Abstract
The extent to which larvae of the root feeding insect, Sitona lepidus, affects the transfer of N from clover to associated wheat plants in soil systems is assessed in this paper. White clover ( Trifolium repens) plants were grown from seed in a nutrient solution containing 99.99 atom % 14NH 3 14NO 3 as the N-source. Individual clover plants were transferred to pots containing sieved field soil. A single wheat ( Triticum arvense) seed was planted with the clover plant and allowed to develop for 47 d. The pots were either infested with insect larvae or uninfested. The presence of the insect larvae in the pots significantly reduced clover dry matter and it was calculated that 7 % of the N in the wheat plants originated from clover.
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