Effects of nitrogen fertilizer on the yield and protein content of wheat grown under different cropping rotations

1970 ◽  
Vol 10 (45) ◽  
pp. 450 ◽  
Author(s):  
VF McClelland

The effect of nitrogen fertilizer on the yield and grain protein content of several cultivars of wheat grown under wheat-fallow and wheat-pasture-pasture-fallow rotations was studied in the Victorian Mallee during 1962 to 1965. Nitrogen fertilizer increased whest yield on the wheat-fallow rotation, but had little effect on the wheat-pasture-pasture-fallow rotation. Changes in grain protein content due to nitrogen fertilizer were small compared with changes due to the type of cropping rotation. Climate had relatively little influence on grain protein content despite marked variability in rainfall. The significance of this result is discussed in relation to a correlation established between grain protein content of unfertilized plots and yield response to applied nitrogen. The performance of the wheat cultivars Insignia, Olympic, and Beacon with and without applied nitrogen was similar under both rotations.

2021 ◽  
Author(s):  
Pushpendra K. Gupta ◽  
Harindra S. Balyan ◽  
Parveen Chhuneja ◽  
Jai P. Jaiswal ◽  
Shubhada Tamhankar ◽  
...  

Abstract Improvement of grain protein content (GPC), loaf volume and resistance to rusts was achieved in 11 Indian wheat cultivars that are widely grown in four different agro-climatic zones of India. This involved use of marker-assisted backcrossing (MABC) for introgression and pyramiding of the following genes: (i) the high GPC gene Gpc-B1; (ii) HMW glutenin subunits 5 + 10 at Glu-D1 loci, and (iii) rust resistance genes, Yr36, Yr15, Lr24 and Sr24. GPC was improved by 0.8–3.3%, although high GPC was generally associated with yield penalty. Further selection among high GPC lines, allowed development of progenies with higher GPC associated with improvement in 1000-grain weight and grain yield in the following four cultivars: NI5439, UP2338, UP2382 and HUW468. The high GPC progenies (derived from NI5439) were also improved for grain quality using HMW glutenin subunits 5 + 10 at Glu-D1 loci. Similarly, progenies combining high GPC and rust resistance were developed in the backgrounds of following five cultivars: Lok1, HD2967, PBW550, PBW621 and DBW1. The improved pre-bred lines developed during the present study should prove useful for development of cultivars with improved nutritional quality associated with rust resistance in future wheat breeding programmes.


2011 ◽  
Vol 123 (3) ◽  
pp. 226-233 ◽  
Author(s):  
J. Kumar ◽  
V. Jaiswal ◽  
A. Kumar ◽  
N. Kumar ◽  
R.R. Mir ◽  
...  

1992 ◽  
Vol 118 (3) ◽  
pp. 265-269 ◽  
Author(s):  
A. A. Sajo ◽  
D. H. Scarisbrick ◽  
A. G. Clewer

SUMMARYA field experiment was carried out at the Wye College Farm during 1988 and 1989. The aim was to study the effects of three rates and timings of nitrogen fertilizer application on the grain protein content of spring wheat cv. Axona. Results demonstrated that timing of fertilizer application was more important than the rate of nitrogen used. Grain protein development and final grain protein contents are discussed in relation to the seasonal variations experienced during the 1988 and 1989 growing seasons in South East England. Due to the early February sowing in 1989, grain protein content was not affected by the summer drought. Thus, the advantage of early sowing of spring wheat to reduce the detrimental effect of early summer drought on the grain protein content is emphasised.


1971 ◽  
Vol 11 (49) ◽  
pp. 229
Author(s):  
GJ Wells

Eight fertilizer experiments were conducted at five locations in the Mallee from 1963 to 1966, following both lucerne and volunteer pastures, to study responses to applied phosphorus and nitrogen in wheat on sandy soils infested with skeleton weed (Chondrilla juncea). Each year two separate sites were selected-one having no history of sown pasture, the other having supported a poor, but typical lucerne stand for several years. In most years, grain yields were markedly increased by both nutrients following either lucerne or volunteer pasture, and a large positive interaction occurred between phosphorus and nitrogen at five sites. The response to nitrogen obtained after lucerne was due to the low density of the lucerne stands, which had had little effect on skeleton weed populations and soil nitrogen levels. Total yield variation depended mainly on the number of fertile tillers (66 per cent) and grain number per ear (19 per cent). On the other hand, the yield increases to phosphorus and nitrogen were attributed mainly to increases in the number of grains per ear, although increased tiller number also contributed. Grain weight was of little importance in both total yield and yield response. The level of grain protein content depended mainly on the growing season rainfall (r = -0.832). Application of phosphorus reduced grain protein content, and nitrogen increased it. The response to applied nitrogen was related to growing season rainfall (r = 0.783) and the difficulty of determining optimum rates of application is discussed.


Diversity ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 186
Author(s):  
Fortunato ◽  
Nigro ◽  
Paradiso ◽  
Cucci ◽  
Lacolla ◽  
...  

Soil nitrogen abundance, as well as nitrogen use efficiency (NUE), significantly affect the crop yield and grain protein content (GPC). Depending on the genotype, a negative correlation between the yield and GPC can occur. The aim of the study was to assess the agronomic performance, and to explore physiological pathways for the efficient use of N fertilizer for two durum wheat cultivars, “Aureo” and “Vespucci”. After fertilization, the nitrogen content and values of some of the agronomic parameters and yield-related traits increased in both cultivars; nevertheless, a simultaneous rise in both the yield and GPC occurred only in Aureo. The biochemical parameters, analyzed at tillering, confirm the genotypic specificity of nitrogen use. In Vespucci’s roots, the nitrogen supply did not affect the nitrate reductase (NR), but greatly increased the amino acids and proteins, suggesting that ammonium is preferentially assimilated. In Aureo, nitrate is in part assimilated by the roots, as suggested by the ammonium increase and NR enhancement. In the leaves of both cultivars, organic nitrogen significantly increased after fertilization; however, the rise in amino acids, as well as in NR activity, was higher in Aureo than in Vespucci. These results indicate that the different nitrogen use, and in particular the diverse NR behavior, at tillering, are in part responsible of the cultivar differences in grain yield and GPC.


Crops & Soils ◽  
2018 ◽  
Vol 51 (3) ◽  
pp. 48-58
Author(s):  
Ethan C. Wyatt ◽  
Jacob T. Bushong ◽  
Natasha E. Macnack ◽  
Jeremiah L. Mullock ◽  
Randy Taylor ◽  
...  

2020 ◽  
pp. 34-38
Author(s):  
Badr ELdin Abdelgadir Mohamad Ahmed ◽  
Faisal Elgasim Ahmed ◽  
Hanadi Ibrahim Dessougi

A field experiment was conducted for two consecutive seasons during 2010/2011 and 2011/2012 on the Demonstration Farm of the Faulty of Agriculture, University of Kassala at New Half. Nitrogen use efficiencies (i.e. agronomic AE, internal IE, physiological PE and recovery RE) and grain protein content were investigated at different level of watering regimes and organic manure application of wheat (Triticum aestivum L). The watering regime treatments were irrigation every 7, 14 and 21 days, and the nitrogen fertilizer levels were zero, 43, 86 kg N ha-1 without or with 4 tons of chicken manure ha-1. Frequent irrigation, addition of high N level and organic manure significantly increased AE, IE, PE, RE and grain protein content compared to their respective treatments. Mixing of organic manure and nitrogen fertilizer increased AE, IE and RE but resulted in a slightly increase in PE than both treatments when they were added solely. Further, the magnitude of organic manure on AE, IE, RE and grain protein content was significantly greater under normal watering regime. Wheat plants under optimum conditions (frequent watering, high N level plus organic manure) used N, as indicated by AE, PE, IE and RE, more efficiently than under other treatment combination.


cftm ◽  
2017 ◽  
Vol 3 (1) ◽  
pp. cftm2016.10.0068
Author(s):  
Ethan C. Wyatt ◽  
Jacob T. Bushong ◽  
Natasha E. Macnack ◽  
Jeremiah L. Mullock ◽  
Randy Taylor ◽  
...  

1974 ◽  
Vol 54 (1) ◽  
pp. 1-7 ◽  
Author(s):  
D. R. KNOTT

Six tests were run in 1970 and 1971 to measure the yield and protein response of five diverse wheat cultivars (Triticum aestivum L.) to fertilizer treatments and particularly to nitrogen. The results indicate that complex interactions occur between cultivars, locations, and fertilizer treatments. Of the five cultivars, Pitic 62 and Era showed little yield response to the treatments used but gave the largest increases in protein content. Inia 66 and W.S. 1809 gave the largest increases in yield but showed little increase in protein content. Neepawa gave intermediate responses in both yield and protein content. In general, the heaviest applications of fertilizer did not produce significant increases in yield beyond those produced by the lower applications.


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