Fig. 33: Dry matter yield of stripped leaves at different treatments

4.3.5 Dry matter yield of stripped leaves

During the growth period, leaves were regularly taken off the plant and the cumulative DM yield of these leaves was determined. Diamantino had a higher dry matter yield of stripped leaves than the variety Encore and grafted plants had a higher value than ungrafted ones. A higher top density and light intensity increased also the DM yield of stripped leaves (Fig. 33).

0 100 200 300 400 500 600 700 800 240 HPS, Diamantino 240 HPS, ungrafted Encore 240 HPS, grafted Encore 300 HPS, grafted EncoreDM yield of stripped leaves (g/m2 )

Fig. 33: Dry matter yield of stripped leaves at different treatments.

Error bars indicate standard deviations and are contained within the symbol if not indicated.

4.3.6 Cumulative dry matter yield

The cumulative DM yield included all harvested red fruits, the immature fruits at the end of the growth period, the stripped leaves during the growth period and the shoots. The cumulative DM yield was highest in the chamber with the highest light intensity and top density. Cumulative DM yield increased with grafting of tomatoes. No variety differences in cumulative DM yield were observed (Fig. 34). The ratio fruits to “shoots + leaves” was more than 70 %, with no differences between treatments.