The aim of this research is to determine the best date and culture medium for the
production of big rolls consisting of seed mixture (Lolium perenne, Festuca Arundinacea,
Festuca rubra, Poa partensis) with the lowest costs. Seven different mediums
were
experimented in two different culture dates (15 September and 1 April).
The results showed that the mediums consisting of turf or spent mushrooms compost
gave the best germination rate (78-84%) in the two culture dates. They also gave ready big
rolls in a period of time less than in the other mediums (78-102 days). The mediums also
gave the best quality of big rolls in terms of light weight (41.96- 53.89 kg/m2), coverage
rate (93-98%), and color.
The medium that consisted of spent mushroom compost achieved an economic
increase higher than that in the other mediums, where the coefficient of profitability in the
former was (194.4%).
This study was carried out on three rootstocks of Crataegus monogyna Jacq.
With one seed containing fruit C.oxycantha L. with three seeds as well as C.
azaraolus Borkh, to identify the best method of Crataegus propagation.
The hardwood cuttings of
C.azarolus Borkh rooted in a IBA solution (4ooo
ppm)showed the highest rooting percentage 20% when grown in sand as well as
peat moss containing fermented arganic manure media.
The research was conducted in the ornamental plants laboratory, Faculty of
Agriculture, to determine the best seed germination conditions of Sophora japonica and S.
secundiflora. Different seed pre-treatments (cold ater (6oC) and warm water (50oC)
immersing, Citric acid (2%) and Sulphoric acid (25, 50%) stratification) were
experimented. The effect of different culture mediums and sowing times were also
investigated.
The results indicated that the chemical pre-treatments represented the highest relative
germination rates compared to the physical pre-tretments. Among the physical pretreatment,
the seed immersed in hot water for 2h showed the highest germination
percentage (38,6 – 30%) for S. japonica and S. secundiflora respectively. While, the seed
treated with sulphoric acid represented the best germination percentage for the tow species
(58,3 – 63,6%). Nevertheless, the increase of the sulphoric acid concentration had a
negative impact on survival plantlet rates for the tow species, specially for S. japonica.
The results showed that the seed sowing in sand with soil and organic mature (1:1:1)
medium realized the best germination percentage for the tow studied species.
