Improving Hydrophysical Properties Quality of Compost

M Abd El-Hady, Water Relations, Field, Abd El-Hady, M Ebtisam, I El-Dardiry
2006 Journal of Applied Sciences Research   unpublished
Soilless culture is in the process of becoming an important part of green houses. Two types of material used as horticultural materials, compost and perlite, were chosen to investigate to somewhat one can improve their hydrophysical properties and hence its quality. Different mixture ratios between two materials were carried out as follows: 100:0, 75:25, 50:50, 25:75 and 0:100 , compost : perlite. The different hydrophysical properties were determined. The obtained results revealed that
more » ... vealed that increasing perlite in mixture could improve total pore space, free air space and easily available water. Increasing perlite has a significant negative effect on water buffering capacity in mixture, while it improves hydraulic conductivity after mixing with compost at all the studied ratios. The highest water retention capacity values were obtained from ratios 75:25 (82.78 %), followed by 50:50 (76.62 %) and 25:75 (48.97 %) compost : perlite ratio , respectively. Improvement of hydrophysical properties of compost through enriching by perlite led to more effective irrigation and fertilization strategies and develop structures that could hold adequate water supply for plant and enough and good aeration.
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