THE UPTAKE OF FERTILIZER AND SOIL NITROGEN BY PEPPER PLANTS

The effect is studied of the rate and form of N fertilizer application on the uptake of soil and fertilizer N by pepper plants.
For this purpose a greenhouse pot experiment is used which was carried out in 1981 with two widely distributed pepper varieties: Kurtovo long fleshy pepper and Buketen.
The study was conducted with two forms of N fertilizer – ammonium nitrate and urea ¹⁵N tagged.
Three rates of each form of N fertilizer application were tested: 0, 250 and 500 mg/1 kg soil used on a 250 mg/1 kg soil P and K background.

Data are reported on the yields of fruits and leaves and stems, of total N content and ¹⁵N concentration.
The amounts are established of fertilizer and soil N taken up by the plants and of soil N additionally mobilized under the influence of N fertilization.
The coefficient is determined of the utilization of fertilizer N by using the tracer method and the method of differences.
The distribution of the taken up soil and fertilizer N in the fruits and the stems and the leaves is also studied.

Symposium on the Use of Fertilizers in Protected Vegetable Production

L. Raikova, V. Rankov

https://doi.org/10.17660/ActaHortic.1984.145.12