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Articles by G.B. Ashiono
Total Records ( 3 ) for G.B. Ashiono
  G.B. Ashiono , J.O. Ouda , T.E. Akuja , J.K. Kitilit , R.G. Irungu and S. Gatwiku
  The study was conducted to evaluate the nutritive value and productivity of Sweet Potato Vines (SPV) and Sorghum Silage (SS) as feeds for dairy production in the dry highlands of Kenya during the years 2002 and 2003. Data on yield parameters of SPV and SS were collected. Both On-centre and on-farm work involved evaluation of milk production by dairy cattle fed on varying proportions of SPV with SS while demonstration and popularisation of SPV and SS utilization technologies were conducted on farms. Mean grain and dry matter (DM) yields of sorghum were 5.5 and 23 t ha-1, respectively. The Dry Matter (DM), Crude Protein (CP), Neutral Detergent Fibre (NDF) and Acid Detergent Lignin (ADL) contents of SS were 308, 60.3, 622 and 61.6 g kg-1, respectively. Corresponding values of SPV were 160, 131, 341 and 64.5 g kg-1. Average daily milk yield was 3.44 l day-1 when SS alone was fed dairy cows and the yield was 26 l day-1 when a combination of SPV, SS and home made dairy meal was supplied. Improved and sustained milk production in most of the farms was observed when sorghum ratoon was fed as green chop alongside SS especially during the dry season. This showed that sorghum fed together with SPV had great potential in enhancing milk production.
  G.B. Ashiono , J.P. Ouma and S.W. Gatwiku
  An experiment was conducted over three seasons to determine the effects of different rates of application of Farmyard manure and inorganic fertilizer on growth and yield of cold tolerant sorghum variety E1291. The trial was conducted on a sandy loam soil at the Kenya Agricultural Research Institute-Lanet, Kenya. Farmyard manure obtained from the centre cattle shed was incorporated into the soil at the time of sowing at 0, 5, 10, 15, 20, 30 and 40 Mg ha-1 in a Randomized Complete Block Design replicated three times. Standard inorganic fertilizer was included as a control at the rate of 60 kg N ha-1 and 30 kg P2O5 ha-1. The highest grain yield was produced where 5 Mg ha-1 of farm yard manure was applied during the first year while 40 Mg ha-1 produced lowest yield among manure treatments. During the second year significantly (p<0.05) higher grain yields were achieved from treatments of 30 and 40 Mg ha-1. In the third year, no significant differences (p<0.05) were observed among the manure treatments but 30 and 40 Mg ha-1 farm yard manure produced highest yields. Manures produced higher yields in all years than the recommended inorganic fertilizer. After three seasons of evaluation, 10 Mg ha-1 of farm yard manure produced similar grain yields to the standard control while 30 and 40 Mg ha-1 farm yard manure consistently produced highest yields. These yield differences were not significantly different from treatments with 15 Mg ha-1 of farm yard manure.
  G.B. Ashiono , J.K. Kitilit , K.R.G. Irungu , T.E. Akuja and K. Changwony
  The study was carried out at three locations using six sorghum genotypes in Bomet district, Kenya during the long rains of the years 2001, 2002 and 2003. The objective was to determine the nutrient composition of six sorghum (Sorghum bicolour (L) Moench) varieties across agro-ecological zones. The sorghum varieties selected at KARI-Lanet included E1291, Ikinyaruka, Lan-1, BJ28, E6518 and a local variety. The samples collected were analyzed for DM, OM, CP, NDF and ADF. There were significant differences (p< 0.001) in OM, CP, NDF and ADF at all locations. There were also significant differences (p< 0.001) in nutrient composition among the six varieties. Ikinyaruka had the highest OM across the locations. Mulot had the highest CP while Kapliyo gave the highest amount of ADF among all the varieties. E6518 and Ikinyaruka showed the highest OM, NDF and ADF and were lowest in CP, respectively. Mulot was the best location for all the varieties while BJ28 was the most stable variety with the highest CP and moderate amounts of fibre across all the three locations.
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