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Luzon Agricultural Research and Extension Center (LAREC)

  • Preliminary Yield Test of Phil 2006 Series. Macamos P., N. Guiyab, V. Serrano, A. Casupanan and M. Guevarra

Thirty test clones from Phil 2005-2006 Row Test series entered the Preliminary Yield Test at LAREC. In terms of sugar yield and disease resistance, nine est clones were significantly higher or comparable to both or either check varieties Phil 8013 and Phil 7544 and resistant to downy mildew. Some selections will undergo re-screening to smut for verification.

Recommended to undergo ecological testing are clones from Phil 06-0647, Phil 05-0315, Phil 05-1681, Phil 05-1783, Phil 05-2057, Phil 05-2191, Phil 05-2335, Phil 05-2525 and Phil 05-2585.

  •  Screening of Phil 2005 series for Resistance to Smut. Casupanan, A., V. Serrano, N. Guiyab, P. Macamos and M. Guevarra

Thirty clones of the Phil 2005 series from LGAREC and two check varieties were planted, rationed and screened for reaction to sugarcane smut.

Results indicated that two (2) were very highly resistant (Phil 05-1379 and Phil 05-2151), seven (7) were highly resistant (Phil 05-55, Phil 05-175, Phil 05-483, Phil 05-645, Phil 05-715, Phil 05-1197, and Phil 05-3635), three (3) were resistant (Phil 05-309, Phil 05-329 and Phil 05-1383), six (6) were intermediate resistant (Phil 05-121, Phil 05-245, Phil 05-361, Phil 05-597, Phil 05-603 and Phil 05-1707) three (3) were intermediate average (Phil 05-87, Phil 05-111 and Phil 05-2167) and other nine were rated intermediate susceptible to very highly susceptible.

  •  Screening of Phil 2004 Series for Resistance to Downy Mildew. Serrano, V., N. Guiyab, P. Macamos and M. Guevarra

Ten test clones and ratoon canes from Phil 2004 series were screend and evaluated for resistance to downy mildew. Six (6) were very highly resistant (Phil 04-0691, Phil 04-0827, Phil 04-1889, Phil 04-1981 and Phil 04-2249), three (3) were highly resistant (Phil 04-0881, Phil 04-1533 and Phil 04-2319) and one was resistant (Phil 04- 1719).

  • Effects of Calcitic Lime Application on Soil Properties and Sugar Yields. Burcer, A., M. Guevarra, B. Manlapaz, L. Yarte and A. Bacani.

The application of 2, 4, 6 tons/Ha., calcitic lime (CaCO3) was tested on Angeles fine sandy loam at LAREC to determine the effects on some soil properties and cane and sugar yields of Phil 87-27, Phil 90-1237 and Phil 93-1601.

Applying 2, 4, 6 tons/Ha. Of lime improved the soil pH, organic matter and Phosphorus, potassium and calcium content in the 5 cropping seasons.

Four and six tons/Ha. Calcitic lime significantly increased cane tonnage (TC/Ha.) and sugar yields (LKg/Ha) of the three test varieties.

Rates of four and six tons/Ha. Calcitic lime gave higher return on investment (ROI) than the other rates in the 5 cropping seasons.

La Granja Agricultural Research and Extension Center (LGAREC)

Research findings on Sugarcane Variety Improvement and Pest Management studies are:

  •  Phil 2004-1011 and Phil 2004-0827 are the two varieties recommended for commercial propagation and release. The two varieties passed the ecological test and are high in tonnage, medium to high in sucrose content and is very sparse in flowering, while resistant to smut, downy mildew and leaf scorch but susceptible to yellow spot.
  •  In the preliminary yield test for Phil 2006 series ten top varieties were selected as entries to the Ecological test this season. These are: Phil 06-16-315, Phil 06-50-647, Phil 06-202-1681, Phil 274-2299, Phil 06-223-1899, Phil 06-241-2119, Phil 06-256-2191, Phil 06-274-2287, Phil 06-274-2289 and Phil 06-292-2525.
  •  The Phil 2010 Series Breeding Program produced 224 arrows from 203 bi-parental crosses using 52 female 46 male selected parents from Germplasm Collection.

Research finding on Production Technology and Crop Management studies are:

  •  The four-year data on the study of “Organic Fertilization in Sugarcane”, showed that highest tonnage of Phil94-0913 was consistently observed on the application of 50% NPK recommended rate compared to the unfertilized control. Phil 93-0913 applied with recommended rate (105-105-120) NPK/ha produced the highest sugar yield of 194.2LKg/Ha in the plant cane. The four year application of 50% RR-NPK + 10tons organic materials, like mudpress, gave the highest total benefit of Php 465,932.90. The highest benefit was consistently obtained on three ratoons.
  •  In the evaluation of the “Effect of In-Field Vermicomposting Using Various Organic Materials on the Yield of Plant and Ratoon Crop of Phil 94-0913”, results showed that application of ½ of the recommended rate of fertilizer combined with organic fertilizer materials like chicken dung or mudpress composted in the field and applied with African Night Crawler gave comparable yields with the recommended rate of fertilizer.
  •  In evaluating the “Efficacy of Different Biological Nitrogen Fixers (BNF) and Inorganic Fertilizers on the Growth and Yield of Plant and Ratoon”, it was observed that using 50% of the recommended rate of fertilizer + Acetobacter 1 produced the highest cane tonnage and sugar yield. LKg/TC did not differ in all other combinations in both plant and ratoon.
  • In a study of “Different Organic Substitutes Combined with Reduced Inorganic Fertilizer on the Growth and Yield of Phil 97-3933 Ratoons”, it was found out that among the organic fertilizers, BOKASHI 3 was the best, while among the BNFs combined with 1 ton/ha Mudpress, the mixture of the three BNFs was the best. Furthermore, very minimal improvement in the physical and chemical properties of the soil was observed after each cropping, therefore yearly application of any of the materials used is recommended in order to sustain the nutrient requirements of the succeeding crops.
  • Results of the study on the “Effect of Boron Application”, under a limited NPK application in Guimbalaon Soil improved yields of Phil 98-0255.  There was slight improvement in yields when NPK was sufficient.  Boron has a very narrow range between deficiency and toxicity, therefore it is recommended that boron fertilization will be tested in different soil types to determine the efficacy of this micronutrient and to determine the rate that will give maximum net benefit.
  • The application of “Nutrisphere-N (N enhancer) and Avail (P enhancer) of Phil 99-1793”, gave higher tonnage and sugar yield than farmer’s practice of using urea and 18-46-0. Furthermore, there were also high N and P concentrations on TVD leaves of Phil 99-1793 at sixth month of growth, but was not a guarantee of high yield at harvest. Highest net benefit of Php 162,894.59 was obtained on treatment where the source of N and P was urea and Avail. 
  • The application of Biological Nitrogen Fixer Isolates with and without nitrogen combination was also conducted using Phil 97-3933. Data showed the application of biological nitrogen fixers gave significant results on plant height, stalk length and diameter but not on yield of Phil 97-3933.