ROOTS DISTRIBUTION UNDER DEFICIT IRRIGATION FOR MAIZE PRODUCTION
Khedr, A., ElGamal, R., Rashad, M. (2019). ROOTS DISTRIBUTION UNDER DEFICIT IRRIGATION FOR MAIZE PRODUCTION. EKB Journal Management System, 36(4), 1089-1102. doi: 10.21608/mjae.2019.94878
A. F. Khedr; R. A. ElGamal; M. A. Rashad. "ROOTS DISTRIBUTION UNDER DEFICIT IRRIGATION FOR MAIZE PRODUCTION". EKB Journal Management System, 36, 4, 2019, 1089-1102. doi: 10.21608/mjae.2019.94878
Khedr, A., ElGamal, R., Rashad, M. (2019). 'ROOTS DISTRIBUTION UNDER DEFICIT IRRIGATION FOR MAIZE PRODUCTION', EKB Journal Management System, 36(4), pp. 1089-1102. doi: 10.21608/mjae.2019.94878
Khedr, A., ElGamal, R., Rashad, M. ROOTS DISTRIBUTION UNDER DEFICIT IRRIGATION FOR MAIZE PRODUCTION. EKB Journal Management System, 2019; 36(4): 1089-1102. doi: 10.21608/mjae.2019.94878

ROOTS DISTRIBUTION UNDER DEFICIT IRRIGATION FOR MAIZE PRODUCTION

Misr Journal of Agricultural Engineering
Article 4, Volume 36, Issue 4, October 2019, Page 1089-1102  XML PDF (1017.49 K)
Document Type: Original Article
DOI: 10.21608/mjae.2019.94878
View on SCiNiTO View on SCiNiTO
Authors
A. F. Khedr1; R. A. ElGamal1; M. A. Rashad2
1Assist. Prof. of Agric. Eng., Agric. Eng. Dept., Fac. of Agric., Suez Canal Univ., Egypt.
2Assoc. Prof. of Agric. Eng., Agric. Eng. Dept., Fac. of Agric., Suez Canal Univ., Egypt.
Abstract
Root growth and its distribution is fundamental in explaining crop responses to irrigation systems and determining its appropriate management. An experiment was conducted to study the effect of drip emitters (Em) under full and deficit irrigation on root distribution, yield and water use efficiency (WUE) of maize crop in sandy soil. Four emitter types were used to irrigate the crop by three percentages 100, 80 and 60% of evapotranspiration (ETc). The emitters discharge and emission uniformity (EU) were evaluated. Under operating pressure of 100 kPa, the emitters Em1, Em2, Em3 were classified as excellent EU, while the Em4 was poor EU. The root distribution increased by increasing emitter EU with low discharge. Also, the distribution root decreased by reducing ETc% and increasing the distance from emitter. 60% ETc concentrated the roots near the emitters, while, 80% ETc has enough distribution to increase the plant ability to withstand winds. The highest yield was achieved with 100% ETc and Em1, while WUE of both 60% and 80% was approximately the same and greater than WUE of 100% ETc. It could be recommended that to have the highest yield of maize in sandy soil, a low discharge and excellent EU emitters should be used with adding 100% ETc. While, adding 80% ETc is preferred when the priority to water saving.
Keywords
Root distribution; Emitters; Emission uniformity; Water use efficiency; Evapotranspiration
Statistics
Article View: 183
PDF Download: 251