Effect of foliar aqueous garlic extracts on the growth and yield of indian mustard (Brassica juncea (L.) Czernjaew)

The extensive use of chemical fertilizers possess serious treats to environment, increase pest resistance development, and decline the food safety. Applying plant natural extract to partially replace the chemical fertilizer is a promising approach towards achieving sustainable agriculture development. Therefore, an experiment was conducted at University Malaysia Kelantan (UMK) Jeli Campus, Kelantan, Malaysia to evaluate the efficacy of aqueous garlic extracts on the growth and yield of Indian mustard (Brassica juncea (L.) Czernjaew). In this study, Indian mustard plants were treated with foliar application of aqueous garlic extract under shelter house. The aqueous garlic extract was applied at 15 and 25 days after seed sowing with three application rates: 0 (control) (TO), 50 lig (T1), 100 jiginL-1 (T2), and 200 1.1g mL-1 (T3). The result from this study showed that there was significant stimulating effect on the growth and yield of Indian mustard at an application rate of 100 lag mL-1 (T2) for all plant growth parameters, except chlorophyll content. It was found that T2 showed significant increment (P<0.05) in term of plant height (60.58%), fresh weight (67.29%), dry weight (63.74%) and leaf diameter (27.09%) as compared to control. However, the chlorophyll content of Indian mustard at T2 was likely similar to control and T3. Thus, this study proved that the optimum growth and yield of Indian mustard was successfully achieved when the plant treated with 100 1..tg mL-I foliar application of aqueous garlic