Vitis

Alicante Grenache and Semillon wine grape varieties, were studied on their own roots and on seven rootstocks, for yield and quality criteria, in an arid climate. Grenache on its own roots was outstanding in yield, vigour, T.S.S. and acid content. Of the grafted rootstock combinations, 140 Ru yielded highest, followed by 110 R, 41 B MG, 1103 P. Acid content was lowest with 41 B MG. Bunch weight was lowest on ungrafted vines and highest on 140 Ru and 1103 P.
Semillon had the highest yield and acid content on 41 B MG, followed by ownroot vines, 161-49 C (low vigour) and 1103 P. Highest bunch weights were observed with 140 Ru and 41 B MG, while high T.S.S. were observed with 161-49 C, own root-vines and 99 R.
On 1103 P and 140 Ru, both varieties showed less decline in vigour with age, relative to other combinations.

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Quality and yield of Alicante Grenache and Semillon on various rootstocks in an arid climate
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Quality and yield of Alicante Grenache and Semillon on various rootstocks in an arid climate

Alicante Grenache and Semillon wine grape varieties, were studied on their own roots and on seven rootstocks, for yield and quality criteria, in an arid climate. Grenache on its own roots was outstanding in yield, vigour, T.S.S. and acid content. Of the grafted rootstock combinations, 140 Ru yielded highest, followed by 110 R, 41 B MG, 1103 P. Acid content was lowest with 41 B MG. Bunch weight was lowest on ungrafted vines and highest on 140 Ru and 1103 P.
Semillon had the highest yield and acid content on 41 B MG, followed by ownroot vines, 161-49 C (low vigour) and 1103 P. Highest bunch weights were observed with 140 Ru and 41 B MG, while high T.S.S. were observed with 161-49 C, own root-vines and 99 R.
On 1103 P and 140 Ru, both varieties showed less decline in vigour with age, relative to other combinations.

Scientific Publication