The effect of seed inoculation and of a nitrogen fertilizer on the survival of red clover plants growing in soil previously treated with sodium chlorate

Haines, W.E.

The effect of seed inoculation and of a nitrogen fertilizer on the survival of red clover plants growing in soil previously treated with sodium chlorate

1933

Haines, W.E.

The percentage of clover plants surviving from treatments on the chlorate-treated soil where both inoculation and ammonium sulfate were used was still significantly lower than the percentage survival of plants growing in the untreated check soil. Inoculation of the clover seed, the application of ammonium sulfate, and a combination of the two increased the survival of clover plants on the chlorate-treated soil. Inoculation increased the survival of clover plants on the untreated soil. Ammonium sulfate gave the least increase in percentage survival of the clover plants growing in the chlorate-treated soil, but the increase was quite significant. Inoculation of the seed was next, with the combined treatment giving the largest increase. In the case of plants growing in the chlorate-treated soil, there was a correlation of .65 +/- .04 between the percentage of plants surviving from a treatment and the average nodules per plant on the plants which survived from that treatment. No data were available for similar tests under field conditions. The writer believes that such field tests would be desirable as these experiments indicated that it may be possible by such means to grow crops on small areas which have received applications of chlorate much sooner than could be done otherwise. It would be desirable to test different amounts and types of nitrogen fertilizers, using several common field crops.

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