GHAID J. AL-RABADI, SADDAM A. AL-DALAIN, MUSTAFA AL-RAWASHDEH,
MOHAMED B. AL-NAWAISEH, AL-RAMAMNEH, EZZ AL-DEIN, JAWAD A. DALAEEN
AND HAMMAD K. ALDAL’IN
Department of Animal Production, Faculty of Agriculture, Mutah University, Al-Karak 61710, Jordan
*(e-mail : firstname.lastname@example.org; Mobile : 00962797119618)
(Received : October 8, 2019; Accepted : December 15, 2019)
Dill plant is well accepted as an important crop with important usage in the food and pharmaceutical industry. Quantifying production parameters of dill plant after nitrogen fertilizer application is necessary to determine profitability and helps in minimizing environmental pollution. The objective of this study was to predict morphological changes (number of seeds per umbel, number of umbels per plant, number of branches per plant and plant height) and production parameters (1000-seed weight, harvesting index, seed yield, above ground biomass, oil yield and yield content) of dill plants after five different urea application levels (0, 30, 60, 90 and 120 kg/ha). This study revealed the existence of excellent linear correlation between morphological changes and the level of urea application level [correlation value (r) ranged from 0.89 and 99]. This study also showed the existence of an excellent correlation between production parameters and urea application level (r ranged from 0.94 and 97). Under cultivation/climate conditions in this experiment, it can be concluded that the predetermined level of urea fertilizer can predicate morphological changes and production parameters in dill plants. From an economic perspective, the excellent linear fitting can provide a good vision to the usefulness of the application of a predetermined level of nitrogen application.
Key words : Dill plant, linear analysis, correlation, production parameters, nitrogen fertilizer