Modulation in growth, development, and yield of Camelina sativa by nitrogen application under water stress conditions
2017
Waraich, Ejaz Ahmad | Ahmed, Zeeshan | Ahmad, Rashid | Saifullah, | Shahbaz, Muhammad | Ehsanullah,
Camelina sativa has rejuvenated as a successful oilseed crop in the recent years. It is a low-input-requiring crop with an unusual fatty acid composition. A pot experiment was conducted in rain-out shelter to investigate the effect of different nitrogen levels (N ₀ = 0, N ₁ = 50, N ₂ = 100, and N ₃ = 150 kg ha ⁻¹) on the growth and yield of two C. sativa genotypes (Australian and Canadian) under normal [100% field capacity (FC)] and water stressed (60% FC) conditions. The experiment was laid out in a completely randomized design with factorial arrangement having three replicates in the Department of Crop Physiology, University of Agriculture, Faisalabad. The results indicated that nitrogen doses and water stress levels significantly affected the growth and yield of C. sativa . Maximum values for growth indices like leaf area index (LAI), crop growth rate (CGR), leaf area duration (LAD), net assimilation rate (NAR), and yield attributes were observed under N ₂ treatment (100 kg ha ⁻¹) followed by the treatment in which nitrogen was applied at the rate of 50 kg ha ⁻¹. However, growth and yield components significantly reduced under water stress conditions (60% FC). Of both the genotypes, Australian Camelina performed better as compared to Canadian Camelina under both non-stress and drought stress conditions.
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