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Research on Crops

Onion growth, yield and water productivity as influenced by irrigation levels under drip irrigation and plastic mulch

DOI: 10.31830/2348-7542.2024.ROC-1145    | Article Id: ROC-1145 | Page : 626-634
Citation :- Onion growth, yield and water productivity as influenced by irrigation levels under drip irrigation and plastic mulch. Res. Crop. 25: 626-634
SANTOSH DT, SAGAR MAITRA, MASINA SAIRAM AND DINKAR J GAIKWAD sagar.maitra@cutm.ac.in
Address : Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur-721302, West Bengal, India
Submitted Date : 26-10-2024
Accepted Date : 26-11-2024
Online Published:

Abstract

In the current agricultural circumstances, when farmers are struggling to find enough water for irrigation and want to maximize their production by enhancing water productivity, drip irrigation is one of the most important methods. By reducing water and nutrient losses, the application of plastic mulch combined with drip watering can maximize onion yield. A field study was carried out in the Precision Farming Development Center's experimental field at the Indian Institute of Technology, Kharagpur, India, from November to March of two consecutive seasons (2022–23 and 2023–24) to evaluate the optimum water needed to achieve the maximum yield under subsurface drip irrigation. The objective of the study was to determine the optimum crop water requirement for onion under plastic mulch and subsurface drip irrigation. The growth, yield, quality and water productivity response of onion under different level of irrigation using subsurface drip and plastic mulch also studied. The result showed that biometric parameters for onion under 100% irrigation water requirement along with plastic mulch (T2) was greater among all the treatments for both years with plant height (71 cm), number of leaves (13.3), bulb diameter (6.6 cm), bulb weight (126 g) and onion marketable yield (36.7 t/ha). These results were followed by treatment with 80% of water requirement using drip along with mulch. However, the biometric, yield and quality parameters of treatment 80% of water requirement using drip along with mulch were not statistically significant with the treatment 100% of water requirement using drip along with mulch. Therefore, study concluded that the treatment with 80% of water requirement using drip along with mulch might be recommended to achieve statistically on par onion yield in comparison to the yield of treatment T2 using optimum crop water requirement under subsurface drip irrigation and plastic mulch. 

Keywords

Crop water requirement economic feasibility onion plastic mulching reference evapotranspiration yield

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