Agriculture Reference
In-Depth Information
Application of Active EM-Calcium in Green Agricultural Production — Case Study in Tomato and…
http://dx.doi.org/10.5772/58329
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P1 P2 P3 P4 P5 P6
Figure 8.
Entropy weight coefficient of different treatments
3.3. Conclusions
Treatment P4 (spraying 1‰ EM-Ca amount 2 ml with 30 g MP3005 per plant once in 3 days
during tobacco root extending stage) obtained the highest flue-cured tobacco yield of 2473.5
kg/hm
2
, followed by P6, and yield of P2 was lowest, recording as only 2097.0 kg/hm
2
. The
irrigation water use efficiency of P4 was highest, reaching 0.618 kg/m
3
. Exogenous Ca supply
significantly increased the Ca content in tobacco leaves. The evaluation results of entropy
weight coefficient evaluation model showed that P4 was the best management scheme, that
was to say, 30 g/plant MP3005 water-retaining agent combined with EM-calcium spray (1‰
Ca
2+
) during the root-extending stage of flue-cured tobaccos was the optimal management
scheme, and the interval of spraying time was 3 days with 2ml each time on the back side of
tobacco leaves.
4. General conclusions
The research results showed that
Active
EM-Calcium could promote crop growth, improve
the yield and disease resistance of crops. Main conclusions could be drawn as below:
1. The application of
Active
EM-Calcium increased the Ca accumulation in upper leaf, lower
leaf, root and stem to maximum rates of 28.09%, 23.50%, 29.15%, 33.34% compared to no-
calcium treatment. The BER incidence of
Active
EM-Calcium treatments was lower than that
of CK. The BER incidence had significantly negative correlation with total tomato yield
(r=-0.736) and marketable tomato yield (with no BER) (r=-0.862).
