Which of the following elements is not essential for plant growth? ((MCAER 2014))

✅Explanation: Dendrology is the specific branch of botany that deals exclusively with the study of trees. It covers topics such as tree identification, classification, and the investigation of their structure, physiology, and ecology.

📌 Other Options Explanations:
-Option B: Botany is the broader field encompassing the study of all plants, including trees.
-Option C: Forestry is concerned with the management and conservation of forests, including the cultivation of trees.
-Option D: Arboriculture, as mentioned earlier, is more focused on the practical aspects of tree care and cultivation, rather than scientific research.