Effect of irrigation regime on yield, harvest index and water productivity of soybean grown under different precipitation conditions in a temperate environment
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2018
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Prikaz svih podataka o dokumentuApstrakt
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 (I-100), 65% and 40% of full irrigation (I-65 and I-40) and non-irrigated control (I-0). On average, the I-0 treatment resulted in the highest harvest index (HI) and I-100 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. 165 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.
Ključne reči:
Evapotranspiration / Agricultural water management / Glycine max (L.) Merr. / Water productivity / Yield compositionIzvor:
Agricultural Water Management, 2018, 210, 224-231Izdavač:
- Elsevier Science Bv, Amsterdam
Finansiranje / projekti:
- Nove tehnologije za monitoring i zaštitu životnog okruženja od štetnih hemijskih supstanci i radijacionog opterećenja (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-43009)
DOI: 10.1016/j.agwat.2018.08.002
ISSN: 0378-3774