Effect of different levels of humic acid on the growth and nutrient uptake of teak seedlings

1993 ◽  
Vol 16 (8) ◽  
pp. 1465-1483 ◽  
Author(s):  
J. A. Fagbenro ◽  
A. A. Agboola
Keyword(s):  
Humic Acid ◽  
Nutrient Uptake ◽  
Different Levels

scholarly journals Effect of Organic Amendments on Growth, Nutrient Uptake Pattern and Yield of ginger (Zingiber officinale Rosc.)

2020 ◽  
Vol 107 ◽  
pp. 1-4
Author(s):  
Chitra R ◽  
◽  
Vinothini L ◽  
Keyword(s):  
Humic Acid ◽  
Nutrient Uptake ◽  
Tamil Nadu ◽  
Growth Parameters ◽  
Phosphorus Uptake ◽  
Great Influence ◽  
Growth And Yield ◽  
High Yield ◽  
Organic Manures ◽  
Neem Cake

The high yield of ginger is function of adequate and timely supply of plant nutrients. Among the various agronomic technologies influencing the production of ginger, nutrition is found to exert a great influence on growth and yield of ginger. Imbalance, low or no fertilizer application is one of the most important factors in obtaining the poor yield. Hence, the trial was taken to study the effect of organic manures (FYM, neem cake, vermicompost, Azospirillum) and biostimulants (panchakavya, humic acid and PPFM) on growth, yield and nutrient uptake of ginger at Department of Spices and Plantation Crops, Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore. The growth parameters like plant height, number of leaves, number of tillers and leaf area were found to be higher in the plants fed with 50% N (FYM) +25% N (Neem cake) + 25% N (Vermicompost) + Azospirillum (5kg/ha) + Panchakavya (3%). The maximum green rhizome yield (23.55 t ha-1) was obtained with the application of 50% N (FYM) +25% N (Neem cake) + 25% N (Vermicompost) + Azospirillum (5kg/ ha) + Panchakavya (3%) per hectare. The highest uptake of nitrogen (119.06 kg ha-1) and potassium (197.56 kg ha-1) was found in the application of 50% N (FYM) +25% N (Neem cake) + 25% N (vermicompost) + Azospirillum (5kg/ ha) + panchakavya (3%) per hectare The maximum amount of Phosphorus uptake (14.35 kg ha-1) was recorded in the application of 50% N (FYM) +25% N (neem cake) + 25% N (vermicompost) + Azospirillum (5kg/ha) + humic acid (0.1%). In ginger cultivation, the application of organic manures and inorganic fertilizers commonly practiced to increase the yield and quality of rhizome. Considering the world demand for organic food, the improvement of soil health, productivity and the availability of local resources, cultivation under organic farming can be encouraged. Keywords: Bio-stimulants; Growth parameters; Ginger; Nutrient uptake; Organic manures; Yield

scholarly journals Impact of soil application with humic acid and foliar spray of milagro bio-stimulant on vegetative growth and mineral nutrient uptake of Nonpareil almond young trees under Nubaria conditions

2020 ◽  
Vol 44 (1) ◽  
Author(s):  
Mahmoud Sami Abourayya ◽  
Nabila Elbadawy Kaseem ◽  
Thanaa Shaban Mohamed Mahmoud ◽  
Amal Masoad Rakha ◽  
Ramadan Ahmed Eisa ◽  
...  
Keyword(s):  
Humic Acid ◽  
Nutrient Uptake ◽  
Vegetative Growth ◽  
Foliar Spray ◽  
Mineral Nutrient ◽  
Soil Application

Effect of biofertilizers and foliar application of organic acids on yield, nutrient uptake and soil microbial activity in soybean

2015 ◽  
Author(s):  
N. N. Lingaraju ◽  
C. S. Hunshal ◽  
S. R. Salakinkop
Keyword(s):  
Humic Acid ◽  
Organic Acids ◽  
Nutrient Uptake ◽  
Microbial Activity ◽  
Foliar Application ◽  
Foliar Spray ◽  
Soil Microbial Activity ◽  
Flower Initiation ◽  
Soil Microbial ◽  
And Control

A field experiment was undertaken during kharif 2012 to study effect of biofertilizers and foliar application of organic acids on yield, nutrient uptake and microbial activity of soybean at MARS, Dharwad under rainfed condition. The experiment was laid out in RCBD factorial having twenty treatment combinations and replicated thrice. The treatments comprised of four P-Solubilizers (PSB, VAM, PSB + VAM and Control) and five foliar spray of organic acids (Humic acid, Lecithin, Citric acid, Maleic acid and control). The results revealed that higher seed yield of soybean (35.96 q ha-1) was obtained with the treatment combination of dual inoculation of PSB+VAM with foliar spray of 0.1% humic acid at flower initiation and was higher to an extent 22.5 per cent compared to control (27.90 q ha-1). Similar trend was observed on microbial activity and nutrient uptake (N, P2O5 and K2O) of the soybean crop.

scholarly journals Isolation of Soil Bacteria Adapted To Degrade Humic Acid-Sorbed Phenanthrene

2005 ◽  
Vol 71 (7) ◽  
pp. 3797-3805 ◽  
Author(s):  
D. J. Vacca ◽  
W. F. Bleam ◽  
W. J. Hickey
Keyword(s):  
Humic Acid ◽  
Humic Acids ◽  
Contaminated Soils ◽  
Soil Bacteria ◽  
Polynuclear Aromatic Hydrocarbons ◽  
Aerobic Bacteria ◽  
Substrate Uptake ◽  
Bacterial Phylotypes ◽  
Selective Interaction ◽  
Different Levels

ABSTRACT The goal of these studies was to determine how sorption by humic acids affected the bioavailability of polynuclear aromatic hydrocarbons (PAHs) to PAH-degrading microbes. Micellar solutions of humic acid were used as sorbents, and phenanthrene was used as a model PAH. Enrichments from PAH-contaminated soils established with nonsorbed phenanthrene yielded a total of 25 different isolates representing a diversity of bacterial phylotypes. In contrast, only three strains of Burkholderia spp. and one strain each of Delftia sp. and Sphingomonas sp. were isolated from enrichments with humic acid-sorbed phenanthrene (HASP). Using [14C]phenanthrene as a radiotracer, we verified that only HASP isolates were capable of mineralizing HASP, a phenotype hence termed “competence.” Competence was an all-or-nothing phenotype: noncompetent strains showed no detectable phenanthrene mineralization in HASP cultures, but levels of phenanthrene mineralization effected by competent strains in HASP and NSP cultures were not significantly different. Levels and rates of phenanthrene mineralization exceeded those predicted to be supported solely by the metabolism of phenanthrene in the aqueous phase of HASP cultures. Thus, competent strains were able to directly access phenanthrene sorbed by the humic acids and did not rely on desorption for substrate uptake. To the best of our knowledge, this is the first report of (i) a selective interaction between aerobic bacteria and humic acid molecules and (ii) differential bioavailability to bacteria of PAHs sorbed to a natural biogeopolymer.

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