scholarly journals Tef [Eragrostis tef (Zucc)] grain yield response to nitrogen fertilizer rates in East Badewacho district, Hadiya Zone, Southern Ethiopia

2021 ◽  
Vol 7 (1) ◽  
pp. 1909203
Author(s):  
Tamirat Wato
Keyword(s):  
Grain Yield ◽  
Nitrogen Fertilizer ◽  
Eragrostis Tef ◽  
Yield Response ◽  
Southern Ethiopia ◽  
Fertilizer Rates ◽  
Hadiya Zone

scholarly journals Performance Evaluation and Selection of Improved Tef (Eragrostis tef L) varieties at Main Campus Site Hadiya Zone, Southern Ethiopia

2020 ◽  
Author(s):  
Dargicho Dutamo ◽  
Ermias Assefa ◽  
Muluneh Menamo
Keyword(s):  
Grain Yield ◽  
Insect Pest ◽  
Grain Filling ◽  
Eragrostis Tef ◽  
Southern Ethiopia ◽  
Soil Conditions ◽  
Main Campus ◽  
Grain Filling Period ◽  
One Year ◽  
Hadiya Zone

ABSTRACTTef [Eragrostis tef (Zucc.) Trotter] is a cereal crop resilient to adverse climatic and soil conditions, and possessing desirable storage properties. It is, a tetraploid with 40 chromosomes (2n = 4x = 40), belongs to the family Poaceae and, together with finger millet (Eleusine coracana Gareth.), to the subfamily Chloridoideae. It was originated and domesticated in Ethiopia. The experiment was conducted to identify, select and recommend adaptable, high yielding, Insect pest and disease resistant twelve released and one local variety at Main Campus Site Hadiya zone of SNNPR. Twelve tef varieties were evaluated in RCBD with three replications on station of Main Campus Site during main cropping season of 2019/2020. Analysis of variance revealed that there were significant differences among tef varieties, Culm length, panicle length, plant height, days to heading, days to maturity, grain filling period, primary panicle brunch, grain yield, biomass yield and harvest index at Main Campus site. Based on the obtained result, the improved tef varieties namely; DZ-Cr-438 DZ-Cr-974 (Dukem), DZ-01-899 (Gimbechu) and DZ-01-196 (Magna) at Main Campus site. Therefore, these varieties showed better performance for most of the studied characters including grain yield. Therefore, these varieties were selected and recommended for the study area and similar ecologies of Hadiya Zone. This finding, being the result of one year with single location, it is recommended that the experiment should be repeated at multi locations for several years to confirm the obtained results.

scholarly journals Response of Wheat to NP Fertilizer Rates, Precursor Crops and Types of Vertisols in Central Highlands of Ethiopia

2018 ◽  
Vol 10 (4) ◽  
pp. 231
Author(s):  
Adamu Molla
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Bread Wheat ◽  
High Rate ◽  
Eragrostis Tef ◽  
Yield Response ◽  
Use Efficiency ◽  
Central Highlands ◽  
Fertilizer Rates ◽  
Np Fertilizer

The objective of this work was to evaluate the performance of bread wheat under different NP fertilizer rates, precursor crops and types of Vertisols in order to determine higher agronomic and economic yielding combination of levels of these factors. The first field experiment comparing factorial combinations of 0, 80, 160 and 240 kg N ha-1 with 0, 20, 40 and 60 kg P ha-1 in 2006-2007 on four farmers’ fields, with four replications in each field, resulted in recommendation of 151/40 and 192/60 kg N/P ha-1 for further on-farm evaluation as compared to old recommendation (87/20 kg N/P ha-1) and to the farmers’ highest rate (256/80 kg N/P ha-1) under dominant precursor crops and types of Vertisols. Thus the second field experiment compared the above four treatments on 32 farmers’ fields (no replication in each field) on lentil (Lens culinaris) and tef (Eragrostis tef) precursors on Bushella and Mererie Vertisols in 2012-2013. Grain yield response of bread wheat to N/P rates following lentil precursor on Mererie was significantly (p < 0.01) quadratic while responses following lentil precursor on Bushella, and tef precursor on both types of Vertisols were significantly (p < 0.05) linear. Application of the highest rate (256/80 kg N/P ha-1) on wheat following lentil precursor gave grain yield of 5001 and 3407 kg ha-1 on Mererie and Bushella Vertisols, respectively. The same rate on wheat following tef precursor gave grain yield of 4143 and 3904 kg ha-1 on Mererie and Bushella Vertisols, respectively. However, application of 167/45 kg N/P ha-1 was more economical (79.7-134.1% marginal return) and is suggested to be promoted for bread wheat production following tef and lentil precursors on both types of Vertisols of the test locations and similar areas in the central highlands of Ethiopia. Further studies are also suggested to improve fertilizer use efficiency and reduce such high rate recommendations which could pose environmental risks.

The effect of irrigation strategies and nitrogen fertilizer rates on maize growth and grain yield

2020 ◽  
Vol 38 (4) ◽  
pp. 461-478 ◽  
Author(s):  
María I. Zamora-Re ◽  
M. D. Dukes ◽  
D. Hensley ◽  
D. Rowland ◽  
W. Graham
Keyword(s):  
Grain Yield ◽  
Nitrogen Fertilizer ◽  
Maize Growth ◽  
Fertilizer Rates

Response of Inga rice to application of nitrogen fertilizer at varying growth stages

1984 ◽  
Vol 24 (125) ◽  
pp. 250 ◽  
Author(s):  
PE Bacon ◽  
DP Heenan
Keyword(s):  
Grain Yield ◽  
Nitrogen Fertilizer ◽  
Vegetative Growth ◽  
Yield Response ◽  
Growth Stages ◽  
Nitrogen Application ◽  
Nitrogen Use

The growth, nitrogen use and yield of rice cv. lnga were examined in three experiments in 1978, 1979 and 1980. In each experiment, one rate of nitrogen was applied at six different times between permanent flood and three weeks after panicle initiation. Application of 50 kg N/ha in 1978 and 70 kg N/ha in 1980 at permanent flood increased yield. A higher rate (100 kg N/ha) at permanent flood in 1979 greatly increased vegetative growth but had little effect on grain yield. The grain yield response to 100 kg N/ha in 1979 significantly increased when application was delayed until panicle initiation. Nitrogen topdressing up to 14 d after panicle initiation resulted in an increased percentage of filled florets per panicle and heavier grains compared with application 14-21 d before panicle initiation. Delaying nitrogen application till 2 1 d after panicle initiation resulted in lower numbers of florets per panicle and consequently reduced yield.

scholarly journals Influence of Nitrogen Fertilizer Rates and Varieties on Growth, Grain Yield and Yield Components of Tef [Eragrostis tef (Zucc.) Trotter]

2020 ◽  
Vol 5 (5) ◽  
Author(s):  
Hayelom Berhe ◽  
Ashagrie Zewdu ◽  
Kebebew Assefa
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Block Design ◽  
Kernel Weight ◽  
Point Of View ◽  
Eragrostis Tef ◽  
Economic Point ◽  
Yield And Yield Components ◽  
N Rates ◽  
Fertilizer Rates

A field experiment was conducted to assess the influence of N fertilizer rates on growth, grain yield and yield components of Tef [Eragrostis tef (Zucc.) Trotter], in 2017 main cropping season. Three tef varieties (Kora, Boset and Asgori) and five Nitrogen rates (0, 30, 60, 90 and 120kg N ha-1) were used in Randomize Completed Block Design with three replications with the same dose of Triple Super Phosphate. The total and productive tiller number were highly (P<0.01) significantly affected by varieties. The control plot had maximum days to heading and this may be due to nitrogen fixation may exist and its availability may be deficient in the soil. The less response to the N rate may be due to variability of fertility or soil N content, and genetically difference between varieties. From means of varieties, the early flowerings of Boset and Asgori varieties were 101.4 and 103.79 days to maturity, respectively, but Kora (108.9 days) was late matured. Kora had maximum plant height (135.9cm) and panicle length (56.07cm) followed by Boset (115.1cm) and (42.49cm) respectively. The lodging index was affected by N rates and Kernel weight was highly significantly (P<0.01) affected only by varieties. The highest mean of thousand kernel weight (0.3387) was noted from Asgori variety. The grain yield was decreased with N rates and a better grain yield was obtained at 60-90kg N ha-1. Overall N rates indicated that, both Kora (1800) and Boset (1883) had a better grain yield in kg ha-1, but Asgori had lowest grain yield (1560kg ha-1). Based on the economic point of view, it would be more profitable to use 60kg N ha-1 N rates.

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.

Nitrogen fertilizer and wheat in a semi-arid environment. 2. Climatic factors affecting response

1968 ◽  
Vol 8 (31) ◽  
pp. 223 ◽  
Author(s):  
JS Russell
Keyword(s):  
Grain Yield ◽  
Nitrogen Fertilizer ◽  
Climatic Factors ◽  
Yield Response ◽  
Straw Yield ◽  
Growing Period ◽  
Positive Effects ◽  
Nitrogen Yield ◽  
Grain Nitrogen ◽  
Applied Nitrogen

The response of Gabo wheat to nitrogen fertilizer at 52 sites in the wheat growing areas of South Australia during 1956-61 was examined in relation to climatic factors by a stepwise multiple regression analysis using a computer. The ten dependent variables were the linear and quadratic coefficients obtained by fitting orthogonal polynomials to response curves of various parameters (grain yield, grain + straw yield, harvest index, grain nitrogen percentage, and grain nitrogen yield) to applied nitrogen at each of the 52 sites. The 23 independent variables were the amounts of rainfall and evaporation during the growing period, maximum and minimum temperatures and estimates of high temperature stress during spring and amount of rainfall immediately after sowing at each site. The climatic variables examined explained 46.5, 64.3, and 64.3 per cent of the variation in the response to nitrogen fertilizer of grain yield, grain + straw yield, and grain nitrogen yield respectively. The positive effects of increasing amounts of winter rainfall on yield response to applied nitrogen were marked. On the other hand, the negative effects of high maximum temperatures in the latter part of the growing period, particularly during October, on yield response were also evident.

YIELD RESPONSE OF CONQUEST BARLEY AS AFFECTED BY NITROGEN FERTILIZER AND SOIL TESTS FOR AMMONIUM- AND NITRATE-NITROGEN

1973 ◽  
Vol 53 (2) ◽  
pp. 163-168 ◽  
Author(s):  
W. F. NUTTALL
Keyword(s):  
Nitrogen Fertilizer ◽  
Nitrate Nitrogen ◽  
Climatic Factors ◽  
Phosphate Fertilizer ◽  
Nitrogen Fertilizers ◽  
Yield Response ◽  
Regression Analyses ◽  
Soil Tests ◽  
Quadratic Equations ◽  
Fertilizer Rates

Yield response of Conquest barley to nitrogen fertilizer applied at 22, 45, 67, and 134 kg/ha with and without 20 kg P/ha were significantly related by regression analyses to ammonium- and to nitrate-nitrogen in soils of northeastern Saskatchewan. Both linear and quadratic equations obtained from the regression analyses were used to develop tables estimating yield response of barley related to nitrogen fertilizer rates and soil tests for ammonium- and nitrate-nitrogen. The results indicated that a greater response to nitrogen fertilizer occurred with a given amount of ammonium- plus nitrate-nitrogen than with the same amount of nitrate-nitrogen alone. Phosphate fertilizer also significantly increased yield response to nitrogen fertilizers. Confidence intervals showed that wide variation could be expected in yield response to nitrogen fertilizers. Variation is attributed to differences in soil type, soil moisture, and climatic factors among experimental sites.

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