2of the Department of Entomology.
Punjab Agricultural University, Ludhiana
1Paper presented at the All India Nematology Symposium, New Delhi, held during August 21–22, 1969. Contribution No. 5/73 of the Dept. of Entomology.
Three doses of DBCP (Nemagon) (37, 74 and 148 kg/ha) applied to the soil in the basin in irrigation water for the control of the citrus nematode (Tylenchulus senri-penelrans Cobb, 1913) on 18-year-old sweet-orange trees in sandy-loam soil resulted in complete decimation of the larvae within one month and of the adult females within 5 months. The population of this nematode did not build up during the following 16 months. The treatments also resulted in 100 to 200 per cent increase in fruit yield.
