释义 |
pre-emergence in British English (ˌpriːɪˈmɜːdʒəns) adjectiveof or relating to the period prior to emergence of something Examples of 'pre-emergence' in a sentencepre-emergence All the herbicides were applied in pre-emergence.Treatments were: cover species, cover management and application or not of pre-emergence herbicide.This disease may infect rice plants from the pre-emergence stage to the mature stage.However, the pathogenic oomycetes rarely caused pre-emergence seedling rot under conditions without flooding.Oxadiazon in pre-emergence and linuron in post-emergence were the most efficient in controling gresses.As the length of the flooding period increased, pre-emergence seedling rot also increased.The dry matter of the plants was reduced both in the pre-emergence and post-emergence applications.The efficacy of pre-emergence herbicides increased with increasing application rates and decreased with increasing rice residue mulching.The method of incorporation in pre-planting was not found to be more advantageous than the pre-emergence treatment. |