Competitive ability of different density levels of swamp cabbage (Ipomea aquatic L.) with transplanted rice (Oryza sativa L.) [manuscript]
Date
2020
Authors
Mariel V. Macapulay
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Abstract
The study was conducted to determine the competitive ability of Ipomea aquatic at different density levels (3, 6, 9, and 12) and to determine the yield loss of rice due to infestation of the weed. Black plastic basin was used in the experiment measuring 18 cm in depth and 186 cm2 area filled with 14 kg of sterilized soil. It was consisted of five treatments with four replications using Randomized Complete Block Design. Data were statistically analyzed and treatment means were compared using Leaf Significant Difference (LSD) at 5% level of significance.
The results of the study revealed that at different density levels of Ipomea aquatic which allowed to compete with rice showed no significant effects in terms of plant height, number of leaves, panicles, fresh weight and dry weight. However, number of rice tillers per plant were significantly reduced in treatments 3 (6.80), 9 (6.80) and 12 (5.80) densities of I aquatic as compared to rice plant alone (density). Percent yield loss was also determined and it was observed that the presence of I aquatic produced yield loss from 21.80% up to 33.69%.