ABSTRACT Peat is considered the conventional growing medium in most soilless culture systems. The high cost of peat and the urgent need of agricultural wastes recycling encouraged the scientists and soilless culture users to search for an alternative growth medium where optimal growth conditions are achieved and help in the safe disposal of wastes. In the current study, peanut shell (PS) and corn wastes (CW) were used as growing media in comparison to peat moss (PM). The tested organic wastes and peat moss were examined with sand at three mixing ratios (1:1 “M1”, 1:2 “M2” and 1:3 “M3” raw material: washed sand, respectively). Red radish (Raphanus raphanistrum subsp. sativus) plant were cultivated in 5 kg pots filled with the instigated growing media. Most of the recoded growth parameters were found in PS and PM growing media, while the lowest ones were found in CW. PS medium contained available N and P higher by 141 and 29% above the PM media. Although the peat moss gave the highest values in the measured growth characteristics, its high price decreased the net profit. The highest net profit value was obtained from PSM2 followed by PSM1 and PSM3. According to the obtained results, the characteristics of the growth media derived from peanut shell qualify them for use in the production of red radish in soilless culture systems.

中文翻译：

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玉米废料和花生壳作为无土系统生产红萝卜植物的生长介质

摘要 泥炭被认为是大多数无土栽培系统中的常规生长介质。泥炭的高成本和农业废物回收的迫切需要鼓励科学家和无土栽培用户寻找可实现最佳生长条件并有助于安全处置废物的替代生长培养基。在当前的研究中，与泥炭苔藓 (PM) 相比，花生壳 (PS) 和玉米废料 (CW) 被用作生长介质。用沙子以三种混合比例（分别为 1:1“M1”、1:2“M2”和 1:3“M3”原料：水洗沙子）检查测试的有机废物和泥炭苔藓。红萝卜 (Raphanus raphanistrum subsp. sativus) 植物在 5 kg 盆中培养，盆中充满了激发生长的培养基。大多数记录的生长参数在 PS 和 PM 生长培养基中发现，而最低的是在 CW 中发现的。PS 培养基含有的有效氮和磷比 PM 培养基高 141% 和 29%。尽管泥炭藓在测得的生长特性中给出了最高值，但其高昂的价格降低了净利润。最高的净利润值来自 PSM2，其次是 PSM1 和 PSM3。根据获得的结果，来自花生壳的生长培养基的特性使它们有资格用于无土栽培系统中的红萝卜生产。