Tsadik Tadele

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Yield response of tef (Eragrostis tef) to nitrogen, phosphorus, potassium and sulphur under balanced fertilization on Vertisols in different agroecological zones of Ethiopia

Experimental Agriculture (2022)

Girma Chala Sofia Kassa Tsadik Tadele Kefyalew Assefa Habtemariam Teshome

Summary Nutrient deficiency is a major constraint in tef ( Eragrostis tef (Zucc.) Trotter) production in Ethiopia. In the past, a blanket recommendation of nitrogen (N) and phosphorus (P) fertilizers has been applied regardless of the diversity of agroecological zones and soil types. As crop responses declined with widespread deficiencies of nutrients, farmers have lost interest in applying the recommended fertilizer rates. The present study was conducted with the objective of quantifying the response of tef to different rates of N, P, potassium (K) and sulphur (S) fertilizers under balanced application of the nutrients other than the one under investigation. In each region, the same set of trials was implemented on farmers’ fields for three years. All trials were implemented on Vertisols across four agroecological zones (AEZs). The treatments were seven rates of N, six rates each of P and S and eight rates of K with a basal application of zinc (Zn) and boron (B). The results showed that the most limiting nutrient is N followed by P in each agroecological zone on the Vertisols. There was clear evidence of increases in grain yield with increasing rates of N and P, but the responses to K and S rates did not follow clear trends across AEZs. With balanced application of the other nutrients, 23–92 kg N ha −1 increased grain yield by 11–92%, while 10–40 kg P ha −1 increased yields by 12–33% over the control in the different AEZs. Based on results from dose–response models, it is concluded that the agronomic optimum rates for tef production are 69 kg N, 20 kg P, 30 kg K and 10 kg S ha −1 in the cool sub-moist mid-highlands and the tepid sub-humid mid highlands; 92 kg N, 30 kg P, 15 kg K and 10 kg S ha −1 in tepid moist mid highlands but 69 kg N, 10 kg P, 15 kg K and 10 kg S ha −1 in the tepid sub-moist mid highlands. On Vertisols not covered by this study, these recommendations should be subject to appropriate soil and plant analysis. We also recommend further studies on the nutrient requirement of tef on other soil types and AEZs.

Vertisol

Eragrostis

Agroecology

10.1017/s0014479722000114

Cite

Citations (4)

Evaluating the response of NPSZnB fertilizer on yield and yield components of teff at North western zone of Tigray, Ethiopia

Journal of Cereals and Oilseeds (2023)

Berhe Tewolde Tsadik Tadele Tekulu Kinfe Kahsu Geberesemaeti Gebrehiwet Weldegebrel

Teff is one of the major crops grown in central and north western zones of Tigray regional state. However, its productivity is low due to low soil fertility as a result of intensive and long history of cultivation and soil erosion. Therefore, a field experiment was carried out on a farmer’s field in Medebay zana and Tahtay koraro districts (Adekemalk and Beles kebelles) during the 2017 and 2018 main cropping seasons to evaluate the response of NPSZnB fertilizers on yield and yield components of teff. The treatments consisted of seven levels of NPSZnB (0, 50, 100, 150, 200, 250 and 300kg ha-1) and control treatment recommended NP (64:46) kgha-1. The experiment was laid out in a RCBD design with three replications. Analysis of the results revealed that, days to 50% heading, plant height, number of productive tillers per plant, straw yield, grain yield and harvest index resulted in significant difference over the control plot at both districts. However, days to 90% physical maturity and head panicle length at Medebay zana district and harvest index at Tahtay koraro have no significant difference within any of their treatments. The highest grain yields (2165.3 and 1996.6 kg ha-1) were obtained in response to the application of 200 and 250 kg ha-1of NPSZnB. It has 56.9 and 55.9% yield increment over control and 7.4 and 11% over the blanket recommendation at Medebay zana and Tahtay koraro districts, respectively. Thus, applications of 200 and 150 kg blended NPSZnB ha-1 with N adjusted to 64 kg N ha-1 is economically beneficial as compared to the other treatments in Medebay zana and Tahtay koraro districts, respectively because the highest net benefit and the marginal rate of return was above the minimum level (100%). Keywords: Blended, boron, zink, nitrogen, phosphorus, sulfur, teff and yield.

Panicle

10.5897/jco2020.0210

Cite

Citations (0)

Yield response of tef (Eragrostis tef) to nitrogen, phosphorus, potassium and sulphur under balanced fertilization on Vertisols in different agroecological zones of Ethiopia – CORRIGENDUM

Experimental Agriculture (2022)

Girma Chala Sofia Kassa Tsadik Tadele Kefyalew Assefa Habtemariam Teshome

An abstract is not available for this content. As you have access to this content, full HTML content is provided on this page. A PDF of this content is also available in through the 'Save PDF' action button.

Vertisol

Eragrostis

Agroecology

10.1017/s0014479722000485

Cite

Citations (0)

Evaluation of NPSZnB fertilizer levels on yield and yield component of maize (Zea mays L.) at Laelay Adiyabo and Medebay Zana districts, Western Tigray, Ethiopia

Journal of Cereals and Oilseeds (2019)

Tekulu Kinfe Tsadik Tadele Berhe Tewolde Gebrehiwot Weldegebreal Kahsu Gebresemaeti

The use of right amount of fertilizer based on crop requirement has a significant importance for sustainable crop production. Study was undertaken to investigate the effects of NPSZnB blended fertilizer for maize yield production at Laelay Adiyabo and Medebay Zana districts. Seven treatments were used for the field experiment. Treatments were without fertilizer, blanket recommended NP (64 kg N ha-1+69 kg P2O5 ha-1) and five treatments of blended fertilizer rates (150, 200, 250, 300, and 350 kg NPSZnB ha-1). Treatments were laid out in RCBD design with three replications. The results revealed that among fertilizers rates significantly (P ≤ 0.05) affected almost all the maize traits tested except tasseling, silking and maturity in Laelay Adiyabo district. However, in Medebay Zana district except tasseling, silking and maturity, plant height and thousand seeds weight, the rest parameters of above ground biomass yield, stover yield grain yield and harvest index were found significantly (P<0.05) affected by the fertilizer treatments. Highest stover yields (11.12 and 11.76 t ha-1) were obtained from application of 150 and 250 kg NPSZnB ha-1for Laelay Adiyabo and Medebay Zana districts, respectively. At both districts of Laelay Adiyabo and Medebay Zana areas the highest grain yields (3.20 and 2.97 t ha-1) were obtained, respectively from application of NPSZnB fertilizer at the rate of 300 kg ha-1, while the minimum grain yields of both districts were obtained from the control checks. The highest marginal rate of returns of 242 and 255% were obtained from application of 150 kg NPSZnB ha-1in both Laelay Adiyabo and Medebay Zana districts, respectively. Therefore, based on the result obtained from this study 150 kg NPSZnB ha-1 can be recommended as profitable for the production of maize at both districts of the study areas. Key words: Blended fertilizer, maize yield, profitability.

Stover

10.5897/jco2019.0193

Cite

Citations (13)

Effect of vermicompost and blended fertilizers rates on yield and yield components of Tef (Eragrostis tef (Zucc.) Trotter)

Journal of Soil Science and Environmental Management (2019)

Tekulu Kinfe Tsadik Tadele Berhe Tewolde Gebrehiwot Weldegebreal Kahsu Gebresemaeti

Tef is a stable crop in Ethiopia in which its yield is constrained by poor soil fertility management. Therefore, a field experiment was conducted for two consecutive years during 2016 and 2017 on clayey textural soil to assess the effect of vermicompost and inorganic fertilizer rates on yield and yield components of tef. Accordingly, field experiment with four levels of vermicompost (0, 2, 4 and 6 t ha-1) and four levels of NPS (0, 100, 150 and 200 kg ha-1) were arranged in randomized complete block design (RCBD) in a factorial combination with three replications. A tef variety, qunco was used as test crop. Analysis of the data revealed that highest grain yield (2269.80 kg ha-1) was obtained from the treatment of 4 t vermicompost ha-1+150 kg NPS ha-1. Significantly highest straw yield (6480.60 kg ha-1) was obtained from the treatment of 6 t vermicompost ha-1+200 kg NPS ha-1, but statistically similar with 4 t vermicompost ha-1 +150 kg NPS ha-1. To evaluate the feasibility of the treatments with view of farmers' practices, a partial budget analysis was conducted on straw and grain yield of tef and accordingly the highest marginal rate of return 4184% were obtained from combined fertilization of 4 t vermicompost ha-1 and 150 kg NPS ha-1. Therefore, based on the data obtained from this study application of 4 t vermicompost ha-1 and 150 kg NPS ha-1 will be recommended as profitable for the production of tef at Beles kebelle Tahtay Koraro district. Key words: Integrated nutrient management, NPS fertilizer tef yield, vermicompost.

Eragrostis

10.5897/jssem2019.0755

Cite

Citations (8)

Nitrogen use efficiency of tef [Eragrostis tef (Zucc.) Trotter] as affected by nitrogen fertilizer under chickpea-tef rotation at Tahtay Koraro District, North Ethiopia

Journal of Soil Science and Environmental Management (2019)

Tsadik Tadele

Study was carried out to evaluate the supplementary nitrogen requirement of tef to enhance nitrogen use efficiency of tef grown under chickpea-tef rotation cropping. On-farm, experiment was conducted during the 2015 main cropping season at Tahtay Koraro District of the Tigray regional State, Ethiopia on tef after preceding chickpea. The experiment was set in a randomized complete block design with three replications. Seven treatments: Six N levels (0, 11.5, 23, 34.5, 46, and 69 kg N ha-1) under the chickpea-tef rotation and the seventh one negative control (0 kg N ha-1) under the continuous tef cropping were tested. Surface soil samples were collected before tef sowing and after harvesting. They were analyzed for selected soil properties. Clay sized particles dominate the soil of the experimental site and the textural class of the soil is clayey. There was a difference in the bulk density of the same soil between the chickpea-tef and tef-tef sequence. Nitrogen and organic carbon were higher in soil under chickpea-tef cropping sequence than in soil under continuous tef cropping. Application of different N rates under chickpea-tef rotation statistically significantly affected grain (GNU), straw (SNU) and total nitrogen uptake (TNU) (kg ha-1). The highest total tef nitrogen uptake (59 kg N ha-1) was obtained in response to application of 34.5 kg N ha-1. The highest apparent nitrogen recovery (81%), agronomic efficiency (10.48 kg kg-1) and physiological N use efficiency were obtained in response to the lower N rate (11.5 kg N ha-1), 23 kg N ha-1 rate and 34.5 kg N ha-1 respectively. The highest grain protein content (7.78%) was recorded for grain harvested from plots fertilized with 23 kg N ha-1. Hence, it could be concluded that, under chickpea-tef rotation cropping system some supplementary nitrogen is needed to fulfill the nitrogen requirement and nitrogen use efficiency of tef crop at the study area. Key words: Chickpea, tef, nitrogen uptake, nitrogen use efficiency, protein content.

Eragrostis

Cropping system

Crop Rotation

10.5897/jssem2017.0660

Cite

Citations (4)

Methods of screening maize for resistance to stem borers and post-harvest insect pests

CIMMYT eBooks (2011)

Tsadik Tadele Stephen Mugo Regina Tende Paddy Likhayo

Source

Cite

Citations (30)

Determining the Best Rate of Blended NPKSZnB Fertilizer for Optimum Onion Yield and Yield Components in Northwestern Tigray, Ethiopia

Asian Soil Research Journal (2024)

Solomon Mebrahtom Geberesemaeti Kahsu Weldegebriel Gebrehiwot Tsadik Tadele Tewolde Berhe

Aim: The nutrient content of current fertilizer recommendations is unbalanced and is based on a very general and blanket recommendation for all soil and crop types, and their economic benefit is low. Therefore, this study was initiated to validate the recommendations regarding blended fertilizers applied to the soil and to identify the best fertilizer dose that ensures optimal yield and maximum economic return. Study Hypotheses: significance effect of blended NPKSZnB fertilizer on onion yield and yield components. Study Design: The experiment was designed using a randomized complete block design with three replications and seven treatments. Place and Duration of the study: The field experiment was conducted in the off-season of 2018 and 2019 in Tahtay Koraro (two farmers), and Laelay adyabo (two farmers) districts of in northern Ethiopia. Methodology: Seven treatments with NPKSZnB fertilizer rates (25, 50, 100, 150, 200, 250 and 300 kg·ha-1) were tested under irrigation conditions. Thus, for each plot nitrogen from Urea was applied at a rate of 150 kg ha-1. Surface soil samples were collected before planting onion harvesting at a depth of 0-20 cm to analyze selected soil chemical properties such as pH, extractable electric conductivity (ECe), cation exchange capacity (CEC), total nitrogen (TN), available P and exchangeable bases (K, Mg, Ca, and Na). Results: The application of different doses of NPKSZnB under irrigation conditions had a statistically significant (P < 0.05) impact on onion phenology, yield and yield components. The highest average onion yield (10,329 and 19,196 kg ha-1) was obtained after applying compound fertilizer doses of 200 and 250 kg ha-1 in Teahtay Koraro and Laelay Adyabo districts, respectively. However, the use of NPKSZnB fertilizer at a dose of 100 and 50 kg ha-1 for onion cultivation under irrigated conditions in T/koraro and L/adyabo districts was found to be economically viable. Thus, growers in both districts should use NPKSZnB compound fertilizer at these rates for onion production and productivity. Conclusion: Therefore, farmers in both districts should use NPKSZnB compound fertilizer at these rates for optimum onion production.

10.9734/asrj/2024/v8i1145

Cite

Citations (0)

Genetic diversity for resistance to larger grain borer in maize hybrids and open pollinated varieties in Kenya.

Second RUFORUM Biennial Regional Conference on "Building capacity for food security in Africa", Entebbe, Uganda, 20-24 September 2010 (2010)

J. K. Mwololo Stephen Mugo P. Okori Tsadik Tadele S. W. Munyiri

Second RUFORUM Biennial Meeting 20 - 24 September 2010, Entebbe, Uganda Abstract Resume Research Application Summary

Open pollination

Source

Cite

Citations (14)

Assessment of Soil Salinity and Irrigation Water Quality at Tahtay-Adyabo District, Northwestern Tigray, Ethiopia

Asian Soil Research Journal (2024)

Geberesemaeti Kahsu Weldegebriel Gebrehiwet Kinfe Tekulu Tewolde Berhe Tsadik Tadele

A study was conducted in Tahtay Adyabo northern Ethiopia to assess the salinity and irrigation water quality at farmer-level irrigation sites in the year of 2012. irrigation sites was identified and sampling units was assigned. 38 soil samples were collected from 19 plots (Dugub, Endaserawat, Mytewldish, Egum dima, and scattered wells in Mentebteb district ) at depths of 0-30cm and 30-50cm, along with, 21 water samples from 14 wells and 7 rivers. These samples were then analyzed at the Shire Soil Laboratory for salinity and fertility parameters. The results showed that the salinity status of surface soil at 0-30cm depth for dugub, scattered wells, and Myteweldish was 75% non-saline and 25% slightly saline. For Endaserawat, 50% was slightly saline, 25% moderately saline, and 25% strongly saline. Egum Dima showed 67% slightly saline and 33% moderately saline. In subsurface soil at 30-50cm depth, dugub, scattered wells, and Myteweldish were 75% non-saline and 25% slightly saline, while Endaserawat was 25% slightly saline and 75% moderately saline, and Egum Dima was 67% slightly saline, 16.5% moderately saline, and 16.5% strongly saline. Water analysis for the wells showed that out of 14 samples, 21% were non-saline, 21% were slightly to moderately saline, and 57% were severely saline. For the rivers, out of 7 samples, 43% were slightly to moderately saline and 57% were severely saline. Overall, out of 21 water samples from wells and rivers, 14% were non-saline, 29% were slightly to moderately saline, and 57% were severely saline. In general, the salinity status in Dugub, Endaserawat, Mytewldish, and Egum Dima varies from non-saline to strongly saline, but the severity is more pronounced in Endaserawat and Egum Dima. This salinity is attributed to the parent material and the water table. Crop selection, integration of organic matter, applying extra irrigation water and regular salinity monitoring is recommended, to optimize the productivity of the soils in the irrigation site.

10.9734/asrj/2024/v8i3156

Cite

Citations (0)