Yield and yield components of wheat (<i>Triticum aestivum</i> L.) and their interrelationships as influenced by nitrogen and seed rate in the Sudan

Osman, A. M.; Mahmoud, Zobeyri

doi:10.1017/s0021859600036947

Cited by 10 publications

(9 citation statements)

References 10 publications

(8 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This could be due to the reason that increasing in planting density enhances the competition and the crops will suffer from starvation due to the shortage of food prepared in the leaf by the process of photosynthesis which leads to late maturity of the crop. The result of this study was in line with that of Osman and Mohamed (1981) who reported that abundant supply of seed rates delay physiological maturity in wheat. The result was also in agreement with Seleiman et al (2010) who reported that increasing seeding rates from 250-400 mG 2 grains prolong the number of days from sowing to maturity of wheat.…”

Section: Days To 90% Physiological Maturitysupporting

confidence: 91%

Response of Bread Wheat (Triticum aestivum L.) Varieties to Seeding Rates at Kulumsa, South Eastern Ethiopia

Abdulkerim¹,

Tana²,

Eticha³

2015

Asian J. of Plant Sciences

View full text Add to dashboard Cite

A B S T R A C TWith the objective of determining the effect of seed rates on the growth parameters, yield components, yield and protein content of bread wheat varieties, a study was conducted at Kulumsa Agricultural Research Center from July to November 2012. Four varieties (Digalu, Danda'a, Kakaba and Shorima) and five seed rates (100, 125, 150, 175 and 200 kg haG 1 ) and RCBD with three replications were used. The results showed that days to 50% heading, days to 90% physiological maturity, plant height, spike length, hectoliter weight and Harvest Index (HI) were affected highly significantly (p<0.01) by the main effects of variety and seed rate whereas, grain protein content was affected highly significantly (p<0.01) only by variety and above ground dry biomass yield was affected highly significantly (p<0.01) only by the main effect of the seed rate. Furthermore, the interaction effect of variety and seed rate significantly affected thousand kernels weight, number of effective tillers and number of kernels per spike and grain yield. The use of 150 kg haG 1 seed rate for variety Shorima resulted in highest thousand kernels weight (39.48 g), number of kernels per spike (60.23) and grain yield (5339.3 kg haG 1 ). From the result of this study, the use of 125 kg haG 1 seed rate for variety Danda'a; 150 kg haG 1 for varieties Shorima and Kakaba and 175 kg haG 1 for variety Digalu were identified for good crop stand and finally the yield.

show abstract

Section: Days To 90% Physiological Maturitysupporting

confidence: 91%

Response of Bread Wheat (Triticum aestivum L.) Varieties to Seeding Rates at Kulumsa, South Eastern Ethiopia

Abdulkerim¹,

Tana²,

Eticha³

2015

Asian J. of Plant Sciences

View full text Add to dashboard Cite

show abstract

“…The small response probably occurred because available soil nitrogen content was high. The result disagreed with other reports that short cultivars responded more than tall cultivars to nitrogen fertilizer (OSMAN and MAHMOUD 1981, WATSON et al 1963, VoGELet al 1963). Nitrogen fertilizer increased several yield components, namely percentage fertile spikelets, spike length, harvest index, and kernel number per spike.…”

Section: Resultscontrasting

confidence: 98%

“…Three of the most important yield components of wheat are spikes per unit area, kernels per spike, and weight of kernels (SCHLEHUBER and TUCKER 1967). Those determinants of yield are affected both by genetic factors (SYME 1969, WALCorrand LAING 1976, SPIERTZ and VAN DE HAAR 1978 and agronomic practices (OSMAN and MAHMOUD 1981, WATSON et al 1963, VoGEL et al 1963, FARIS and DE PAUW 1981.…”

Section: Introductionmentioning

confidence: 99%

“…Agronomic inputs usually cause greater response in dwarf wheats than in tall wheats. Semidwarf wheat cultivars, for instance, are more capable than tall wheats of economically responding to large amounts of nitrogen fertilizer (OSMAN and MAHMOUD 1981, WATSON et al 1963, VoGEL et al 1963. Similarly, the optimum seeding rate for maximum yield is higher for semidwarf wheats than for tall wheats BLACKLOCK 1971, FARjsand DE PAUW 1981).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Response of Yield Attributes of Isogenic Tall, Semidwarf, and Doubledwarf Winter Wheats to Nitrogen Fertilizer and Seeding Rates

Kim

Paulsen

1986

J Agronomy Crop Science

View full text Add to dashboard Cite

Relationships between grain yield attributes and response to agronomic practices of dwarf and tall genotypes in the major U.S. wheat region were investigated. Isogenic tall, semidwarf, and doubledwarf (Norin 10/5''"Pawnee) 'Pawnee' winter wheat {Triticum aestivum L.) lines were planted in a split-split-plot design with nitrogen fertilizer rates of 0, 50, and 100 kg ha~^ as main plots and seeding rates of 30, 60, and 90 kg ha~^ as subplots in four replications at Hutchinson and Manhattan, Kansas, during 1980Kansas, during -1981 There was no evidence that dwarf lines responded better than the tall line to nitrogen fertilizer; however, percentage fertile spikelets, spike length, harvest index, and kernel number per spike of the semidwarf line were favored by high nitrogen rates. Grain yield was more responsive to seeding rate in the doubledwarf line than in the other lines, and test weight and spike number per unit area were more responsive to seeding rate in one or both dwarf lines than in the tall line. Grain yield of each genotype depended highly on the predominant yield attributes -usually spike number per unit area and/or kernel weightat one or both locations.

show abstract

“…Crop response to SR can be measured by the analysis of plant morphological differences (Puckridge and Donald, 1967;Kirby, 1970;Kirby and Faris, 1972;Fischer et al, 1976), by examination of water and light differences in and around the crop (Kirby, 1970;Tompkins et al, 1991;Singh and Uttam, 1997), and by the different abilities of cultivars to compensate for low or high plant density (Osman and Mahmoud, 1981;Hassanein et al, 2001;Stephen et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Effects of Seeding Rate on Durum Crop Production and Physiological Responses

et al. 2017

View full text Add to dashboard Cite

Core Ideas Optimum seeding rate on elite durum wheat depends on environment. Seeding rate had a significant positive relationship with grain yield, leaf area index, and carbon isotope discrimination. Seeding rate should be adjusted for environment and genotype for maximum yield. Seeding rate can be manipulated to optimize the ability of the crop to capture available resources and therefore increase yield. Seeding rate may vary between regions according to the climate conditions, soil type, sowing time, and other agronomic practices. Insufficient information is available for optimum seeding rate on durum wheat (Triticum turgidum L. var durum) for some production zones, and response to seeding rate is unknown for recently registered durum cultivars in Canada. The objective of this study was to determine the effect of seeding rate (SR) on performance of Canada Western Amber Durum wheat cultivars and study the underlying physiological response to a wide range of SRs. Eight durum wheat cultivars were sown at densities of 163, 217, 272, 326, and 380 seeds m−2 to study the effect of SR on several agronomic and physiological traits. Each experiment was planted as a factorial randomized complete block design with three replications near Swift Current and Regina in 2010 and 2011. High genetic and environmental response to SR was observed between cultivars. The results showed an increase in grain yield as the SR increased. The optimum SR for cultivars grown at Swift Current and Regina was 272 to 326 seeds m−2 and 217 to 272 seeds m−2. Grain yield showed a positive relationship with carbon isotope discrimination (CID) and leaf area index (LAI). In turn, LAI showed a linear increase with SR. Information generated from this study could enable producers to maximize crop grain profitability by optimizing plant density.

show abstract

Yield and yield components of wheat (Triticum aestivum L.) and their interrelationships as influenced by nitrogen and seed rate in the Sudan

Cited by 10 publications

References 10 publications

Response of Bread Wheat (Triticum aestivum L.) Varieties to Seeding Rates at Kulumsa, South Eastern Ethiopia

Response of Bread Wheat (Triticum aestivum L.) Varieties to Seeding Rates at Kulumsa, South Eastern Ethiopia

Response of Yield Attributes of Isogenic Tall, Semidwarf, and Doubledwarf Winter Wheats to Nitrogen Fertilizer and Seeding Rates

Effects of Seeding Rate on Durum Crop Production and Physiological Responses

Contact Info

Product

Resources

About