茁壮成长
发表于 2025-3-25 05:09:17
Book 1980and gen eral nature of insects present special problems to the student of entomology. For example, many commercially available instruments are geared to measure in grams, while the forces commonly encountered in studying insects are in the mil ligram range. Therefore, techniques developed in the s
BALE
发表于 2025-3-25 09:04:09
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cancer
发表于 2025-3-25 15:19:02
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临时抱佛脚
发表于 2025-3-25 17:33:51
Sampling Leafhoppers on Soybeantional Reference Collection of Soybean-Associated Arthropods (IRCSA unpublished). Sixteen species were listed from Mississippi (Kincade et al. 1970), and 30 species were listed from Missouri (Blickenstaff and Huggans 1974). A simple key for the identification of the most common genera of Cicadellidae is presented in an appendix to this chapter.
夜晚
发表于 2025-3-25 21:45:34
Introduction to Sampling Theory tool which the entomologist should use to obtain certain information, provided there is no easier way to get the information.” Sampling is a means to an end. Only by having a clear understanding of the end can the sampling program be optimized.
Introduction
发表于 2025-3-26 02:21:23
Sequential Sampling Plans for Soybean Arthropodsient numbers to justify the expense of specific management tactics (e.g., insecticide application). Also, assessment of the densities of the naturally occurring biological control agents is becoming more important in the decision-making processes.
Reservation
发表于 2025-3-26 08:09:50
Sampling Aphids in Soybean Fieldsually temporary colonies in soybean: . in an experimental plot in Illinois and in the high jungles of Peru and . Glover in Ecuador. . established colonies on greenhouse grown soybean (M. E. Irwin unpublished).
preeclampsia
发表于 2025-3-26 08:57:37
Sampling Phytophagous Thrips on Soybeanain thrips in and extract them from conventional sampling devices once they are collected, (4) phytophagous thrips are relatively small and may appear inconsequential compared to larger pests, and (5) they are somewhat difficult to identify to species, especially the immature stages.
RODE
发表于 2025-3-26 15:49:57
0172-6188The size and gen eral nature of insects present special problems to the student of entomology. For example, many commercially available instruments are geared to measure in grams, while the forces commonly encountered in studying insects are in the mil ligram range. Therefore, techniques develope
Substance
发表于 2025-3-26 17:59:51
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