Yield, Quality and Natural Infestation with Insect and Disease of Four Sugarcane Varieties as Affected by Different Levels of Potassium Fertilization

Abstract

The present experiments were carried out in El-Mattana Research Station (latitude of 25.25°N and longitude of 32.31°E), Agricultural Research Center, Luxor Governorate, Egypt. The present work was conducted on two plant cane crops grown in 2015/2016 and 2016/2017 seasons to study the yield, quality and natural of infestation with lesser sugarcane borer, Chilo agamemnon Bles., and pokkah boeng disease (Fusarium moniliforme Sheldon) and other diseases of four sugarcane varieties (G.T.54-9, G.2003-47, Ph 8013 and C. 57-14) as affected by three levels of potassium fertilization (zero, 24 and 48 kg K 2 O/fed.). The results showed that the difference in mostly traits between sugarcane variety G.T.54-9 and G.2003-47 was insignificant, they surpassed the other two varieties in number of millable canes and cane and sugar yield/fed. Also, they recorded the highest percentages of infestation with C. agamemnon Bles., and pokkah boeng, during the two successive seasons. The sugarcane variety Ph 8013 showed significant superiority in stalk weight, sucrose% and sugar recovery%. However, the variance between the two sugarcane varieties namely Ph 8013 and G.2003-47 in sucrose% and sugar recovery% was insignificant. Increasing the applied dose of potassium fertilizer up to 48 kg K 2 O/fed. was accompanied by a significant increase in the values of number of millable canes, stalk weight/plant and sugar yields as well as decreased of percentage of infestation with C. agamemnon Bles., and pokkah boeng disease, during the two successive seasons. However, the variance between 24 and 48 K 2 O/fed. in sucrose%, sugar recovery% and cane yields/fed. was insignificant during the two successive seasons. Fertilizing sugar cane crop by 24 and 48 kg K2O/fed. increased cane yield by 6.47 % & 7.51 % during the first season and 4.51 % & 11.34 % during the second season, respectively, compared with check treatment.

Evaluation of Some Promising Sugarcane Varieties for Yield, Quality and Natural Infection with Pokkah Boeng Disease under Different Row Spacing

“…However, the difference in purity% between ʻG.2004-27ʼ promising variety and each the commercial variety ʻG.T.54-9ʼ and ʻG.84-47ʼ promising variety were insignificant, in the plant and 1st ratoon cane. These results are in line with those obtained by El-Geddawy, et al and Fahmy,et al [4,10].…”

“…However, the difference in this trait between G.84-47 and ʻG.2003-47ʼ was insignificant, in the plant cane. Varietal differences in cane yield were observed by El-Sogheir and Abd el Fattah and Fahmy, et al [3,10].…”

“…They added that ʻF.153ʼ variety produced the highest number of millable cans and cane yield, while ʻG.T.54-9ʼ had the highest sugar recovery%. Fahmy, et al showed that the differences in most of the studied traits between ʻG.T.54-9ʼ and ʻG.2003-47ʼ varieties were insignificant [10]. Also, Ph.8013 variety showed the significant superiority in stalk weight, sucrose% and sugar recovery% over the other tested ones.…”

Evaluation of Some Promising Sugarcane Varieties for Infestation with Two Sugarcane Borers, Yield and Quality under Different Row Spacing in Luxor Governorate, Egypt

“…However, the difference in this trait between G.84-47 and G.2003-47 was insignificant, in the plant cane. Varietal differences in cane yield were observed by El-Sogheir & Abd El-Fattah (2009) and Fahmy, et al (2017). Cane yield was significantly influenced by the interaction between inter-row spacing and tested cane varieties in the plant cane and 1 st ratoon.…”

“…However, the variance between the two promising genotypes namely G.2003-47 and G.2003-49 in the studied traits was mostly insignificant. Fahmy et al (2017) showed that the sugarcane varieties differed significantly in their susceptibility to C. agamemnon infestation. The highest bored stalks% was observed in G.2003-47 and G.T.54-9 varieties during the first and second season respectively.…”