Crop Science Research Papers/Topics

RESPONSE OF WHEAT (Triticum aestivum L.) VARIETIES TO PHOSPHORUS FERTILIZER RATES AT SHASHEMENE, ETHIOPIA

Abstract: Optimum rate of phosphorus fertilization and use of adaptable variety are important factors in increasing grain yield. Thus, study on the response of wheat varieties to phosphorus fertilizer rates was conducted in 2015 main cropping season at two locations in Shashemene district of Oromia, Ethiopia. The objective was to determine the economically feasible rate of P fertilizer and to assess the effect of P on yield components and yield of wheat varieties. The treatments were three b...

RESPONSES OF TEF [Eragrostis tef (Zucc.) Trotter] VARIETIES TO BLENDED NPSB FERTILIER RATES AT GELAN, CENTRAL ETHIOPIA

Abstract: Tef is the major crop grown in Ethiopia and the study area. However, its productivity is low mainly due to limited use of improved varieties and low soil fertility as result of intensive soil erosion and long history of cultivation. Therefore ,a field experiment was carried out on a farmer’s field at Gelan Akaki district during the 2018 main cropping season (from July to November 2018) to assess the response of tef varieties to blended NPSB fertilizer rates and to identify the ec...

PREVALENCE AND MANAGEMENT OF STRIGA (Striga hermonthica L.) AND ITS EFFECT ON PRODUCTIVITY OF SORGHUM [Sorghum bicolor (L.) Moench] IN EASTERN ETHIOPIA

Abstract: Sorghum grows in a wide range of agro-ecologies most importantly in the drought prone areas and is the main staple food crop in eastern Ethiopia. However, Striga hermonthica is the major constraint to sorghum production in the Striga-stricken or invaded areas. Thus, this research was conducted with the specific objectives to: (1) investigate the prevalence and socio economic impact of Striga infestation in sorghum growing areas; (2) evaluate the effect of moisture conservation prac...

EFFECTS OF CLIMATE VARIABILITY ON CROP YIELD, INCOME AND RURAL LABOR DISPLACEMENT IN CENTRAL ETHIOPIA

Abstract: Ethiopian smallholder farmers are the most vulnerable group of societyto the effects of climate variabilitybecause they have nature dependent economic system. This study examinedtheeffects of climate variability on five major cereals yield,crop income and rural labor displacementin thecentral highlands and Arsi grain plough farming systems of Ethiopia. The seven round unbalanced panel data (1994-2009) collected by Ethiopian Rural Household Survey from 15 kebeles of the seven farmin...

CROP PRODUCTIVITY, EFFICIENCY AND COMMERCIALIZATION OF SMALLHOLDER FARMERS IN THE HIGHLANDS OF EASTERN ETHIOPIA

Abstract: The agriculture sector is the most important segment in the Ethiopian economy. This is because of its contribution to the national GDP (38.5%) where crop accounted for 27.4%, and provides employment for 72.7% of the total population. Despite efforts made to commercialize and transform Ethiopian agriculture from subsistence to production of high value crops, the sector’s performance has been below expectations. In light of the problems and the research gaps identified, this study ...

IMPACTS OF CLIMATE CHANGE ON DURUM WHEAT(Triticum turgidum L var durum) PRODUCTION: ANALYSIS OF FUTURE ADAPTATION MEASURES IN THE CENTRAL RIFT VALLEY OF ETHIOPIA

Abstract: Assessing impact of climate change on durum wheat production and analysis of future adaptation measures bears enormous advantages in general and in Ethiopia in particular, owing to the country’s low adaptative capacity.The analysis shows that climate change will reduce durum wheat production in Central Rift Valley through time horizons i.e till the year 2030s, 2050s and 2080s.This study was conducted to characterize climate, assess its impact on durum wheat production and identif...

EFFECTS OF INTER-ROW AND INTRA - ROW SPACING ON GROWTH, YIELD AND YIELD COMPONENTS OF CHICKPEA (Cicer arietinum L.) AT FUNYAN DIIMO AREA, CHIRO DISTRICT, WEST HARARGHE, ETHIOPIA

Abstract: One of the basic agronomic practicesto improve the yield potential of chickpea isidentification of optimum plant spacing. Thus, field experiment was conducted to assess the effect of inter row and intra-row spacing on the growth, yield components and yield of chickpea at Chiro District. The treatment consisted of four inter- row (20, 30, 40 and 50 cm) and four intra- row (5, 10,15 and 20 cm) spacing. The experiment was laid out in a randomized complete block design (RCBD) in factor...

EFFECTS OF TIME AND RATE OF NITROGEN FERTILIZER APPLICATION ON GROWTH, YIELD COMPONENTS AND YIELD OF MAIZE (Zea mays L.) AT NEDJO, WESTERN ETHIOPIA

Abstract: Maize is the major food crop in western Ethiopia and is produced in a number of agro- ecologies. However, its productivity is constrained by low rates and inappropriate timing of N fertilizer applications. Therefore, a field experiment was conducted during the 2018 main cropping season in Nedjo district of western Ethiopia on a farmer’s field. The objectives of the study were to determine the effects of time and rate of nitrogen fertilizer application on growth, yield components ...

EFFECT OF NPS FERTILIZER RATES ON YIELD RELATED TRAITE, YIELD AND GRAIN PROTEIN OF BREAD WHEAT (Triticum aestivum L.) VARIETIES AT HARAMAYA, EASTERN ETHIOPIA

Abstract: Use of appropriate verities and balanced fertilizer recommendation are important agronomic practices used to increase the productivity and quality of bread wheat. Hence, field experiment was carried out to assess the effect of NPS fertilizer rates on yield related traits, yield and grain protein of bread wheat varieties and to determine economically feasible NPS fertilizer rate for bread wheat production. The treatments consisted of five levels of NPS (0, 50, 100, 150 and 200 kg ha...

EFFECTS OF BLENDED NPS FERTILIZERS RATE ON GREEN POD YIELD AND YIELD RELATED TRAITS OF HOT PEPPER (Capsicum spp.) VARIETIES AT ASSOSA, WESTERN ETHIOPIA

Abstract: Hot pepper is an important spice and vegetable crop in Assosa, western Ethiopia, however, its production is low due to several constraints of which low accessibility of improved varieties and poor cultural practices including soil fertility management. This research was conducted to asses the effect of blended NPS fertilizer on yield related and, green pod yield of hot pepper varieties and estimate cost-benefit of blended NPS fertilizer rates for hot pepper production. The research...

EFFECTS OF BLENDED NPSB FERTILIZER RATES AND INTRA-ROW SPACING ON YIELD AND YIELD RELATED TRAITS OF POTATO (Solanum tuberosum L.) UNDER IRRIGATION IN DEBRE LIBANOS DISTRICT, CENTRAL HIGHLANDS

Abstract: Potato is one of food and cash crop in Debre Libaanos District of central highlands of Ethiopia. However, the yield of the crop is low due to various constraints of which poor soil fertility and lack of proper plant spacing recommendation specific to the District. Therefore, a field experiment was conducted to asses’ effects of blended NPSB fertilizer rates and intra-row spacing on yield and yield related traits of potato and to estimate cost-benefit of NPSB fertilizer for potato...

RESPONSE OF COMMON BEAN (Phaseolus vulgaris L.) VARIETIES TO PHOSPHORUS FERTILIZER RATES AT HARAMAYA, EASTERN ETHIOPIA

Abstract: Common bean is one of the most economically important pulse crops cultivated in eastern Ethiopia. However, its average yield reported at national level remains far below the potential yield to be attained. This is partly due to low soil fertility management and inappropriate agronomic packages. Hence, this experiment was conducted to assess the effect of phosphorous rates on growth, yield and yield components of improved common bean varieties and to estimate the cost benefit of Pho...

EFFECT OF PHOSPHORUS FERTILIZER RATES AND PLANT DENSITY ON YIELD AND YIELD RELATED TRAITS OF COMMON BEAN (Phaseolus vulgaris L.) IN DANGUR DISTRICT, NORTH- WESTERN ETHIOPIA

Abstract: Common bean production is constrained partly due to lack of recommendation on the optimum plant density and rate of phosphorus fertilizer. In view of this, a field experiment was conducted in Dangur district during 2016 cropping season to determine the effect of phosphorus rate and plant density on yield related traits and yield of common bean. The experiment consisted of five level of phosphorus (0, 23, 46, 69 and 92 kg P2O5 ha-1) and four levels of plant densities (333333, 250000...

EFFECT OF INTER-ROW AND INTRA-ROW SPACING ON YIELD AND YIELD COMPONENTS OF CHICKPEA (Cicer arietinum L.) CULTIVARS IN MERTULEMARIAM, NORTHWESTERN ETHIOPIA

Abstract: One of the reasons of low yield of chickpea in Ethiopia is the use of inappropriate plant population by farmers. Thus, field experiment was conducted to assess the effect of inter and intra-row spacing on yield and yield components of chickpea cultivars in Mertulemariam, Northwestern Ethiopia. The treatment consists of two chickpea cultivars (one Kabuli type, Arertie; one Dessi type, local), three inter-row spacing (40, 30and 20 cm) and three intra-row spacing (20, 15 and 10 cm). R...

INTEGRATED WEED MANAGEMENT IN COMMON BEAN (Phaseolus vulgaris L.) AT WOLAITA SODO, SOUTHERN ETHIOPIA

Abstract: Common bean production is severely infested by weeds in Wolaita Zone, Southern Ethiopia. Field experiment was conducted to assess the integrated effect of different weed management practices and herbicides on the growth and yield of common bean and to evaluate the economic feasibility of weed management practices in common bean in 2014 at Wolaita Sodo. The experiment comprises of fifteen treatments which included two herbicides (s-metolachlor and pendimethalin) applied as pre-emerg...


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