Keywords : Humic Acid


M. A. Jumah; W. A. Al-Joboory

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2022, Volume 20, Issue 1, Pages 138-148
DOI: 10.32649/ajas.2022.175653

A field experiment was conducted in Anbar governorate, northwest city of Ramadi in Zankora district during the autumn season of 2019. Seven fertilizer treatments were included (T1 = recommended application of chemical fertilizer, T2 = 50% of recommended + effective micro -organisms, T3= 25% of the recommendation + effective micro-organisms, T4= 50% the recommended + Humic acid, T5= 25% recommended + Humic acid, T6= combination of 50% recommended + micro-organisms+ Humic acid, and finally T7= 25% of recommended + micro-organisms + Humic acid). The experiment was applied using randomized complete block design (R.C.B.D). obtained results presented the possibility of using micro-organism fertilizers and Humic acid as an alternative of chemical ones when the amount of chemical fertilizer was reduced by 50%, where, T6 treatment almost gave the same values of growth indicators and production in compression with fully amount applied as mineral fertilizer (T1). Treatment of T6 was significantly superior to all treatments except T1, by showing values of 264.87 cm, 5746 cm2, 373.9 g. plant-1, 84.92 g, 10.55 Mg ha-1 of plant height, leaf area, dry weight, 300 grain weight and total grain weight respectively.


K. Y. Al-kubissi; Y. K. Al-Hadethi*

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2019, Volume 17, Issue 2, Pages 189-205
DOI: 10.32649/aagrs.2022.170551

A field study was carried out during the spring season of 2018 in the fields of the Faculty of Agriculture- University of Anbar to evaluate the effects study of the interaction between humic acid and potash fertilizer in raising the resistance of peppers to salinity. The factorial experiment with three replicates was carried out with three factors. The first factor of irrigation water salinity at four levels was (2, 4, 6 and 8) ds m-1. and the second factor was the humic acid levels (0, 25 and 50) kg ha-1 and the third factor is the Potassium fertilizer at the levels of 0, 75 and 150 kg k2o ha1. And carried out by following the design of the complete random sectors and three replicates were transferred seedlings to the field according to the experimental factors after development in the dishes of cork and after germination were watering fresh water for 20 days. After five leaves, all seedlings were irrigated with saline water. 2 ds m-1 for 15 days after it was irrigated with saline water 2, 4, 6 and 8 ds m-1. for 15 days and then transferred to the field according to the experimental parameters. The most significant results obtained from the experiment can be summed up above the treatment of air conditioning at saline level 6 ds m-1 in plant height with 80.63 cm and The most significant results obtained from the experiment can be summed up above the treatment of air conditioning at saline level 2 ds m-1 in yield per plant 7.10 kg.plant-1. The results showed an decrease in plant height and yield per plant by increasing the salinity of irrigation water by 8 ds m-1 for dry weight and the increase in the addition of humic acid and potassium fertilizer. The results showed an increase in nitrogen concentration and potassium and decrease of phosphorus by increasing the salinity and increase of irrigation water and increase (N. P. K) when adding HA and K.


M. N. AL-Falahi; A. A. Al-Hadethi; A. S. Al-Ha

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2018, Volume 16, Issue 2, Pages 1087-1100
DOI: 10.32649/aagrs.2022.170566

A column experiment was conducted to study the effect of added humic acid in a mixture of different salinity water in kinetics of salts release and sodium adsorption ratio in calcareous soil with a texture clay loam. The soil was taken from the surface layer (0-30 cm), dried with an antenna and passed through a 2 mm diameter sieve. It was filled with steel polyethylene columns with a diameter of 7.5 cm, height 30 cm and a density of 1.37 Mgm m-3. Place a filter under the column 5 cm high of sand and glass wool. All columns were dampened by the poetic properties to maintain homogeneity of moisture content in the entire column. The number of columns used to study the movement and distribution of salts is 4×3= 12 columns. A fixed column of water was placed above the surface of the soil column of different salinity water (0.72, 3.00, 5.00 and 7.00 dSm-1) in accordance with humic acid levels of 0.00, 0.25 and 0.50 g L-1. The washing process continued until the electrical conductivity of the added water was equal to the electrical conductivity of the running water from the columns. The electrical conductivity and sodium adsorption ratio in the candidate water was determined and the results were subjected to kinetic equations for the study of salts release over time. Results showed that the best equation for describing the relationship between the liberated salts (g l -1) and the free SAR and the time (day) is the diffusion equation and the mathematical model Ct= C0-Kt1/2 for the diffusion equation is the most appropriate in describing the relationship. It is noticed that the rate of release speed (K) increases with the increase in the level of added humic acid and any level of salt water used in the experiment and the amount of salts released and the proportion of adsorption of sodium increases over time and increase the levels of addition of the humic acid


H. J Hammadi; M. A Salama; T. H. Hamasalih

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2018, Volume 16, Issue 2, Pages 52-61
DOI: 10.32649/aagrs.2022.170520

Field experiment was conducted in the agricultural fields in Zouayt Sityih / Ramadi / Anbar province, in 2016 - 2017 and 2017- 2018, according to split-plot design by using (R.C.B.D) with three replicates to study the effect of Humic acid on the growth, yield and quality of several genotypes from faba bean, the main plots included three different humic acid concentrations (0, 1.5 and 3) cm3 L-1 while subplots included four genotypes (American, Dutch, Local and Spanish) in both seasons respectively. The results were as follows: The genotype V2 showed the highest plant height of (75.39, 77.32) cm for both seasons respectively. While the genotype V1 gave highest rate of the number of branches plant 9.59 and 10.74 brancheplant-1, the number of pods in the plant reached 12.90 for the first season. The seed yield was 6.15,7.76 ton.h-1. The concentrations of the humic acid were significant in most studied traits. H3 gave the highest seed yield 6.27, 6.95 ton.h-1 in both seasons, while H0 gave the lowest mean 3.12 , 6.27 ton h-1 in both seasons. The interaction between genotypes and concentrations of humic acid was significant in most characters in the 2017-2018 season.


ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2018, Volume 16, Issue 1, Pages 850-859
DOI: 10.32649/aagrs.2018.153333

A field experiment was carried out during winter season of 2015-2016 in fields of Agronomy department-College Agriculture/ Anbar University (Abu-Gharaib) that located within Longitude 44° East and Latitude 33°North in order to study the effects of four concentrations of Humic acid 0, 1, 2 and 3 cm3 L-1 in growth and yield traits for three cultivars of barely (IPA265, Bohoth244 and IPA99). A randomized complete block design (RCBD) was used according to the arrangement of split plot with three replicates, where the concentrations of Humic acid occupied the main plots while the cultivars occupied the sub plot. The results of the study were summarized as following:
The cultivars were significantly differ in most of growth and yield traits, IPA265, gave the highest average of number of tillers per area unit (m2), flag leaf area, weight of 1000 seed, grain yield 6.05 ton ha-1, while IPA99 gave highest of plant height, number of spikes per area 491.10 spike m-1. Humic acid concentration significantly affected in most of studied traits, the concentration 1 cm3 L-1 gaue highest average of 1000 seed weight and the concentration 2 cm3 L-1 gave highest average of number of seed per spik 46.49, while 3 cm3 L-1 achieved highest average of number of tilleras and grain yield 6.59 ton ha-1. The interaction between Cultivars and Humic acid concentration significantly affected all studied traits except plant height and weight of 1000 seed, However, IPA265 cv. With 2 cm3 L-1 Humic acid gave highest average of flag leaf area 20.38 cm2 and with 1 cm3 L-1 gave highest average of number of seed per spike 50.60 grain, as well as gave with 3 cm3 L-1 highest average of grain yield 7.74 ton ha-1.

Effect of added processed poultry manure and spraying humic acid in growth and yield of two cultivars lettuce

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2017, Volume 15, Issue 1, Pages 202-213
DOI: 10.32649/aagrs.2017.129085

Afield study was carried out during fall season 2016, in vegetable field in Horticulture Department Horticulture, Agriculture College-University of Baghdad (Abu Ghraib). In order to study the effect of the application poultry manure and humic acid in growth and yield of two cultivars of lettuce (Lactuca sativa L.). The study included two factors: the first factor is the cultivars, Local and Foreign cultivar (Polaris), and second factor which included 12 treatments. That is Control treatment fertilizing by recommended chemical fertilizer, 10 g plant-1 poultry manure, 20 g plant-1 poultry manure, 40 g plant-1 poultry manure, 1.5 ml L-1 humic acid, 3 ml L-1 humic acid, 10 g plant-1 poultry manure + 1.5 ml L-1 humic acid, 20 g plant-1 poultry manure + 1.5 ml L-1 humic acid, 40 g plant-1 poultry manure + 1.5 ml l-1 humic acid, 10 g plant-1 poultry manure + 3 ml L-1 humic acid, 20 g plant-1 poultry manure +3 ml L-1 humic acid and 40 g plant-1 poultry manure +3 ml L-1 humic acid. The experiment factorial (2×12) and three blokes the treatments were randomly distributed according to (R.C.B.D) and means according to L.S.D (P>0.05) and the important results were summarized as following:
The application at poultry manure and humic acid led to superior produced cultivar over local cultivar for all studied traits, treatment T12 by giving highest average of leaf area, number of leaves, leaf content of chlorophyll, leaf content of nitrate, percentage of head folding, mean of total head weight and total yield recorded 1202 cm2, 51.278 leaf plant-1, 58.57spad, 88.58%, 1.771 kg and 118.61 ton h-1 respectively, Concludes this is manures characterize given results positive in vegetative growth and contain leaves from nutrient elements and yield mount.

Effect of foliar application by organic matter extract and humic acid in vegetative proprieties of strawberry (Fragarra ananassa. Duch. )

Hussain Nory Rasheed AL- Karawi; Walleed A. AL-Rawi

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2015, Volume 13, Issue 2, Pages 294-306

A study was carried out in a plastic house for a palm date research unit/agriculture college/university of Baghdad (Abu Ghraib). During the season 2013-2014, to study the effect of spraying extract organic material and applying Humic acid and there interaction in the strawberry vegetative growth. The study include 12 treatments, to spray strawberry's plant with four levels from the extractions of organic matter (Distilled water, one volume of extracted organic matter to one volume of Distilled water 1:1, one volume of extracted organic matter to two volume of Distilled water 1:2 and one volume of extracted organic matter to three volume of Distilled water 1:3 just or with applied of three concentration of Humifert-ultra 0, 2.5, 5 ml.l-1 to the soil. A factorial experiment carried out at randomized completed blocked design (RCBD) with three replicates, Averages were tested with LSD at 5% level of probability.
The important result were found when the plants significantly at 2:1 level's was reached 3.85cm comparing with 2.478cm of plant's control. While the treatment 1:1 give the longest of runner's length were reach 130.875cm comparing with 77.394cm of plant's control, while the treatment 3:1 record highest numbers of crowns, runners and one leave distance were reached 3.792crown.plant-1,6.645runner.plant-1 and 76.423cm2 sequentially comparing with control's treatment that reach 2.737crown.plant-1,2.448 runner.plant-1 and 53.359cm2 sequentially. The additions of Humic acid were increased the plant's height and crowns number's significantly reaches 3.465cm, 3.783crown.plant-1 sequentially at 5ml.l-1 level. While the control was reached 3.199 cm and 2.496 crown. plant-1 sequentially.
While the plants were treated with 2.5ml.l-1 superior on other treatments gives greater crown diameter reach 43.937 mm while control treatment was 32.503mm. there were significantly effect to the two factors of the studies traits, the treatment H2.T1 give higher average of plant height's reach 4.510 cm, the treatment H0.T2 longest runner reach 143.124 cm and the crown diameter reach 62.551mm at H1.T0 treatment's superior significantly comparing with control treatment's that give 22.131mm, the H2.T0 treatment gives highest number of crowns reaches 5.125 crown.plant-1 comparing with control treatment's that gives 1.000 crown. plant-1, the study's results show's that H0.T3 treatment was superior significantly in runners number which gives greater number of runners reach 7.823 runner. plant-1 comparing with control treatment's that gives 1.000 runner. plant-1. While the leaves area were superior at the treatment H1.T3 significantly which gives 104.623cm2 comparing with control treatment's that gives 50.210cm2 .

Effect of foliar Humic acid application and Mulching of soil on character of Growth and Yield of strawberry Fragaria ananassa D.

Rasmy M.H. Aldulaimy; Osama K.I. Alsinbol

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2012, Volume 10, Issue 1, Pages 82-96

The experiment was conducted in Alamria-Fallujah at Anbar proviance during spring season of 2010-2011 to study the effect of foliar application with humic acid and soil mulching and their interaction on some features of vegetative and rooting growth and yield of strawberry Rubygem &Fern variety. The foliar application of humic acid with 0, 1,2and4 ml/L where tow minds mulching with straw , black plastic in addition to control treatment without mulching were used. Factorial experiment with Randomized Complete Block Design RCBD in three replicates .The best result in total leaves area/plant, the percent of fruit set and total yield and root content of dry matter were obtained in Fern which get (1879.9cm2,, 62.83%, 166.08gm and 41.87gm)respectively. Mulching soil also had a significant effect on plant growth and yield and the treatment mulching straw the best result in mention characters which get (1592.3cm2, 40.92gm, 68.48%, 168.04gm) respectively. Foliar application with humic acid had a significant effect on average total leaves area/plant, root content of dry matter, the percent of fruit set and yield/plant which get (1968.2cm2, 44.42gm, 67.09%, 189.19gm) respectively. The interaction between mulching and foliar application had a significant effect in both varieties all mention of features.