borer Maksud & Definisi

Contoh borer

• The results showed that the remaining lepidopteran stem borer families and subfamilies have restricted host plant ranges.

• For these pest groups, climatic conditions and geographical distribution of pests (downy mildews, corn borers, etc.) restrict the importance to some hot spots.

• To enable measuring the effect of reduced borer densities on maize yield, the maize monocrop and all intercrops were grown with and without insecticide treatment.

• Top borers attack the youngest part of the plant top, and usually destroy the growing point.

• Similar results have been obtained by several authors who have studied the effect of nutrient factors in diapause induction in stem borers.

• Some planters do not realise the disastrous effects which follow when cane-tops infested with borers are planted.

• It should be an invaluable addition to the library shelf for all those with a professional interest in stem borer pest management.

• The number of surviving larvae+pupae recovered and the length of stalk bored were used as measures of borer numbers and stalk damage, respectively.