Effect of Potassium Fertilizer on Yield, Yield Components and Grains Quality Characters Of Rice | ||||
| Journal of Plant Production | ||||
| Article 23, Volume 10, Issue 12, December 2019, Page 1123-1130 PDF (1.38 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2019.77766 | ||||
 View on SCiNiTO | ||||
| Author | ||||
Nessreen N. Bassuony  
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| Rice Research Section, Field Crops Research Institute, A.R.C., Giza, Egypt. | ||||
| Abstract | ||||
| This study evaluated the effect of times and rates of potassium application on yield and grain quality characters of Giza179 cultivar during 2017 and 2018 seasons using this new variety had high yield but had high broken rice percentage which reduced the quality characters. Three times of potassium application as basle, maximum tillering and booting stages. Apply three levels of potassium fertilizer (0, 58, 116 kg K /ha) have been applied using a split plot design. The results indicated that non-significant was among the times of potassium application on number of panicles/plant, but different graded levels of K significantly influenced the same character for Giza 179. The applying of K at maximum tillering resulted the longest panicle, the heaviest panicle, the maximum number of filled grains/panicle, the minimum sterility %, the highest grain yield (Kg/m²) and the highest harvest index % as compared to at booting stage and basle. Applying of 116 Kg/ ha of potassium showed superiority of Giza 179 for 1000- grain weight, number of filled grains/panicle, the minimum sterility %, grain yield (Kg/m²) and harvest index % with insignificant differences between58 and 116Kg K /ha on almost characters under study. Potassium increasing significantly effect on grains quality. Applying at maximum tillering showed superiority of Giza 179 for milling % and head rice %.Based on quadratic regression model indicating the maximum does of K varied according to the K of time of applications. The highest rate observation of K with maximum tillering stage for all studied characters. | ||||
| Keywords | ||||
| rice; potassium; yield; head rice%and quadratic model | ||||
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