Reducing anti-nutritional factor and enhancing yield with advancing time of planting and zinc application in grasspea in Ethiopia

Journal of the Science of Food and Agriculture
Ashutosh SarkerMurari Singh

Abstract

Grasspea (Lathyrus sativus L.) is an important pulse crop for food, feed and sustainable crop production systems in Ethiopia. Despite its advantages in nutrition and adaptability to harsh climate and low fertile soil, it contains a neurotoxin, β-N-oxalyl-α,β-diamiono propionic acid (β-ODAP), which paralyses the lower limbs and is affected by genotypic and agronomic factors. To determine the effect of zinc application and planting date on yield and β-ODAP content of two genotypes, experiments were conducted in two regions of Ethiopia. The main effects of variety, sowing date and zinc and their interactions were significant (P < 0.001) for β-ODAP and seed yield, which had a linear relationship with zinc. For the improved grasspea variety, an application of 20 kg ha-1 zinc showed a reduction of β-ODAP from 0.15% to 0.088% at Debre Zeit and 0.14% to 0.08% at Sheno and increased its yield from 841 kg ha-1 to 2260 kg ha-1 at Debre Zeit and from 715 to 1835 kg ha-1 at Sheno. Early sowing showed a reduction in ODAP content in relation to the late sowing. An application of Zn beyond even 20 kg ha-1 with an early sowing is recommended for the improved variety. © 2017 Society of Chemical Industry.

References

Sep 1, 1990·International Journal of Epidemiology·R T HaimanotP S Spencer
Mar 1, 1988·Journal of Reproduction and Fertility·M A Mannan, P J O'Shaughnessy
Jul 28, 2010·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Shiv KumarA Sarker

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