Effects of different substrates on quantitative characteristics of cucumber Negin cultivar in hydroponic irrigation system

In order to determine the effects of different substrates on quantitative characteristics of greenhouse cucumber of Negin cultivar and also to study the possibility of mixing of perlite in different substrates، an experiment laid out in a randomized complete block design with nine treatments and four replication was carried out in a personal greenhouse in 2010. Characters including yield، the number of fruit، plant high، were measured and examined during this experiment. The results showed that different substrates significantly affected many measured characteristics as follows: peat moss with 2998 gr of fruit weight had the highest yield and leca with 355 gr of fruit weight had the lowest yield between the whole treatments. And also between the treatments، peat moss with 54 numbers of fruit per pot had the most fruit number and leca with less than 8 fruit number per pot had the least number of fruit averagely. Peat moss with the average of 179 cm had the highest high and leca with 56. 5 cm had the lowest high between the substrates. The results also showed that the mixed perlite made some changes in the most measured characters in substrates compared to the pure one.