The Influence Of Priming Two Cucumber Cultivar Seeds

J. Duhok Univ. Vol.13, No.1, (Agri. And Vet. Sciences) Pp 131-138, 2010
2- Yeild characteristics:
Data presented in table (2) it is clearly shown
that Humic acid caused significant increase in all
yield characteristics as compared with untreated plants.
The interaction treatment between Humic acid and
Seaweed extracts was significant in its effect. Since
cucumber plants received 2 g.L -1 of Humic acid and
sprayed with 3 ml.L -1 of Seaweed were characterized by
the highest value in fruit number/plant (97.45), Early
yield (1.728 kg/plant) and total yield (70.96
Ton/Donum) as compared with the lowest values of
these traits for control which gave (65.41, 1.295kg/plant
and 43.03 Ton/D.) respectively.
Reactions by Humic substances that result in
increased growth. This can explain the increment of yield
in response to Humic acid application. Furthermore, the
addition of Humates to a hydroponic solution stimulated
both root and shoot development, resulting in an increase of
87% in corn yield (Lee and Bartlette 1976). Salman et al
(2004) stated that Humic acid application increased
total yield of all hybrids of watermelon. The yield
increase of cucumber plant may be due to the increase of
the distillate flowers number which lead to increase the
number of fruits that reflected on yield /plant and
total yield.
3- Fruit quality characteristics
Data in tables (3 and 4) shows that Humic
acid and Seaweed extract had positive effect on
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all quality traits as compared with control. Also the
interaction between Humic acid and Seaweed
extracts was significant in its effect. Since cucumber
plants received 2 g.L -1 of Humic acid and sprayed
with 3 ml.L -1 of Seaweed extract were characterized
by the highest value in fruit weighty (110.84 g),
fruit length (17.80 cm), yield/plant( 9.49 kg) and
fruit dry weight (3.53 g). as compared with the
lowest values of these traits for control which gave
(89.81 g, 15.17 cm, 5.93 kg and 2.70 g)
respectively. The increases in fruit quality traits may
be due to that the Humic fertilizers activated the
biochemical processes in plants (respiration,
photosynthesis and chlorophyll content) which
lead to improve the quality (Abolina and
Tashkhadzhaev 1968). Plants which were sprayed
with Seaweed extracts may be due to its role in
increasing the leaves numbers, leaf area and dry
weight so the physiological activities as
photosynthesis and providing plant by nutrition and
these could be the reasons of increasing fruit weight
(Al-Saaberi, 2005). The effect of seaweed extracts
lead to increase the percentage of the total
soluble substances because of its effect on
increasing leaf area and efficiency of the
photosynthesis process (Jensen, 2004).