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All Journal Indonesian Journal of Geography Agrotrop : Journal on Agriculture Science AGRITROP International Journal of Biosciences and Biotechnology Buletin Udayana Mengabdi E-Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Planta Tropika SAINS TANAH - Journal of Soil Science and Agroclimatology Agroteknika Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi Nandur Jurnal Pengabdian Masyarakat dan Riset Pendidikan Pinisi Journal of Entrepreneurship Review
Tati Budi Kusmiyarti
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Journal : planta tropika

 1 
Kajian Sebaran Humus, Alofan dan Senyawa Humus Kompleks Pada Tanah Andisol Kusmiyarti, Tati B.; Mega, M.; Dibia, N.; Widyarshana, D.O.
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 1, No 2 (2005)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v1i2.3119

Abstract

Humic substances (humus), allophanes and humus complexes are the soil component which have highly reactivity and give great contribution   on genesis and lead to presence  of specific chemical and physical properties of Andisols.  The study on humus, allophanes and humus complexes was conducted on Andisols in Tawangmangu Karanganyar District of Central Java and Bedugul, Tabanan District of Bali to observe the distribution of humus,  allophanes and humus complexes along the profile and the factor affected  its distribution. The result  showed  that the content of humus  complexes tend to decrease with the dept in accordance to the content of humus, on the contrary of the content of allophanes.  So the humus complexes are abundance on the upper layer whereas the allophanes on the lower layers of the profiles. By means of the regression calculation indicated  that both of the pH (H2O) of the soil and the content of humus are controlled the formation of humus complexes and I or allophanes along the profiles.
Kajian Sebaran Humus, Alofan dan Senyawa Humus Kompleks Pada Tanah Andisol Tati B. Kusmiyarti; M. Mega; N. Dibia; D.O. Widyarshana
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 1, No 2 (2005)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v1i2.3119

Abstract

Humic substances (humus), allophanes and humus complexes are the soil component which have highly reactivity and give great contribution   on genesis and lead to presence  of specific chemical and physical properties of Andisols.  The study on humus, allophanes and humus complexes was conducted on Andisols in Tawangmangu Karanganyar District of Central Java and Bedugul, Tabanan District of Bali to observe the distribution of humus,  allophanes and humus complexes along the profile and the factor affected  its distribution. The result  showed  that the content of humus  complexes tend to decrease with the dept in accordance to the content of humus, on the contrary of the content of allophanes.  So the humus complexes are abundance on the upper layer whereas the allophanes on the lower layers of the profiles. By means of the regression calculation indicated  that both of the pH (H2O) of the soil and the content of humus are controlled the formation of humus complexes and I or allophanes along the profiles.
Magnesium Fertilizer Increased Growth, Rhizome Yield, and Essential Oil Content of Ginger (Zingiber officinale) in Organic Field Sardiana, I Ketut; Kusmiyarti, Tati Budi; Roni, Ni Gusti Ketut
PLANTA TROPIKA Vol 10, No 2 (2022)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v10i2.11406

Abstract

Ginger (Zingiber officinale) is the main biopharmaceutical export commodity of Indonesia. However, its productivity and quality are low because it is not cultivated using optimal techniques. This study aimed to examine the effect of magnesium (Mg) fertilizer on the growth, rhizome yield, and essential oil content of two ginger varieties in the organic field. The two factors tested were the rate of Mg fertilizer application (0, 50, 100, and 150 kg MgOha-1) and the variety of ginger (elephant ginger [Zingiber officinale var. officinarum] and red ginger [Zingiber officinale var. rubrum]). The variables measured were plant height, number of leaves, number of tillers, rhizome weight, and essential oil content. Mg fertilizer application rate and ginger variety significantly affected growth, yield, and essential oil content. No interaction effects were found between the two factors. Mg fertilizer applied at 150 kg MgOha-1 resulted in the highest rhizome yield and essential oil content, with an increase of 21.74% and 15.38%, respectively, compared to the control (0 kg MgOha-1). The yield of elephant ginger was 29.41% higher than that of red ginger, whereas the essential oil content of the red ginger was 16.67% higher than that of the elephant ginger.
Magnesium Fertilizer Increased Growth, Rhizome Yield, and Essential Oil Content of Ginger (Zingiber officinale) in Organic Field Sardiana, I Ketut; Kusmiyarti, Tati Budi; Roni, Ni Gusti Ketut
PLANTA TROPIKA Vol. 10 No. 2 (2022)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v10i2.11406

Abstract

Ginger (Zingiber officinale) is the main biopharmaceutical export commodity of Indonesia. However, its productivity and quality are low because it is not cultivated using optimal techniques. This study aimed to examine the effect of magnesium (Mg) fertilizer on the growth, rhizome yield, and essential oil content of two ginger varieties in the organic field. The two factors tested were the rate of Mg fertilizer application (0, 50, 100, and 150 kg MgOha-1) and the variety of ginger (elephant ginger [Zingiber officinale var. officinarum] and red ginger [Zingiber officinale var. rubrum]). The variables measured were plant height, number of leaves, number of tillers, rhizome weight, and essential oil content. Mg fertilizer application rate and ginger variety significantly affected growth, yield, and essential oil content. No interaction effects were found between the two factors. Mg fertilizer applied at 150 kg MgOha-1 resulted in the highest rhizome yield and essential oil content, with an increase of 21.74% and 15.38%, respectively, compared to the control (0 kg MgOha-1). The yield of elephant ginger was 29.41% higher than that of red ginger, whereas the essential oil content of the red ginger was 16.67% higher than that of the elephant ginger.
Co-Authors A.A. INTANG PUJA LESTARIANI A.A. NYOMAN SUPADMA Adam Sipta Danendra Budi Rahayu Tanama Putri D.O. Widyarshana HIMAWAN BAYU AJI I DEWA AYU SRI PURNAMI PINATIH I GUSTI PUTU RATNA ADI I Ketut Sardiana I Made Adhika I Made Mega I Nyoman Sujana I Wayan Diara I.A. L. Dewi I.M. Adhika I.N. Sujana IDA BAGUS PUTU BHAYUNAGIRI INDAYATI LANYA Jananuraga, Petrus Raki KADEK ARI DEWI WAHYUNI KEMAL SAMUDRA Ketut Dharma Susila LUH GEDE PINA ADI PRASTUTI Luh Putu Wrasiati M. Mega M.Tri Gunasih MADE KRISNANDA ADI SAPUTRA Maulana, Alief Yahya Mega, M. N. Dibia N. Dibia N. M. Wikarniti N.K. Karyati N.W. Siti Ni Gusti Ketut Roni Ni Gusti Ketut Roni NI LUH MADE PRADNYAWATHI Ni Luh Ramaswati Purnawan Ni Made Witariadi NI PUTU SRI SUTARI Nike Triwahyuningsih Noviastuti, Nina NURLELY LAMPITA PANDIANGAN P. P. K. Wiguna Putu Perdana Kusuma Wiguna R. Suyarto R. Suyarto R. Suyarto RADEGUNDA AGUSTA JINOTRI RISKA PUTRI RUKMANA Shafira, Amrina Yasmine Subadiyasa N. N. Sunyata, Agus SUTAN TANTOWI DERMAWAN T. Kusmawati TATIEK KUSMAWATI Widyarshana, D.O. YAYAN VANDANI