| 词汇 | example_english_defoliation |
| 释义 | Examples of defoliationThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. The effects of artificial defoliation on leaf chemistry were monitored. In the case of insects that cause defoliation in both natural forests and plantations, outbreaks are most likely to occur in plantations. All surviving defoliated plants produced flowers irrespective of the level of defoliation. As defoliation was conducted after tassel initiation, tasselling and silking were not delayed by defoliation. Increment cores were sampled for radial growth measurements from trees subjected to slight, moderate and heavy defoliation. Defoliation of sorghum and wheat leads to control of phenology and enhanced water use efficiency. This study shows that, under well-watered conditions, defoliation resulted in either yield reduction or no significant yield change. In 1996-97, defoliation was evident in 100% of plants resulting in 96% leaf area loss. Under anticipated drought stress, defoliation could be an important management practice to reduce drought-induced yield decrease, but this needs to be tested under field conditions. So, for palms, defoliation might not be a direct cause of plant mortality. Heavy defoliations due to late leaf spot, however, were observed for the 2003 rainy and the 2003 dry season. An assessment of techniques for measuring herbivory: is rainforest defoliation more intense than we thought? Early spring defoliation patterns can condition the sward for mid-season growth by promoting leafier herbage with fewer reproductive tillers. This lack of effective defoliation also required slower harvest machinery operation, and occasional repeated mechanical pickings. The decrease in production was mainly caused by increased abscission of fruiting for ms (squares and young bolls) after defoliation. Concentrations of soluble tannins and carbohydrates in leaves were significantly lower at 50% defoliation compared with the control. Well-irrigated and water-stressed plants were subjected to three levels of defoliation: 0, 33 (at each of two occasions) and 67 % green leaf area removal. Seedlings from large seeds tolerate defoliation better: a test using phylogenetically independent contrasts. These diseases cause premature defoliation and are commonly a major constraint to both seed yield and good quality haulm production. Defoliation levels increased after the drought, perhaps due to a resurgence of insect populations. The fact that mangroves survive in habitats generally stressful to higher plants means that severe defoliation may have strong fitness implications for the trees. Defoliation was unimportant to the vast majority of seedlings at any one time. Therefore, under water stress the harvestable product of cotton plants with 67 % defoliation was double that of non-defoliated control plants. Total nitrogen also decreased significantly with increased per cent defoliation. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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