تأثير مستويين من البوتاسيوم ومواعيد إضافتهما في مكونات وحاصل حنطة الخبز Triticum aestivum L. صنف أدنه-99

الملخص

A field experiment carried out in the field of higher studies research station
D of the College of Agriculture - University of Baghdad / Jadriya for the winter
season 2015-2016 with the aim to finding the best level of potassium and the best
time to add it and effect the interaction between them to obtaining the highest
yield of bread wheat crop (Triticum aestivum L.) R.C.B.D was used to split-plots
design and three replicates. The main plots included two levels of potassium (100,
150) kg K ha-1, while the secondary plots included eight dates to add the levels of
potassium in combinations as well as the date of comparison (without the
addition of potassium) In four stages of addition and Are (on planting ZGs00,
Tillering ZGs21, Elongation ZGs32,and Booting ZGs49). The results of the
experiment showed that the level of potassium superiority 150 kg K ha-1 in most
of the characteristics of the crop and its components. The number of spikes per
square meter is 321.6 sp. m2, the number of spikes in spike is 20.5, the number of
grains in spike 45.1, the weight of 1000 grain is 41.2 g , the grain yield is 5.99 tons
ha-1,the biological yield 20.03 ton ha-1). Fertilized plants with the potassium level
achieved 100 kg K ha-1. The highest averages in the characteristics of the harvest
guide was 29.8%, the percentage of protein in the grain was 14.5% and the
percentage of carbohydrates in the grains was 78.2%. There was a significant
response among the Factors in most of the studied properties. The highest
response was between potassium Level 150 kg K ha-1 and the Date D5 (1/2 K at
planting ZGs00 + 1/2 K at the onset of the ZGs49 sheath leaf) for the two The grain
yield is 6.77 tons ha-1 and the biological yield is 20.34 tons ha-1.