The Effect of Plant Density in The Productivity of Some Genotypes of Maize (Zea mays L.)

This study was carried out in the farm of the Faculty of Agriculture University of Damascus during the growing season 2014, to study the productivity of the maize cultivar ("Gouta 82) and the hybrids (Basel 1 and Basel 2) under the influence of two plant densities 17.53 thousand plant. ha-1 (70x20cm) and 53.11 thousand plant. ha-1 (70x40cm).

Effect of plant density on some productivity characters of two varieties of faba bean Vicia faba L. under the Syrian Coast conditions

This research was carried out at a special farm at Balghounis - Banias during the agricultural season 2013/14 to study the of effect plant density and variety and the interaction between them on some productivity characteristics of faba bean plant. Two faba bean varieties were used : Balady (local variety) and Italian Super Simonia (new variety in Syria). Five densities (20, 10, 6.67, 5, 4) plants/m2 were studied. A split plot design with three replications was used, in which varieties were assigned to main plots and densities to sub plots. The GenStat 12 program was used for statistical analyses. The results indicated that Balady variety significantly surpasses the Italian one in plant height during maturity stage. Also Balady variety showed a significant increase compared to Italian variety in number of branches/plant, number of pods/plant and 100- seed weight. On the other hand, Italian variety significantly surpasses the Balady one in number of seeds/pod and seed yield, and it showed a significant increase compared to Balady variety in seed weight per plant. Increasing of plant density led to an increase of plant height and a decrease of number of branches/ plant, number of pods/plant and number of seeds/pod. Decreasing of plant density led to decrease of 100-seed weight and seed yield.

Effect of Phosphate Fertilizer and Plant Density On Some Productive and Quality Traits of Coriander Coriandrum sativum L.

The lack of information about the cultivation of coriander plant in Syria prompted us to study the effect of four plant densities (33.33،10، 13.33 and 20 plant/m2)، and four levels of phosphate fertilization (0107.2،160.8، and 214.4 of Superphosphate 46%) on some productive and quality traits of the coriander plant. This study was carried out in Tartous province during the growing season 2014، using Randomized Complete Block design with a Split Plot arrangement of treatments. The Results revealed that there were significant differences between the treatments for the whole traits، in addition to a significant interaction between density and phosphate fertilization. Although the densities (10، 13.33 and 20 plant/m2) varied in their effect، they had superiority upon the control(33،33)plant/m2، and the density 10 plant/m2 had more important effect in terms of increasing each of: branches number/plant، seed weight/plant، seeds number/inflorescence، protein content in plants and seeds and beta carotene and chlorophyll. However، the level 160.8k.g/h of P2O5 increased the number of inflorescences/plant، number of fruits/plant and seed weight/ inflorescence.

A Study Some Physiological and productive Parameters for Peanut Cultivars under Effects of Row Spacing and Number of Plants per Hill

The search was conducted in Dabba site for Agricultural Scientific Research at Lattakia region in the growing season 2011 to study some physiological and productive parameters for peanut cultivars under the row spacing effect and number of plants per hill, the experiment was designed by using split-split plot design with three replications. The treatments of experiment included four cultivars of peanut (ICGV 92022, C16 local 262, Souri, Al-Baladi) and three row spacing (40, 60, 80 cm) and two levels of number of plants hill-1 (one plant hill-1, two plant hill-1).

Effect of Row Spacing and Number of Plants per Hole on the Yield and Yield Components for Some Peanut Cultivars under Local Conditions

The research was conducted in Dabba site for Agricultural Scientific Research at Lattakia region in the growing season 2011 during the period from early June to mid-October. The experiment included four cultivars of peanut (ICGV 92022, C16 local 262, Souri, Al-Baladi), three row spacing (40, 60, 80 cm), and two levels of number of plants per hole-1 (one plant per hole-1, two plants per hole-1). The experiment was designed by using split-split plot design with three replications. The results of the study showed that Al-Baladi variety was superior to all other cultivars in weight pods/plant (108.8 g), weight seeds/plant (56.8 g), weight 1000 seed (914.7 g) with yield of seeds reaching (3529 kg/h). On the other hand, ICGV 92022 was superior in number of mature pods (29.22 mature pod), in number of seeds/plant (53.90 seed) and in yield (3058 kg/h). Regarding the effect of row spacing, the spacing 80 cm between rows had given the highest values significantly for yield attributes in comparison with row spacing 40 and 60 cm. Yet the highest yield per unit area obtained with row spacing was 40 cm. As about the effect of number of plants per hole-1, two plants hole-1caused significant decrease in yield attributes and significant increase in seed yield in comparison with one plant hole-1

Effects of Plant Density and Nitrogen Rate on Plant Growth Characters and Grain Yield of Maize (Bassel 2 Hyb.)

Objective of this work was to investigate how plant density and nitrogen rate affects the growth , yield and its components in maize (Bassel 2 hybrid). The experiment was carried out, at the agricultural research centre in Snoubar Jableh, during the 2008 and 2009 seasons, included 12 treatments which were the combination three plant population densities 71428/ha, 57142/ha, and 47619/ha and four N rates (0, 60, 120 and 180 kg/ha). The experimental design was a split-plot, with different densities as main plots, randomized in three complete blocks, and the fertilization as subplots. The data were analyzed by using “Mstat” statistical package. Increasing planting population density delayed anthesis and silking date, increased the anthesis-silking interval, plant height, ear height, grain yield, agronomic nitrogen efficiency and nitrogen use efficiency, but decreased ear leaf area, chlorophyll content, 1000 seed weight, number of grains/ear, shelling percentage (%), and grain protein content. Nitrogen fertilizer decreased tassilling and silking date, and nitrogen use efficiency, increasing plant and ear height, ear leaf area, chlorophyll content, number of grains/ear, ear weight,1000-grains weight, Shelling percentage, grain yield up to 120 kg N/ha, agronomic nitrogen efficiency and grain protein content.