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Sefria Dewidna
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Agriculture, Biological Sciences & Forestry Education

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KEPADATAN POPULASI WALANG SANGIT (Leptocorisa acuta Thunb) (Hemiptera;Alydidae) PADA TANAMAN PADI DI KENAGARIAN KOTO NAN TIGO KECAMATAN BATANG KAPAS KABUPATEN PESISIR SELATAN Dewidna, Sefria; Jasmi, Jasmi; Indriati, Gustina
Pendidikan Biologi Vol 2, No 2 (2013): Jurnal Mahasiswa Pendidikan Biologi Genap 2013-2014
Publisher : STKIP PGRI Sumbar

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Abstract

ABSTRACTOne of insect pests that attack the rice plant is Leptocorisa acuta Thunb ( ladybugs stink ) . Local people know Leptocorisa as pianggang acuta Thunb . This pest attacks the rice in a productive phase by sucking fluids rice fruit . These pests can cause grain to be empty will result in a decrease in yield . In connection with that have done research on population density Leptocorisa  acuta Thunb on rice plants from 25 until May 26, 2013 . Sampling was done at Koto Nan Tigo Kenagarian district Batang Kapas South Coastal District with a descriptive surve y method and the direct collection of the Leptocorisa acuta Thunb that existed at the study site by way sweepan ( sweeping ) . Collection by using systematic random sampling  technique  sampling  .  Decision  made  for 2  days  in a row 2  times  ( morning and afternoon ) on flowering phase and phase cook milk . Decision made at 15 points  in each  phase  . The results  were  obtained  an average  population density is 33.93 Leptocorisa acuta perpengambilan tail . In this case acuta Thunb Leptocorisa population had crossed the threshold .    
Co-Authors Gustina Indriati Jasmi Jasmi