Effect of Irrigation Intervals and Potassium Levels on Some Parameters of Corn crop growth | ||
| Euphrates Journal of Agriculture Science | ||
| Article 1, Volume 6, Issue 4, September 2014, Pages 369-380 | ||
| Abstract | ||
| Abstract: To study the effect of irrigation intervals, irrigation after 5, 10 and 15 days and potassium levels (0, 120 and 240 ) Kg K . ha-1 on some growth parameters of corn (Zea mays L.) crop . Field experiment was conducted at College of Agriculture – University of Baghdad in Summer season 2013 . Experimental unit area was 10 m2 (2.5m × 4m) , withthree Furrows at every experimental unit in a Randomized Complete Block Design (RCBD) at three replications. 120 Kg P ha-1 was added at sowing time and 240 Kg N ha-1 added at three stage of plant growth with the addition of potassium levels ( at vegetative growth , inflorescences and at tasseling stage ) .Quantities of water were calculated for every treatment ( 5,10 and 15) days using 675 mm season-1 water requirement . The results showed that using 15 days asirrigation period significantly decreased plant height , leaves area and chllorophyl content at present of 11.8 , 31.0 and 19.6 respectively for (T3) treatment compared to (T1) ,while proline concentration significantly increased with increasing the period from 5 days to 15 days at percent of 84.5 % . Potassium level (K2) increased plant height ,leaves area and chllorophyl content at leaves significantly at percent of 27.9 , 3.4 and 23.4 respectively compared to control treatment (K0) . Proline concentration decreased significantly with increasing potassium level .All interactions between irrigation periods and potassium levels had a significant effect all above parameters . | ||
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