Yield and Yield Components of Some Sugar Cane Varieties (Saccharum officinarum L.) as affected by Different Nitrogen Fertilization Levels

Abstract

Two field trials were conducted during two successive growing seasons of 2016/2017 and 2017/2018 at Mallawy Agricultural Research Station, Agricultural Research Center, El-Minia Governorate (Middle Egypt) to study the effect of different levels of Nfertilization (160,190 and 220 kg /fed) on yield, yield components and quality of five sugar cane varieties (G.T.54-9(C9), G.2003-47, G.99-103, G.2004-27 and G.2010-7). A split plot design with three replications was used, main plots were represented by five sugar cane varieties (V1= G.T.54-9(C9), V2= G.2003-47, V3= G.99-103, V4= G.2004-27, V5= G.2010-7). The subplots were used for the three nitrogen levels (160, 190 and220 kg N / fed). The results indicated that: 1-Sugar cane varieties and N-fertilization levels exhibit significant effect on all studied traits in both seasons. Promising variety G.99-103 recorded the highest values of stalk hieght, stalk diameter (cm), millable cane ton/fed and sugar yield (ton/fed) in both seasons, while G.T.54-9(C9) variety recorded the highest values of sucrose %, purity% and sugar recovery%, whoever G.2004-27 variety outyielded the highest value of TSS%2-Increasing applied N levels from 160 up to 220 Kg N/fed significantly increased stalk height, stalk diameter(cm), millable cane ton / fed, sugar yield (ton/fed) and TSS (%), while190 Kg N/fed had the highest values of purity% and Sugar recovery%.3-The effect of interaction between sugar cane varieties and nitrogen levels on the studied traits was significant for stalk height in both seasons and purity%, sucrose % and T.S.S. % in plant crop season only. Generally, it could be concluded that under Middle Egypt conditions, it is recommended to inoculate G.99-103 sugar cane varieties with 220 Kg N/fed to maximize the productivity and quality of sugar cane yield.

Yield and Quality of Some Sugar Cane Varieties as Affected by Har-vesting Age and Phosphorus Fertilization Levels

“…The variation between the examined varieties in brix percentage may be due to the differences in growth and response to the surrounding environmental conditions prevailing during the formation of soluble solids in the cane plants. These results confirmed with those obtained by El-Shafai and Ismail (2006), Mehareb et al (2018) and Abd El-Azez et al (2018). Found that brix % was significantly affected by the examined sugar cane varieties.…”

“…Ahmed (2003). This result is in agreement with those obtained by Mohamed et al (2012), Kumara and Bandara (2002), Sohu et al (2008) and Abd El-Azez et al (2018). Who found that sucrose percentage was differed significantly by the tested sugar cane varieties.…”

“…The variation of cane yield between the studied varieties may be due to varietal characteristic. These finding are in a good line with those obtained by Kumara andBandara (2002), El-Shafai andIsmail (2006), Ahmed et al (2008), andAbd El-Azez et al (2018). They found that a significant variance among the tested sugar cane varieties in cane yield.…”

“…Sugar cane varieties differ in their ability to mature at different ages. Many investigators pointed out the important role of varieties in respect to their variation in yield, its components and quality (Kumara and Bandara (2002), Sohu et al (2008), El-Shafai and Ismail (2006), Mohamed et al (2012), Abazied (2018), Abd El-Azez et al ( 2018 and Abo El-hamd et al (2019).…”