Yield Physiology of Rice

Fageria, N. K.

doi:10.1080/15226510701374831

Cited by 478 publications

(321 citation statements)

References 66 publications

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“…The increment in the total aboveground biomass yield could mainly be attributed to the predominant role that nitrogen plays in enhancing the physiological functions of plants through promoting leaf expansion, photosynthesis, and dry matter accumulation. Fageria (2007) also reported findings indicating improvements associated with rapid vegetative growth and canopy development.…”

Section: Effect On Grain and Total Aboveground Biomass Yieldmentioning

confidence: 81%

Yield and Nutrient Use Efficiency of Bread Wheat (Triticum Aestivum L.) as Influenced by Time and Rate of Nitrogen Application in Enderta, Tigray, Northern Ethiopia

Zemichael¹,

Dechassa

Abay

2017

Open Agriculture

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Open Agriculture. 2017; 2: 611-624 efficiency of 75% was obtained in response to the rate of 69 kg N ha -1 applied in three splits of 1/4 at planting, ½ at tillering, and 1/4 at anthesis. The equivalent values for the highest apparent recovery was 81% in the 2014 cropping season. The highest agronomic efficiency of 25 kg kg -1 and utilization efficiency of 55 kg kg -1 were recorded at the rate of 46 kg N ha -1 in three splits of 1/4 at planting, ½ at tillering and ¼ at anthesis. The equivalent values in 2014 were 34 kg kg -1 and 78 kg kg -1 , respectively. Grain protein concentration increased from 10.57% to 11.82% in 2013 and from 8.97% to 9.84% in 2014 cropping season as the rate increased from 23 kg N ha -1 to 69 kg N ha -1 . The acceptable marginal rate of return (1618%) and highest net benefit (34141ETB ha -1 ) was obtained from 69 kg N ha -1 for the variety Picaflor. In conclusion, applying 69 kg N ha -1 in three splits of ¼ at planting, 1/2 at tillering and ¼ at anthesis resulted in optimum grain yield, protein concentration and economic return of the crop.Keywords: agronomic nitrogen efficiency, grain yield, nitrogen recovery efficiency, nitrogen utilization efficiency, protein concentration IntroductionBread wheat (Triticum aestivum L.) is one of the most important cereal crops cultivated on about 1.6 million hectares of land with grain production of 3.5 million tons which make Ethiopia the second largest producer in Africa (CSA 2014). In the Tigray region of the country, bread wheat is a priority cereal crop for achieving food security and is cultivated on more than 100,175 hectares of land and has a total grain production of about 192,507 tons per annum (CSA 2014).Low soil fertility, especially nitrogen deficiency is one of the major constraints limiting wheat production in Abstract: Wheat is an important staple crop in arid and semi-arid areas of the Tigray region of Ethiopia. However, the yield and quality of the crop is markedly constrained by low soil fertility, inappropriate rate and timing of nitrogen application. Therefore, an experiment was conducted to elucidate the effect of different rates and timing of nitrogen fertilizer application on the yield, quality, and nitrogen use efficiency of bread wheat varieties during 2013 and 2014 main cropping seasons. The treatments consisted of four rates of nitrogen (23, 46, 69, and 92 kg N ha -1 ), three timing of N application (½ at sowing + ½ at tillering, ¼ at sowing + ½ at tillering + ¼ at anthesis, and 1/3 rd at sowing + 1/3 rd at tillering + 1/3 rd at anthesis) and two bread wheat varieties (Picaflor and Mekelle I) and 0 kg N ha -1 (control). The experiment was laid out as a randomized complete block design in a factorial arrangement with three replications. During both cropping years, increasing the rate of nitrogen application up to 69 kg N ha -1 significantly (P< 0.01) increased the total aboveground biomass and grain yields of the crop and decreased with further increase of applied N fertilizer. The highest aboveground biomass (6871 kg ha -...

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Section: Effect On Grain and Total Aboveground Biomass Yieldmentioning

confidence: 81%

Yield and Nutrient Use Efficiency of Bread Wheat (Triticum Aestivum L.) as Influenced by Time and Rate of Nitrogen Application in Enderta, Tigray, Northern Ethiopia

Zemichael¹,

Dechassa

Abay

2017

Open Agriculture

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“…4). High tillering is not so desirable in DSR (Fageria, 2007) because panicle number (m -2 ) depends largely on the main culm rather than tillers (Yoshida, 1981). Moreover, it is advantageous to have more highly productive primary and secondary tillers in DSR than tertiary and quaternary tillers that are less productive and often bear weak panicles.…”

Section: Discussionmentioning

confidence: 99%

Weed Management in Dry-Seeded Fine Rice under Varying Row Spacing in the Rice-Wheat System of Punjab, Pakistan

Khaliq

Matloob

Chauhan

2014

Plant Production Science

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“…To achieve high yield, maximization of leaf area is an important factor of the crop [14]. The increasing trend of LAI at higher nitrogen levels ( Figure 1) can be attributed to the positive effect of nitrogen on both leaf development and leaf area duration of the variety [15] [16]. Progressive increment in LAI of the variety up to certain days may be due to the fact that addition of nitrogen triggers increased number of leaves per plant and expansion of individual leaf.…”

Section: Growthmentioning

confidence: 99%

“…To develop crop growth models, information on dry matter production and partitioning between diverse plant parts is crucially needed [24] which conspicuously influenced by nitrogen fertilizer application. Dry matter partitioning to the reproductive organs hinge on number, capacity and activity of physiological sinks [15].…”

Section: Growthmentioning

confidence: 99%

Growth, Yield and Nitrogen Use Efficiency of New Rice Variety under Variable Nitrogen Rates

Haque¹,

Haque²

2016

AJPS

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Yield Physiology of Rice

Cited by 478 publications

References 66 publications

Yield and Nutrient Use Efficiency of Bread Wheat (Triticum Aestivum L.) as Influenced by Time and Rate of Nitrogen Application in Enderta, Tigray, Northern Ethiopia

Yield and Nutrient Use Efficiency of Bread Wheat (Triticum Aestivum L.) as Influenced by Time and Rate of Nitrogen Application in Enderta, Tigray, Northern Ethiopia

Weed Management in Dry-Seeded Fine Rice under Varying Row Spacing in the Rice-Wheat System of Punjab, Pakistan

Growth, Yield and Nitrogen Use Efficiency of New Rice Variety under Variable Nitrogen Rates

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