Yield and nitrogen use efficiency of some biosaline agriculture forage plant species under different treated sewage effluent (TSE) irrigation levels | [International Journal of Biology and Biotechnology • 2023]

Author(s):

1. Osman A. Elsharief Abdalla: Ministry of Municipality, Agricultural Research Department, P. O. Box 200022, Doha, Qatar

2. Mohammed I. Abubaker: Ministry of Municipality, Agricultural Research Department, P. O. Box 200022, Doha, Qatar

3. Sowaid A.S. Al-Malki: Ministry of Municipality, Agricultural Research Department, P. O. Box 200022, Doha, Qatar

4. Hassen E. Al- Asmakh: Ministry of Municipality, Agricultural Research Department, P. O. Box 200022, Doha, Qatar

5. Hamad S. Al-Shammari: Ministry of Municipality, Agricultural Research Department, P. O. Box 200022, Doha, Qatar

Abstract:

The aim of this investigation was to determine effects of applying N fertilizer and the optimal irrigation amount on enhancing forage production on excessively saline soils (Sabkha) utilizing treated sewage effluent (TSE) irrigation. Experiments were carried out on saline-proven forage plant species. N15-fortified urea fertilizer was used to track the fertilizer-sourced nitrogen in the biomass yields. Effects of irrigation and nitrogen rate were examined on fodder biomass output, nitrogen content, and nitrogen use efficiency. A split plot design was adopted with three main factor drip-irrigation flow rates and four sub-factor nitrogen (N) application rates. The level of irrigation water significantly affected the amount of biomass produced but the effect of fertilizer application rate and its interaction with the TSE irrigation level were insignificant. No association was there between the two variables (correlation coefficients = 0.28 and 0.01). Variations in nitrogen derived from fertilizer (% Ndff), total nitrogen (% TN), and fertilizer nitrogen use efficiency (FNUE) although affected by the two tested factors but did not appear to be connected to changes in yield. The agronomic approach of growing a combination of fodder beet and legumes appeared as another potential technique besides breeding for achieving high nitrogen (TN) content and nitrogen use efficiency (FNUE).

Page(s): 145-155

DOI: DOI not available

Published: Journal: International Journal of Biology and Biotechnology, Volume: 20, Issue: 1, Year: 2023

Keywords:

Ntracing Fertilizer nitrogen use efficiency , N15 fortified urea , Excessive salinity , Sabkha land , Forage plant species , Biosaline agriculture

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