The effect of coconut oil and NPK on vegetative and flowering growth on Gazania splenden L. _
Keywords:
Gazania splendenAbstract
of Horticulture and Landscape Engineering, College of Agriculture, University of Basra during the 2022-2023 agricultural season with the aim of studying the effect of spraying with coconut liquid and NPK fertilizer. For casa nia plant L. Gazania splenden . The study was carried out as a factorial experiment with two factors using an RCBD design . The first factor represented the spraying of coconut liquid at three concentrations (0, 5, 10) mg L - 1 and the second factor was NPK fertilizer at three concentrations (0, 50, 100) mg L -1 . Spraying at a rate of two sprays every two weeks, and the results of the study can be summarized as follows:
Spraying treatments with coconut liquid showed a positive effect on most of the vegetative and flowering growth indicators of cassia plants. The spraying treatment with coconut liquid at a concentration of 10 mg L -1 was superior to -1 Significantly, with the highest rate recorded in plant height, number of leaves, flower stand height, flower diameter, number of petals, and total chlorophyll content of leaves.
2 - Spraying treatments with NPK fertilizer showed a positive effect on most of the vegetative and flowering growth indicators of cassia plants. The spraying treatment with a concentration of 100 mg L -1 excelled by recording the highest rate of plant height, number of leaves, flower stand height, flower diameter, number of petals, and total chlorophyll content of leaves.
3 - The interaction treatments between the two study factors gave a positive, significant effect on most of the studied traits. The interaction treatment between the two concentrations, 10 mg L -1 of coconut liquid and 100 mg L -1 of NPK fertilizer, recorded the best significant results for growth indicators in plant height, flower diameter, podium, and flowering.
As for the intervention concentration, 5 mg/L of coconut liquid and the concentration of 0 mg/L of NPK fertilizer. It gave the best results in terms of flower stand height and number of petals. The treatment with a concentration of 50 mg L-1 also gave the highest chlorophyll content in the leaves .
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