Response of pistachio (P. Vera)‎ transplants to varying levels of water, media cultures and phosphorus : 1-vegetative growth characteristics

الملخص EN

The study was carried out during 2009 at the nursery of Horticulture/ Agriculture-University of Duhok-Kurdistan Region to investigate response of two years and pistachio transplants grown in two levels of irrigation (25 or 50 %) of soil available water capacities were depleted, three varying culture media (1:1, 2:1 river loamy soil : peatmoss besides check loamy river soil only and five P2O5 concentration (0,100, 200, 300, 400mg.P.L-1.

Pots-1).

The parameters were studied (stem height, stem diameter, leaf number, leaf area ,leaf fresh and dry weights).

The results showed that the irrigation of transplant at 25% significantly increased ,stem diameter, leaf area ,leaf fresh and dry weights (6.13mm, 31.77cm2, 3.77g, 1.49g) respectively.

While, media cultures( 2:1) affected significantly all parameter (80.27cm, 6.16mm, 35.17, 32.1cm2, 4.21g, 1.71g) respectively.

P concentration 200mg increase all studied parameters (78.28cm, 6.49mm, 35.39, 34.58cm2,4.30g, 1.66g) respectively.

However, all interactions led to significant increase of all parameters.

The best treatment was 25%water + 2:1 river loamy soil to peatmoss +200mg.L-1.Pots-1 which gave the highest means of most studied parameters (8.01mm,43.33, 3.73 cm2, 4.77g and 2.10g)respectively.

While,50%+2:1+300mg.L-1 increased stem length (97.33cm