University of Khartoum

Utilization of Waste Ammonia in the Production of Forage Sorghum (Sorghum bicolor L. Abu Sabeen)

Utilization of Waste Ammonia in the Production of Forage Sorghum (Sorghum bicolor L. Abu Sabeen)

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Title: Utilization of Waste Ammonia in the Production of Forage Sorghum (Sorghum bicolor L. Abu Sabeen)
Author: Ahmed, Ibrahim Abdelmalik Mohamed
Abstract: Two Field experiments were conducted to study the effect of method, rate and time of application of waste ammonia, which resulted as a secondary by- product from petroleum refinery industry at Elgaily, on the growth and yield of forage. The experiments were excuted at the farm of University Khartoum, Shambat (latitude 15 40/ N and longitude 32 32/E) for two consecutive seasons (2007/2008 – 2008/2009). The study aims at taking the advantage of the utilizing for benefiting from this secondary product (liquid ammonia) in agriculture as a source of nitrogen fertilizer and to get rid of it in an environmental safe manner to avoid its negative effects as a pollutant of both air and aquatic environment. The experimental design used was Split-Split block design, replicated thrice. Liquid ammonia was added at different rates (0, 40, 80 kg N ha-1) applied at (5, 10 days after sowing) using three depths of application (surface, 15 cm and 20 cm depth). The liquid ammonia was added to the soil by a machine device designed specifically for this purpose in the Department of Agricultural Engineering workshop, Faculty of Agriculture, University of Khartoum, to reduce the rate of loss of the added hydrous ammonia. The results showed a significant (P≤0.5) effect of the added ammonia on the fresh and dry weights during the course of the experiment in the both seasons. The crop yield was increased with depth of application where the highest yield (depth18 ton ha-1 dry weight) was obtained from plots receiving hydrous ammonia at 20cm depth. This may be due to the reduced losses of ammonia at this depth. The sorghum yield was also increased with increasing rate of hydrous ammonia where the highest yield was recorded from the high rate (80 kg N ha-1) compared with 0 and 40 kg N/ha rate. Plant analysis results showed a significant increase (P≤0.5) in leaf content of nitrogen, phosphorus and potassium in all treatments compared to the control. It is worth of mentioning that, this study revealed the possibility of using this device, effectively, in the field application of ammonia. Moreover, the study pointed out the efficiency of waste ammonia as a good source of nitrogen for crop growth and yield.
Description: 119 Pages
URI: http://khartoumspace.uofk.edu/123456789/16879
Date: 2012


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