Effect of irrigation regime on yield, harvest index and water productivity of soybean grown under different precipitation conditions in a temperate environment

Boško Gajić, Branka Kresović, Angelina Tapanarova, Ljubomir Životić and Mladen Todorović

Agricultural Water Management, 2018, vol. 210, issue C, 224-231

Abstract: In temperate climatic regions, agricultural production depends on precipitation amount and its distribution during the growing season. A 3-year field study was conducted to investigate the effects of different irrigation regimes on yield parameters and water productivity of sprinkler-irrigated soybean [Glycine max (L.) Merr.], grown under wet, semi-dry and dry conditions in a temperate environment. Four irrigation levels were applied: full irrigation (I100), 65% and 40% of full irrigation (I65 and I40) and non-irrigated control (I0). On average, the I0 treatment resulted in the highest harvest index (HI) and I100 produced the lowest HI. A significant quadratic correlation between seed yield and crop water use was observed in dry and semi-dry year. The irrigation regime significantly influenced seed yield and water use. I65 treatment produced the highest seed yield (3.69 t ha–1) and showed the highest water productivity (WP) (0.90 kg m–3) and irrigation WP (1.08 kg m–3). The present study indicated that irrigation is necessary for soybean cultivation in semi-dry and dry years i.e., when seasonal precipitation is lower than about 300 mm. In wet years, with a favourable amount and distribution of precipitation during the growing season, yields are similar to those achieved with irrigation and high ET values of soybean are attributable to increased evaporation.

Keywords: Evapotranspiration; Agricultural water management; Glycine max (L.) Merr.; Water productivity; Yield composition (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (9)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378377418303147
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:210:y:2018:i:c:p:224-231

DOI: 10.1016/j.agwat.2018.08.002

Access Statistics for this article

Agricultural Water Management is currently edited by B.E. Clothier, W. Dierickx, J. Oster and D. Wichelns

More articles in Agricultural Water Management from Elsevier
Bibliographic data for series maintained by Catherine Liu ().