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Standardisation of agrotechniques in phalaenopsis orchids
The present study entitled “Standardisation of agrotechniques in Phalaenopsis orchids” was carried out at the Department of Pomology and Floriculture, College of Horticulture, Vellanikkara from May 2011 to April 2012. The studies were conducted to find out the best plant type and environment suited...
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| Формат: | Ph.D Thesis |
| Язык: | Undetermined |
| Опубликовано: |
Vellanikkara
Department of Pomology and floriculture,College of Horticulture,
2012
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| Итог: | The present study entitled “Standardisation of agrotechniques in Phalaenopsis
orchids” was carried out at the Department of Pomology and Floriculture, College of
Horticulture, Vellanikkara from May 2011 to April 2012. The studies were conducted to
find out the best plant type and environment suited for commercial cultivation of
Phalaenopsis and to standardise the agrotechniques like type of pot, growing media and
growing method for better plant growth and quality spikes.
The study involved comparison of 32 treatment combinations involving two plant
types, two types of pots, two types of potting media, two growing conditions and two
methods of growing. The experiment was laid out in CRD with three replications.
Various vegetative and floral characters were recorded, analysed and correlated with
weather parameters.
Results indicated that of the two growing structures used in the study i.e., fan and
pad and rain shelter, the latter promoted vegetative growth manifested by enhanced leaf
length, leaf breadth and leaf area. Plant height was not influenced in both the situation.
The plant types viz., pot plant and cut flower, differed in their growth rate. Pot
plant type recorded higher growth rate in terms of length, breadth and area of leaf but per
se length, breadth and area of leaf was higher in cut flower type.
Regarding the media, brick + coconut husk bits was found better for vegetative
growth as compared to brick + charcoal. The other two factors, method of growing and
type of pots did not affect the vegetative growth. But root growth outside the pot was
recorded more in black pot compared to that on white pot.
Percentage of flowering was also influenced by growing structure, type of plant
and media. Plants grown under fan and pad, pot plant type and brick + coconut husk bits
medium recorded higher flowering percentage than those under rain shelter, cut flower
and brick + charcoal medium.
Correlation values with weather parameters indicated positive correlation
between increase in leaf area and minimum temperature under rain shelter and fan and
pad system whereas negative correlation with light intensity was seen under fan and pad
system. Considering the overall effect by pooled analysis, only minimum temperature
had a significant influence on increase in leaf area. |
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| Объем: | 87 |