The effect of foliar application of 3 coesnercial fohifertihi—
zers (Bayfolan, Irra]. or Fetrilon—combi) and 5 different micro
tutrients (Fe, Zn. Mn, Cu or B) at different concentrations on yield
a fruit quality of torato were studied during 1982 and 1983 sum
ier seasons. Number of fruits per plant, early marketable and total
fruit yield were significantly increased by spraying tomato plants
3 times with 400 ppm Fe, 100 ppm 8, 0.1% Bayfolan, 0.2% Irral or
0.6% Letrilon-Corabi in both seasons and 200 ppm Zn or 25 ppm Mn in
cte season only. These increments reached about 11—49% for early
peld, 24—76% for marketable yield, 29—72% for total yield over
than the control. The physical characteristics of tomato fruits
(i.e. length, diameter and fruit shape index) were improved slightly
bymicronutrients application. Moreover, T.S.S., vitamin C, tit
ratable acidity as well as reducing, non-reducing and total sugars
contents were increased as a result of micro-nutrients foliar appli
cation. The highest vitamin-C content of tomato fruit was found
dien plants sprayed with 0.1% Bayfolan, however fruit acidity was
considerably increased by B, Zn, Fe and Irral application at 100,
00, 400 ppm and 0.2% respectively. Furthermore, all, treatments
acreased reduced and/or non reduced sugars content of tomato fruit
‘ared with control in both seasons. |
