Effect of container coating materials on the growth of tomato, eggplant and pepper
2000
Mookda Suksawat | Suwaree Saijeen
This study focused on the using of coating material (copper hydroxide) for controlling seedling growth of three vegetables : tomato, eggplant and pepper, in order to prevent root spiraling. Each kind of vegetables was planted separately by direct seeding to medium in plastic containers which were uncoated and coated with 7.1, 14.2, 21 and 35 percent Cu (OH)2. The experimental design for each kind was Completely Randomized Design (CRD) with 5 treatments ; plant height, leaf number, root length, secondary root number, secondary root length and degree of root coverage on media side surface were observed 10, 20 and 30 days after seeding. All the three vegetables responded in the same way. Coating material at 7.1, 14.2 and 21 percent CU(OH)2 did not affect shoot growth such as height and leaf number. Since these treatments reduced both root and secondary root length, there were no root covering the media side surface. However, the coating of Cu(OH)2 resulted in increasing secondary root number while the coating of 35 percent CU(OH)2 reduced the vegetable growth, plant height, leaf number and secondary root number when compared to the other coating concentrations and uncoating. these differences were statistically significant.
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