الفهرس 
Effect of Salinity, Gibberellic Acid and Bio-fertilizers on Yield and oil Production of Chamomile ( Matricaria chamomilla, L).Only 14 pages are availabe for public view
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Abstract
Two pot experiments were carried out at nursery of the Department of Floriculture, Ornamental Horticulture and Landscape Gardening of Faculty of Agriculture El-Shatby, Alexandria University, Egypt during the two seasons of 2015/2016 and 2016/2017 to
investigate the effects of water salinity, spraying with gibberellic acid, biofertilizer applications and their interactions on plant growth, flowering and flower and oil yield and
their attributes of chamomile ( Matricaria chamomilla, L.) plants.
Split– split plot design with three replications was used in the two seasons.
Three water salinity levels, i.e. 0, 3 and 6 dsm-1 were assigned to the main plots, three gibberellic acid concentrations, i.e. 0, 100 and 200 mg L-1 were allocated to sub- plots in
the three times (30,45 and 60 days after transplanting) and three biofertilizer levels,i.e.0, 5 g nitrobein + 5 g phosporein and 10 g nitrobein + 10 g phosporein / pot) applied in the two
seasons (immediately at transplanting and one month later) were distributed in the sub-sub plots. Data of the experiment continued from the start of October to the end of May for the
first and second seasons.
The obtained results could be summarized as follows:
I Vegetative growth:
1. Plant height (cm):
- Increasing salinity up to 6 dsm-1
gradually decreased plant height in both seasons.
- Spraying of GA3(100 and 200 mg L-1) produced the tallest plants.
- Application of biofertilizer at 10 g nitrobein + 10 g phosporein / pot produced the tallest plants in the first and second seasons, respectively.
-The tallest plants resulted from irrigation with fresh water combined with spraying with GA3 and biofertilizer application.
2. Number of total branches / plant:
-Saline water significantly decreased number of total branches/ plants.
-Spraying 200 mg L-1 GA3 produced the highest number of total branches/ plant.
-Spraying gibberellic acid combined with biofertilization produced
maximum number of total branches /plant under fresh or saline water.
3. Number of leaves / plant:
- Saline water (6dsm-1
) produced the lowest number of leaves/ plant.
- Spraying plants with GA3 increased number of leaves/ plant in the two seasons.
- The highest number of leaves/ plant resulted from irrigation with fresh water, GA3 and biofertilizer application.
4. Plant fresh weight/plant (g):
- The lightest fresh weight resulted from irrigation with tap water .
- Spraying plants with GA3 significantly increased plant fresh weight.
- Biofertilized plants with 10 g nitrobein + 10 g phosporein / pot produced maximum plant fresh weight.
- Maximum plant fresh weight resulted from irrigation plants with fresh or moderate saline water (3dsm-1
)combined with spraying with GA3 and biofertilizer application.
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5. Plant fresh weight yield (ton/fed.):
- Saline water (6 dsm-1
) produced the lowest plant fresh weight yield / fed.
-Spraying of plants with 100 or 200 mg L-1 GA3 produced the highest fresh weight yield / fed.
- Biofertilization application significantly increased plant fresh weight yield/fed.
- Irrigated plants with fresh or saline water (3dsm-1)combined with GA3 and
biofertilizer application showed maximum plant fresh weight yield/ fed. in the two seasons.
6. Plant dry weight /plant (g):
- The lightest plant dry weight resulted from irrigation with tap water.
- Spraying of plants with 200 mg L-1 GA3 significantly increased plant dry weight.
- Average increase plant dry weight in the two seasons (0.74 g) resulted from
biofertilizer application.
-Irrigated plants with different water salinity combined with GA3 spraying and biofertilizer application produced the heaviest plant dry weight.
7. Plant dry weight yield (ton/fed.):
- Saline water decreased dry weight /fed. in the first seasons.
-Spraying of plants with GA3 increased plant dry weight yield in the second season.
- Biofertilization increased plant dry weight yield /fed. in the first and second seasons, respectively.
- Irrigated plants with fresh water or moderate saline water (3dsm-1) combined with gibberellic acid and biofertilizer application produced maximum plant dry weight yield/fed. in the both seasons.