشتلات الكمثرى صنف صيفي

Abstract EN

The study was conducted in the wooden canopy of the Department of Horticulture and Gardening Engineering / College of Agriculture / Tikrit University during the 2020 growing season, with the aim of studying the effect of adding three levels to each of the organic fertilizer Humac Pro (0 3 ml 1 liter and 6 ml 1 liter) and ferrous sulfate (0, 20 and 40 Amalgam Fe.

Kg-1 soil) and cytokinin (0, 150 and 300 mg l-1) in improving some vegetative growth characteristics of pear seedlings (summer), the experiment was designed according to the Completely Randomized Block Design (RCBD) (Completely Randomized Block Design) and the number of seedlings per unit was One seedling and three replications, bringing the number of seedlings in the study to 81 seedlings.

The results were analyzed statistically according to the SAS program and the averages were compared using the Duncan polynomial test at a probability level of 5%.

The most important results of the study showed that the treatment of adding Humac Pro organic fertilizer at a concentration of 20% was significantly superior to the characteristics (area of one leaf, leaf area of seedlings, and the content of leaves of relative chlorophyll SPAD, and the two treatments of addition of ferrous sulfate with two concentrations (20 and 40 mg Fe.

Kg-1 soil)) were significantly superior.

As (SPAD leaves relative chlorophyll content) On the other hand, cytokinin foliar spray with concentrations (100 mg L-1) had a significant effect on the trait (increasing the diameter of the main stem)