Articles
PRODUCING HIGH QUALITY PETUNIA PLANTS GROWING UNDER DIFFERENT MEDIA
Article number
970_19
Pages
177 – 187
Language
English
Abstract
Results of this study showed that peatmoss/peanut shell (P/PS) media containing acetic or citric acids yielded the highest values of the studied characters.
The highest values of fresh and dry weights (FW and DW) were obtained when P/PS media contained acetic acid.
Conversely, the greatest flower numbers were noticed with the same media but treated with citric acid.
There were positively significant correlations between FW and DW from one side and pH and easily available water (EAW) from the other and negatively with electrical conductivity (EC) of media mixes.
Positive significant correlation coefficients were also observed between the total flower numbers and the available water (AW), pH and N and K contents.
Alternatively, the correlation was negative with EC and P content.
In the investigated media mixes irrigated with acidified irrigation water, the growth characters of Petunia plants positively correlated with water content at field capacity (FC), wilting point (WP) and EAW, which reflected on the media ability to store water and to supply Petunia plants by their needs for metabolism activities.
The highest values of fresh and dry weights (FW and DW) were obtained when P/PS media contained acetic acid.
Conversely, the greatest flower numbers were noticed with the same media but treated with citric acid.
There were positively significant correlations between FW and DW from one side and pH and easily available water (EAW) from the other and negatively with electrical conductivity (EC) of media mixes.
Positive significant correlation coefficients were also observed between the total flower numbers and the available water (AW), pH and N and K contents.
Alternatively, the correlation was negative with EC and P content.
In the investigated media mixes irrigated with acidified irrigation water, the growth characters of Petunia plants positively correlated with water content at field capacity (FC), wilting point (WP) and EAW, which reflected on the media ability to store water and to supply Petunia plants by their needs for metabolism activities.
Publication
Authors
M. Abd El-Hady, N.T. Shanan
Keywords
organic and inorganic acids, media, Petunia hybrid L., peatmoss, peanut shell
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