Impact of fertility regimes on the growth, seed yield and oil content of canola

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Research Paper 01/05/2019
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Impact of fertility regimes on the growth, seed yield and oil content of canola

Naseer Ahmed Marri, Ghulam Ali Bugti, Gaji Bux Bugti, Attaullah Rakhshani, Muhammad Tariq Reki, Syed Ahmed Shah, Mehar Un Nisa Narejo, Hafiz Tassawar Abbas, Muhammad Afzal Roonjha
J. Bio. Env. Sci.14( 5), 13-19, May 2019.
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In order to investigate the effect of different fertility regimes on the growth, seed yield and oil content of the canola crop. The Nitrogen (N), phosphorus (P), and potassium (K) were mixed and applied at different levels. The results of the NPK @ 120kg 60kg and 100kg ha-1 took 81.33 days to flowering, 117.33 days to maturity, 157.33 cm plant height, 660 pods plant-1, 14.66 seeds pod-1, 0.058g seed weight pod-1, 3.43g seed index value, 2477.33kg seed yield ha-1 and 41.64% oil content. NPK @ 120-60-75kg ha-1 resulted flowering in 81 days, maturity in 116.33 days, 158cm plant height, 667.66 pods plant-1, 14.99 seeds pod-1, 0.059g seed weight pod-1, 3.45g seed index value, 2497.33kg seed yield ha-1 and 42.75% oil content. Similarly, NPK @ 90-60-75kg ha-1 resulted flowering in 78 days, maturity in 114 days, 152cm plant height, 677.33 pods plant-1, 15.22 seeds pod-1, 0.060g seed weight pod-1, 3.48g seed index value, 2553.66kg seed yield ha-1 and 43.34% oil content. It was concluded that application of N-P-K fertilizers at the rate of 90-60-75kg ha-1 proved to be an optimum fertility regime for economical canola production, because seed yield of highest under 90-60-75kg ha-1 and either with increase or decrease over this N-P-K rate adverse effects on almost all the parameters were noted. Moreover, inverse situation was noted in case of oil content and as the N-P-K rate increased, the oil content was simultaneously decreased.


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