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Nutrient Assessment with Omission Pot Trials for Management of Rubber Growing Soil

Author

Listed:
  • Pramoth Timkhum
  • Somsak Maneepong
  • Montree Issarakrisila
  • Krissada Sangsing

Abstract

Rubber-growing soils in southern Thailand are usually deficient in both macro- and micronutrients. Omission pot trial is an excellent tool for nutrient assessment because it can indicate the most limiting nutrient and the order of limitation. Maize is generally used as a test plant, but the difference in nutrient response of maize and rubber is not clearly understood. An omission pot trial with 10 treatments (All, -N, -P, -K, -Mg, -S, -Zn, -Cu, -B, and -Lime) was conducted. The soil samples were limed with Ca(OH)2 to pH 6, except for that used for the -Lime treatment. Equivalent amounts of 400 kg ha-1 of N, 120 of P, 175 of K, 75 of Mg, 100 of S, 6 of Zn, 4 of Cu and 2 kg ha-1 of B, were added in the All treatment. Nutrient X was omitted in the -X treatment. Maize and rubber were grown as test plants. The plant growth indices were measured after 30 days for maize and after 9 months for rubber. The limiting nutrients of both plants were N, P, and Ca (lime). Rubber growth in the field, which received government-recommended and omission-based fertilization, were not different.

Suggested Citation

  • Pramoth Timkhum & Somsak Maneepong & Montree Issarakrisila & Krissada Sangsing, 2013. "Nutrient Assessment with Omission Pot Trials for Management of Rubber Growing Soil," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 5(10), pages 1-10, September.
    • Handle: RePEc:ibn:jasjnl:v:5:y:2013:i:10:p:10
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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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