@article{fdi:010038254, title = {{I}nteractions between irrigated rice ({O}ryza sativa) growth, nitrogen amendments and infection by {H}irschmanniella oryzae ({N}ematoda, {T}ylenchida)}, author = {{P}oussin, {J}ean-{C}hristophe and {N}euts, {T}eddy and {M}ateille, {T}hierry}, editor = {}, language = {{ENG}}, abstract = {{N}itrogen amendments are often used to alleviate damage to rice plants caused by plant-parasitic nematodes. {T}he population development of the endoparasitic nematode {H}irschmanniella oryzae was followed on irrigated rice ({O}ryza sativa cv. indica {IR}-13240-108-2-2-3) cultivated in containers, each supplemented with one of three nitrogen amendments ({N}-0 = 0, {N}-1 = 80 and {N}-2 = 160 kg ha(-1)) applied in the form of urea. {T}he effects of nitrogen concentration on irrigated rice growth were determined with plants cultivated in soils either infested ({I}-1) or uninfested ({I}-0) with nematodes. {P}opulations of {H}. oryzae continued to increase in both soil and roots throughout the crop cycle. {N}itrogen was without effect on soil populations, but large root nematode population increases were observed with the {N}-1 nitrogen amendment. {I}nteractions were observed between nematodes and nitrogen on the rice yield components, depending on the level of nitrogen applied. {T}he average single grain weight was the main affected yield component; {N}-1 increased the weight of each grain, but this effect was largely reduced in the presence of {H}. oryzae. {E}ven though nitrogen amendments were able to counterbalance the negative effects of {H}. oryzae, nitrogen applied at the {N}-1 level was not considered a sustainable alternative because it increased nematode populations. {R}oot nematode populations with nitrogen applied at the {N}-2 level were similar to those observed with {N}o. {H}owever, at the {N}-2 level, nitrogen induced spikelet sterility and the plant physiological disturbances caused by excessive in-soil nitrogen would prevent multiplication of {H}. oryzae root populations. (c) 2004 {E}lsevier {B}.{V}. {A}ll rights reserved.}, keywords = {{RIZICULTURE} ; {RIZ} {IRRIGUE} ; {FERTILISATION} {DU} {SOL} ; {ENGRAIS} {AZOTE} ; {NEMATODE} {PHYTOPARASITE} ; {ETUDE} {EXPERIMENTALE} ; {PHYSIOLOGIE} {VEGETALE} ; {RENDEMENT} ; irrigated rice ; {H}irschmanniella oryzae ; nitrogen supply efficiency}, booktitle = {}, journal = {{A}pplied {S}oil {E}cology}, volume = {29}, numero = {1}, pages = {27--37}, ISSN = {0929-1393}, year = {2005}, DOI = {10.1016/j.apsoil.2004.10.001}, URL = {https://www.documentation.ird.fr/hor/fdi:010038254}, }