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Journal : Proceeding Biology Education Conference

INFILTRASI DAN LIMPASAN PERMUKAAN PADA POLA TANAM AGROFORESTRI DAN MONOKULTUR : STUDI DI DESA JERU KABUPATEN MALANG Agung Sri Darmayanti; Solikin Solikin
Proceeding Biology Education Conference: Biology, Science, Enviromental, and Learning Vol 10, No 3 (2013): Seminar Nasional X Pendidikan Biologi
Publisher : Universitas Sebelas Maret

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Abstract

The  research  aims to determine  rate of water  infiltration and   soil run off  on agroforestry,  parennial  and annual  monoculture  cropping systems was conducted at  Jeru village Malang Refency. The water  infiltration rate was measured  by infiltrometer  and the soil  run off  was measured  simple ranfall simulator to make run off  on the soil.  The run off water and  soil  flowing  was   sheltered  into  a  glass   and   then weighing the dry mass of the soil.  Parameters observed  were plant species, trees architectures model, the amount of litter in the land. The results   showed  that  the  highest  water  infiltration rate  and  the lowest  soil run off  was  on multiculture agroforestry each 63,5 cm.h-1 and 0,3 g.lt-1  whereas  the  lowest  water infiltration  and  the highest  soil run off  was on  perennial  trees monoculture  cropping  system  each 30  h-1 and  2,9 g.lt-1 . The multiculture agroforestry  was  dominated by ‘waru  gunung’ (Hibiscus macrophyllus), ‘mindi’ (Melia azedarach), ‘mahoni’ (Sweitenia macrophylla), bamboes and cassava (Manihot esculenta)  that have different  tree architecture  models.  The diversity of  the tree species also  caused   varying litters  produced.  Key Word : infiltration, run off, architecture, litter
PERTUMBUHAN VEGETATIF DAN GENERATIF Stachytarpeta jamaicensis(L.) Vahl Solikin Solikin
Proceeding Biology Education Conference: Biology, Science, Enviromental, and Learning Vol 10, No 1 (2013): Seminar Nasional X Pendidikan Biologi
Publisher : Universitas Sebelas Maret

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Abstract

Stachytarpeta jamaicensis  belongs to  family   Verbenaceae believed to cure malaria, scabies, headaches,stimulant, tonic, expectorant and fever. The research aims to determine  vegetative and generative growth of Stachytarpeta jamaicensis was conducted in Purwodadi Botanic Garden  in October 2012  -  June 2013 by observing 9 plants  grouped in 3 replications. Seedlings with 6-12 leaves were  planted in polybags  with diameter 13 cm,  height 16 cm   filled  with soil media ‘katel’ (soil stream  sediment).  The plants placed outside the glass house with  light penetration  about 20%. Growth observations conducted every week to high, leaf  number, shoot/branch number,  spike number, spike  length, early flowering and fruit maturity of the plants.  The results showed that  the plant height,  the leaf number, the shoot  and branch and  the spik s number  of the plants was  increasing linearly  up to the age of 90 days after planting (DAP). Early and late flowering varied  each   20-40 DAP  and 69-83 DAP.  The length of spikes  growth following the sigmoid curve and the   fruits mature  at   the age of 38 days after  fertilization.  Keywords: Growth, Stachytarpeta Jamaicensis, Vegetative, Generative