Leaf Temperature as an Index to Determine the Irrigation Interval

سال انتشار: 1393
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 497

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شناسه ملی سند علمی:

JR_ROCE-9-2_003

تاریخ نمایه سازی: 17 فروردین 1395

چکیده مقاله:

Evapotranspiration and plant water absorption reduce when exposed to water stress and this reduction results in an increase in leaf temperature. To determine the effect of water stress on leaf temperature and timing of irrigation using leaf temperature, a research was conducted on the Research and EducationGreenhouse Production Center of Islamic Azad University, Isfahan Branch (Khorasgan). This study was conducted in controlled conditions and soilless culture of cucumber, tomato, pepper and strawberry. The index of difference between the temperature of air and leaf ( T= TAir –TLeaf ) showed leaf temperature which then could indicate the amount of water absorbed by the root; therefore, transpiration rates weremeasured. With an acceptable coefficient of determination model, we concluded that this index (difference between the temperature of air and leaf) was dependent on the intake of water from the roots and leaf transpiration rate, so it can be used as an indicator to determine the time of irrigation

نویسندگان

ABDOLREZA EGHTEDARI NAEENI

Faculty of Agriculture Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University,Isfahan, Iran

ELHAM MOHRI ESFAHANI

Faculty of Agriculture Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University,Isfahan, Iran

MOHSEN BEIGI HARCHEGANI

Tiran Branch, Islamic Azad University, Isfahan, Iran

MEHRDAD JAFARPOUR

Faculty of Agriculture Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University,Isfahan, Iran