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Optimum nitrogen fertilization from the right source is the most important production factors for higher grain yield of wheat. Study to investigate the effect of type and rate of Nitrogen fertilizer on yield of bread Wheat was conducted in Ofla and Endamehoni districts of northern Ethiopia in 2017 and 2018 main cropping season. The treatments consists four levels of different sources of nitrogen fertilizer (Prilled urea, granular urea, urea super granule and UREAstabil) each with three application rates (46, 69 and 92 kg N ha−1) and one control (without any N fertilizer application) laid down in a randomized complete block design replicated three times. Grain yield of was affected significantly to the application rates and source of nitrogen fertilizer at Adigolo and Mekan districts of Ofla and Endamehoni respectively. The highest grain yield of 5.11 and 4.08 tha-1 was obtained from application 92 and 69 kg N ha-1 of UREAstabil at Adigolo and Mekan districts respectively. In both Adigolo and Mekan districts, grain yield of wheat showed that a linear increase with increasing rate of N fertilize while, application of 46 kg N ha-1 from UREAstabil reaches optimum agronomicaly and economically for the study areas. Key words: Prilled urea, super granular urea, granular urea, UREAstabil.

Study on conservation farming (CF) was conducted in moisture deficit area of Tigray, Ethiopia from 2013-2014. The experiment was conducted both on station and on farmers’ field. The treatments were: conventional tillage with fertilizer, conventional tillage without fertilizer, sub soiling with fertilizer, sub soiling + tie ridging with fertilizer, sub soiling + tie ridging + intercropping with fertilizer, sub soiling + tie-ridging + intercropping without fertilizer, sub soiling + tie ridging + transplanting with fertilizer, direct plating on basin with fertilizer and transplanting on basin with fertilizer. Significantly, higher mean sorghum grain yields of 2.40 and 2.50 t/ha were recorded from transplanted sorghum seedlings and directly planted sorghum seeds in basin respectively in the on station trial using early maturing ‘Hormat’ variety. Similarly, 2.40 and 2.38 t ha-1 grain yields were obtained from tie ridging and transplanting at basin respectively, while the lowest mean grain yield of 0.94 t/ha was obtained from the conventional tillage without fertilizer treatment in the farmers managed plots. Mean grain yield of 3.90 and 5.60 t/ha were also obtained from ‘Kodem’ and ‘Abaere’ Sorghum land races, respectively planted in planting basin at farmers field. Some soil chemical properties (like total nitrogen, available phosphorus and organic carbon) on the conservation treatments show increment. Planting basin (either direct planted or transplanted) and tie ridging tillage method with micro-dossing of fertilizers combined with conservation farming package components enhance crop, water and soil productivity and help mitigate the effects of prolonged dry spells in the moisture deficit of Tigray. Key words: Conservation farming, conventional tillage, basin, tie-ridge, mulching, moisture deficit, sorghum.

Advanced breeding lines with acceptable resistance and tolerance levels to broomrape is an important way of decreasing yield loss. The objective of this research was to assess the yield stability of faba bean genotypes under diverse broomrape (Orobanche crenata) prone production environments. Six faba bean genotypes were tested across six environments. The AMMI analysis showed significant (P

Six recently released bread wheat varieties, namely Inseno-1, Kekeba, Millenium, Dandandaa’, Sulla and Tay together with check variety Kubssa were tested under participatory varietal evaluation and selection trial at Wente-Sestro kebele, Lanfuro Woreda, of southern nation, nationalities and people region Ethiopia using mother-baby trials methodology in four Mothers and fifteen babies on farmers fields in 2010/2011 cropping season with objectives of evaluating the performance, selecting well performed & farmers accepted varieties, and identifying farmers varietal selection criteria. Data were collected on crop Phonology, growth and yield & yield related traits from the mother trials and farmers perception on the varieties both from mother and baby trials. The analysis of variance revealed that the varieties differed significantly (P

Study on the integrated effect of organic and chemical fertilizer levels on bread wheat was conducted in 2013 cropping season at high lands of Adi-golo and Mekan districts of Tigray, Ethiopia with the objective of determining the optimum integration of organic and inorganic fertilization for bread wheat production. The field experiment consists four level of N/P2O5 (0/0, 23/23, 46/46 and 69/69 kg ha-1) and five level of farmyard manure (0, 4, 6, 8 and 10 t ha- 1) arranged in factorial RCBD with three replications. Organic and chemical fertilizer applications had significant (P

A study to investigate the effect of integrated mineral and cattle manure fertilizers on grain yield of Barley (Hordium Vulgar L.) was evaluated during 2013 and 2014 main cropping season on vertisols of southern Tigray Ethiopia. The treatment consists four level of N/P205 fertilizer combination (0/0, 23/23, 46/46, 69/69 kg ha-1) and five levels of farm yard manure (0, 4, 6,8,10 ton ha-1) and their interactions arranged in Randomized Complete Block Design (RCBD) in three replication. The combined statistical analysis over locations revealed significant main effects of FYM and NP fertilizers (p ≤ 0.05) and interactions effects on grain yield of barley. There were also highly significance variation among N/P fertilizer main effect for biomass, physiological maturity, plant height, seeds per spike and effective tiller per plant, however no significance variation between the FYM main effects and interaction effects of NP and FYM for biomass, physiological maturity, plant height seeds per spike and effective tiller per plant. Grain yield consistently respond to increasing level of fertilizations in the form of NP, FYM or their integration. The results of this finding showed that combined application of 69/69 N/ P205 kg ha-1+ 10 ton ha-1 FYM, 69/69 N/P205 kg ha-1 + 8 ton ha-1 FYM and 69/69 N/ P205 kg ha-1 + 6 ton ha-1 FYM significantly (P