Baghdad University: A Day in the Life

Effect of Plant Density and Spraying with Ethephon on Yield and its Components of Sorghum (Var. Bohooth .70)

“…In the autumn season, the increase rate was 16.1% and 19.3%, respectively. The explanation for this is that the increase in grain yield is the result of an increase in the important yield components, such as the yield of one plant, the number of grains per head, and the weight of 1000 grains, and this result agrees with [3 and 12].Figure (10,11) shows the existence of a significant interaction between the plant densities and the concentrations of ethephon, the effect of the spring and autumn seasons. Perhaps the reason is the difference in the relative response of the concentrations in the different plant densities in their effect on the yield.…”

Effect of Agricultural Polymer and Levels of NPK on some Chemical Traits and Availability of some Nutrients, Growth and Yield of Wheat (Triticum aestivum L.)

“…The experiment included four levels of agricultural polymer (P), mixed with soil at levels 0, 37.5, 75.0 and 112.5 kg polymer ha -1 and its symbols P0, P1, P2 and P3, respectively. Table (2) shows the properties of agricultural polymer, five levels of NPK in the amount (0, 25, 50, 75 and 100%) of the fertilizer recommendation and its symbols are (F0, F1, F2, F3, and F4), respectively in the form of urea N 46%) and triple superphosphate (21% P) and Potassium sulfate (41.5% K) [9]. Measure the height of the plant from the area where the stem contacts the soil to the top of the plant, excluding the awn, for five plants, they were taken randomly from each experimental unit, and for all replicates.…”

Effect of Agricultural Polymer and Levels of NPK on some Chemical Characteristics and the Availability of some Nutrients in the Soil and Yield of Wheat (Triticum aestivum L.)

“…Fertilization with NPK had a different effect on decreasing and increasing the electrical conductivity, as the level F3 achieved the lowest average of 2.54 dS m -1 , it was significantly superior to the comparison level F0, which achieved an average of 2.81 dS m -1 , which did not differ significantly with the levels F1 and F2 as they achieved averages of 2.80 and 2.66 dS m -1 respectively, while the F4 level increased the electrical conductivity of the soil significantly with no addition treatment, achieving an average of 3.11 dS m -1 , this may be due to the role of potassium in reducing salinity, reduces the negative effects of salinity resulting from the toxic effects of some ions such as sodium and improves the nutritional balance between nutrients in the soil and plants, enabling the plant to regulate the osmotic pressure [22; 23]. As for the increase in the electrical conductivity values, it may be due to the nature of the saline fertilizer, which may increase the concentrations of ions and then increase the soil salts [24]. The interaction between the agricultural polymer and NPK fertilization had a significant effect on reducing the electrical conductivity value of the soil, the interaction F2P3 treatment achieved the lowest average of 1.35 dS m -1 , while the highest electrical conductivity was obtained when F4P0 treated 4.00 dS m -1 , as for the rest of the transactions, they differed from each other morally.…”