Effect of humic acids and the amount of mineral fertilizer on some characteristics of saline soil, growth and yield of broccoli plant under salt stress conditions
Laen...
Kuupäev
2022
Kättesaadavus
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian Academic Agricultural Society
Abstrakt
A pots experiment was undertaken to determine the
combined effect of humic acids and mineral fertilizer on some
characteristics of saline soil, growth, and yield components of broccoli.
The experiment was conducted in a randomized complete block design
with three replications. The first factor consists of two levels of humic
acids, namely without humic acid (H0 = 0.00 g L–1
) and humic acid
application (H1 = 0.35 g L–1
), while the second factor included nine
fertilizer (92 kg N ha
–1
, 200 kg P2O5 ha–1
, 150 kg K2O ha–1
) application
rates that were (100, 100, 100%), (120, 120, 120%), (120, 120, 100%),
(80, 120, 120%), (100, 100, 120%), (80.100, 100%), (120, 80, 80%), (100,
80, 80%), (80, 80, 80%) which added as a percentage of original fertilizer
recommendation taking the symbols of R1 to R9 respectively. The
treatment R1 was designated as a control treatment. The results indicated
that humic acid application (H1) and increasing the amount of applied
mineral fertilizer (R2) reduced the hydraulic conductivity of the soil for
different soil depths. Humic acid addition (H1) increased concentrations
of calcium and magnesium while reducing sodium concentration
compared to control (H0). Contrary to humic acid, increasing the supplied
mineral fertilizer led to a reduction in concentrations of calcium and
magnesium while increasing sodium concentration in the soil. The sodium
adsorption in soil particles in the ground was decreased due to humic acid
application while improving the mineral fertilizer. Humic acid (H1)
combined with increasing the amount of chemical fertilizer (R2) gave the
desirable results in decreasing the sulphate, chloride and bicarbonate in the
soil profile. The addition of humic acid (H1) and increasing mineral
fertilizer application (R2) led to a significant increase in plant height, leaf
area and head weight of broccoli per plant. Similarly, the interaction
between humic acids and chemical fertilizers (H1R2) led to a significant
increase in plant height, leaf area and head weight of broccoli per plant.
Kirjeldus
Saabunud / Received 09.04.2022 ; Aktsepteeritud / Accepted 19.06.2022 ; Avaldatud veebis / Published online 19.06.2022 ; Vastutav autor / Corresponding author: Duraid K. A. Al-Taey ; duraidaltaey@gmail.com (
Märksõnad
humic acids, saline irrigation water, broccoli, saline soil, articles