The Effect of Some Chemical Compounds and Plants Water Extracts on Inhibiting The Nitrification in The Soil and Wheat (Triticum Aestivuim L.) Growth and Yield

Abstract

A field experiment was carried out in Dhi Qar Governorate, Al-Fadhliya region, for season of 2018-2019. Chemical compounds DMPP, DCD, and ATS as well as aqueous extracts of capers seeds and palm bast, were added to inhibiting the nitrification in the soil, and some of the growth characteristics of the wheat. Three of nitrogen level were added as urea (46% N) fertilizer (100, 150 and 200 kg N per ha). Aqueous extracts of plants were added to the urea fertilizer at a concentration of 100 ml for each kg of fertilizer. The experiment designed used RCBD with three replications. Wheat seeds were sown at 11/15/2018. Soil samples were Collecting from the soil (0-30) cm during the growing season after (10, 20, 40 and 60) days after the fertilization. The amount of ammonium, nitrate and nitrite, were estimated. The results showed that the fertilizer level 150 kg N ha−1 with all extracts and chemical compound treatments were exceeded compared with 200 kg N ha−1 without treatments.

Impact of Humic Substances on Alleviation of Soil Salinity and the Enhancement of Plant Productivity: a review

“…The parameters considered in this study encompassed plant height, leaf area, dry weight, and grain yield. The comparative analysis of the weight of 100 maize grains in relation to the non-addition treatment in their study, Al-Barakat et al (2021) conducted a three-year field experiment to investigate the effects of adding HA at a concentration of 15 kg/ha to clay sand blending soil. The researchers observed notable improvements in various growth parameters of wheat plants, including plant height, number of charred grains, weight of 1,000 grains, grain harvester, and straw harvester.…”

The Effect of Biofertilizers and Seaweed Extract on the Activity of Cellulase Enzyme and β-Glucosidase in Soil Planted with Broccoli Plants

“…It is noted from the results of the table that adding bacterial biofertilizer and organic fertilizer together had a significant effect on the activity of the enzyme, as the combination of bacterial biofertilizer and yellow corn cobs (BO1) recorded the highest rate of enzyme effectiveness, reaching (224.1 and 257.8) µg geq g -1 dwt 24h -1 , followed by the combination that formed from bacterial biofertilizer and rice straw (BO2) (222.3 and 254.4) µg geq g -1 dwt 24h -1 , followed by the combination of bacterial biofertilizer and wheat straw (BO3) (220.8 and 250.3) µg geq g -1 dwt 24h -1 compared to the comparison treatment, the reason may be attributed to the fact that plants treated with organic fertilizers release many compounds during their growth period that attract microscopic organisms, which increases the activity and density of these organisms, especially in the area surrounding the root. These organisms include Pseudomonas fluorescens bacteria, which produce many enzymes [20].…”