MANAGEMENT OF REMINI APPLE PRODUCTION IN DRY AREAS (UNDER UNFAVORABLE CONDITIONS OF WATER SHORTAGE AND SOIL TEXTURE)

Hamid Kheyrodin*

ABSTRACT

In order to investigate the effect of water stress and soil texture on the yield and
growth indicators of potato cultivar Aiola, the flooding method with different
volumes of water has been used in Semnan University.
The effects of drought stress on changes in dry matter of plant organs, total plant dry
matter TDM, relative growth rate RGR, crop growth rate CGR, leaf area index LAI, leaf
area durability LAD and net absorption rate NAR were very high.
Dehydration stress has caused a decrease in CGR, and this is the reason why tubers
and potato performance are reduced. In general, the effects of stress on growth
indicators are different depending on the intensity of stress and cultivars, and the
research results indicate a decrease in growth indicators. It is due to the lack of
water. The maximum production of potatoes occurs when the soil moisture is at its
optimum level. The optimum level of soil moisture is 60 to 70% of the total water
available to the plant, depending on the growth stage. Our results have shown that
irrigation at the rate of 200 mm reduces the dry matter of the aerial part of the plant,
the dry matter of the root, the dry matter of the tuber and the yield of the tuber. Of
course, the application of dry stress has reduced the dry weight of potato roots and
the amount of this reduction is correlated with the intensity of the stress.

Keywords:

Management, potato cultivation, water stress, soil texture.

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