Parallel training supports with long pruning on the grape [Vitis] 'Rosario Bianco' cultivation
2009
Uebayashi, Y., Aichi-ken. Agricultural Research Center, Nagakute (Japan) | Manago, NO honOhono | Ohno, I. | Narita, A.
We attempted to introduce parallel training supports with long pruning to grape 'Rosario Bianco' in order to save labor for cultivation. We reconfigured nine years 'Rosario Bianco' tree. On six straight lines that were set up in parallel at intervals of 2m, long pruning vines was set in order. 1. As compared with the natural form training method, in the parallel training method, germination rate, number of spicas and growth of shoots was equivalent. 2. In the parallel training method, the fruit yield was equivalent to natural form training method. But, brix value of fruits is higher and less acidity than that of natural form training method. It seemed that maturity of fruits became early. 3. In the parallel training method, the working hours of pruning and training increased 20% from natural form training method. But the working hours treating spicas, fruits and shoots were shortened. And the working hours of all main cultivation operation were shortened 18%. 4. The difference of the ripening rate of shoots and influence to the germination rate at the following spring were investigated. But the advantage in the germination of parallel training method was not clear. However, the tendency for the number of spicas to increase was observed in parallel training method. 5. When introducing parallel training method, it was appropriate to leave the 20-25 buds per one square meter at the time of pruning. For the purpose, it is necessary to overlap the 2 or 3 long pruning vines. Thereby, 8 current shoots per square meter and 4 fruit clusters per square meter can be obtained.
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