The Effect of Furrow Irrigation Management onTerend of Corn Root Growth
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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:

Irrigation management is one of the important factors influencing the development and distribution of plant roots, which is considered by many researchers. The purpose of this study was to study the growth and distribution of corn root in various irrigation management systems. This research was carried out as a split plot in a randomized complete block design at Kabootarabad Research Station in Isfahan. The main factor was consisted of three levels of irrigation regime I1 (100%), I2 (80%), I3 (60%) and the sub-factor was included three irrigation methods, conventional, alternative and fixed furrow irrigation. The measured parameters of root were length, surface, volume, fresh and dry weight, which were carried out in 5 stages of plant growth including 9-leaf, 14-leaf, inflorescence emergence, milking and physiological examination. The results showed that the effect of irrigation regimes and the type of irrigation method on root traits was statistically significant at 5% level. The highest amount of root traits was corresponded to I1 regime and conventional furrow irrigation, and the lowest one was corresponded to I3 regime and fixed furrow irrigation. The highest amount of root traits was obtained in the soil layer of 0-20 cm for all regimes and irrigation methods. From the 9-leaf to the milky stage, the root traits had a bullish trend, then after constant and at the end of growing season declined. Generally, a suitable root system for absorption of water and nutrients required by the plant can be achieved by application of a deficit irrigation rate up to 20% in conventional furrow irrigation or alternative furrow irrigation, which leads to save water consumption.

Language:
Persian
Published:
Iranian Journal of Soil and Water Research, Volume:50 Issue: 5, 2019
Pages:
1255 to 1264
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