Indian Journal of Nematology
Year : 1981, Volume : 11, Issue : 1
First page : ( 99) Last page : ( 99)
Print ISSN : 0303-6960.

Effect of various land development practices and cropping sequences on nematode populations of undisturbed land

Lal Arjun, Sanwal K.C., Mathur V. K.

National Bureau of Plant Genetic Resources, New Delhi-12.

Presented at Nematology Symposium held at Coimbatore, India in February, 1981

Abstract

Effect of various land development practices (burning of vegetative cover, ploughing plus levelling, green manuring and summer fallowing) and cropping sequences recommended for the region (mono-cropping, mixed cropping and crop rotation) on population dynamics of plant parasitic and soil nematodes was studied on a land which had remained without any cultivation since long time. All land development practices were found to decrease the numbers of most of the nematode species encountered. The ploughing plus levelling followed by summer fallowing and green manuring with Crotalaria juncea almost completely eliminated the nematodes. Amongst various cropping sequences, specific crop rotations were found most effective in keeping nematode populations below the damaging levels while monocropping with six successive crops of tomato highly favoured the population increase of Meloidogyne incognita, making the land unsuitable for growing a susceptible crop in the next season.

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