Yield, Yield Components and Grain Quality of Giza 179 Egyptian Rice Cultivar as Affected by Seeding Rates and Nitrogen Levels using Broadcasting Planting Method
Medhat A.E. El-Dalil , Eman K.E. Abd-El Ghany, Abu El-Ezz, A.Fouad
The present study was conducted to evaluate the yield and grain quality of Giza179 rice cultivar as affected by seeding rates (20, 30, 40 and 50 Kg/fed) and nitrogen fertilization levels (0, 20, 40and 60 Kg N/fed) with broadcasting planting method. Two field experiments were carried out at the Experimental Farm of Etai El- Baroud Agricultural Research Station, Behaira Governorate, Agriculture Research Center (ARC) in 2014 and 2015 seasons. The results revealed that seeding rate of 40 kg /fed gave a significantly higher paddy yield of (3.77 -3.79 ton/fed) in both seasons. Nitrogen application at 40 Kg N/fed provided a maximum paddy yield (4.25 and 4.10 ton/fed) in both seasons. The yield and all yield components were significantly affected by seeding rates and nitrogen levels in the two seasons. Regarding quality, the amylose, protein content, elongation, hardness, gel consistency (GC), gelatinization temperature (GT), the rice kernel characteristics, hulling, milling and broken rice were affected by seeding rates and nitrogen levels with insignificant interaction. From the results, it is concluded that using broadcasting planting method for Giza179 Egyptian rice cultivar, higher paddy rice yield, yield components and good quality can be obtained at 40 Kg/fed seeding rate with 40 kg N/fed.
Key words: Seeding rates, nitrogen application levels, broadcasting method, yield, quality, amylose content, Oryza sativa, L.