This investigation was carried out at Samannud District Gharbia Governorate during seasons of 2009 and 2010 on Flame Seedless grapevines growing in clay soil. This objective amied to study the effect of intercropping Flame Seedless grapevines by: Clover, Peas, Onion and Japanese Turnip.
Clover was sown under and between vines during the second week of September, Peas was cultivated in rows during the first week of October, Onion Transplanting in rows during the first week of December and Japanese Turnip sown under and within vines during the second week of September, 2009 and 2010 seasons.
The results revealed that cultivation of Onion, Japanese Turnip, Peas and vines sole advanced budburst date and budburst % than other treatments. On the other hand Clover treatment delayed budburst in this respect. As for fertility indicators intercropping vines by Onion, Japanese Turnip, Peas thin vines sole occupied the highest values respectively in these parameters and the minimum values achieved from the vines were intercropped with Clover. The data also showed that the fruitful shoots which have more clusters presented from the vines which intercropped by Onion and Japanese Turnip. Concerning vegetative growth data revealed that Peas, Onion and Clover treatments increased leaf area, shoot length, pruning weight/vine (kg) and enhanced wood ripening % than other treatments.
As date of leaves fails, intercropping vines with Clover delayed leaves fails to November but other treatment occurred in October. Also intercropped vines with Peas, Clover and Onion have maximum values in N,P and K leaf petiole%.
Average yield (Ton)/Fe. of vines, intercropping with Clover decreased the yield by about 7.4 %. On the other hand yield of vines intercropping with Peas, Onion and Japanese Turnip increased the yield by about 17.3, 49.4 and 19.8%, respectively comparing with vine sole. Also results cleared that intercropping of Clover, Peas, Onion and Japanese Turnip increased the income (L.E) / Fe. by about 8.5, 51.2, 61.4 and 47.1 % compared to sole vines ( averages of two seasons under the study).
From this results, it could be recommended that cultivation of Autumn and Winter agronomic crops under and between Flame Seedless grapevines, and harvested its before the main crop (grapes) led to increasing the income from farm (L. E.) .