Growth, water productivity and root architecture of rice-wheat cropping system under different methods of irrigation
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Date
2023
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Punjab Agricultural University
Abstract
A study entitled “Growth, water productivity and root architecture of rice-wheat cropping system under different methods of irrigation” was conducted during kharif and rabi, 2020 at the research farm of Department of Agronomy, Punjab Agricultural University, Ludhiana, Punjab. Soil was loamy sand in texture. Experiment was carried out in a randomized complete block design (RCBD) with 14 treatments with two methods of irrigation [surface drip (SD) and subsurface drip (SSD)] having two methods of sowing [direct seeded (DSR) and transplanted rice (PTR), followed by wheat in these plots] and three levels of irrigation (140%, 160%, 180% ETc in rice and 60%, 80% and 100% ETc in wheat) and 2 control (flood DSR followed by wheat with PAU recommendation and flood PTR followed by wheat with PAU recommendation). The grain yield of rice was statistically similar between DSR control and 180% ETc irrigated with either SSD or SD, established as DSR or PTR. DSR with 180% ETc in SSD saved 26% irrigation water as compared to DSR flood, 33% water as compared to PTR flood and 1.8% water in comparison to SSD PTR 180% ETc. Grain yield of wheat irrigated with 80% ETc was statistically at par with 100% ETc but it saved 17.1% water as compared to 100% ETc and 42% in comparison to flood. Root characteristics were not statistically affected with irrigation methods, establishment methods and irrigation levels in rice and wheat. System productivity was statistically at par between 180% ETc rice-100% ETc wheat and 160% ETc rice- 80 ETc wheat.
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Navdeep Singh (2023). Growth, water productivity and root architecture of rice-wheat cropping system under different methods of irrigation (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.