NITROGEN APPLICATION AFFECTS YIELD AND POSTHARVEST QUALITY OF OKRA (HIBISCUS ESCULENTUS L. CV. ‘BOYIATIOU’)

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REKOUMI K.; KARAPANOS I.C.; AKOUMIANAKIS K.A.; PASSAM H.C.

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Paper Information

Journal: INTERNATIONAL JOURNAL OF PLANT PRODUCTION Year:2012 | Volume:6 | Issue:1 Page(s): 59-72

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Information Journal Paper

Title

NITROGEN APPLICATION AFFECTS YIELD AND POSTHARVEST QUALITY OF OKRA (HIBISCUS ESCULENTUS L. CV. ‘BOYIATIOU’)

Author(s)

REKOUMI K. | KARAPANOS I.C. | AKOUMIANAKIS K.A. | PASSAM H.C. | Issue Writer Certificate

Keywords

ABELMOSCUS ESCULENTUS

COLOUR

FIRMNESS

WEIGHT LOSS

POSTHARVEST LIFE

NITRATE CONTENT

Abstract

In Greece and Turkey, okra (Hibiscus esculentus L.) is cultivated for small pods (£4-5 cm), which are highly perishable after harvest. In this experiment, okra was cultivated at 4 levels of N (30, 150, 300 and 450 mg -1) within the irrigation water.Pod yield was highest at 300 mg l-1 N. High N increased the NITRATE CONTENT and decreased dry matter without affecting pod COLOUR (P<0.05). When pods were enclosed in polyethylene and stored for up to 10 days at 7 or 10oC fresh weight decreased by 7% and 11-12% respectively, and by 20% and 28% respectively during 3 days subsequent shelf-life at 22oC. WEIGHT LOSS after 10 days at 7oC and during shelf-life was higher in pods from 300-450 mg l-1 N and was accompanied by a corresponding decrease in % dry matter. The loss of chlorophyll during storage (i.e.increase in a*) rose with storage time and N application level, accompanied by a decrease in b*. The nitrate concentration within the pods decreased with storage irrespective of N level. It is concluded that the rate of N application affects not only the production but also the quality of okra during storage. For the production of small-sized pods N application should not exceed 300 mg -1. Although pods from high N levels (300-450 mg -1 N) lose more weight, dry matter and chlorophyll than those from the lowest N level (30 mg -1 N), they may nevertheless be stored satisfactorily for up to 10 days at 7oC, which permits a 3 day ambient shelf-life.

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APA: Copy

REKOUMI, K., KARAPANOS, I.C., AKOUMIANAKIS, K.A., & PASSAM, H.C.. (2012). NITROGEN APPLICATION AFFECTS YIELD AND POSTHARVEST QUALITY OF OKRA (HIBISCUS ESCULENTUS L. CV. ‘BOYIATIOU’). INTERNATIONAL JOURNAL OF PLANT PRODUCTION, 6(1), 59-72. SID. https://sid.ir/paper/314640/en

Vancouver: Copy

REKOUMI K., KARAPANOS I.C., AKOUMIANAKIS K.A., PASSAM H.C.. NITROGEN APPLICATION AFFECTS YIELD AND POSTHARVEST QUALITY OF OKRA (HIBISCUS ESCULENTUS L. CV. ‘BOYIATIOU’). INTERNATIONAL JOURNAL OF PLANT PRODUCTION[Internet]. 2012;6(1):59-72. Available from: https://sid.ir/paper/314640/en

IEEE: Copy

K. REKOUMI, I.C. KARAPANOS, K.A. AKOUMIANAKIS, and H.C. PASSAM, “NITROGEN APPLICATION AFFECTS YIELD AND POSTHARVEST QUALITY OF OKRA (HIBISCUS ESCULENTUS L. CV. ‘BOYIATIOU’),” INTERNATIONAL JOURNAL OF PLANT PRODUCTION, vol. 6, no. 1, pp. 59–72, 2012, [Online]. Available: https://sid.ir/paper/314640/en

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