Water scarcity is the most important factors constraining agricultural production all over the world. Water shortage of agricultural must be established to use the deficit irrigation. In other hand, deficit irrigation as a limiting factor affecting growth, physiological characteristics of plants. In order to study the effects of deficit irrigation on chlorophyll content, leaf area index and root parameters, an experiment was conducted in research farm of sari agricultural and Natural Resource University in 2012. The experiment Treatments were arranged as randomized complete block design with tree replications. The irrigation regimes consisted of full irrigation (FI-100), regulated deficit (DI-75, DI-55) and partial root zone drying irrigation (PRD-75, PRD-55). The results showed that medium and severe drought stress was caused to increase and decrease in chlorophyll index (SPAD) respectively .The maximum leaf area index (6.4) was attained in full irrigation treatment at the end of the irrigation season. That not difference with PRD75% treatment. Maximum volume, surface area and root length were allocated to Deficit irrigation and partial root Deficit irrigation in 75% water requirement treatment. This is due to the increasing in the secondary roots in these treatments relative full irrigation treatment. therefore PRD75% treatments In addition saving in water consumption provides Better use of soil moisture and sunlight And PRD75 treatment can be considered as suitable way for cope with the water crisis and achieve a sustainable agriculture.
ghadami, A., raeni, M., shahnazari, A., & zare abyane, H. (2014). Variation of Chlorophyll, Leaf Area Index and Root Parameters of Sunflower Under, Regulated Deficit and Partial Root Zone Drying Irrigation. , 6(1), 69-79.
MLA
ali ghadami; mahmood raeni; ali shahnazari; hamid zare abyane. "Variation of Chlorophyll, Leaf Area Index and Root Parameters of Sunflower Under, Regulated Deficit and Partial Root Zone Drying Irrigation". , 6, 1, 2014, 69-79.
HARVARD
ghadami, A., raeni, M., shahnazari, A., zare abyane, H. (2014). 'Variation of Chlorophyll, Leaf Area Index and Root Parameters of Sunflower Under, Regulated Deficit and Partial Root Zone Drying Irrigation', , 6(1), pp. 69-79.
VANCOUVER
ghadami, A., raeni, M., shahnazari, A., zare abyane, H. Variation of Chlorophyll, Leaf Area Index and Root Parameters of Sunflower Under, Regulated Deficit and Partial Root Zone Drying Irrigation. , 2014; 6(1): 69-79.
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