http://hdl.handle.net/123456789/2232 Search the Channel search http://repository.ksu.edu.sa/jspui/simple-search http://hdl.handle.net/123456789/7920 Title: Goat production in Oman : management and possible improvements<br/><br/>Authors: Al-Marshudi, A.S.; Al-Sharji, K.M.; Zaibet, L.<br/><br/>Abstract: This paper examines the effect herd size, fodder, capital, watercondition and management on goat gross revenue in Oman. Therewere several essential results. First, there is a strong positiverelationship between some of the mentioned variables, namely fodderand labor, with gross revenue. Second, increasing goats herd sizeshows a positive effect on revenue. However, as size become large sothat input exceed output we get what economist referred as the law ofdimishing return. Third, Factors such as water condition andmanagement practice are of some important on the goat productionsystem. A program and policy effort to encourage farmers to useinnovation for animal husbandry will no doubt improve theproductivity of tradition goat system in Oman.<br/><br/>Description: Department of Agricultural economics and Rural Studies, College of Agriculture,Sultan Qaboos University, P.O. Box 34, Al Khod 123, Sultanate of Oman Mon, 01 Jan 2001 00:00:00 GMT http://hdl.handle.net/123456789/6205 Title: Allelopathic effects of rhazya stricta on seed germination of some range plant species<br/><br/>Authors: Assaeed, A.M.; Al-Doss, A.A.<br/><br/>Abstract: Rhazya stricta Decne., an evergreen poisonous shrub, has invaded large areas ofovergrazed rangelands in Saudi Arabia. To understand the mechanism by which this noxiousplant spreads, a laboratory experiment was conducted to assess its allelopathic potential to thegermination of some range plants. Leachates were prepared from fresh and dry foliage of .Rstricta.Seeds were germinated in petri dishes moistened with either leachates or tap water .Leachates inhibited germination with fresh foliage leachate being most severe. Completegermination inhibition was observed in Farsetia aegyptia and Pennisetum divisum. Haloxylonsalicornicum and Lasiurus scindicus were the least affected. Rate of germination was also.significantly reduced H. salicornicum was the least affected (56 and 25% in presence of dryand fresh leachates respectively), while other species were drastically reduced. Washing andregermination of the remaining non-germinated seeds indicated that seed viability of .Faegyptia and P. divisum may have been lost in presence of leachates. Osmotic effects ofleachates may have contributed to germination inhibition in Atriplex halimus, Achilleafragrantissima, L. scindicus and R. strictaWhile inhibiting early germination of other .,species R. stricta needs enough water to leach water soluble inhibitor present in its seeds.which in turn would also be sufficient to overcome osmotic effect of foliage leachate. Wed, 01 Jan 1997 00:00:00 GMT http://hdl.handle.net/123456789/5295 Title: Damage and reproduction potentials of heterodera avenae on wheat under outdoor conditions<br/><br/>Authors: Al-Hazmi, A.S.; Al-Yahya, F.A.; Abdul-Razig, A.T.<br/><br/>Abstract: Two pot experiments, in consecutive years, were conducted under outdoor conditions during the wheat growing season to examine the relationship between increasing initial population densities (Pi: 0-3,000 cysts/pot) of Heterodera avenae and corresponding responses of wheat cv. Yecora Rojo. Results of both experiments were very similar. The nematode suppressed plant height, root and biomass dry weights, and grain yield at all Pi's studied. The suppression of these parameters, as well as the final nematode population densities (Pf), increased with increasing Pi levels. The reproduction factor (Pf/Pi) decreased as Pi increased but was always greater than 1.0. When data from both experiments were combined for regression analyses, inverse relationships were found between log10 (Pi + 1) and both plant growth and yield. These negative relationships were highly significant and adequately described by linear models. Final population (Pf) increased linearly with Pi. The wheat cultivar cv. Yecora Rojo was found to be highly vulnerable to damage and a good host for H. avenae. Fri, 01 Jan 1999 00:00:00 GMT http://hdl.handle.net/123456789/5249 Title: Evaluation of a a Nematode-Encapsulating fungi complex for control of meloidogyne javanica on potato<br/><br/>Authors: Al-Hazmi, A.S.; Ibrahim, A.A.M.; Abdul-Raziq, A.T.<br/><br/>Abstract: The efficacy of Nemout, a nematode-encapsulating fungi complex, was evaluated for control of M. javanica on potato in 3 greenhouse experiments. The efficacy of Nemout at 1.12, 2.24 or 3.36 kg/ha was evaluated on cv. Ajax in one experiment and comparisons with carbofuran (10 kg), fenamiphos (10 kg) and oxamyl (5 kg) were made on cv. Spunta in 2 other experiments. In all experiments Nemout significantly reduced the number of galls and eggs and increased tuber weight at the recommended rate of 1.12 kg, however, it was not as effective as the nematicides. The relative efficacy of Nemout to the average effect of all tested nematicides was 70% on galls and 74.9% on eggs. Fri, 01 Jan 1993 00:00:00 GMT