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Asian Journal of Agricultural Research
  Year: 2007 | Volume: 1 | Issue: 2 | Page No.: 59-66
DOI: 10.3923/ajar.2007.59.66
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Nutrient Uptake and Efficiency of Rice under Different Soil Conditions

L. Gurusamy, K. Omar Hattab, P.S. Vijayakumar, S. Suganya and V.B. Muthukumar

A field experiment was conducted in loamy sand soils of Pandit Jawaharlal Nehru College of Agriculture and Research Institute, Karaikal, Union Territory of Pondicherry, India to find out the rice performance under two different soil conditions by raising sesame in previous season and without it, during the year 2004-05 in two consecutive seasons in a Factorial Randomized Block Design (FRBD). The field was divided into 60 plots and in the summer season sesame was raised in 30 plots and the other 30 plots were kept fallow. In the next season (Kharif), rice was raised in all the 60 plots of two different situations viz., with sesame as previous crop (Situation I) and without sesame as pervious crop (Situation II) with two rice cultivars viz., ADT 38 and KR 99001 and five levels of nitrogen viz., 0, 50, 100, 150 and 200 kg N ha-1. The uptake of Nitrogen (N), phosphorus (P) and potassium (K) by sesame was 30.4, 10.2 and 26.3 kg ha-1, respectively, resulted in soil available N, P and K loss of 37.0, 19.8 and 29.0 kg ha-1, respectively. The N and K uptake was equal under both situations at Active Tillering (AT) and Panicle Initiation (PI) but P was accumulated more in situation II in the stage AT but comparable at PI. This might be due to initial low requirement of nutrients met by inorganic sources and later situation I managed the nutrient lost in previous season with mineralization process, whereas the P, though applied as basal, might not be fully available in the initial stages itself and might have been fixed. The nutrient uptake by straw was higher in situation II owing to higher dry matter production and grain uptake was comparable because grain nutrient content is genetic character, not much influenced by management practices. The efficiency parameters (agronomic efficiency, physiological efficiency, harvest index and apparent N recovery) were found to be higher in situation I over situation II and they were more pronounced at lower levels of N.
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How to cite this article:

L. Gurusamy, K. Omar Hattab, P.S. Vijayakumar, S. Suganya and V.B. Muthukumar, 2007. Nutrient Uptake and Efficiency of Rice under Different Soil Conditions. Asian Journal of Agricultural Research, 1: 59-66.

DOI: 10.3923/ajar.2007.59.66






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