While warmer temperatures aid germination, most seedlings grow best at a high of 65 to 70 degrees Fahrenheit during the day and nighttime temperatures of 55 to 60 degrees Fahrenheit at night. Overheating, especially under a germination dome or on a heating mat, can also cause a burst in growth that leads to legginess. In a similar vein, poor soil with improper drainage can stunt growth as seedlings struggle to absorb the necessary water and nutrients. Seedlings may also grow leggy if they are not adequately watered. “If the plants are close together than the shade each other and compete for the light that is available.”
“Crowding is related to the light conditions,” Gaper said. Environ Sci Pollut Res 26:24474–24481.Overcrowding in seedling pots will also cause legginess as the seedlings compete for light. Ĭhen H, Lin L, Liao MA, Wang J, Tang Y, Sun GC, Liang D, Xia H, Deng QX, Wang X, Lv XL, Ren W (2019) Effects of intercropping with floricultural accumulator plants on cadmium accumulation in grapevine. and Brassica juncea L.) intercropping system.
Beijing (in Chinese)Ĭao X, Luo J, Wang X, Chen ZQ, Liu GQ, Khan MB, Kang KJ, Feng Y, He ZL, Yang XE (2020) Responses of soil bacterial community and Cd phytoextraction to a Sedum alfredii-oilseed rape (Brassica napus L. īao SD (2000) Soil agrochemical analysis. Īn L, Pan Y, Wang Z, Zhu C (2011) Heavy metal absorption status of five plant species in monoculture and intercropping. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.Īi S, Guo R, Liu B, Ren L, Naeem S, Zhang WY, Zhang YM (2016) A field study on the dynamic uptake and transfer of heavy metals in Chinese cabbage and radish in weak alkaline soils. From the antioxidant system, the performance of the three seedlings intercropped together is better than the two however, the accumulation of Cd shows the opposite trend, and the participation of cabbage in the intercropping is relatively conducive to reducing the Cd content in the edible parts.Ĭadmium Lettuce Mutual intercropping Pakchoi Physiological Radish. When intercropping with pakchoi or lettuce separately or together, it promoted the accumulation of Cd in radish root when intercropping with pakchoi, the value of TF was the smallest. At the same time, root or shoot bio-concentration factors also performed the same trend, and TF was the smallest and less than 1 however, the TF of lettuce is greater than 1. When intercropped with pakchoi and lettuce, the Cd content in the roots and shoots of pakchoi is higher and lower, respectively. Intercropping increased the soluble sugar and proline content in the lettuce seedlings, while those in the radish and lettuce seedlings reduced or had no significant effect. When three seedlings were intercropped together, the antioxidant enzyme activity of pakchoi, lettuce, and radish increased and the content of malondialdehyde decreased, except that the superoxide dismutase activity of radish is inferior to the value of radish and pakchoi intercropping. Intercropping is not conducive to the accumulation of chlorophyll and biomass content of pakchoi, lettuce, and radish. ramosa Hort.), and radish (Raphanus sativus L.) seedlings under monoculture, mutual intercropping of two or three varieties. This study investigated the physiology and cadmium (Cd) content of pakchoi (Brassica chinensis L.), lettuce (Lactuca sativa L. Intercropping can affect the growth and elemental absorption of vegetables.
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