Articles
EFFECT OF CONVENTIONAL, ORGANIC AND GOOD AGRICULTURAL PRACTICES (GAP) ON NITRATE CONTENT OF BEANS (PHASEOLUS VULGARIS L.) GROWN UNDER PLASTIC HOUSE CONDITIONS IN THE JORDAN VALLEY
Article number
741_4
Pages
35 – 40
Language
English
Abstract
Snap beans of Terrli variety were examined in the Jordan valley, at the University of Jordan research station during 2004/2005 growing season.
Objectives were to study nitrate accumulations in pods, seeds, leaves, and shoots, under conventional, GAP, and organic farming systems.
Two planting populations and three rates of fertilizers were applied in the main, and sub main plots, respectively.
Conventional system included additions of synthetic fertilizers and the use of chemical pesticides.
Organic system included additions of compost as the only source of nutrients with out any use of pesticides.
The GAP system utilized practices from each of the other two systems.
The conventional farming system demonstrated significantly higher NO3-N content of pods, seeds, leaves, and shoots, over those of both organic and GAP systems.
The least NO3-N accumulation was found in plant parts of organic beans.
Nitrate contents were generally, higher under higher plant populations of the three farming systems.
Nitrate accumulation found to be increased in different plant parts as conventional fertilizer rates increased.
In contrast, nitrate accumulations were constant or decreased as compost rates increased in both organic and GAP systems.
Successful and widespread adoption of organic and GAP systems would provide with sustainable agricultural basis, without the legacy of harmful environmental degradation, that has been a feature of conventional farming systems.
Objectives were to study nitrate accumulations in pods, seeds, leaves, and shoots, under conventional, GAP, and organic farming systems.
Two planting populations and three rates of fertilizers were applied in the main, and sub main plots, respectively.
Conventional system included additions of synthetic fertilizers and the use of chemical pesticides.
Organic system included additions of compost as the only source of nutrients with out any use of pesticides.
The GAP system utilized practices from each of the other two systems.
The conventional farming system demonstrated significantly higher NO3-N content of pods, seeds, leaves, and shoots, over those of both organic and GAP systems.
The least NO3-N accumulation was found in plant parts of organic beans.
Nitrate contents were generally, higher under higher plant populations of the three farming systems.
Nitrate accumulation found to be increased in different plant parts as conventional fertilizer rates increased.
In contrast, nitrate accumulations were constant or decreased as compost rates increased in both organic and GAP systems.
Successful and widespread adoption of organic and GAP systems would provide with sustainable agricultural basis, without the legacy of harmful environmental degradation, that has been a feature of conventional farming systems.
Publication
Authors
S. Abubaker, M. Kasrawi, A. Aburayan
Keywords
Organic farming, euro GAP, conventional farming, beans, nitrate
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