Effects of some iron sources on yields of groundnut in calcareous soil, Lop Buri series
2010
Komniya Sintupachee(Kasetsart University, Bangkok (Thailand). Faculty of Agriculture. Department of Soil Science) E-mail:[email protected] | Jongruk Chanchareonsook(Kasetsart University, Bangkok (Thailand). Faculty of Agriculture. Department of Soil Science) | Suthep Thongpae(Kasetsart University, Bangkok (Thailand). Faculty of Agriculture. Department of Soil Science)
This work studied the effects of FeDTPA and FeEDDHA on yield of groundnut grown on Lop Buri series, a calcareous soil, having pH 8.1 and low available Fe content. The experiment was performed in a greenhouse. The design of the experiment was a Completely Randomized Design (CRD) with 3 replications. The treatments consisted of the control (without iron (Fe) fertilizer) and the application of iron at the rate of 1.0 and 3.0 mg Fe/kg soil as FeDTPA and FeEDDHA. The results showed that the calcareous Lop Buri soil series was deficient in Fe. Application of FeDTPA and FeEDDHA significantly increased growth and yield of groundnut as compared to the Control. The effictiveness of FeEDDHA in increasing growth and yield of groundnut was higher than that of FeDTPA. Yield of groundnut grown on the soil amended with FeDTPA at the rate of 3 mg Fe/kg soil were similar to those of groundnut grown on the soil amended with FeEDDHA either at the rate of 1 mg Fe/kg soil or 3 mg Fe/kg soil. Application of FeEDDHA significantly increased total Fe uptake of groundnut as compared to that of Control. The effectiveness of FeEDDHA in increasing availability of Fe to groundnut was higher than that of FeDTPA.
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