Dynamics of AB-DTPA-extractable Zn in high and low limed calcareous soils amended with biochar and farmyard and poultry manures

2020 ◽  
Vol 13 (3) ◽  
Author(s):  
Abida Saleem ◽  
Dost Muhammad ◽  
Mumtaz Khan ◽  
Qudrat Ullah Khan ◽  
Muhammad Rizwan ◽  
...  
Keyword(s):  
Calcareous Soils ◽  
Extractable Zn

scholarly journals Critical Limit of Zinc for Rice in Calcareous Soils

1970 ◽  
pp. 43-47
Author(s):  
MA Rahman ◽  
M Jahiruddin ◽  
MR Islam
Keyword(s):  
Calcareous Soil ◽  
Calcareous Soils ◽  
Good Method ◽  
Extraction Methods ◽  
Ganges River ◽  
Culture Experiment ◽  
Critical Limit ◽  
Zn Content ◽  
Zn Status ◽  
Extractable Zn

A pot culture experiment was conducted to determine the critical limit of Zn for rice grown in calcareous soils collected from the High Ganges River Floodplain (AEZ 11). The soils contained CaCO3 0.68-6.95%, pH 7.1-7.8, organic matter 1.32-2.49% and clay 9.0-33.0%. The available Zn content of soils was estimated by three extraction methods and the amount of extraction followed the order of 0.1M HCl > 0.005 M DTPA (pH 7.3) >1M NH4OAc (pH 7.0). The critical levels of DTPA, HCl and NH4OAc extractable Zn were found to be 0.83, 1.80 and 0.40 ppm, respectively for rice as determined by Cate and Nelson's graphical procedure. The DTPA extractable Zn showed a positive correlation with DM yield and plant Zn content. Thus, the DTPA extraction can be regarded as a good method for determining available Zn status in calcareous soils. Key words: Calcareous soil, critical limit, rice, zinc. DOI = 10.3329/jard.v5i1.1456 J Agric Rural Dev 5(1&2), 43-47, June 2007

EFFECT OF IRRIGATION AND GRASSING TO CHANGE SOME OF THE BIOLOGICAL PROPERTIES OF THE MINING OF BROWN CALCAREOUS SOILS

2019 ◽  
Vol 1 (1) ◽  
pp. 29-32
Author(s):  
Ruzimurod B. Boimurodov ◽  
Zebinisso Q. Bobokhonova
Keyword(s):  
Folic Acid ◽  
Humic Acid ◽  
Humic Acids ◽  
Rapid Growth ◽  
Growth And Development ◽  
Sharp Increase ◽  
Humus Content ◽  
Calcareous Soils ◽  
Biological Properties ◽  
Humus Accumulation

In this article is showing, that the irrigation mountain brown carbonate soils prone methods of irrigation and grassing comes the rapid growth and development of natural vegetation, which leads to intensive humus accumulation. Humus content in the upper layer is increased by 0.98% and a significantly smaller severely eroded. Increasing the amount of humus promotes accumulation mainly humic acids, that conducts to expansion of relations the content of humic acid: The content of folic acid. When grassing of soil traced sharp increase in the number associated with the related and R2 O3 humic acid.

Iron Deficiency Chlorosis and Seed Yield in Dry Edible Beans Grown on High-pH Calcareous Soils

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 444f-445
Author(s):  
J.W. Gonzales ◽  
D.P. Coyne ◽  
W.W. Stroup
Keyword(s):  
Iron Deficiency ◽  
Chlorophyll Content ◽  
Seed Yield ◽  
Calcareous Soils ◽  
Yield Reduction ◽  
Iron Deficiency Chlorosis ◽  
Breeding Lines ◽  
High Ph ◽  
The Third ◽  
Content Index

Iron deficiency chlorosis (FeDC) can cause significant seed yield reduction in dry beans (Phaseolus vulgaris L.) grown on high-pH calcareous soils. To determine the effects of FeDC on seed yield, and the effect of Fe-spray as a correction factor for FeDC, 22 breeding lines/cultivars were planted on high-pH (8.0), calcareous (3.2–3.5 calcium carbonate equivalent), and low-Fe (1.8–4.2 ppm DTPA) sandy clay loam Tripp soils at Mitchell and Scottsbluff in western Nebraska. A split-plot design was used with Fe treatments as main plots and breeding lines/cultivars as subplots. Three foliar sprays of Fe-EDDHA (2.4 kg·ha–1) were applied at V4, R5, and R7 dry bean growth stages, during 1996 and 1997. Leaf chlorosis was measured simultaneously by using a Minolta Chroma-meter (CIE L* a* b* color space system), a Minolta Chlorophyll-meter (chlorophyll content index), and by visual ratings (1 = normal green to 5 = severe chlorosis). In 1996 no significant Fe-spray × line interaction (P = 0.776) and Fe-spray effect (P = 0.884) on seed yield was observed. Breeding lines showed significant differences in seed yield (P = 0.0001) with WM2-96-5 being the highest-yielding line (4047 kg·ha–1). In 1997 a significant Fe spray × line interaction (P = 0.029) was observed. The cultivar Chase without Fe spray (3375 kg·ha–1), and lines WM2-96-5 (3281 kg·ha–1), WM2-96-8 (3171 kg·ha–1) with Fe spray were the highest yielding entries under those treatments. Differences in visual ratings after the third Fe spray in 1997 were significant (P = 0.004) for Fe spray × line interaction. In 1996 visual ratings were different only for breeding lines. Chlorophyll content index showed a significant Fe spray × line interaction after the second Fe spray (P = 0.022) and after the third Fe spray (P = 0.0003) in 1997.

Adaptation of Iron‐Efficient and ‐Inefficient Lovegrass Strains to Calcareous Soils 1

Crop Science ◽  
1982 ◽  
Vol 22 (3) ◽  
pp. 672-676 ◽  
Author(s):  
P. W. Voigt ◽  
C. L. Dewald ◽  
J. E. Matocha ◽  
C. D. Foy
Keyword(s):  
Calcareous Soils

Phosphorus Solubility in Sludge-amended Calcareous Soils

1986 ◽  
Vol 15 (3) ◽  
pp. 308-312 ◽  
Author(s):  
G. A. O'Connor ◽  
K. L. Knudtsen ◽  
G. A. Connell
Keyword(s):  
Calcareous Soils ◽  
Phosphorus Solubility

scholarly journals Remodeling of root morphology by CuO and ZnO nanoparticles: effects on drought tolerance for plants colonized by a beneficial pseudomonad

Botany ◽  
2018 ◽  
Vol 96 (3) ◽  
pp. 175-186 ◽  
Author(s):  
Kwang-Yeol Yang ◽  
Stephanie Doxey ◽  
Joan E. McLean ◽  
David Britt ◽  
Andre Watson ◽  
...  
Keyword(s):  
Calcareous Soils ◽  
Root Hairs ◽  
Triticum Aestivum L ◽  
Metal Stress ◽  
Root Tip ◽  
Zno Nps ◽  
Wheat Seedlings ◽  
Cuo Nps ◽  
Expression Of Genes ◽  
Induced Tolerance

Formulations that include nanoparticles of CuO and ZnO are being considered for agricultural applications as fertilizers because they act as sources of Cu or Zn. Currently, few studies of the effects of these nanoparticles (NPs) consider the three-way interactions of NPs with the plant plus its microbiome. At doses that produced root shortening by both nanoparticles (NPs), CuO NPs induced the proliferation of elongated root hairs close to the root tip, and ZnO NPs increased lateral root formation in wheat seedlings (Triticum aestivum L.). These responses occurred with roots colonized by a beneficial bacterium, Pseudomonas chlororaphis O6 (PcO6), originally isolated from roots of wheat grown under dryland farming in calcareous soils. The PcO6-induced tolerance to drought stress in wheat seedlings was not impaired by the NPs. Rather, growth of the PcO6-colonized plants with NPs resulted in systemic increases in the expression of genes associated with tolerance to water stress. Increased expression in the shoots of other genes related to metal stress was consistent with higher levels of Cu and Zn in PcO6-colonized shoots grown with the NPs. This work demonstrates that plants grown with CuO or ZnO NPs showed cross-protection from different challenges such as metal stress and drought.

Sign in / Sign up

Export Citation Format

Share Document