RESEARCH ON THE INFLUENCE OF IRRIGATION ON THE BIOCHEMICAL COMPOSITION OF FRUITS SWEET PEPPER IN THE CONDITIONS OF SANDY SOILS IN SOUTHERN OLTENIA

Authors

  • M. CROITORU
  • I. PINTILIE

Abstract

The role of water in plant life is particularly important if it is taken into account that all biological processes can only take place in the presence of water. Using water, translocation of nutrient ions from the soil into the plant and the assimilated substances from the leaf to the fruit and the other organs of the plant takes place. Sweet pepper is a great water consumer, has higher requirements than tomatoes. This high water consumption can also be justified by the temperature requirements during vegetation, therefore it also has a greater sweat. In order to determine the biochemical composition of the sweet pepper fruits, autochthonous varieties was studied in the conditions of thermal stress and water stress from CCDCPN Dăbuleni. The irrigation regime influences the total production of the sweet peppervarieties studied, as well as their biochemical composition. The best results on the biochemical composition were obtained in the Amaradia variety (11.23% total dry matter, 7.8% soluble dry matter, 6.50% carbohydrates and 115.28 mg C vitamin) in the irrigated version with the minimum ceiling .

Analyzing the influence of the irrigation ceiling on the biochemical composition of the fruit, it was found that the best results were obtained at irrigation at the minimum ceiling. The greatest difference can be seen in the C vitamin content, which drops a lot in the irrigation option at the technological ceiling (from 103.85mg to 30.87mg). The production results have highlighted the role of irrigation in obtaining productions sweet pepper economically efficient. In normal irrigation, all cultivars recorded large yields over 40.0 t / ha, the Andrada variety recording 55.09 t / ha, with a difference from the statistically insured witness Between the amount of total dry substance in sweet pepper and production, correlations have been established depending on the irrigation variant. In the irrigated version at the minimum level, the dry matter content of the fruit increases with the increase of the production, and in the irrigated variant at the technological ceiling, the total dry substance content decreases with the increase of the production.

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Published

2018-08-05