EFFECT OF FOLIAR APPLICATION OF MICRONUTRIENTS, MAGNESIUM AND WRAPPING FILMS ON YIELD, QUALITY AND STORABILITY OF GREEN BEAN PODS

Shehata, S.A.; Z. A., Said,; M. Attia, Manal; Rageh, M.A.

doi:10.21608/fjard.2015.192992

EFFECT OF FOLIAR APPLICATION OF MICRONUTRIENTS, MAGNESIUM AND WRAPPING FILMS ON YIELD, QUALITY AND STORABILITY OF GREEN BEAN PODS

Document Type : Research articles.

Authors

¹ Faculty of Agriculture, Cairo University, Giza, Egypt

² Postharvest and Handling of Vegetable Crops Department. Horticulture Research Institute. Agriculture Research Center, Giza, Egypt.

10.21608/fjard.2015.192992

Abstract

This study was carried out under plastic house conditions during
autumn seasons of 2012/2013 and 2013/2014 at the Agricultural
Experiment and Researches Station, Faculty of Agriculture, Cairo
University on Morelado cv. to study the effect of foliar spraying by Iron at
100 ppm+ Manganese at 100 ppm + Zinc at 50 ppm or Magnesium at 0.5%
concentrations on productivity ,quality and storability of snap bean during
storage at 6 °C and 95 % RH. Results showed that green bean plants
sprayed with Iron at 100 ppm+ Manganese at 100 ppm + Zinc at 50 ppm
were, significantly, the highest in all vegetative growth parameters
compared with other treatments. Foliar application with Iron at 100 ppm+
Manganese at 100 ppm + Zinc at 50 ppm or magnesium at 0.5% increase
leaves chlorophyll content without significant differences between them.
Foliar application with Iron at 100 ppm+ Manganese at 100 ppm + Zinc at
50 ppm or magnesium at 0.5% , significantly increased the total yield and
its components with significant differences between them and also
improved the pods quality. Results showed that with prolonging the storage
period at 6 °C and 90 – 95% RH ,weight loss% of pods increased, but
general appearance, total chlorophyll and ascorbic acid content were
reduced. Green bean pods from plants sprayed with Iron at 100 ppm+
Manganese at 100 ppm + Zinc at 50 ppm gave less weight loss % and high
values of chlorophyll and ascorbic acid contents , also maintained good
appearance for 16 days storage at 6 ºC + 95 % RH .
Concerning the effect of packaging material, snap bean pods packed in
polypropylene or stretch reduced the weight loss percentage as compared
with unpacked pods during storage in the two seasons, however,
polypropylene film was the most effective treatment in reducing the loss in
pods weight compared with those packed in stretch film. Snap bean stored
in polypropylene film was perceived to have the highest intensities of
freshness, greenness and crispness, while unpacked control was perceived
to have low intensities of these attributes. The highest total chlorophyll
content was obtained from pods packaged in polypropylene film followed
by those packed in stretch film with significant differences between them.
However, the lowest ones was obtained from unpacked pods during storage. Snap bean pods packed in polypropylene or stretch film were
significantly higher in ascorbic acid with no significant differences
between them than unpacked pods during storage.

Main Subjects