http://ir.bdu.edu.et/handle/123456789/11526 Sat, 13 Jan 2001 05:49:11 GMT 2001-01-13T05:49:11Z http://ir.bdu.edu.et/handle/123456789/12355 EFFECT OF SEED SOURCE ON SEED QUALITY, YIELD AND YIELD COMPONENTS OF BREAD WHEAT (Triticum aestivum L.)VARIETIES, KOGA IRRIGATION SCHEME, AMHARA REGION, NORTHWEST ETHIOPIA Yibeltal Beyene Bread wheat (Triticum aestivum L.) is one of the major food and cash crops for smallholders in Ethiopia. However, the productivity of bread wheat remains low as compared to the world average yield due to the un improved varieties and inadequate quality seed. Study was conducted to assess the quality of bread wheat seeds; to compare quality parameters of different seed producer organization and to evaluate the effect of different seed sources and varieties on seed quality, yield and yield components. Seeds of Kakaba and Ougolcho were collected from the six seed producer organization viz. Ethiopia seed enterprise, Amhara seed enterprise, Adet agricultural research center, Avalo private research Seed Company, Ediget Bandinet cooperative union and also from ten farmers for the purpose of laboratory and field experiment. The study comprised of survey, laboratory experiment and field experiments. A survey was carried out using a structured questionnaire involving 80 wheat growing farmers especially in the dry season in three kebeles. The survey used as preliminary question for the achievements of laboratory and field experiment. A laboratory test was carried out on physical and physiological qualities of the collected sample seeds. The field experiment was laid out as Randomized Complete Block Design (RCBD) with three replications in factorial arrangement of two varieties, and six seed sources. The result of the survey indicated that 53.8% of respondents were grown Kakaba variety, 27.5% of respondents were grown Ougolcho and remain 18.8% respondents were Kingbird variety. Among the major reasons of variety preference, high yielding (75.0%), early maturing (6.3%), disease resistances (18.7%) were reported by the respondents. The result of the laboratory study showed that the interaction of seed sources and variety had highly significantly effect on pure seed, inert matter and moisture content while their effect on hundred seed weight was non-significant. Similarly, standard germination, seedling length, seedling vigour index I and seedling vigor index II were affected highly significantly by the interaction of seed sources and variety but, standard germination and speed of germination had highly significant affected by only seed source and variety. The result of field experiment indicated that number of off types, number of kernels per spike, biomass yield, grain yield and harvest index had significantly difference by the interaction of seed source and variety. The results of this study suggested the importance of using adaptable improved varieties taken from reliable source to increase productivity of bread wheat. However, it is necessary to further study considering more number of seed sources, and varieties at major wheat growing areas and different cropping seasons to make valid recommendation. Key words: Formal seed source, Improved seed, Informal seed source Wed, 11 Aug 2021 00:00:00 GMT http://ir.bdu.edu.et/handle/123456789/12355 2021-08-11T00:00:00Z http://ir.bdu.edu.et/handle/123456789/12169 A STUDY ON STORABILITY OF HYDRO AND HALO-PRIMED UPLAND RICE SEED Yilikal Melak Seed priming enhances seed performance in many crop species including rice. But, storing primed seed for longer period of time is the challenge in commercializing of the technology. This study was conducted to investigate the storability of halo-primed and redried seed of upland rice under laboratory conditions. Rice seeds were hydro-primed (distilled water for 24 hours) and halo-primed using different concentrations of calcium chloride in 0.25, 0.5, 0.75% and 1.00% (w/w) CaCl2 solutions for 24 hours and re-dried. The primed seeds were compared with dry seeds. Both primed and dry seeds were stored in low-density polyethylene and high-density polyethylene plastic bags at 25± 3oC for 0, 15, 30, 45, 60, and 75 days. Data on germination percentage, seedling fresh and dry weights, speed of germination, root and shoot lengths, vigor index and thousand seed weight were collected every fifteen days. It was observed that storing rice seed hydroprimed (distilled water) and halo-primed (@1.00% CaCl2), re-dried, and stored in highdensity polyethylene plastic bags could readily maintain seed germination and seedling growth parameters until 45 days whereas low-density polyethylene bags could maintain physiological quality until 30 days. Therefore, it is recommended that rice seed primed with 1.00% CaCl2, re-dried and stored in high-density polyethylene plastic bags could be sold within 45 days after priming Fri, 02 Jul 2021 00:00:00 GMT http://ir.bdu.edu.et/handle/123456789/12169 2021-07-02T00:00:00Z http://ir.bdu.edu.et/handle/123456789/12167 VALUE CHAIN ANALYSIS OF POTATO (Solanum tuberosum L.) PRODUCTION IN LAY GAYINT DISTRICT Of SOUTH GONDAR ZONE, ETHIOPIA Tsehay Walelign Potato is important for its contribution to food security and as source of cash income for a large proportion of the rural households. However enhancing potato production to reach markets and actively engage in the potato value chain is the key issue needed in the study area. The major constraints identified were lack of irrigation facility, disease and pests, high input cost, lack of appropriate storge, lack of integration among actors, weak extension services, lack of improved seed and low market price,limited credit services, shortage of capital, and high transportation costs. Hence the objective of the study was to analyze the value chains of potato in Lay Gayint district of South Gonder Zone, Ethiopia. Primary and secondary data were used and for the primary information 212 producers, 2 wholesaler, 10 retailers and 16 consumers’ respondents were selected. Secondary data were also collected from the different sources to complement the data obtained from the survey. The collected data were analyzed using SPSS version 20 and STATA software using descriptive statistics and OLS. The results showed that, major potato value chain actors in the district were; producers, collector, wholesaler, retailer and consumers. The econometric analysis using ordinary least square estimation on education level of the farmers, sex, age, size of land allocated for potato and agricultural input used were found to be the significant variables influencing production of potato and market supply. The result showed that the majorities 56.65% of potato production was sold, 9.76% of the potato productions were loss and 13.88% of potatoes were seed, and the rest 19.71% was allocated for consumption. Farmers supply potato in the market in large quantity but to sales in low price for collectors. Based on the findings that the stakeholders and governmets should focus on strong integration among actors, developing irrigation facility, distributing agricultural input timely, reduce unfair market and constructing comfortable storage, finally strengthening the provision of formal and informal education. Fri, 02 Jul 2021 00:00:00 GMT http://ir.bdu.edu.et/handle/123456789/12167 2021-07-02T00:00:00Z