Growth and yield of potato in relation to application of Alphylax and fish oil as organic fertilizers


This study aimed to examine the activity of Alphylax and Fish oil fertilizers on growth and production of Potato (Everest variety) in the central regions of Iraq. The experiment was conducted in two seasons of 2017 using randomized complete block design with eleven treatment with three replicates including: control (T0), Alphylax (1, 2, 3 ml L-1) symbolized T2, T3, T4, fish oil (1, 2, 3 ml L-1) symbolized T5, T6, T7 and an interaction between Alphylax and fish oil (1+1, 2+2, 3+3, 1.5+1.5 ml L-1) symbolized T8, T9, T10, T11, respectively. The statistical analysis revealed significant differences of T10 in producing the highest values of aerial stem number, leaf number and plant dry weight for two seasons of 2017. T7 and T9 increased nitrogen (N%) in leaf for two seasons, while T10 increased percentages of phosphorus (P), potassium (K), and calcium (Ca) for two seasons. T10 and T4 increased plant yield to 0.871g and 426g for two seasons, respectively. Plant tuber number increased at 5.90, 2.60 tuber plant-1 in T10 and T5 for two seasons, respectively. T10 and T6 increased tuber weight at 198.1g and 203.7 g tuber-1, respectively. It is concluded that plants fertilized by Alphylax and fish oil had higher growth rates in compared to control group. The organic materials can be considered as an applicable fertilizer in the growth and yield performance of organic potato.


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