Main Article Content
Abstract
Soil fertility decline as a result of the use of inorganic fertilizers. Tithonia diversifolia is an green manure and EM4 is a mixture of beneficial microorganisms. Application of Tithonia and EM4 on sweet corn is an effort to replace the use of inorganic fertilizers. This study aims to obtain the interaction in application of Tithonia and EM4, to compare at different doses of green manure Tithonia, and to compare on the application of multiple doses of different EM4. Completely Randomized Block Design is used which consist of two factors. The first factor is the dose of Tithonia consisting of: 0 tons ha-1, 10 tons ha-1, 20 tons ha-1 and 30 ton ha-1. The second factor is the dose EM4 comprising: 0 ml L-1, 10 ml L-1 and 20 ml L-1 of water. The results showed that Tithonia diversifolia and EM4 have no effect on the growth and yield of sweet corn. Tithonia diversifolia of 30 tons ha-1 provide the highest plant height and the highest number of leaves and and the largest stem diameter and the highest level of leaf greenish. There is a tendency on the ascending EM4 dosage, will increase the average plant height, leaf number, stem diameter and leaf greenish level.
Keywords:Tithonia, EM4, sweet corn.
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Copyright (c) 2018 Widodo Widodo, Anastasia M.L. Sinambela, Bilman W Simanihuruk

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References
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- Ardaniah. 2016. Growth and yield of sweet corn (Zea mays Saccharata Sturt.) At various doses and timing of cow manure. Magrobis Journal. 16 (1): 33-46.
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- Efendi, A. 1997. Influence of compost and Effective microorganisms dose-4 (EM4) on the growth and yield of kidney bean (Phaseolus vulgaris L.). Essay. Faculty of Agriculture. Brawijaya University.
- Fa H. M. F., A., Syamsudin, SNH Utami and B. Radjagukguk. 2009. The role of phosphorus fertilization in the growth of maize (Zea mays L.) in soil regosol latosol. J. News Biology. 9 (6): 745-750.
- Ginting, KE, RR Lahay and C. Hanum.2013. Response of growth and production of onion (Allium ascalonicum L.) against fertilizer npk and Tithonia diversifolia (Hemsl.) Gray. Online Journal Agroecotechnology. (1) 3: ISSN No. 2337- 659.
- Hakim, N., MY Nyakpa, AM Lubis, S.G. Nugroho, MA diha, GB Hong and HH Bailey. 1986. The basics of soil science. University of Lampung. Lampung.
- Hutomo, I. P, Mahfouz, and S. Laude. 2015. Effect of green manure Tithonia diversifolia on the Growth and Yield of Maize (Zea Mays L.). EJ Journal. Agrotekbis 3 (4): 475-481.
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- Nugroho, YES, Y. Sugito, L. Agustina and Soemarmo. 2013. Study of increasing doses several green manure and its influence on the growth of lettuce plants (Lactuca sativa L.). Journal Exp. Life Sci. 3 (2) ISSN. E-ISSN 2087-2852. 2338-1655
- Nurmegawati, Yahumri and Afrizon. 2015. Fertilizer recommendation of corn crop and kedalai in Kaur regency, Bengkulu. J. Pros. Shem Nas mobi Biodiv Indon. 1 (4): 914-917.
- Nyakpa, YM, AA Lubis, MA Pulung, AG Amrah, A. Munawar, BH Go, and N. Hakim. 2003. Soil Fertility. University of Lampung. Lampung.
- Pratikno, H. 2001. Studies of various biomass utilization for increasing the availability of P flora and soil organic matter in calcareous soils in the watershed Brantas Upper South Malang. MS Thesis. Study Program Management of Soil and Water. Graduate program. Brawijaya University.
- Purnama, K. 1998. Effects of Effective concentrations of microorganisms-4 (EM4) and the type of source of organic material on the growth and yield of garlic (Allium sativum L.) lowland variebag lokal sanur. Essay. Faculty of Agriculture. Udayana University. Bali.
- Putri, H. A. 2011. The effect of several concentrations of complete liquid organic fertilizer (POCl) bio sugih on the growth and yield of sweet corn (Zea mays saccharata Sturt.). Essay. Faculty of Agriculture. Andalas University, Padang.
- Sigalingging, D. H. 2016. The time difference weed competition on the growth and yield of sweet corn (Zea mays saccharata Sturt) in organic farming. Essay. Faculty of Agriculture. University of Bengkulu.
- Simatupang, P. 2014. Oversightruh dose kompos p aItan (Tithonia diversifolia) on the growth and yield of cauliflower on the organic farming system. Essay. Faculty of Agriculture. University of Bengkulu.
- Sinaga, P., and Y. Meiriani Hasanah. 2014. Response of growth and production kailan (Brassica oleracea L.) at several doses of liquid organic fertilizer Tithonia diversifolia (Tithonia diversifolia (Hemsl.) Gray). Online Journal Agroecotechnology 2 (4): 1584-1588.
- Sutejo, M. M. 2005. Fertilizers and How to fertilization. Rineka Reserved. Jakarta.
- Yulia. 2016. Changes in soil quality and the growth of sweet corn are cultivated organically. Essay. Faculty of Agriculture. University of Bengkulu.
References
REFERENCES
Ardaniah. 2016. Growth and yield of sweet corn (Zea mays Saccharata Sturt.) At various doses and timing of cow manure. Magrobis Journal. 16 (1): 33-46.
Dahlianah, I. 2004. Green manure one based organic fertilizers and sustainable ecology. Chlorophyll. 9 (2): 54-56.
Damanik, B.M.M., Bachtiar, F. Sarifuddin and H. Hamida. 2011. Soil Fertility and Fertilization. USU Press, Medan. It 20-25.
Efendi, A. 1997. Influence of compost and Effective microorganisms dose-4 (EM4) on the growth and yield of kidney bean (Phaseolus vulgaris L.). Essay. Faculty of Agriculture. Brawijaya University.
Fa H. M. F., A., Syamsudin, SNH Utami and B. Radjagukguk. 2009. The role of phosphorus fertilization in the growth of maize (Zea mays L.) in soil regosol latosol. J. News Biology. 9 (6): 745-750.
Ginting, KE, RR Lahay and C. Hanum.2013. Response of growth and production of onion (Allium ascalonicum L.) against fertilizer npk and Tithonia diversifolia (Hemsl.) Gray. Online Journal Agroecotechnology. (1) 3: ISSN No. 2337- 659.
Hakim, N., MY Nyakpa, AM Lubis, S.G. Nugroho, MA diha, GB Hong and HH Bailey. 1986. The basics of soil science. University of Lampung. Lampung.
Hutomo, I. P, Mahfouz, and S. Laude. 2015. Effect of green manure Tithonia diversifolia on the Growth and Yield of Maize (Zea Mays L.). EJ Journal. Agrotekbis 3 (4): 475-481.
Lestari, S. A. D. 2016. Utilization of Tithonia diversifolia (Tithonia diversifolia diversifolia) sebagai pupuk organik on soybean plants. Plant Food Science and Technology journal. 11 (1)
Lingga. 2001. Instructions for Use Fertilizer. Sower Swadaya, Jakarta. It 86-88.
Martajaya, M., L. Agustina, and Syekhfani. 2010. Methods of organic cultivation of sweet corn plants in Tlogomas Malang. Journal of Development and Natural Lestari.1 (1): 1-8
Naldo, R. A. 2011. Physical properties ultisol sweet limes three years after the granting of some types of green manure. Essay. Faculty of Agriculture. Andalas University.
Nugroho, YES, Y. Sugito, L. Agustina and Soemarmo. 2013. Study of increasing doses several green manure and its influence on the growth of lettuce plants (Lactuca sativa L.). Journal Exp. Life Sci. 3 (2) ISSN. E-ISSN 2087-2852. 2338-1655
Nurmegawati, Yahumri and Afrizon. 2015. Fertilizer recommendation of corn crop and kedalai in Kaur regency, Bengkulu. J. Pros. Shem Nas mobi Biodiv Indon. 1 (4): 914-917.
Nyakpa, YM, AA Lubis, MA Pulung, AG Amrah, A. Munawar, BH Go, and N. Hakim. 2003. Soil Fertility. University of Lampung. Lampung.
Pratikno, H. 2001. Studies of various biomass utilization for increasing the availability of P flora and soil organic matter in calcareous soils in the watershed Brantas Upper South Malang. MS Thesis. Study Program Management of Soil and Water. Graduate program. Brawijaya University.
Purnama, K. 1998. Effects of Effective concentrations of microorganisms-4 (EM4) and the type of source of organic material on the growth and yield of garlic (Allium sativum L.) lowland variebag lokal sanur. Essay. Faculty of Agriculture. Udayana University. Bali.
Putri, H. A. 2011. The effect of several concentrations of complete liquid organic fertilizer (POCl) bio sugih on the growth and yield of sweet corn (Zea mays saccharata Sturt.). Essay. Faculty of Agriculture. Andalas University, Padang.
Sigalingging, D. H. 2016. The time difference weed competition on the growth and yield of sweet corn (Zea mays saccharata Sturt) in organic farming. Essay. Faculty of Agriculture. University of Bengkulu.
Simatupang, P. 2014. Oversightruh dose kompos p aItan (Tithonia diversifolia) on the growth and yield of cauliflower on the organic farming system. Essay. Faculty of Agriculture. University of Bengkulu.
Sinaga, P., and Y. Meiriani Hasanah. 2014. Response of growth and production kailan (Brassica oleracea L.) at several doses of liquid organic fertilizer Tithonia diversifolia (Tithonia diversifolia (Hemsl.) Gray). Online Journal Agroecotechnology 2 (4): 1584-1588.
Sutejo, M. M. 2005. Fertilizers and How to fertilization. Rineka Reserved. Jakarta.
Yulia. 2016. Changes in soil quality and the growth of sweet corn are cultivated organically. Essay. Faculty of Agriculture. University of Bengkulu.