Package of Practices in Important Horticultural crops of A.P.

Rhinoceros beetle oryctes rhinoceros beetles bore

Info icon This preview shows pages 247–250. Sign up to view the full content.

Rhinoceros beetle ( Oryctes rhinoceros ) Beetles bore into the soft tissues of the crown by cutting and chewing the tender unopened leaves and inflorescences. The affected leaf appear like a fan with geometrical cut. It breeds in manure pits and dead palm trunks. Control Release of baculovirus @ 10-15 inoculated beetles/ha at 3 months interval. Spraying of Metarhizium solution on manure heaps @ 1 lt of spray fluid for 3 mt 3 of heap. Establishment of rhinolure traps @ 1 trap/2ha. Mechanical hooking of the beetle from palm crown. Destruction of dead logs and boles of palms in the garden. Red palm weevil ( Rhychophorus ferrugineus ) Dark brown gummy liquid oozes from the site of infestation on the stem. From small holes on the stem chewed fiber pieces protrude. Due to continuous larval feeding, tunnels will be formed within the stem making it weak and ultimately palm dies. Control 247
Image of page 247

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Root feeding of monocrotophos 10 ml with 10 ml water/palm would be effective. Remove and destroy pest affected dead palms. Avoid injuries to the stem. Slug caterpillar ( Macroplectra nararia ) and Phalaera sp. Due to feeding of leaf lamina by larvae only midribs remain and leaf spots appear during the early stages of larval feeding. Leaves dry up and results in yield loss. Small pellets of faecal matter will be observed near the base of the trunk. Control Monitoring of the pests by keeping light traps from the second fortnight of January would help to forecast the pest. Mass trapping and destruction of moths by placing light traps would be an efficient method of pest management. Spraying of carbaryl 50% wp @ 3 gm/lt. of water in the young gardens will check the pest. Root feeding ofmonocrotophos 36% WSL @ 10 ml + 10 ml of water/palm by observing 45 days safety period will control the caterpillar stage of the pest. Cutting and burning of severely infested and dried leaves will reduce the pest population to a greater extent. Collection and destruction/cleaning of pupal cases from the crown/leaf axils would help in the reduction of pest population to a great extent. Checking the pest on non target intercrop also helps to keep the pest under check. Immediate application of recommended dose of fertilizers [1 kg Urea, 2 kg Single Super Phosphate and 2½ kg Muriate of Photos] and irrigation will boost the palms to recovery early. Eriophyhid mite ( Aceria guerreronis Keifer) Due to feeding of mite colonies, white streaks/triangular yellow and brown patches appear near the perianth region on nuts of 2 to 4 months age. These brown patches increase on the nut surface in the advanced stage causing longitudinal cracks. Button drop or reduced nut size and thereby decreased copra yield are associated. Control 248
Image of page 248
Collection and destruction of mite infested dropped nuts. Root feeding with Azadiractin 10000 ppm @ 10 ml + 10 ml of water/spraying of Azadiractin 10000 ppm 5 ml/lt of water. Application of neem cake @ 5 kg/palm/year along with other organic manures including green manuring. Application of recommended dose of fertilizers (1 kg U, 2 kg SSP, 2.5 kg MOP/palm/year)
Image of page 249

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 250
This is the end of the preview. Sign up to access the rest of the document.
  • Summer '16
  • JANE JOGGER
  • Monsoon, Andhra Pradesh

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern