Back to Search
Start Over
Resource Use Efficiencies of C3 and C4 Cereals under Split Nitrogen Regimes.
- Source :
- Agronomy; May2018, Vol. 8 Issue 5, p69, 16p
- Publication Year :
- 2018
-
Abstract
- Resources are limited, thus improving resource use efficiency is a key objective for cereal-based cropping systems. This field study was carried out to quantify resource use efficiencies in selected C<subscript>3</subscript> and C<subscript>4</subscript> cereals under split nitrogen (N) application regimes. The study included the following treatments: six cereals (three C<subscript>3</subscript>: wheat, oat, and barley; and three C<subscript>4</subscript>: maize, millet, and sorghum) and four split N application regimes (NS<subscript>1</subscript> = full amount of N at sowing; NS<subscript>2</subscript> = half N at sowing + half N at first irrigation; NS<subscript>3</subscript> = 1/3 N at sowing + 1/3 N at first irrigation +1/3 N at second irrigation; NS<subscript>4</subscript> = 1/4 N at sowing + 1/4 N at first irrigation + 1/4 N at second irrigation + 1/4 N at third irrigation). Results revealed that C<subscript>4</subscript> cereals out-yielded C<subscript>3</subscript> cereals in terms of biomass production, grain yield, and resource use efficiencies (i.e., radiation use efficiency (RUE) and nitrogen use efficiency (NUE)), while splitting N into three applications proved to be a better strategy for all of the selected winter and summer cereals. The results suggest that C<subscript>4</subscript> cereals should be added into existing cereal-based cropping systems and N application done in three installments to boost productivity and higher resource use efficiency to ensure food security for the burgeoning population. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20734395
- Volume :
- 8
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Agronomy
- Publication Type :
- Academic Journal
- Accession number :
- 132004073
- Full Text :
- https://doi.org/10.3390/agronomy8050069