Department of Plant Protection, Faculty of Agriculture, University of Mohaghegh Ardabili, Ardabil, Iran.
J Econ Entomol. 2011 Aug;104(4):1379-83. doi: 10.1603/ec10120.
Worldwide, the developing industry of cucumbers (Cucumis sativus L.) grown in greenhouses is threatened by damage from sucking pests, especially aphids. Among these, the melon aphid, Aphis gossypii Glover (Hemiptera: Aphididae), is the most serious. We tested the effect of two cucumber cultivars ('Royal' and'Storm') and three vermicompost concentrations (0 [control], 20, and 30%) in field soil on the development and fecundity rates of A. gossypii, by using a randomized complete block design with four replicates as a factorial experiment. The developmental times of nymphs reared on plants grown into the three vermicompost concentrations ranged from 5.5 (0%) to 8.7 (30%) d (on Storm) and from 4.3 (0%) to 7 (30%) d (on Royal). The developmental time of melon aphid's nymphs was greatest on plants grown in the culture medium with 30% vermicompost rate and least on plants reared in the soil without vermicompost. The intrinsic rate of natural increase (r,,) of A. gossypii ranged from 0.204 d(-1) on plants grown in the soil amended with 30% vermicompost rate (on Storm seedlings) to 0.458 d(-1) on plants grown in the soil without vermicompost (on Royal seedlings). Accordingly, our findings confirm that a combination of a low level of vermicompost and a partially resistant cucumber cultivar might play an important role in managing this aphid on cucumbers in greenhouses.
全世界范围内，温室种植的黄瓜（Cucumis sativus L.）产业受到吸食性害虫，尤其是蚜虫的威胁。在这些害虫中，棉蚜（Aphis gossypii Glover）是最严重的一种。我们通过随机完全区组设计进行了一项四重复的析因实验，以评估两种黄瓜品种（‘Royal’和‘Storm’）和三种堆肥浓度（0[对照]、20%和 30%）在田间土壤中对棉蚜发育和繁殖率的影响。在三种堆肥浓度下，饲养在植物上的若虫的发育时间范围为 5.5（0%）至 8.7（30%）天（Storm 品种）和 4.3（0%）至 7（30%）天（Royal 品种）。在含有 30%堆肥率的培养基中生长的植物上，棉蚜若虫的发育时间最长，而在不含堆肥的土壤中生长的植物上则最短。棉蚜的内禀增长率（r，）范围为 0.204 d(-1)，在含有 30%堆肥率的土壤中种植（Storm 品种的幼苗），到 0.458 d(-1)，在不含堆肥的土壤中种植（Royal 品种的幼苗）。因此，我们的研究结果证实，低水平的堆肥和部分抗虫黄瓜品种的结合可能在温室黄瓜上管理这种蚜虫方面发挥重要作用。
