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First record of oilfish, Ruvettus pretiosus [Actinopterygii, Gempylidae], off the coast of Benghazi, Libya [southern Mediterranean]

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Elbaraasi H., Elmariami M., Elmeghrabi M., Omar S.

Acta Ichthyologica et Piscatoria

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2007

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tom 37

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nr 1

67-69

The first record of oilfish, Ruvettus pretiosus Cocco, 1829, (Gempylidae) from the depth of 65 m, caught off the coast of Benghazi, Libya (Southern Mediterranean), is reported herewith. The present finding appears to be an evidence of the extension in the latitude of its geographical distribution.

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The effect of nitrogen fertilization on the physical features, yield and chemical composition of sugar beet roots

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Szklarz J., Wojcik S., Omar S.

Zeszyty Problemowe Postępów Nauk Rolniczych

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1993

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tom 399

251-254

Three years field experiments were carried out in order to estimate the influence of differentiated nitrogen fertilization on physical features, yielding and some elements of chemical composition of sugar beet. The highest yields of roots were found in roots when 120 and 160 kg N/ha were used. The nitrogen fertilization has significantly modified the hight of protrusion of roots above the soil level. The value of yielding coefficient indicate that nitrogen fertilization affected more leaves yield than roots yield.

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Physical features and yield of sugar beet depending on the composition of seed coat

100%

Szklarz J., Wojcik S., Omar S.

Zeszyty Problemowe Postępów Nauk Rolniczych

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1993

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tom 399

247-250

The aim of experiment carried out at Agricultural Experimental Station in Felin was evaluation of some industrial wastes as a component for seed coating. The experiment regarded comparison of yield and physical features of sugar beet affected by different seed coat composition. It has been found, that magnesium oxide commonly used in seed coating can be successfuly replaced by other components. The highest yield of sugar beet roots (49.6 ton per hectare) has been obtained when seed coat was made of alkaline magnesium carbide from wastes GA-8. High yield of roots there were stated as well in objects, where as a seed coat were used pure magnesium carbide (42.7 t/ha) and ashed magnesium shavings (47.1 l/ha). The best technological quality of roots has been stated in object 3 (ashed magnesium shavings), where dry mass and sugar content were highest (22.3 and 18.0 percent respectively). Moreover there were law quantity of soluble ash (0.475 %) and alpha-amine nitrogen (0.0268 %). Biological yield of sugar from this object was highest and reached 8.48 t per hectare.

Ograniczanie wyników

2 Zeszyty Problemowe Postępów Nauk Rolniczych

1 Acta Ichthyologica et Piscatoria

3 Omar S.

2 Szklarz J.

2 Wojcik S.

1 Elbaraasi H.

1 Elmariami M.

1 Elmeghrabi M.

1 2007

2 1993

First record of oilfish, Ruvettus pretiosus [Actinopterygii, Gempylidae], off the coast of Benghazi, Libya [southern Mediterranean]

The effect of nitrogen fertilization on the physical features, yield and chemical composition of sugar beet roots

Physical features and yield of sugar beet depending on the composition of seed coat