Rooting of stem cuttings of five pomegranate types selected from Delibekirli village, Kırıkhan (Antakya, Hatay-Turkey) taken in different periods under mist-propagation were investigated. The cuttings were prepared as 20-25 cm in length from wood shoots, and 1,000 ppm indolebutyric acid (IBA) was used as a rooting hormone. In the study, rooting ratio (%), root number, and root length of the cutting were measured. Among the cuttings rooted, the highest rooting percentage was observed in 31-N-01, while the lowest rooting percentage in 31-N-05. The cuttings taken at the end of February had higher rooting percentage than those taken at the beginning of October. The 1,000 ppm IBA treated cutting had a slightly higher rooting percentage than the control. The number of roots was highest in the cutting of the 31-N-01 type and lowest in the cutting of the 31-N-05 type. There were higher roots in the 1,000 ppm IBA treated cuttings than the control cuttings for the 31-N-01, 31-N-02 and 31N-03 types whereas the 31-N-04 and 31-N-05 types had lower roots in the 1,000 ppm IBA treated cuttings than the control cuttings. 31-N-01 type when compared to others gave more favorable results in terms of root length. The 1,000 ppm IBA treatment affected positively rooting percent of cuttings and the other characteristics although it was not to the satisfactory level. It was concluded that the increasing dose of IBA could be useful. Www.actahort.org/books/818/818-27.htm

Indole-3-Butyric Acid (IBA) is used in the same manner as IAA and is accepted around the world as a propagating and rooting hormone for ornamental and fruit graftings and cuttings.
Indone-3-Butyric Acid appears to be the most practical of the indole Alkonic Acid Series and is especially effective for initiating roots of both stems and leaves.
IBA is a white or tan powder or crystalline solid which exhibits the reactions characteristic of an organic acid. It is insoluble in water bot soluble in alkali metal hydroxides and carbonates and in common organic solvents. In the agricultueral chemical field Indole-3-Butyric Acid is used to promote the rooting of plant cuttings and the ripening of fruit.ater absorption of the cells. IAA causes a fairly rapid increase in the cell wall extensibility in coleoptiles and young stems.
This study investigated the influence of different rooting media and indolebutryic acid (IBA) hormone concentration on root and shoot development in stem cuttings of Warburgia ugandensis. Stem cuttings were treated with three different levels (0.3, 0.6 and 0.8% w/w) of IBA concentration (including a control- no IBA hormone) and propagated in three rooting media (milled pine bark, top forest soil and sand) under non-misting propagators. Data on root and shoot development, callusing, number and length of roots and shoots were analyzed using analysis of variance (ANOVA) and Chi square test. Callusing, root and shoot development were significantly (p<0.05) influenced by rooting media and IBA concentration. Milled pine bark and 0.8% w/w IBA concentration gave the highest percentages of stem cuttings that callused, rooted and shooted (38, 37, 41% and 57, 41, 59%), respectively. Similarly, milled pine bark and 0.8% w/w IBA concentration gave the greatest number and longest roots and shoots per stem cutting. Vegetative propagation of W. ugandensis through stem cuttings can be appropriately achieved by treating the cuttings with 0.8% w/w IBA hormone using milled pine bark as a growth medium. Chemical thinning of apple fruitlets is an indispensable technological practice in contemporary apple production. Thinning increases the percentage of first class fruit and promotes annual cropping (DENNIS 1986). NAA was one of the first products developed for apple fruit thinning and continues to be widely used today (WESTWOOD 1993). NAA application to some 'Delicious' types fails to increase fruit size even though fruit abscission may be induced (GREENE 1943).
HOFFMAN & al. 1955 observed an increase in under developed, misshapen fruit in some 'Delicious' cultivars after thinning with NAA. BUKOVAC & al. 1994 attempted to enhance fruit growth in NAA-treated 'Delicious' by addition of 6- benzyladenine (BA). The combination of NAA (15 ppm) and BA (25-100 ppm) on
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Redchief 'Delicious' resulted in excessive production of commercially unacceptable small fruit.
CPPU has been reported to also affect fruit set and size in apple (CURRY &
GREENE 1993). Full bloom application of CPPU affected fruit growth similar to that reported for BA. We were interested in determining if CPPU, when combined with NAA, would enhance fruit growth in the small-fruited cultivars of Red
'Jonathan', 'Gala' and 'Elstar' or have a negative effect on fruit size as observed in
Red 'Delicious'.
A b b r e v i a t i o n s : NAA = 1-naphthaleneacetic acid, CPPU = N-(2-chloro-4-pyridinyl)-
N'-phenylurea