INVESTIGATION OF IMPACT OF PLANT WATER REQUIREMENT CALCULATION METHOD, LENGTH OF MAXIMUM WATER REQUIREMENT PERIOD AND PROBABILITY LEVEL ON OPTIMAL ESTIMATION OF CROP WATER REQUIREMENT (CASE STUDY: HAMEDAN

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

HEYDARI M.; MAROFI S.; SABZIPARVAR A.A.; MIRMASOUDI S.SH.; GHIYAMI F.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Journal of Water and Soil Conservation Year:2009 | Volume:16 | Issue:3 Page(s): 123-140

Download Full-Text

Persian Verion

View:

2,094

Download:

Cites:

Information Journal Paper

Title

INVESTIGATION OF IMPACT OF PLANT WATER REQUIREMENT CALCULATION METHOD, LENGTH OF MAXIMUM WATER REQUIREMENT PERIOD AND PROBABILITY LEVEL ON OPTIMAL ESTIMATION OF CROP WATER REQUIREMENT (CASE STUDY: HAMEDAN

Author(s)

Keywords

REFERENCE EVAPOTRANSPIRATIONQ2

MOVING AVERAGEQ2

PROBABILITY LEVELQ3

MAXIMUM WATER REQUIREMENT PERIODQ3

WHEATQ3

Abstract

The recent research es indicate that irrigating with mean values of crop REFERENCE EVAPOTRANSPIRATION (ETo) level will only provide about 50% of plant water demand. In such cases, irrigation level may not provide optimum water for plant and plant may face with water stress or water excess. With respect to the impact of ETo estimation methods, irrigation schedule period, and optimal PROBABILITY LEVEL on plant water requirement, accurate evaluation of each case seems necessary to be studied. Using climatologies (1977-2006) of daily meteorological data, the daily ETo is estimated by means of five commonly used evapotranspiration methods (Blaney-Criddle, Penman, Penman-FAO24, Penman-Montieth and Penman-Montieth FAO-56). To evaluate the influence of each ETo models on actual plant water requirement, the daily evapotranspiration values were determined for WHEAT (ETc) during the period of study (1977-2006). The dates of starting and ending of maximum water requirement (MWR) were determined by means of MOVING AVERAGE approach. Using the extracted dates, mean daily ETo values were plotted for different periods from one day to 30-days of MWR and different PROBABILITY LEVELs. The results indicated that if we apply the mean daily ETc values in designing irrigation systems (7-day period), at 50% PROBABILITY LEVEL and Blaney-Criddle, Penman-Montieth FAO-56, Penman, Penman-FAO24 and Penman-Montieth ET0 methods, the water capacity of irrigation system will respectively be 12%, 10%, 18%, 14%, and 15% less than the corresponding values of 75% PROBABILITY LEVEL. The statistical analysis of daily (ETc) data also showed that by increasing the MWR period, the estimated mean daily evapotranspiration would decrease. In addition, for a specific period, using higher PROBABILITY LEVEL causes more crop water requirement values.

Multimedia

No record.

Cites

No record.

References

No record.

Cite

APA: Copy

HEYDARI, M., MAROFI, S., SABZIPARVAR, A.A., MIRMASOUDI, S.SH., & GHIYAMI, F.. (2009). INVESTIGATION OF IMPACT OF PLANT WATER REQUIREMENT CALCULATION METHOD, LENGTH OF MAXIMUM WATER REQUIREMENT PERIOD AND PROBABILITY LEVEL ON OPTIMAL ESTIMATION OF CROP WATER REQUIREMENT (CASE STUDY: HAMEDAN. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 16(3), 123-140. SID. https://sid.ir/paper/156179/en

Vancouver: Copy

HEYDARI M., MAROFI S., SABZIPARVAR A.A., MIRMASOUDI S.SH., GHIYAMI F.. INVESTIGATION OF IMPACT OF PLANT WATER REQUIREMENT CALCULATION METHOD, LENGTH OF MAXIMUM WATER REQUIREMENT PERIOD AND PROBABILITY LEVEL ON OPTIMAL ESTIMATION OF CROP WATER REQUIREMENT (CASE STUDY: HAMEDAN. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2009;16(3):123-140. Available from: https://sid.ir/paper/156179/en

IEEE: Copy

M. HEYDARI, S. MAROFI, A.A. SABZIPARVAR, S.SH. MIRMASOUDI, and F. GHIYAMI, “INVESTIGATION OF IMPACT OF PLANT WATER REQUIREMENT CALCULATION METHOD, LENGTH OF MAXIMUM WATER REQUIREMENT PERIOD AND PROBABILITY LEVEL ON OPTIMAL ESTIMATION OF CROP WATER REQUIREMENT (CASE STUDY: HAMEDAN,” JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 16, no. 3, pp. 123–140, 2009, [Online]. Available: https://sid.ir/paper/156179/en

Related Journal Papers