The ameliorant was characterized for their physical and chemical properties.
Pujiyanto Pujiyanto 2007, 'Use of Coffee Pulp and Minerals for Natural Soil Ameliorant', Coffee and Cocoa Research Journalhttp://www.ccrjournal.com/index.php/ccrj/article/view/89. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Application of the ameliorant increased efficiency of the fertilizer.
Pujiyanto Pujiyanto 2007, 'Use of Coffee Pulp and Minerals for Natural Soil Ameliorant', Coffee and Cocoa Research Journalhttp://www.ccrjournal.com/index.php/ccrj/article/view/89. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The results showed that types of ameliorant gave different effect to soil properties.
Sulakhudin Mastur, Denah Suswati, Muhammad Hatta 2017, 'The effect of ameliorants on improvement of soil fertility in post gold mining landat West Kalimantan', Journal of Degraded and Mining Lands Managementhttp://jdmlm.ub.ac.id/index.php/jdmlm/article/view/303. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
There was no interaction between surface water depth, ameliorant and variety.
Hesti Pujiwati, Munif Ghulamahdi, Sudirman Yahya, Sandra Arifin Aziz, Oteng Haridjaja 2015, 'THE APPLICATION OF PEATY MINERAL SOIL WATER IN IMPROVING THE ADAPTABILITY OF BLACKSOYBEAN TOWARD ALUMINIUM STRESS ON TIDAL MINERAL SOIL WITH SATURATED WATER CULTURE',AGRIVITA Journal of Agricultural Sciencehttp://agrivita.ub.ac.id/index.php/agrivita/article/view/567. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Application of ameliorant derived from coffee pulp increased significantly growth of coffee and cocoa seedling.
Pujiyanto Pujiyanto 2007, 'Use of Coffee Pulp and Minerals for Natural Soil Ameliorant', Coffee and Cocoa Research Journalhttp://www.ccrjournal.com/index.php/ccrj/article/view/89. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
There was positive interaction effect between the ameliorant and the fertilizers.
Pujiyanto Pujiyanto 2007, 'Use of Coffee Pulp and Minerals for Natural Soil Ameliorant', Coffee and Cocoa Research Journalhttp://www.ccrjournal.com/index.php/ccrj/article/view/89. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Both the ameliorant and the fertilizers affected the seedling growth synergistically.
Pujiyanto Pujiyanto 2007, 'Use of Coffee Pulp and Minerals for Natural Soil Ameliorant', Coffee and Cocoa Research Journalhttp://www.ccrjournal.com/index.php/ccrj/article/view/89. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Coastal sediment as an ameliorant in peatlands increased productivity some crops.
Denah Suswati, Tino Orciny Candra, Yarlina Yacoub 2016, 'ROLE OF COASTAL SEDIMENT ON SOIL NUTRIENT AVAILABILITY AND OIL PALM YIELD AT PEATLANDS',Sains Tanah: Journal of Soil Science and Agroclimatologyhttp://jurnal.fp.uns.ac.id/index.php/tanah/article/view/485. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
When available in situ, ameliorant materials can be economically used as they are required in large amounts.
Adhe Phoppy Wira Etika, Rahmat Hasan 2015, 'Effect of Mineral and Humic Substances on Tailing Soil Properties and Nutrient Uptakeby Pennisetum purpureum Schumach', Jurnal Tanah Tropikahttp://journal.unila.ac.id/index.php/tropicalsoil/article/viewFile/968/pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)