Plant and Soil

, Volume 52, Issue 4, pp 537–545 | Cite as

Micronutrient availability to cereals from calcareous soils

VII. Mechanism of higher wheat production by tillage methods
  • M. S. Chaudhry
  • S. M. Sherif
  • F. M. Chaudhry
  • A. H. Abed


The mechanism of higher grain production of wheat (Triticum aestivum L.) by four tillage methods was explored on a sandy calcareous soil of Sahl-Al Jafara, Libya, during the year 1976–77. Tillage methods increased grain yield and dry matter weight at the boot stage in the order of no-tillage<rotovator=disc plough < subsoiler. Rotovation to 15 cm and disc ploughing to 25 cm depth enhanced grain production mainly by eliminating weed competition. In both the cases, roots penetrated < 25 cm where plough-pan existed.

Further yield increases by 50 cm deep subsoiling seems to be mainly explained by N and Cu rise in plants from their marginal to optimum levels and by reduction of Mn deficiency in plant shoots. Penetration of roots beyond the 25 cm plough-pan apparently resulted in higher absorption of these nutrients from leached or native soil supplies. Subsoiling also resulted in greater Zn concentration in plant shoots which, under marginal to deficient conditions, will also increase grain production.

Key Words

Copper Disc-plough Laminated layer Manganese Nitrogen Nutrient absorption Plough-pan Rotavator Subsoiler Weed Zinc 


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Copyright information

© Martinus Nijhoff 1979

Authors and Affiliations

  • M. S. Chaudhry
    • 1
  • S. M. Sherif
    • 1
  • F. M. Chaudhry
    • 1
  • A. H. Abed
    • 2
  1. 1.Department of Agricultural EngineeringAlfateh UniversityTripoliLibya
  2. 2.Department of Agricultural Studies and ResearchArab Development InstituteTripoliLibya

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