Yield Verification Trial
The Yield Verification Trial (YVT) is intended to implement, demonstrate and test research-based recommendations in a commercial setting. Its objectives are:
- to generate commercial yield data on the newly released and promising varieties;
- to come up with recommendations on a particular variety for the specific area and the selected mill district; and
- to put up a farm based commercial demonstration and initial propagation of varieties in particular district.
YVT is research-managed but using a “participatory variety selection” approach. Scientists, researchers, field technicians, MDDC coordinators and planters have a role in all major stages of the selection process.
There are three (3) most promising entries that are presently included in the first batch of the YVT. These are:
- PSR 01-136
- PSR 02-247 and
- PSR 01-105
Their characteristics are as follows:
PSR 01-136 is a progeny of VMC 84-947 and VMC 84-928. Like its female parent (VMC 84-947), PSR 01-136 is purple in color, has high tillering, is self destrashing, has erect and reclining stand and is non-tasseling. It exhibited moderately high to high tonnage ranging from 80-110 TC/Ha and moderately high to high sweetness ranging from 1.9-2.2 LKg/TC. It is noted Intermediate to Smut and Yellow Spot and Moderately Resistant to other diseases.
Based on the initial findings for the AYT, PSR 01-136 could adapt under varied soil types. It showed higher sugar yield over any of the checks varieties in Victorias, Davao, Tarlac & Bogo while it was similar with the checks in San Carlos, La Carlota, Capiz, Batangas and Bukidnon.
PSR 02-247 is the first progeny of LCP 85-384 that reached the AYT and presently the YVT. LCP 85-384 is the sweet cane in Louisiana that at one time had reached 91% of their sugarcane areas but it succumbed to brown rust in 2004. PSR 02-247 has average germination with low to medium tillering capacity. However, it is semi fast to fast growing, highly self-detrashing, erect to reclining in stand and is non tasseling. Its yield potential is average to moderately high tonnage ranging from 80-100 TC/Ha but it is sweet with 2.0 to 2.3 LKg/TC. It is rated Intermediate to Smut and Moderately Resistant to Resistant to other major diseases. PSR 02-247 is presently closely monitored because it promises the genetic diversity that PHILSURIN is focusing on recently. Likewise, it is being eyed as an alternative variety in location where VMC 86-550 is popularly grown given the same growing condition and cultural practices.
PSR 02-247 is not adapted to clayey soils as in Bogo and some portion of San Carlos. However, it showed high yields in areas planted with VMC 86-550 such as Victorias, Bukidnon, HPCo, & Davao. It was similar in yield with the checks in Batangas, La Carlota, Tarlac and Capiz.
PSR 01-105 is a progeny of VMC 82-1180 and VMC 84-928. This variety was initially observed to thrive under a high water table area in HPCo mill district. It is an average germinator, with average to moderately high tillering, semi fast growing and non-flowering. However, it has the tendency to lodge and is not self detrashing. Its tonnage is moderately high to high ranging from 90-110 TC/Ha. Its LKg/TC is moderate to moderately high with a range of 1.9 to 2.2 LKg/TC.
Other promising entries of the PSR 2004 series that are considered for initial propagation for inclusion for YVT are the PSR 04-86 and PSR 04-172.