Thesis

EFFECTS OF SEEDLING AGE AND TRANSPLANTING DATE ON YIELD AND YIELD COMPONENTS OF TEF [Eragrostis tef (ZUCC.) TROTTER] AT KOBO, NORTH EASTERN ETHIOPIA

Wed, 23 Feb 2022 00:00:00 GMT

EFFECTS OF SEEDLING AGE AND TRANSPLANTING DATE ON YIELD AND YIELD COMPONENTS OF TEF [Eragrostis tef (ZUCC.) TROTTER] AT KOBO, NORTH EASTERN ETHIOPIA Tizazu Mulugeta A field experiment was conducted during the main cropping season of 2014 at Koba, North Eastern Ethiopia, to investigate the effects of seedling age and transplanting date on the yield and yield components ofte.ff A factorial combination of four seedling ages (15, 20, 25 and 30 days old teff seedlings) and three transplanting date, (first transplanting date, second week of July), transplanting delayed by ten days after the first transplanting date and transplanting delayed by 20 days after the first transplanting date) was laid out in a randomized complete block design (RCBD) with three replications using improved teff variety called Zobel (DZ -01- 1821) as a test crop. Phonological traits and yield and yield components were taken as experimental variables . Seedling age resulted in highly significant differences (p < 0. 01) for all Phenological traits and yield and yield components except straw yield which was significant at(P < 0. 05). Transplanting date was also highly significant (P < 0. OJ) affected days to physiological maturity, number of effective tillers plant", number of total tillers plant 1, EFFECTS OF SEEDLING AGE AND TRANSPLANTING DATE ON YIELD AND YIELD COMPONENTS OF TEF [Eragrostis tef (ZUCC.) TROTTER] AT KOBO , NORTH EASTERN ETHIOPIA BY Tizazu Mulugeta Major Advisor: Dr.Getachew Alemayehu ABSTRACT panicle length, grain yield, biomass yield and harvest index. But transplanting date didn't show any significant effect onl 000 grain weight, plant height and straw yield. The interaction effect of transplanting date and seedling age was also highly significant (P < 0. 01) on all Phonological traits and yield and yield components except straw yield. Grain yield of teff had positively and significantly correlation with all yield contributing parameters except days to heading and straw yield. Higher grain yields of 7.29 and 6.91 t ha·' were obtained by transplanting of 25 and 20 days old seedlings on second week of July, respectively. Hence, considering the growth and yield results of the present study, transplanting of 2 5 and 20 days old seedlings on second we~k of July can be suggested v~i~~e~'$..uction

SEEDING RATE AND TIME OF LUPINE (Lupinus a/bus L.} FOOD BARLEY (Hordeum vulgare L.) INTERCROPPING IN GOZAMIN DISTRICT, NORTHWESTERN ETHIOPIA

Wed, 23 Feb 2022 00:00:00 GMT

SEEDING RATE AND TIME OF LUPINE (Lupinus a/bus L.} FOOD BARLEY (Hordeum vulgare L.) INTERCROPPING IN GOZAMIN DISTRICT, NORTHWESTERN ETHIOPIA Sewnet Getahun Food barley and lupine are food crops often traditionally grown in intercropping in north western Ethiopia. But, there is no any documented information about the optimum seeding rate and time of lupine intercropping with barley in Gozamin District northwestern Ethiopia. Hence, a field experiment was conducted on seeding rate and time of intercropping of lupine with barley in Gozamin District to determine the appropriate planting density and time of lupine intercropping for harnessing the possible maximum productivity of barley fields. Factorial combinations offour time of lupine intercropping (on the same date, two weeks, four weeks and six weeks after barley sown) and three planting densities of lupine (5cm, 1 Ocm, l 5cm intra-row spacing between lupine plants) as well as two sole cropping of barley and lupine were laid out in randomized compete block design (RCBD) with three replications. The results indicated that there was no significant difference among all treatment combinations on phenological, vegetative growth and yield related parameters of barley. Except days to 50% emergence and number of grain per pod. However, highly significant differences among treatment combinations were observed for all growth and yield parameters of lupine. In the intercropping system of lupine with barley, the base crop barley completely dominated lupine in all treatment combinations. The land equivalent ratio (LER) was more than one in most cases to show more advantages of intercropping of lupine with barley than their sole cropping separately. The highest LER (1.48) and monitory advantage index (MAI) (17011.8) were recorded in the intercropping of lupine simultaneously with barley at low planting density which was intercropped with l 5cm intra-row spacing between lupine crop. The economic analysis had also confirmed that this treatment combinations (lupine intercropping simultaneously with barley at low planting density) gave the best advantage in the study area that can be recommended for further adoption by barley producing farmers. But, to come up with pragmatic recommendations for wider utilization of intercropping of lupine with barley, similar studies should be carried out further in different areas and cropping seasons.

EFFECT OF SOWING METHOD, SEEDING RATES AND NP FERTILIZERS LEVEL ON GROWTH AND YIELD OF BREAD WHEAT (Triticum aestivum L.} AND WEED INFESTATION IN WESTERN AM HARA REGION OF ETHIOPIA

Wed, 23 Feb 2022 00:00:00 GMT

EFFECT OF SOWING METHOD, SEEDING RATES AND NP FERTILIZERS LEVEL ON GROWTH AND YIELD OF BREAD WHEAT (Triticum aestivum L.} AND WEED INFESTATION IN WESTERN AM HARA REGION OF ETHIOPIA Fekremariam Asargew Two sets of experiments were conducted at Adet and Burie in 2011 main cropping season with the aim of comparing the traditional sowing practice (broadcasting) with drill method of sowing, and of determining the effect of seed and fertilizer rates on the infestation of weeds, and growth and yield of bread wheat. Totally fifteen treatments (combinations of three seeding rates and five NP fertilizer levels) were tested under factorial experiment with Randomized Complete Block Design (RCBD) at three replications. The seeding levels were 125, 175 and 225 kg/ha, and JOO, 150 and 200 kg/ha for broadcast and drill/row methods of planting, respectively. NP fertilizer levels were 92-46, 138-46, 138-92, 184-92 and 230-92 kg/ha N-P205. Plant height, stand count, tiller number, biomass and grain yield, thousand seed weight, hectoliter weight, wet gluten, grain and flour protein and SDS test were among the important data taken. Composite soil samples were also taken before planting and after harvesting from each treatment's plots. Analysis of variance (ANO VA) for all parameters was computed with SAS 12. 0 software and mean separation was done using Duncan's Multiple Range Test (DMRT). As result from Broadcast planting method indicated only the main effects of seeding rate on grain yield and weed biomass; and the main effect of NP rates on stand count, weed biomass, biomass and grain yield were significant (P

EFFECTS OF SEED PRIMING AND COATING ON EMERGENCE, YIELD AND YIELD RELATED TRAITS OF BREAD WHEAT (Triticum aestivum L.) IN WESTERN AM HARA REGION, ETHIOPI

Wed, 23 Feb 2022 00:00:00 GMT

EFFECTS OF SEED PRIMING AND COATING ON EMERGENCE, YIELD AND YIELD RELATED TRAITS OF BREAD WHEAT (Triticum aestivum L.) IN WESTERN AM HARA REGION, ETHIOPI Abebe Worku Field and laboratory experiments were conducted at Adet and Finoteselam research stations and Bahir Dar seed laboratory in 2014 to evaluate the effects of seed priming and coating on vigor, emergence, yield, yield related traits and disease reactions of bread wheat (Var., Tay). Twelve treatments were tested under field and laboratory conditions. Water and fermented cow urine were used as priming materials whereas Dynamic, Disco and genius coat were used as coating materials. RCBD with three replications was used for field experiments while CRD with four replications was used for laboratory experiment. Data like germination percentage, speed of germination, root length, shoot length, vigor index for laboratory experiment and emergence uniformity, days to emergence, days to heading, days to maturity, plant height, tiller number, leaf area index, crop growth rate, net assimilation rate, spike length, spikelet spike", seeds spike", thousand seed weight, grain and biomass yield, harvest index, septoria and Fusarium head scab scores for field experiment were taken. Analysis of variance for all parameters was computed with SAS version 9. 0 and mean separation was done using Duncan's Multiple Range Test at 1 and 5%. The mean grain and straw yield data combined across locations was adjusted down by 10% and subjected to partial budget analysis. The study revealed that germination percentage, speed of germination, vigor index, emergence uniformity, days to emergence, days to heading, days to physiological maturity, effective tiller number, leaf area index, crop growth rate, seeds per spike, grain yield and Fusarium head scab of bread wheat were significantly (p