scholarly journals EFFECT OF NITROGEN FERTILIZER RATES AND FOLIAR FERTILIZATION ON GROWTH, YIELD AND YIELD COMPONENTS OF SUNFLOWER

2010 ◽  
Vol 1 (3) ◽  
pp. 451-459 ◽  
Author(s):  
F. El-Kady ◽  
M. Awad ◽  
E. Osman
Keyword(s):  
Nitrogen Fertilizer ◽  
Yield Components ◽  
Growth Yield ◽  
Foliar Fertilization ◽  
Yield And Yield Components ◽  
Fertilizer Rates

scholarly journals Influence of Plant Density and Nitrogen Fertilizer Rates on Yield and Yield Components of Beetroot (Beta vulgaris L.)

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Zerihun Sinta ◽  
Gezahegn Garo
Keyword(s):  
Beta Vulgaris ◽  
Nitrogen Fertilizer ◽  
Yield Components ◽  
Plant Density ◽  
Production Costs ◽  
Root Yield ◽  
Marginal Rate ◽  
Yield And Yield Components ◽  
Plant Densities ◽  
Fertilizer Rates

Ethiopia is endowed with diverse agroecologies suitable for the production of tropical, subtropical, and temperate vegetables. Agronomic practices such as plant density and fertilizer management are known to affect the crop environment, which influences the growth and ultimately the yield. So far limited research has been done on plant density determination and rate of nitrogen fertilizer in Ethiopia in general and the study area in particular. Thus, this experiment was carried out to evaluate the influence of plant density and nitrogen fertilizer rates on the yield and yield components of beetroot (Beta vulgaris L.). Four plant densities (133 333, 100 000, 80 000, and 66 666 plants per hectare) and four nitrogen (N) fertilizer rates (0, 46, 92, and 138 kg N ha−1) were arranged in a factorial combination in a randomized complete block design with three replications. The results revealed that the main and interaction effects of plant density and nitrogen fertilizer rates on total root yield, root length, root fresh weight, root diameter, and total soluble solute of beetroot were significant. The highest root yield of beetroot was achieved from the combination of 66 666, 80 000, and 10 0000 plant ha−1 with 92 kg N ha−1, whereas the lowest root yield of beet was obtained from the combination of 0 kg N ha−1 with a planting density of 133 333 plants ha−1. The economic analysis showed that higher net benefit and marginal rate of return were obtained from the application of 92 kg N ha−1 with plant densities of 66 666 plants ha−1. In order to prevent excessive production costs, the use of 66 666 plants ha−1 combined with the application of 92 kg N ha−1 is recommended.

scholarly journals Effects of Nitrogen Fertilizer Rate and Inter-row Spacing on Yield and Yield Components of Teff [Eragrostis teff (Zucc.) Trotter] in Limo District, Southern Ethiopia

2019 ◽  
pp. 1-12 ◽  
Author(s):  
Tamirat Wato
Keyword(s):  
Nitrogen Fertilizer ◽  
Yield Components ◽  
Biomass Yield ◽  
Southern Ethiopia ◽  
Row Spacing ◽  
Fertilizer Rate ◽  
Yield Attributes ◽  
Yield And Yield Components ◽  
Nitrogen Fertilizer Rate ◽  
Fertilizer Rates

Teff [Eragrostis tef (Zucc.) Trotter] is the main staple food of Ethiopia. It ranks the first among cereals in the country in area coverage and second in the production volume; however, its productivity is almost stagnant. The Quncho (Dz-Cr-387) teff variety was sown during the main cropping season of 2017 at the Limo District, Southern Ethiopia. The objective of this research was to study the effect of four nitrogen fertilizer rates (0, 32.5, 65 and 97.5 kg N/ha) and three inter-row spacings (15, 20 and 25 cm), to evaluate the effects on yield and yield components of teff and to identify the economically appropriate nitrogen rates and inter-row spacing that maximize the yield of teff. A factorial experiment was laid out in Randomized Complete Block Design (RCBD) with 12 treatment combinations and three replications. Phenological and yield-related parameters were measured. The main effects of N rate and inter-row spacing showed significant differences (P≤0.05) for all yield and yield components. The effects of N rate by inter-row spacing interaction were not significant for some traits except for the lodging index, biomass yield, grain yield, and straw yield and harvest index. Application of N rate at 97.5 kg/ha and inter-row spacing with 25 cm significantly (P≤0.01) increased grain yield of teff. Moreover, both N fertilizer rates and wider inter-row spacing increased the magnitudes of the important yield attributes including plant height, panicle length, number of effective tillers per plant, thousand seed weight, biomass yield and straw yield significantly (P≤0.01) and also inter-row spacing increased the magnitudes of important yield attributes significance (P≤0.05). From the results of the study, it is possible to conclude that increased application of nitrogen fertilizer rate and row spacing improves yield and yield components of teff. Therefore, the application of 97.5 kg N/ha and inter-row spacing of 25 cm gave maximum yield which can be recommended for the study area.

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