บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effect of nitrogen fertilization and plant population during growth on lettuce (Lactuca sativa L.) postharvest quality.

Tittonell, P., Grazia, J. de and Chiesa, A.;

ISHS Acta Horticulturae 553: 67-68.

2001

บทคัดย่อ

Effect of nitrogen fertilization and plant population during growth on lettuce (Lactuca sativa L.) postharvest quality.

The effects of N fertilizer application (0, 75 and 150 kg/ha) and crop density (33 and 50 plants/m2) on the postharvest quality of lettuce cv. Grand Rapids were studied. Crops grown at high density were not significantly affected by N treatment. On the other hand, crops at low density showed higher yields when treated with 0 and 75 kg N/ha. However, the yield was not significantly affected by the application of 150 kg N/ha. N application decreased the dry matter but increased the nitrate N contents of the upper biomass of lettuce.