Population density and row spacing effects on yield and other agronomic attributes of lentils (Lens culinaris Med.)
1987
Nourallah, M. (American Univ. of Beirut (Lebanon). Dept. of Crop Production and Protection) | Ali, M.M.
A field experiment was conducted at the International Center for Agricultural Research in the Dry Regions (ICARDA) substation in Terbol, Lebanon to determine the effect of four population densities (100, 200, 300 and 400 plants/m2) and four row spacings (20, 30, 40 and 50 cm) in a factorial combination on yield and agronomic attributes of lentils. Increasing population density caused an increase in plant height, lodging, leaf area index (LAI) and the biological yield of the crop while days to maturity, number of peducles per plant and the harvest index decreased. Wider row spacing caused a decrease in all the variables measured except the number of pods per peduncle, the number of seeds per pod and 100-seed weight, which remained unaffected. LAI increased with a wider row spacing only at the early growth stages but later on showed a declining trend. A population density of 200 plants/m2 with the lowest row spacing (20 cm) resulted in the highest grain yield
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