ISSN : 0975-3710
EISSN : 0975-9107
A.B. ZANJAD1, A.R. PIMPALE2*, S.M. GHAWADE3, S.B. WADATKAR4
1Department of Irrigation and Drainage Engineering, Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola, 444104, Maharashtra, India
2Department of Agriculture Engineering, College of Agriculture, Nagpur, Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola, 444104, Maharashtra, India
3Department of Horticulture, Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola, 444104, Maharashtra, India
4College of Agriculture Engineering, Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola, 444104, Maharashtra, India
* Corresponding Author : arpimpale@gmail.com
Received : 24-05-2021 Accepted : 27-09-2021 Published : 30-09-2021
Volume : 13 Issue : 9 Pages : 10876 - 10879
Int J Agr Sci 13.9 (2021):10876-10879
Keywords : Fertigation, Onion, Akola Safed, Drip irrigation, Soil application of fertilizers
Conflict of Interest : None declared
Acknowledgements/Funding : Author thankful to Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola, 444104, Maharashtra, India for providing facilities to carry out this experiment
Author Contribution : All authors equally contributed
Investigation on the effect of different fertigation levels and soil application of fertilizers was carried out at Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra during rabi season of 2018-19. Akola Safed cultivar (white onion) with spacing of 15 x 10 cm, was used for the study. The treatments comprised of one treatment of application of recommended dose fertilizers (RDF) to the onion crop planted as per traditional system and irrigated by surface irrigation system and three treatments of fertigation with 100%, 80% and 60% of RDF respectively (drip irrigation) with five replications in randomised block design. Fertigation with 100 % RDF recorded highest values of average weight of bulb (148.5 g), total bulb yield (32.28 t/ha), marketable bulb yield (27.85 t/ha), per cent marketable bulb yield (83.17%) followed by fertigation with 80 % and 60% of RDF. The lowest values were recorded in soil application of fertilizers with RDF. 71.7%, 54.87% and 21.58% more yield of onion over conventional method of irrigation and fertilization was obtained by fertigation of 100%, 80% and 60% RDF, respectively. The total water requirement of onion under surface irrigation was found to be 1000 mm, whereas it was found 623.19 mm when drip irrigation was used for fertigation. Thus, by using drip irrigation, 37.68% irrigation water was saved over surface method of irrigation. The crop water use efficiency in surface irrigation was 0.191 t/ha-cm whereas in fertigation with 100% RDF it was 0.518 t/ha-cm followed by 0.467 t/ha-cm and 0.381 t/ha-cm in fertigation of 80% RDF and 60% RDF, respectively. Highest benefit cost ratio 2.77 was recorded in fertigation of 100%, RDF. It is concluded that fertgation with 100 % recommended dose of fertilizers (N:P:K:S) with 11 given splits, is most suitable in order to get maximum yield, water use efficiency and benefit cost ratio for onion crop
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