Articles
THE CAUSE(S) OF GROWTH DECLINE OF PISTACHIO TREES IN THE SOUTH OF KHORASAN
Article number
726_84
Pages
509 – 512
Language
English
Abstract
Over the past two decades, commercial pistachio orchards (Pistacia vera L.) have expanded dramatically in the south of Khorasan province.
Growth decline of pistachio trees is a serious problem in many regions.
In order to investigate the edaphic cause(s) of pistachio decline, a 19 years orchard was selected in the Bimorgh of Gonabad.
Physico-chemical properties of soils were studied by excavating 6 profiles.
Results indicated that, there is a hardpan at the depth of 40-50 cm.
Because of the occurrence of the hardpan, the soils are shallow, root extension is inhibited, and there is insufficient supply of available nutrients.
Accumulation of salts is another problem
Growth decline of pistachio trees is a serious problem in many regions.
In order to investigate the edaphic cause(s) of pistachio decline, a 19 years orchard was selected in the Bimorgh of Gonabad.
Physico-chemical properties of soils were studied by excavating 6 profiles.
Results indicated that, there is a hardpan at the depth of 40-50 cm.
Because of the occurrence of the hardpan, the soils are shallow, root extension is inhibited, and there is insufficient supply of available nutrients.
Accumulation of salts is another problem
Authors
A.R. Mohammadzade
Keywords
pistachio, hardpan, growth decline
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