Three Introduced Rice Cultivars response to Watering periods and Fertilization Levels on its flowering and productivity.
journal of kerbala university,
2005, Volume 1, Issue 1, Pages 9-27
AbstractAn experiment was conducted at Al- Mishkhab Rice Research Station for growing season of 2001. The aim was to study the response of three new introduced rice cultivars to Iraq. i.e.Al Somood; Yasmin and Al - bernamag.4 under the effect of watering periods ( Continuous flooding “control“ and watering applied to two intervals, after 5 and 10 days ) and fertilization levels ( soil application by K and foliar application by Zn. Four treatments were used. ( control; K ( 30 kg/Donum; 2K ( 60 kg/ Donum and K+Zn ( 30 kg / Donum + 1.0 g/L., respectively ).
Split – Split plot Design was used with three replicates. Duncans Multiple Rang Test was used to compare means at probability level of 5%.
* Five flowering growth parameters, i.e.panicle length; panicle number per plant; branch number per panicle; seed number per panicle and setting percentage, besides productivity parameters,i.e. weighe of 1000 seeds and yield, were studied. Results indicated that:
- Rice plants grown with continuous flooding gave significantly higher values in panicle length; panicle number per plant; seed number per panicle; setting percentage and productivity compared to the other irrigation treatments.
- Al- sommood and yasmin cultivars produced the highest values in flowering parameters, meanwhile, Al-somood cultivar gave the highest values in productivity parameters.
- Fertilization treatments had insignificant effects on flowering parameters, but ( K+Zn ) treatment produced significant effect on productivity parameters.
- The interaction between continuous watering and Al- Somood cv. with ( K + Zn ) treatment produced the highest values for the studied parameters.
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