EFFECT OF DIFFERENT TYPES OF EMITTERS AND IRRIGATION INTERVALS ON THE PRODUCTIVITY AND QUALITY OF SQUASH UNDER THE NILE DELTA CONDITIONS

Derbala, A. A.; Elwan, D. H.; Amer, M. M.

doi:10.21608/mjae.2021.104661.1052

EFFECT OF DIFFERENT TYPES OF EMITTERS AND IRRIGATION INTERVALS ON THE PRODUCTIVITY AND QUALITY OF SQUASH UNDER THE NILE DELTA CONDITIONS

Document Type : Original Article

Authors

¹ Prof., Ag. Eng. Dept., Fac. of Ag., Tanta U., Egypt.

² Grad. Stud., Ag. Eng. Dept. Fac. of Ag., Tanta U., Egypt.

³ Assist. Prof., Ag. Eng. Dept., Fac. of Ag., Tanta U., Egypt.

10.21608/mjae.2021.104661.1052

Abstract

Drip irrigation considered as one of modern irrigation systems which used to reduce water losses and increase water use efficiency. The present work was conducted in the experimental farm of Faculty of Agriculture, Tanta University, during summer 2019. The work amid to study the response of squash to three different irrigation intervals "irrigation day after day; irrigation every three days and irrigation every five days" using D₅₀₀₀, PC_ND and PC₂ emitters. The coefficient of variation "C.V", emission uniformity "EU", statistical uniformity coefficient "Us" and Christiansen uniformity "CU" were calculated for all tested emitters. The results revealed that a significant effect of the irrigation intervals on the flow rate of all emitters under study. D₅₀₀₀ showed the highest C.V followed by PC_ND type. The largest C.V was shown in D₅₀₀₀ under irrigation every 5 days while the lowest one was presented in PC₂ under irrigation day after day. EU, CU and Us values for the tested emitters were larger than 90%. PC₂ had the highest value of EU, CU and Us followed by PC_ND. Emission uniformity, CU and Us negatively associated with irrigation intervals. Squash plants under PC₂ emitter gave the highest fruit yield and fruit quality. The results revealed that a significant decrease in fruit yield and most related traits with the increase of irrigation intervals. Irrigated squash plants every three days resulted in high significant increase in fruit yield and fruit quality. Irrigated squash plants every three days using PC₂ was recommended to increase the yield under the Nile Delta conditions.

Keywords

Main Subjects

Agricultural Irrigation and Drainage Engineering

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