The effect of rhizoctonia root disease and applied nitrogen on growth, nitrogen uptake and nutrient concentrations in spring wheat

1994 ◽  
Vol 163 (1) ◽  
pp. 111-120 ◽  
Author(s):  
P. C. Wall ◽  
S. M. Neate ◽  
R. D. Graham ◽  
D. J. Reuter ◽  
A. D. Rovira
Keyword(s):  
Spring Wheat ◽  
Nitrogen Uptake ◽  
Root Disease ◽  
Nutrient Concentrations ◽  
Applied Nitrogen

U.S. West: Foliar-applied nitrogen fertilizers in spring wheat production

Crops & Soils ◽  
2013 ◽  
Vol 46 (4) ◽  
pp. 26-32 ◽  
Author(s):  
Olga S. Walsh ◽  
Robin J. Christiaens ◽  
Arjun Pandey
Keyword(s):  
Spring Wheat ◽  
Nitrogen Fertilizers ◽  
Wheat Production ◽  
Applied Nitrogen

Effect of inoculation with wild type Azospirillum brasilense and A. irakense strains on development and nitrogen uptake of spring wheat and grain maize

2002 ◽  
Vol 36 (4) ◽  
pp. 284-297 ◽  
Author(s):  
Sofie Dobbelaere ◽  
Anja Croonenborghs ◽  
Amber Thys ◽  
David Ptacek ◽  
Yaacov Okon ◽  
...  
Keyword(s):  
Spring Wheat ◽  
Nitrogen Uptake ◽  
Azospirillum Brasilense ◽  
Wild Type

Furrow irrigation of grain sorghum in a tropical environment. II. Influence of period of inundation on the utilization of soil and fertilizer nitrogen by the crop

1985 ◽  
Vol 36 (1) ◽  
pp. 83 ◽  
Author(s):  
GC Wright
Keyword(s):  
Nitrogen Uptake ◽  
Plant Uptake ◽  
Surface Soil ◽  
Grain Sorghum ◽  
Furrow Irrigation ◽  
Tropical Environment ◽  
Soil Layers ◽  
Fertilizer Nitrogen ◽  
Crop Maturity ◽  
Applied Nitrogen

Grain sorghum was grown in plots that had been fertilized, before sowing, with either 0, 80 or 170 kg Ha-1 nitrogen (N), and furrow irrigated for periods of 0 (sprinkler irrigated control), 3, 6, 12 or 24 h. The apparent uptake of fertilizer nitrogen declined from 63 to 7% as the period of inundation increased from 0 to 24 h. Large quantities of nitrate (up to 82 kg N ha-1) remained in the surface soil layers of all furrow irrigated ridges at crop maturity, in contrast to the sprinkler irrigated ridges (up to 4 kg N ha-1). At all inundation periods a constant proportion of the applied nitrogen was moved to the ridge tops, where it was unavailable for plant uptake. The differences in the recovery of applied nitrogen between the crops given 0 (sprinkler) and 3 h irrigation was mainly attributed to the surface accumulation of nitrate in the latter. Further reduction of nitrogen uptake with longer periods of inundation are attributed to differential rates of loss of nitrogen from the soil by denitrification and leaching.

Nitrogen efficiency of wheat cultivars in a Mediterranean environment

1999 ◽  
Vol 39 (8) ◽  
pp. 957 ◽  
Author(s):  
W. K. Anderson ◽  
F. C. Hoyle
Keyword(s):  
Grain Yield ◽  
Soil Nitrogen ◽  
Nitrogen Uptake ◽  
Nitrogen Efficiency ◽  
Grain Protein ◽  
High Ability ◽  
Wheat Cultivars ◽  
Nitrogen Fertiliser ◽  
Yield Increase ◽  
Applied Nitrogen

Summary. Experiments were conducted at 3 sites in Western Australia in 1993 using 33 wheat cultivars and crossbreds. Two rates of applied nitrogen fertiliser (0 and 40 kg/ha of nitrogen) were used to screen the lines for efficiency of nitrogen uptake, grain yield and grain protein production per unit of nitrogen applied, and nitrogen translocation to the grain. This information can be useful in determining nitrogen fertiliser strategies for wheat cultivars in the field. Nitrogen uptake in the plant tops was measured during the season and in the grain and straw at maturity. Grain yield, grain protein and nitrogen efficiency parameters were not markedly different between grain quality grades which are largely based on grain hardness. Yield efficient lines (high net yield increase per unit of applied nitrogen) were characterised by greater net uptake and net utilisation efficiencies but had similar yields and grain protein percentages as yield inefficient lines. Protein efficient lines (high net grain protein increase per unit of applied nitrogen) also had greater uptake efficiencies but lower utilisation efficiencies than protein inefficient lines. No lines were both yield and protein efficient suggesting that lines either use fertiliser nitrogen preferentially in yield production or in production of protein. The results indicate that in nitrogen-responsive situations it will be more profitable to use yield-efficient lines. Further investigation is needed to examine the suggestion that where soil nitrogen levels are higher (and yield responses to nitrogen are less) a greater economic return may come from using protein efficient lines. Some wheat lines had a high ability to recover fertiliser nitrogen applied to the crop. Others had a high ability to take up soil nitrogen. It is postulated that these differences may be due to differences in root systems. Some mid- and long-season lines that had high concentrations of nitrogen in the tops at anthesis metabolised that nitrogen poorly into grain yield or protein. This suggests that nitrogen efficiency may be partly related to maturity relative to length of growing season.

Effects of fungicide sprays on foliar diseases, yield, and quality of spring wheat in Finland

1992 ◽  
Vol 72 (3) ◽  
pp. 955-963 ◽  
Author(s):  
Jari Peltonen ◽  
Reijo Karjalainen
Keyword(s):  
Grain Yield ◽  
Spring Wheat ◽  
Nitrogen Uptake ◽  
Protein Quality ◽  
Erysiphe Graminis ◽  
Growth Stages ◽  
Genotypic Differences ◽  
Septoria Nodorum ◽  
Foliar Diseases

The fungicide Tilt (propiconazole) applied to spring wheat between Zadoks growth stages 47 and 55 significantly decreased the severity of foliar diseases caused by Septoria nodorum and Erysiphe graminis and prolonged duration of green leaf area. There were, however, genotypic differences in response to fungicide applications. With some cultivars, application of Tilt increased grain yield, nitrogen uptake efficiency and protein quality, but with other cultivars there was no benefit from spraying. Also, in a good growing season (1986) Tilt significantly increased grain nitrogen uptake, grain yield, grain weight, and protein quality, but in a cold and wet year (1987) Tilt did not increase yield or quality of the cultivars tested.Key words: Triticum aestivum, Septoria nodorum, Erysiphe graminis, fungicide application, yield components, protein quality

Relationship between yield and mineral nutrient concentrations in historical and modern spring wheat cultivars

Euphytica ◽  
2008 ◽  
Vol 163 (3) ◽  
pp. 381-390 ◽  
Author(s):  
Kevin M. Murphy ◽  
Philip G. Reeves ◽  
Stephen S. Jones
Keyword(s):  
Spring Wheat ◽  
Mineral Nutrient ◽  
Nutrient Concentrations ◽  
Wheat Cultivars
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