Evidence for the involvement of the root lesion nematode Pratylenchus thornei in wheat yield decline in northern New South Wales
1987
Doyle, A.D. | Southwell, R.J. (New South Wales Dept. of Agriculture, Tamworth (Australia). Agricultural Research Centre) | McLeod, R.W. | Wong, P.T. | Hetherington, S.E. (New South Wales Dept. of Agriculture, Rydalmere (Australia). Biological and Chemical Research Inst.)
Plant nutrition was apparently not a major factor in the decline, as shown by experimental application of nutrients. Fumigation of the soil with methyl bromide increased yield. The yield increase associated with aldicarb treatment showed good correlation with tolerance to Pratylenchus thornei. Ethylene dibromide had no consistent effect on the yield of wheat or numbers of P. thornei, while terbufos gave a small reduction in P. thornei and a small increase in yield. The data indicate that P. thornei is at least partially responsible for the wheat yield decline.
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