Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2008.517.524Zea mays L.) in Turkey]]>Pamuk MenguGulay OzgurelMustafa 42008114The objective of this study was to compare the responses
of maize (Zea mays L.) to deficit irrigation. A field experiment
was conducted during the 1999 and 2000 growing seasons in western Turkey.
Irrigation treatments were tested with 100, 70, 50, 30 and 0% replenishment
of water depleted at 120 cm soil profile from 100% replenishment treatment
at ten days intervals. The irrigation amount ranged between 0 and 323.20
mm in the first year and 0-466.61 mm in the second year of the experiment.
Seasonal crop water use values were between 142.19 and 481.91 mm in 1999
and 136.25-599.45 mm in 2000. Average maximum and minimum yields were
10639-10383 kg ha-1 for full irrigated treatment (I100)
and 3750-2136 kg ha-1 for non-irrigated treatment (I0)
in 1999 and 2000, respectively. Water deficit significantly affected maize
yield. In both years, yield increased linearly with irrigation applied
but the relationship varied from one year to the other. Water Use Efficiency
(WUE) ranged from 1.49 to 2.71 kg m-3, while Irrigation
Water Use Efficiency (IWUE) varied from 1.44 to 2.55 kg m-3
in both years. The yield response factor (ky) relating relative yield
decrease to relative evapotranspiration deficit was found to be 0.99 for
the data of the two experiments combined. Also, dry matter yields (DM)
and leaf area index (LAI) were markedly affected by the irrigation treatments.
The finding of this work showed that well-irrigated treatment should be
used for maize grown in semi arid regions under no water scarcity.]]>Acikgoz, N., M.E. Akba , A. Moghaddam and K. Ozcan, 19941994Cakir, R., 200489116Caldwell, D.S., W.E. Spurgeon and H.L. Manges, 19943710991103Cetin, O., 19961996Cosulluela, F. and J.M. Faci, 19927169194Dagdelen, N., E. Yilmaz, F. Sezgin and T. Gurbuz,2006ossypium hirsutum L.) and second crop corn (Zea mays L.) in western Turkey.]]>826385Doorenbos, J. and A.H. Kassam, 19791979Fao, 20062006Farre, I. and J.M. Faci, 2006Zea mays L.) and sorghum (Sorghum bicolor L. Moench) to deficit irrigation in a Mediterranean environment.]]>83135143Gardner, F.P., R.B. Pearce and R.L. Mitchell,1995Gencoglan, C.,19961996Heerman, D.F., 19851985pp: 323334Howell, T.A., A. Yazar, A.D. Schneider, D.A. Dusek and K.S. Copeland,19953817371747Igbadun, H.E., H.F. Mahoo, A.K.P.R. Tarimo and B.A. Salim, 200685141150Istanbulluoglu, A. and Kocaman, 19961996Kanber, R., A. Yazar and M. Eylen, 19901990Karam, F., J. Breidy, C. Stephan and J. Rauphael, 200363125137Katerji, N., J.W. Hoorn, A. Hamdy, F. Karam and M. Mastrorilli, 199630237249Koksal, H.,19951995Koksal, H. and R. Kanber, 19981998pp: 310317Lamm, F.R., D.H. Rogers and H.L. Manges, 19943714911497Moser, S.B., B. Feil, S. Jampatong and P. Stamp, 2006814158Musick, J.T. and D.A. Dusek,1980239298Panda, R.K., S.K. Behera and P.S. Kashyap, 200466181203Pandey, R.K., J.W. Maranville and A. Admou,200046113Payero, J.O., S.R. Melvin, S. Irmak and D. Tarkalson, 200684101112Pereira, L.S., 20062006Shaozhong, K., S. Wenjuan and Z. Jianhua, 200067207214Steele, D.D., E.C. Stegman and B.L. Gregor, 19943711971203Steele, D.D., B.L. Gregor and J.B. Shae, 199740149155Stegman, E.C., 198629203210Tolk, J.A., T.A. Howell and S.R. Evett,199890447454Yazar, A., S.M. Sezen and B. Gencel,200251293300