COMPARATIVE PERFORMANCE OF ONION UNDER DIFFERENT FERTILIZER LEVELS IN SURFACE AND DRIP IRRIGATION
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Date
2019-09-30
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Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra.
Abstract
The field experiment to study the “Comparative performance of onion under different fertilizer levels in surface and drip irrigation” was conducted at Chilli and Vegetable Research Unit, Dr. PDKV, Akola, which comes under Western Vidarbha Region of Maharashtra, during rabi season of 2018-19. The experiment, comprising of 4 treatments with 5 replications was laid out in randomized block design. In treatment T1, the fertilizers were applied through soil application with check basin irrigation. The fertigation levels of 60%, 80% and 100% recommended dose of NPKS were applied through drip irrigation (T2, T3 and T4). Plant spacing was 15 x 10 cm.
The total water requirement in treatment T1 (soil application with 100% RDF) was found 1000 mm, whereas in fertigation treatments using drip irrigation, the total 623.19 mm water was applied. This reflects saving of 37.68% water in drip irrigation as compared to surface irrigation (check basin) traditionally used for onion crop.
Treatment T2 (fertigation with 100% RDF) showed maximum values of growth parameters like plant height, number of leaves per plant and neck thickness during crop period.
The highest values of polar diameter and equatorial diameter were recorded in treatment T2 followed by treatments T3, T4 and T1. The maximum average weight of bulb (g), highest total bulb yield (t/ha), highest marketable bulb yield (t/ha) and maximum per cent marketable bulb yield was recorded in treatment T2 (fertigation with 100% RDF). All these parameters were recorded lowest in treatment T1 (soil application with 100% RDF).
Bolters percentage and rotten bulb percentage was found maximum in treatment T1 (soil application of fertilizers) whereas these values were lower in fertigation treatments indicating the superiority of fertigation over soil application of fertilizers. Highest percentage of double bulbs was found in treatment T4. The bulbs recorded under treatment T4 exhibited highest value of TSS followed by T3, while the bulbs observed under soil application of fertilizers showed lowest value of TSS.
The fertigation treatment T2 showed maximum B:C ratio of 2.77 whereas it was lowest (1.85) in treatment T1. The other fertigation treatments gave higher B:C ratios indicating the importance of using drip irrigation and fertigation technology for water and nutrient management in onion.
The treatment T2 (Fertigation with 100% RDF) was found best having highest B:C ratio and as water saving treatment, can be recommended for maximum onion production in Western Vidarbha region.
Description
The research study was conducted to study the Comparative performance of onion under different fertilizer levels in surface and drip irrigation during rabi season at Dr. PDKV, Akola during January 2019 to May 2019. The experiment was framed in randomized block design with four treatments and five replications. The treatments of study comprised of surface irrigation with 100% RDF and drip fertigation levels (100 %, 80 % and 60 % of RDF).
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Citation
ZANJAD, AJIT BANSI. (2019). Comparative performance of onion under different fertilizer levels in surface and drip irrigation. Department of Irrigation and Drainage Engineering, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. M. Tech. 2019. Print. xii, 82p. (Unpublished).