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Cereal Cyst Nematode and N Fertilization 1
Author(s) -
Juhl M.
Publication year - 1975
Publication title -
eppo bulletin
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.327
H-Index - 36
eISSN - 1365-2338
pISSN - 0250-8052
DOI - 10.1111/j.1365-2338.1975.tb02494.x
Subject(s) - hatching , human fertilization , nematode , nitrogen , zoology , nitrate , cyst , calcium nitrate , fertility , biology , calcium , chemistry , agronomy , ecology , medicine , surgery , population , environmental health , organic chemistry
The effect of increasing amounts of nitrogen on the propagation of the cereal cyst nematode was studied. Nitrogen applications as nitro‐chalk ranged 0–1,500 kg/ha (0–232.5 kg N/ha). Maximum propagation was obtained at about 46.5 kg N/ha. Increasing N doses reduced propagation to about 1/2 ‐ 1/3 of the maximum. Two factors seem to be involved: 1) reduced fertility of females with increasing N application and 2) apparently fewer females developed with N applications greater than 46.5 kg/ha. Hatching in solution of calcium nitrate decreased with increasing concentration.