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Effects of irrigation frequency and salinity under drip irrigation on okra (Abelmoschus esculentus L.)
S. Kumar, S. Kumar, S.K. Sharma, Rajpaul,
Published in Agri Bio Research Publishers
2016
Volume: 21
   
Issue: 1
Pages: 66 - 70
Abstract
Irrigation frequency is one of the most important decisions in drip irrigation particularly when saline water is used, which affects soil moisture regime, root distribution around the emitter, amount of water uptake by the plant and water loss through percolation. Therefore, a field study was conducted at CCS Haryana Agricutural University, Hisar during the kharif season of 2013 to compare the yield and yield attributed parameters of okra with different irrigation frequency and saline water under drip irrigation system. The experiment was conducted with two irrigation frequencies (daily, F, and alternate day, F2) and four salinity levels of irrigation water i. e. canal water ECiw = 0.3 (S1), saline water ECiw = 2.5 (S2), 5.0 (S3) and 7.5 (S4) with three replications. Salt built-up in the root zone under alternate day irrigation as compared to daily irrigation was slightly higher. Decreasing irrigation frequency with saline water further delay the fruiting indicated the role of irrigation frequency to manipulate the time of maximum fruits for okra. On comparing daily irrigation with alternate day irrigation of respective treatment (canal water, 2.5, 5.0, 7.5 dS/m) 7.22, 5.09, 13.54 and 17.67% higher yield was obtained in daily irrigation. On comparing drip irrigation frequency treatments, 7.32, 4.62, 13.52 and 17.10% higher water productivity in daily irrigation as compared to alternate day irrigation of respective treatments was observed. Higher yield and water productivity of okra under daily irrigation as compared to alternate day irrigation for different levels of salinity of irrigation water reflected the importance of frequency of irrigation for the use of saline water.
About the journal
JournalAnnals of Agri Bio Research
PublisherAgri Bio Research Publishers
ISSN09719660