James A. Litsinger (auth.), E. A. Heinrichs, T. A. Miller's Rice Insects: Management Strategies PDF

By James A. Litsinger (auth.), E. A. Heinrichs, T. A. Miller (eds.)

Due to the global significance of rice as a crop plant, the biology of rice pests is of significant curiosity to agricultural learn. This well timed ebook brings jointly contributions from the fields of entomology, agronomy, inhabitants ecology, and biostatistics to supply a entire survey of rice-insect interplay. one of the issues mentioned are - crop loss review - fiscal thresholds and damage degrees for incest pests - mosquito leafhoppers and planthoppers inhabitants dynamics - pheromone usage - recommendations for predator overview - chemical dependent for insect resistance - purposes of tissue tradition - structures research and - rice pestmanagement. With its emphasis on experimental suggestions of pest research and keep an eye on, Rice bugs: administration Strategies could be a useful reference for researchers and practitioners alike.

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Extra resources for Rice Insects: Management Strategies

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In a farmer's field, insect pests may selectively choose plants on which to oviposit or feed based on vigor or other criteria. Also, the result is still artificial if the yield is compared with a caged, uninfested plant serving as a check. A partial solution is to cage the plant for only a few days or to design a cage with the top open. However, control of pest incidence is less with more open conditions. Artificial infestation is not only time consuming in that insects must be reared or collected, but it may not achieve the desired result (Smith 1967).

The soil and water regime can be made uniform. Influence from other pests and stresses can be eliminated so that one pest can be studied at a time. Desirable combinations of pests and stresses can also be achieved. The greatest disadvantage, of course, is that a greenhouse is a very artificial environment and the results will have to be confirmed in the field. Sometimes the results agree, whereas in other cases they do not. Field trials give the opposite advantages and disadvantages. It is often difficult to get zero infestation from the target pest in the field to calculate a pest free yield.

S1------i--4l i. Compet ition curve B Fig. IlA,B. Relationship between insect infestation level and subsequent levels on yield incorporating three curves: i competition curve, ii damage curve and iii infestation curve. (B) The effect of increasing insect aggregation (increasing progressively from curves 1 to 3 and shown by arrows) of insect infestation and subsequent damage on yield. (After Hughes and McKinlay 1988). Crop Loss Assessment in Rice 27 the plants, but the disadvantage is that the pest may appear in low numbers or not at all.

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