scholarly journals Pemanfaatan bio-char sebagai pembawa mikroba untuk pemantap agregat tanah Ultisol dari Taman Bogo-Lampung The use of bio-char as bacterial carrier for aggregate stabilization in Ultisol Soil from Taman Bogo-Lampung

2016 ◽  
Vol 78 (2) ◽  
Author(s):  
Laksmita Prima SANTI ◽  
Didiek Hadjar GOENADI
Keyword(s):  
Growth Performance ◽  
Water Content ◽  
Vegetative Growth ◽  
Microbial Population ◽  
Aggregate Stability ◽  
Life Time ◽  
Standard Dosage ◽  
Available Water Content ◽  
Carrier Materials ◽  
Time Periods

Abstract A series of research was carried out with the objective to meet the challenge and determine the direction and strategy required for overcoming highly weathered Ultisol soil that impact to low productivity. Selected ameliorating materials, i.e. bio-char, compost, and peat were examined their physical characteristics to determine the best combination of them as bioameliorant carrier materials for aggregate stability bacteria.  Bio-char was found to be the most suitable carrier material as it has highest total pore spaces and available water content.  Microbial population obtained from the granular forms of bioameliorant was 107 CFU/gram of the sample until 12 months life time periods. Best vegetative growth performance of maize Bisma var. in Ultisol soil of Experiment Station (KP) Taman Bogo was shown by the application of 100% standard dosage of NPK conventional fertilizers in combination with the addition of 4.2 g/plant of bioameliorant. Yield of dry grain of maize was higher (+15.7 %) by application of 100 % standard dosage and  2.1g bioameliorant/plant (112 kg/ha) than that obtained by standard dosage of conventional fertilizer.  Abstrak Satu rangkaian kegiatan penelitian telah dilakukan untuk menjawab tantangan, arah dan strategi dari berbagai aspek yang terkait erat dengan masalah pelapukan lanjut dan berdampak pada rendahnya produktivitas tanah Ultisol.  Beberapa bahan terpilih seperti arang pirolisis (bio-char), kompos, dan gambut dianalisis secara fisik untuk menetapkan kombinasi terbaik sebagai bahan pembawa bioamelioran dengan bahan aktif bakteri pemantap agregat.  Bio-char memiliki keunggulan dalam hal total ruang pori dan  kapasitas air tersedia yang lebih tinggi.  Sampai dengan 12 bulan masa simpan, populasi bakteri pada bioamelioran granul dengan bahan pembawa bio-char berjumlah 107 CFU/gram contoh. Pertumbuhan terbaik tanaman jagung varietas Bisma pada tanah Ultisol diperoleh dari perlakuan 100 % pupuk NPK tunggal yang dikombinasikan dengan   4,2 g bioamelioran/tanaman. Sementara itu, perlakuan 100 % dosis pupuk NPK tunggal yang dikombinasikan dengan 2,1 g bioamelioran/tanaman (112 kg/ha) menghasilkan bobot pipilan kering jagung yang lebih tinggi (+15,7 %) apabila dibandingkan dengan perlakuan 100% dosis pupuk NPK tunggal saja. 

scholarly journals Pemanfaatan bio-char sebagai pembawa mikroba untuk pemantap agregat tanah Ultisol dari Taman Bogo-Lampung The use of bio-char as bacterial carrier for aggregate stabilization in Ultisol Soil from Taman Bogo-Lampung

2016 ◽  
Vol 78 (2) ◽  
Author(s):  
Laksmita Prima SANTI ◽  
Didiek Hadjar GOENADI
Keyword(s):  
Growth Performance ◽  
Water Content ◽  
Vegetative Growth ◽  
Microbial Population ◽  
Aggregate Stability ◽  
Life Time ◽  
Standard Dosage ◽  
Available Water Content ◽  
Carrier Materials ◽  
Time Periods

Abstract A series of research was carried out with the objective to meet the challenge and determine the direction and strategy required for overcoming highly weathered Ultisol soil that impact to low productivity. Selected ameliorating materials, i.e. bio-char, compost, and peat were examined their physical characteristics to determine the best combination of them as bioameliorant carrier materials for aggregate stability bacteria.  Bio-char was found to be the most suitable carrier material as it has highest total pore spaces and available water content.  Microbial population obtained from the granular forms of bioameliorant was 107 CFU/gram of the sample until 12 months life time periods. Best vegetative growth performance of maize Bisma var. in Ultisol soil of Experiment Station (KP) Taman Bogo was shown by the application of 100% standard dosage of NPK conventional fertilizers in combination with the addition of 4.2 g/plant of bioameliorant. Yield of dry grain of maize was higher (+15.7 %) by application of 100 % standard dosage and  2.1g bioameliorant/plant (112 kg/ha) than that obtained by standard dosage of conventional fertilizer.  Abstrak Satu rangkaian kegiatan penelitian telah dilakukan untuk menjawab tantangan, arah dan strategi dari berbagai aspek yang terkait erat dengan masalah pelapukan lanjut dan berdampak pada rendahnya produktivitas tanah Ultisol.  Beberapa bahan terpilih seperti arang pirolisis (bio-char), kompos, dan gambut dianalisis secara fisik untuk menetapkan kombinasi terbaik sebagai bahan pembawa bioamelioran dengan bahan aktif bakteri pemantap agregat.  Bio-char memiliki keunggulan dalam hal total ruang pori dan  kapasitas air tersedia yang lebih tinggi.  Sampai dengan 12 bulan masa simpan, populasi bakteri pada bioamelioran granul dengan bahan pembawa bio-char berjumlah 107 CFU/gram contoh. Pertumbuhan terbaik tanaman jagung varietas Bisma pada tanah Ultisol diperoleh dari perlakuan 100 % pupuk NPK tunggal yang dikombinasikan dengan   4,2 g bioamelioran/tanaman. Sementara itu, perlakuan 100 % dosis pupuk NPK tunggal yang dikombinasikan dengan 2,1 g bioamelioran/tanaman (112 kg/ha) menghasilkan bobot pipilan kering jagung yang lebih tinggi (+15,7 %) apabila dibandingkan dengan perlakuan 100% dosis pupuk NPK tunggal saja. 

scholarly journals Growth Performance of ‘Granny Smith’ and ‘Fuji’ Cultivars Grafted onto Dwarf Rootstocks: a Preliminary Study in Eastern Anatolia

2011 ◽  
Vol 39 (1) ◽  
pp. 246 ◽  
Author(s):  
Halil İbrahim OĞUZ ◽  
Teyar M. TAŞ ◽  
Ferhat MURADOĞLU
Keyword(s):  
Growth Performance ◽  
Vegetative Growth ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
First Year ◽  
A Value ◽  
Important Quality ◽  
Fuji Apple ◽  
Vegetative Characters ◽  
Dwarf Rootstocks

This study was carried out to determine the growth performance of ‘Granny Smith’ and ‘Fuji’ apple varieties, which are widley grown in Turkey, grafted to dwarf rootstocks within their initial two years under continental ecological conditions of the Van Region in East Anatolia. In the first year, the vegetative characters of the cultivars were measured, whereas the yield and the growth rate were both determined in the second year. The yields of ‘Granny Smith’ and ‘Fuji’ varieties were 2.38 and 3.88 kg, with average fruit weights of 173.71 g and 136.76 g, respectively. The concentrations of soluble solids, an important quality attribute, were 11.2% and 12.9% for ‘Granny Smith’ and ‘Fuji’, respectively. Titratable acidity, which indicates the maturity of the fruit and specifies the market suitability, was found to be 0.37% in ‘Granny Smith’ and 0.52% in ‘Fuji’. Although some properties differed between these cultivars, the firmness of both cultivars was the same, with a value of 6.6 libre. Although both varieties have a double sigmoid vegetative growth, ‘Granny Smith’’s vegetative growth was relatively better than that of ‘Fuji’, whereas ‘Fuji’ had a higher productivity. However, for precise evaluation of yields, the period of economical production is required. Preliminary results of morphological, phenological, and pomological tests showed that the varieties ‘Granny Smith’ and ‘Fuji’ grafted onto dwarf rootstocks have a potential for increased production in the Van region of Eastern Turkey.

scholarly journals Factors determining the soil available water during the last two decades (1997–2019) in southern Spain

2021 ◽  
Vol 14 (19) ◽  
Author(s):  
José A. Sillero-Medina ◽  
Jesús Rodrigo-Comino ◽  
José D. Ruiz-Sinoga
Keyword(s):  
Climate Change ◽  
Water Content ◽  
Southern Spain ◽  
Retention Capacity ◽  
Essential Information ◽  
Hydrological Conditions ◽  
Available Water ◽  
Available Water Content ◽  
The Mediterranean ◽  
The Impact

AbstractAssessing soil hydrological conditions can provide essential information for understanding the environmental processes that affect ecosystem services and, particularly in the context of ongoing climate change. This is key in areas affected by water scarcity such as the Mediterranean belt. Therefore, the main goals of this research are (i) to assess the main rainfall dynamics and trends of some representative hotspots along with southern Spain and (ii) to determine the impact on the soil available water content (AWC) over the last two decades. An analysis of daily precipitation and soil hydrological conditions was combined with soil sampling (543) and laboratory analyses to evaluate the properties related to the soil infiltration and retention capacity. The results show that the organic factors control soil properties and their hydrodynamics in southern Spain. Furthermore, a general declining trend in soil water availability is observed over the last two decades. This is more extreme in arid and semi-arid areas, where there have been several years in the last decade with more than 200 days without the available water content. Moreover, in these areas, heavy rainfall during specific moments of the year is the key factor that manifests a greater incidence in areas with steeper slopes, which in turn, also conditions the biological factors and the hydrodynamics of the soil. In short, in the context of climate change, the analysis of soil hydrological dynamics could be used to identify biodiversity thresholds in the Mediterranean area and even to detect phenological changes in specific plant species.

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