Effect of cultivar, Potassium soil fertilization and Zinc spraying on flowering growth and yield parameters of Rice

	Effect of cultivar, Potassium soil fertilization and Zinc spraying on flowering growth and yield parameters of Rice
journal of kerbala university
Article 1, Volume 2, Issue 4, 2006, Pages 438-448 PDF (0 K)
Abstract
An experiment was conducted at Al- Mishkhab Rice Research Station for growing season of 2001 and 2002. The aim was to study the effect of three cultivars of Rice, viz. (Al- Somood, Yasmin and Al- Bernamag 4) and Fertilization levels (Soil application by K and foliar application by Zn), 8 treatments were used: 1. Control: with out any fertilization. Neither K application nor Zn application. 2. K as K2SO4 at rate of 30 Kg D. 3. 0.5 Zn as ZnSO4.7H2O. (0.5 g L. water). 4. 0.5 Zn + K. 5. 1.0 Zn at conc. of (1.0 g L. water). 6. 1.0 Zn + K. 7. 1.5 Zn at conc. of (0.5 g L. water). 8. 1.5 Zn + K. Zinc spraying was adopted twice at the age of 35 and 65 days with conc. of 100 L D. each. Split- plot design was used. Treatments were spread as Randomized Complete Block Design (R.C.B.D.) with three replicates. Duncan's Multiple Range Test was used to compare means at probability levels of 5%. Results can be as fellows:- 1. The combination for K and Zn (when K adopted into the soil at a rate of 30 Kg D. and Zn sprayed at a conc. of 1.0 or 1.5 g L. water) produced the highest values for flowering parameters studied and productivity for both growing seasons. 2. Al- Somood cv. produced the highest values of spike length, weight of 1000 seeds for the two seasons and the highest productivity for the first season compared to other varieties, mean while, Al- Bernamaj 4 produced the highest values in productivity for the second season. There were no significant differences for varieties in number of spikes for both seasons and number of seeds per spike and setting percentage for the first seasons only. 3. The interaction between Al- Somood cv. And fertilization by K and spraying by Zn. at conc. of (1.0 g L.) produced the highest productivity (1745.0 and 2020.8 Kg D.) for the two seasons, respectively.

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