Quantifying the Most Suitable Irrigation Regime for Hymenocallis Speciosa Salisb. Plant Grown in Different Potting Media, Under Open Nursery Condition

Abstract

The aim was to quantify the water requirements of Hymenocallis speciosa Salisb. plants grown in different growing media, i.e. clay, sand/clay, sand/compost (2:1, v/v) and sand/sewage sludge (4:1, v/v) with supplying the plants with different irrigation levels (low, moderate and high) according to field capacity of each growing medium used in every irrigation to asses the most suitable irrigation level for producing the best vigorous plant growth as well as for reducing the amount of water used in agricultural production and determine the best growing media used for producing plants with high yield and quality. Accordingly, bulbs of an average weight of 46 g and 10 cm diameter were selected and planted on March 12 th in plastic pots of 30 cm diameter under open field conditions in both seasons. The results emphasized that sand/compost (2:1, v/v) was the best medium used for improving vegetative growth and root parameters as well as most flower traits, bulbs productivity and chemical constituents of plant leaves and bulbs. Besides, it proved its mastery in shortening the time required from planting to flowering. Meanwhile, sand/clay (2:1, v/v) and sand/sewage sludge (4:1, v/v) were less efficient in improving plant traits and occupied the second and third ranks, respectively. In contrast, clay medium gave the least efficiency in this concern comparing with the other media used in the two seasons. Also, great influence was noticed on the above mentioned traits due to supplying plants either moderate or high level in every irrigation. Meanwhile, the lowest irrigation regime gave an intermediate effects on the same traits. Therefore, and from the interaction it could be recommended to use sand/compost (2:1, v/v) medium in plantation with supplying plants the moderate irrigation level in every irrigation for achieving high plant quality of Hymenocallis speciosa Salisb. plant, besides save a good deal of water for other purposes.

Determining the Most Suitable Growing Medium and Irrigation Water Amount Needed for the Production of Some Foliage Ornamental Plants

“…In general, the previous results can be supported by those revealed by Saadawy et al (2011) on Ficus nitida 'Hawaii', Nofal et al (2014) Heidari et al (2022) stated that it is possible to replace expensive imported cocopeat, partly or whaley by either the palm trunk compost (prepared only from the date palm trunk) or the palm tree (composted from all date palm parts) to achieve the greatest stem diameter, bud diameter, bud length and quality index of lily cut flowers with the highest concentration of chlorophyll a, b and total carotenoids.…”

“…Marginata, Abdel-Fattah et al (2008) on schefflera, El-Sayed and El-Shal (2008) on schefflera, El-Sayed et al (2009) on Nephrolepis exaltata, Shahin et al (2009) on tuberose, Saadawy et al (2011) on Ficus 'Hawaii', Shahin et al (2012) on Schefflera, El-Sayed et al (2013) on Euonymus japonicus cv. Aureus, Nofal et al (2014) on Hymenocallis speciosa, O' Meara et al (2014) on Hydrangea macrophylla and Gardenia jasminoides, Said (2016) on Duranta erecta var. varigata, El-Fauly et al (2020) on Asparagus densiflorus 'Myers', El-Ghazaly et al (2021) on Gasteria carinata var.…”

PHYSIOLOGICAL STUDIES ON GERMINATION AND GROWTH OF OCHNA SHRUB. B- EFFECT OF IRRIGATION INTERVALS ON GROWTH AND QUALITY OF Ochna serrulata (HOCHST.) SEEDLINGS GROWN IN DIFFERENT MEDIA.

“…Marginata transplants grown in sand + loam (10%) + chicken manure (10 %) mixture and irrigated with 150 ml water/clay pot (15 cm diameter) scored the best vegetative and root growth, highest number and quality of new suckers and greatest concentrations of chlorophyll a, b and carotenoids in the leaves, as well as the contents of total carbohydrates, N, P and K in the leaves and roots. Parallel responses were also discovered by Moore and Broschat (2001) on areca palm, crossandra, pentas and philodendron plants, Shahin et al (2009) on tuberose, Saadawy et al (2011) on Ficus "Hawaii", Mazher et al (2012) on Amaranthus tricolor, Nofal et al (2014) on Hymenocallis speciosa and Said (2016) on Duranta erecta var. Variegata.…”

“…These findings, coincide with those obtained by Saadawy et al (2005) Likewise, Mazher et al (2012) reported that applying 200 g Nile compost/pot and irrigating every 2 days greatly improved growth and flowering of Amaranthus tricolor plant than adding 100 g/pot and prolonging water interval up to 4 or 6 days. On Hymenocallis speciosa, Nofal et al (2014) advised to use sand/ compost (2:1, v/v) mixture for planting and the moderate level for irrigation every 3 days for best growth and quality. Akhtar (2019) suggested that watering Calendula officinalis and Dianthus barbatus plants at 4 days interval recorded maximum values of plant height, stem diameter, root length, shoot fresh and dry weights, root dry weight, No.…”

Improving Growth of Schefflera Arboricola Endl. Cv. Gold Capella Plant Grown in Sandy Soil by Some Natural, Organic and Biotic Additives Under Various Water Regimes Treatments

“…Besides, the effects of interactions between growing media and irrigation on the growth and quality of potted ornamental plants were explored by Saadawy et al (2011) on Ficus nitida 'Hawaii', Mazher et al (2012) on Amaranthus tricolor, Nofal et al (2014) on Hymenocallis speciosa, Said (2016) on Duranta erecta var. variegata, Rydlova and Puschel (2020) on Gazania rigens, Pelargonium peltatum and P. zemale, El-Fouly et al (2020) on Asparagus densiflorus 'Myers', Shahin and Sayed (2021) on Ochna serrulata, on Ranunculus asiaticus var.…”