Fertilizer-Mediated Ditrophic Interactions between Aphis gossypii and Cucumber
Author(s):
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
The effects of different fertilizers including Cow manure, Vermicompost, NPK (20-20-20 NPK), NPKBN (NPK̺ⶡ뚜뗪 vinelandii), NPKBP (NPK㶩 agglomerans㻇깶覨鶫 putida), and NPKBNBP (NPK̺ⶡ뚜뗪 vinelandii㶩 agglomerans㻇깶覨鶫 putida) were compared with the control treatment. Comparisons included not only the nutrient and chlorophyll content of cucumber leaves, but also the demographic parameters and body size of Aphis gossypii Glover. The highest nitrogen content (2.45%) was observed in NPKBN and the highest phosphorus, along with potassium content (0.58 and 12.17%, respectively) was observed in cow manure treatment. The highest chlorophyll content (37.51 SPAD units) was measured in NPKBNBP treatment. Results showed that the intrinsic rate of increase (r) varied from 0.409 (in Cow manure) to 0.480 d-1 (in NPKBP) under application of different fertilizers. Net Reproductive rate (R0) varied from 71.65 to 79.25 nymphs/individual in Vermicompost and NPKBP treatments, respectively. The largest (1.28 mm) and smallest (1.00 mm) body length of the aphids was measured on Vermicompost and Control, respectively. Results revealed that NPKBP was the most suitable fertilizer for population growth of A. gossypii, compared with the other treatments, and the aphids longevity and fecundity was relatively low under Vermicompost application.
Keywords:
Language:
English
Published:
Journal of Agricultural Science and Technology, Volume:20 Issue: 5, Jul 2018
Pages:
987 to 998
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