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

BACKGROUND 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‐ODA...

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Published in:Journal of the science of food and agriculture 2018-01, Vol.98 (1), p.27-32
Main Authors: Sarker, Ashutosh, Fikre, Asnake, El‐Moneim, Ali M Abd, Nakkoul, Hani, Singh, Murari
Format: Article
Language:English
Subjects:
Adaptability
Agricultural production
Agronomy
Climate
Crop Production
Crop production systems
Crop yield
Crops
Ethiopia
Fertilizers - analysis
Food production
Genotype
Genotypes
grasspea
Lathyrus - chemistry
Lathyrus - genetics
Lathyrus - growth & development
Lathyrus - metabolism
Lathyrus sativus
Nutrition
Planting
planting date
Propionic acid
Reduction
Soil - chemistry
Time Factors
Zinc
Zinc - analysis
Zinc - metabolism
β‐ODAP
zinc application
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Summary:BACKGROUND 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. RESULTS 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. CONCLUSION 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
ISSN:0022-5142
1097-0010
DOI:10.1002/jsfa.8433