Effects of nitrogen and herbicide on grain yield and protein content of a tall and a semi-dwarf wheat (Triticum aestivum) cultivar in semi-arid conditions

1990 ◽  
pp. 565-568 ◽  
Author(s):  
R. González Ponce ◽  
A. Lamela ◽  
M. L. Salas
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Protein Content ◽  
Arid Conditions ◽  
Dwarf Wheat ◽  
Semi Arid

Impact of powdery mildew on the yield of soft white spring wheat cultivars

2003 ◽  
Vol 83 (4) ◽  
pp. 725-728 ◽  
Author(s):  
R. L. Conner ◽  
A. D. Kuzyk ◽  
H. Su
Keyword(s):  
Triticum Aestivum ◽  
Powdery Mildew ◽  
Grain Yield ◽  
Protein Content ◽  
Spring Wheat ◽  
Blumeria Graminis ◽  
Resistant Cultivar ◽  
Resistant Cultivars ◽  
Soft White Spring Wheat ◽  
Moderately Resistant

The effect of powdery mildew (Blumeria graminis f. sp. tritici) on the grain yield and protein content of one susceptible, Springfield, and three moderately resistant cultivars, Fielder, AC Reed and AC Nanda, of soft white spring wheat (Triticum aestivum) was examined at two field locations near Lethbridge and Vauxhall, Alberta, in 1999 and 2000. At the start of heading, powdery mildew development was suppressed in half of the plots of each cultivar by a single spray application of the fungicide Tilt (propiconazole). Severe powdery mildew infection of the susceptible cultivar Springfield resulted in yield reductions ranging from 11.4 to 19.9%. The grain yield of the moderately resistant cultivar Fielder was significantly reduced at both sites in 1999 by 7.6–10.5% while AC Reed suffered a significant yield loss (7.6–9.1%) at Lethbridge in both years. The moderately resistant cultivar AC Nanda consistently had the lowest powdery mildew ratings and its yield was unaffected by the disease. A single fungicide application prevented disease buildup on the moderately resistant cultivars, but not on Springfield. The grain protein content of the moderately resistant cultivars was unaffected by powdery mildew, but it decreased in Springfield by 0.6–0.7%. Key words: Powdery mildew, Propiconazole, Blumeria graminis f. sp. tritici, wheat, Triticum aestivum, resistance

EFFECT OF DATES AND RATES OF SOWING ON YIELD AND YIELD COMPONENTS OF NARBON VETCH UNDER SEMI-ARID CONDITIONS

2001 ◽  
Vol 49 (1) ◽  
pp. 103-105 ◽  
Author(s):  
A. M. Tawaha ◽  
M. A. Turk
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Yield Components ◽  
Field Experiments ◽  
Grain Weight ◽  
Arid Conditions ◽  
Yield And Yield Components ◽  
1000 Grain Weight ◽  
Semi Arid ◽  
Northern Jordan

Field experiments were conducted during the winter seasons of 1998–1999 and 1999–2000 at Houfa in northern Jordan, to study the effect of the date and rate of sowing on the yield and yield components of narbon vetch (Vicia narbonensis L.). Progressive delays in sowing beyond 1 st January led to yield reductions of 11.1 and 17.9 at successive 15-day intervals. Plant height, pods stem –1, stems m –2 and 1000-grain weight followed the same trend as the yield. Grain yield was not significantly affected by the sowing rate.

Edge effects on yield, yield components and other traits in mechanized durum wheat and barley trials

1983 ◽  
Vol 101 (2) ◽  
pp. 383-387 ◽  
Author(s):  
A. Hadjichristodoulou
Keyword(s):  
Grain Yield ◽  
Durum Wheat ◽  
Edge Effect ◽  
Edge Effects ◽  
Yield Components ◽  
Straw Yield ◽  
Varietal Differences ◽  
Arid Conditions ◽  
1000 Grain Weight ◽  
Semi Arid

SUMMARYA series of trials were conducted during 1979–82 under semi-arid conditions in a Mediterranean-type environment to study the edge effects in mechanized durum wheat and barley variety trials when uncropped pathways are left between plots. Varietal differences in edge effects on grain yield were in most trials not significant. Thus, edge effects do not distort significantly the relative ranking of varieties.Edge effects were significant for all traits studied and higher in grain and straw yields. These effects were also higher in drier seasons. The overestimation of grain yield from whole plots was 13–18% in relatively high rainfall seasons and 29% in a dry season. In two seasons the scores on the two outer rows were higher than on the two central rows by 89 and 117 % for grain yield, by 72 and 73% for straw yield, by 44 and 48% for numbers of tillers, by 6% for 1000-grain weight and by 14 and 40% for number of grains per tiller. The edge effect was not confined to the outer rows, but it extended to the inner rows of the plot; the magnitude of this effect varied with season and trait.Rows adjacent to the pathway and unprotected from wind had a lower value for all traits than the opposite rows of the pathway, which were protected by the inner rows.

The Water Relations of Barley Grown Continually or After Fallow Under Semi-Arid Conditions

1994 ◽  
Vol 30 (4) ◽  
pp. 431-439 ◽  
Author(s):  
P. I. Orphanos ◽  
C. Metochis
Keyword(s):  
Water Stress ◽  
Grain Yield ◽  
Water Relations ◽  
Experimental Period ◽  
Water Requirement ◽  
Annual Rainfall ◽  
Arid Conditions ◽  
Semi Arid

SUMMARYGrain barley was grown either continually or in rotation with fallow in a 12-year experiment. Annual rainfall ranged from 120 to 297 mm. As the water requirement of the crop is 240 mm, growth in most seasons occurred under water stress. The amount of water conserved under fallow was only significant (75–100 mm) in three of the 12 years and only once did the water conserved increase barley yield in the following year. The total grain yield over the experimental period was twice as high in the barley–barley sequence as in the barley–fallow sequence.Cultiuo continuo de cebada o después de barbecho

Crop Growth, Development and Yield in Semi-arid Conditions in Botswana. II. The Effects of Intercropping Sorghum Bicolor with Vigna Unguiculata

1986 ◽  
Vol 22 (2) ◽  
pp. 169-177 ◽  
Author(s):  
D. J. Rees
Keyword(s):  
Plant Growth ◽  
Grain Yield ◽  
Vigna Unguiculata ◽  
Dry Weight ◽  
Climatic Conditions ◽  
Low Density ◽  
Arid Conditions ◽  
Plant Densities ◽  
Growth Development ◽  
Semi Arid

SUMMARYPlant growth, development and yield were monitored in sorghum/cowpea intercropping trials in Botswana during the drought seasons of 1982/3 and 1983/4. The cowpea proved to be more competitive than sorghum in these arid conditions, resulting in substantial increases in sorghum mortality and developmental delay, and substantial decreases in sorghum leaf area indices, dry weight production and grain yield. Intercropping in standard rows at medium plant densities resulted in Land Equivalent Ratios considerably less than 1.0, in contrast to earlier trials in Botswana in higher rainfall years which demonstrated intercropping advantages. Low density, wide row intercropping resulted in some small intercropping advantages, suggesting that this treatment may have potential in Botswana's variable climatic conditions.

Effect of irrigation, fertiliser type and variety on grain yield and nutritional quality of spelt wheat (Triticum spelta) grown under semi-arid conditions

2021 ◽  
Vol 358 ◽  
pp. 129826
Author(s):  
Juan Wang ◽  
Marcin Barański ◽  
Gultakin Hasanaliyeva ◽  
Recep Korkut ◽  
Hassan Ashraa Kalee ◽  
...  
Keyword(s):  
Grain Yield ◽  
Nutritional Quality ◽  
Triticum Spelta ◽  
Spelt Wheat ◽  
Arid Conditions ◽  
Semi Arid

scholarly journals Effect of supplemental irrigation on bread wheat genotypes yield under Mediterranean semi-arid conditions of north-eastern Algeria

2021 ◽  
Vol 74 (1) ◽  
Author(s):  
Mohamed Ridha Aissaoui ◽  
Mohamed Fenni
Keyword(s):  
Grain Yield ◽  
Agronomic Traits ◽  
Triticum Aestivum L ◽  
Supplemental Irrigation ◽  
Arid Conditions ◽  
North Eastern ◽  
Rainfed Conditions ◽  
Eastern Algeria ◽  
Jointing Stage ◽  
Semi Arid

 Different levels of supplemental irrigation regimes on four wheat (Triticum aestivum L.) genotypes were evaluated, two of which were introduced into Sétif region by ACSAD institution, during the growing season 2013-2014, in order to assess the effect of deficit irrigation pattern on yield traits performance and to determine most suitable genotype for local semi-arid conditions. On the basis of the experimentation data, it was found that supplemental irrigation improved the investigated genotypes yield, which ranged from 220.03 g m-2 for variety El-wifak in rainfed conditions to 368.3 g m-2 for variety Djanet (ACSAD899) with an increase of about 67%; just by applying two irrigations, the first at the jointing stage and the second at mid-flowering stage. This increase was related to the improvement of most agronomic traits that correlated significantly and positively with grain yield, in response to supplemental irrigation application. These findings indicated that Djanet (ACSAD899) was a genotype successfully introduced under irrigated conditions, while Hidhab (HD1220) with an average grain yield of 298.3 g m-2, proved to be more stable and well adapted to the locally rainfed conditions.

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