RDE Abstract of Completed Research
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Sugarcane Diseases / Resistance Test
Serrano V., R. del Rosario, L. Vidallon and M. Guevarra
Forty-two test clones from the 2001 Row Test series were entered in the Preliminary Yield Test at LAREC using RCBD to compare their agronomic and yield potential with two check varieties under natural field conditions at LAREC.
Based on sugar yield and disease resistance, ten clones were found to be significantly higher than the two check varieties Phil 8013 and Phil 75-44.
Recommended to undergo ecological testing are Phil 2001-27, Phil 2001-167, Phil 2001-441, Phil 2001-529, Phil 2001-575, Phil 2001-577, Phil 2001-637, Phil 2001-695, Phil 2001-829 and Phil 2001-833
R.G. Entima
Of the 61 clones plant cane tested against downy mildew of sugarcane, 42 were very highly resistant, 8 highly resistant, 5 resistant, 3 intermediate resistant, 1 intermediate susceptible, 1 susceptible and 1 highly susceptible to the disease. In the ratoon crop, 25 clones were very highly resistant, 13 highly resistant, 9 resistant, 2 intermediate resistant, 2 intermediate average, 4 intermediate susceptible, 1 susceptible and 5 very highly susceptible.
N.S. Meneses
Of the 5 clones plant cane tested against smut of sugarcane, 1 was very highly resistant, 1 resistant, 1 intermediate resistant, 1 intermediate average and 1 susceptible. In the ratoon crop, 1 clone was very highly resistant, 1 resistant, 1 intermediate average, 1 susceptible and 1 very highly susceptible.
N.S. Meneses
Out of 48 clones plant cane tested, 5 were very highly resistant, 7 highly resistant, 5 resistant, 13 intermediate resistant, 4 intermediate average, 1 intermediate susceptible, 7 susceptible, 3 highly susceptible and 3 very highly susceptible. In the ratoon crop, 4 clones were very highly resistant, 4 highly resistant, 5 resistant, 8 intermediate resistant, 7 intermediate average, 3 intermediate susceptible, 5 susceptible, 6 highly susceptible and 6 very highly susceptible.
N.S. Meneses
Two (2) clones of the 1999 series were rated highly susceptible and 3 very highly susceptible to the disease. For 2002 series, 17 clones were rated very highly resistant, 2 highly resistant, 5 resistant, 9 intermediate resistant, 6 intermediate average, 5 intermediate susceptible, 3 susceptible, 2 highly susceptible and 33 very highly susceptible to the disease.
N.S. Meneses
Of the 12 clones of 1997 series plant cane tested against yellow spot or sugarcane, 1 was resistant, 3 intermediate resistant, 3 intermediate average, 4 intermediate susceptible and 1 very highly susceptible. For 1998 series plant cane, 1 was highly resistant, 1 resistant, 3 intermediate resistant, 1 intermediate average, 1 intermediate susceptible, 4 susceptible and 1 highly susceptible. In the ratoon crop of 1997 series, 2 clones were intermediate resistant, 1 intermediate average, 1 intermediate susceptible, 2 susceptible, 3 highly susceptible and 3 very highly susceptible. For 1998 series ratoon, 2 were intermediate resistant, 2 intermediate average, 4 susceptible, 1 highly susceptible and 3 very highly susceptible.
N.S. Meneses
Out of 40 clones plant cane tested, 1 was resistant, 5 intermediate resistant, 8 intermediate average, 6 intermediate susceptible, 5 susceptible, 4 highly susceptible and 11 very highly susceptible. In the ratoon crop, 3 clones were intermediate resistant, 8 intermediate average, 1 intermediate susceptible, 7 susceptible, 3 highly susceptible and 18 very highly susceptible.
R.V. Estioko
The 1997 series clone was rated intermediate resistant to yellow spot of sugarcane. Two (2) clones of the 1999 series were intermediate resistant, 1 intermediate susceptible and 1 very highly susceptible. Of the 2000 series clone 1 was rated very highly resistant, 5 highly resistant, 7 resistant, 16 intermediate resistant, 12 intermediate average, 2 intermediate susceptible, 3 susceptible and 1 very highly susceptible.
R.G. Entima
Of the 12 clones of 1997 series plant cane tested against leaf scorch or sugarcane, 8 were highly resistant, 3 intermediate resistant and 1 intermediate average. For 1998 series plant cane, 10 were highly resistant, 1 intermediate and 1 intermediate average. In the ratoon crop of 1997 series, 7 clones were highly resistant, 4 intermediate resistant and 1 intermediate average. For 1998 series ratoon, 8 were highly resistant, 2 intermediate resistant and 2 intermediate average.
R.G. Entima
Of the 40 clones plant cane tested, 13 were highly resistant, 19 intermediate resistant, 7 intermediate average and 1 highly susceptible. In the ratoon crop, 5 clones were highly resistant, 20 intermediate resistant, 10 intermediate average, 2 intermediate susceptible and 3 highly susceptible.
R.G. Entima
The 1997 series clone was rated intermediate resistant to leaf scorch of sugarcane. Of the 4 clones of the 1999 series, 2 were highly resistant while the others were intermediate resistant. Thirty seven clones of the 2000 series were highly resistant to leaf scorch of sugarcane, 7 intermediate resistant and 3 intermediate average.
Cultural Practices for the Management of Sugarcane Smut, Ustilago scitaminea Sydow (2005) Vidallon, L. A. Casupanan and M. Guevarra - The effects of different cultural practices in the management of smut on percent infection and yields of Phil 8715 were evaluated.
- In the plant crop, percent smut infection was significantly higher in the control (non-selection of seedpieces + farmer’s cultural practices) than the other treatments. Smut infections were comparable in the ratoon crop. Strict selection of healthy seedpieces + farmer’s cultural practices + rouging gave the lowest TC/Ha and LKg/Ha. In the plant cane, the control gave significantly lower TC/Ha than strict selection + farmer’s cultural practices and intensive weeding. LKg/TC did not significantly differ among the treatments in both crops.
- The LKg/Ha in the plant cane of the control was significantly lower than strict selection of healthy seedpieces + intensive weeding but comparable with strict selection of healthy seedpieces + farmers cultural practices. In the ratoon cane, no significant differences occurred on LKg/Ha.
Downy Mildew Resistance Test of Phil 1999 and Phil 2000 Series (Plant Cane and Ratoon). Annual Report, SRA (LGAREC) (2004) ENTIMA, R.G. - Of the 86 clones plant cane tested against downy mildew of sugarcane, 70 were resistant, 11 intermediate and 5 susceptible to the disease. In the ratoon crop, 41 clones were very highly resistant, 15 highly resistant, 8 resistant, 7 intermediate resistant, 5 intermediate average, 4 intermediate susceptible, 2 highly susceptible and 4 very highly susceptible.
Smut Resistance Test of Phil 1999, Phil 2000 and Phil 2001 Series. Annual Report, SRA (LGAREC) (2004) MENESES, N.S. - Ten clones of the Phil 1999 series were rated very highly resistant and 2 intermediate resistant to the disease. For Phil 2000 series, 42 clones were rated very highly resistant, 2 resistant, 2 intermediate resistant, 1 intermediate average, 1 intermediate susceptible and 1 susceptible. For Phil 2001 series, 19 were very highly resistant, 3 highly resistant, 4 resistant, 15 intermediate resistant, 2 intermediate average, 4 intermediate susceptible, 5 susceptible, 2 highly susceptible and 37 very highly susceptible.
