Plant-parasitic nematode densities in cereal and legume based cropping systems on vertisols

Singh, M and Sharma, S B and Anders, M M (1994) Plant-parasitic nematode densities in cereal and legume based cropping systems on vertisols. Afro-Asian Journal of Nematology, 4 (1). pp. 44-50. ISSN 0963-6420

PDF - Published Version Restricted to ICRISAT users only Download (1MB) | Request a copy

Abstract

Densities of plant-parasitic nematodes in traditional, low-input cropping systems were 3 times lower than in high input cropping systems in Andhra Pradesh, India, during 1991-93. Sorghum/pigeonpea (intercropped), soyabean/pigeonpea (intercropped) and green gram (Vigna radiata) were identified as systems very conducive to the build up of Heterodera cajani. Very high population densities (>3500 nematodes/100 cubic cm soil) of Rotylenchulus reniformis were recorded on sunflower. The densities of plant parasitic nematodes did not increase significantly in plots that were either fallowed or sown with pearl millet (Pennisetum glaucum) in the rainy season. A summer fallow period between Feb. to June reduced the soil densities of all plant parasitic nematodes by 42%;R. reniformis population was reduced by 80%. H. cajani, Tylenchorhynchus sp. and total plant parasitic nematode densities were significantly higher in plots treated with inorganic fertilizers than in plots treated with farmyard manure. R. reniformis densities were higher in irrigated than in rainfed fields., 17 ref., Densities of plant-parasitic nematodes in traditional, low-input cropping systems were 3 times lower than in high input cropping systems in Andhra Pradesh, India, during 1991-93. Sorghum/pigeonpea (intercropped), soyabean/pigeonpea (intercropped) and green gram (Vigna radiata) were identified as systems very conducive to the build up of Heterodera cajani. Very high population densities (>3500 nematodes/100 cubic cm soil) of Rotylenchulus reniformis were recorded on sunflower. The densities of plant parasitic nematodes did not increase significantly in plots that were either fallowed or sown with pearl millet (Pennisetum glaucum) in the rainy season. A summer fallow period between Feb. to June reduced the soil densities of all plant parasitic nematodes by 42%;R. reniformis population was reduced by 80%. H. cajani, Tylenchorhynchus sp. and total plant parasitic nematode densities were significantly higher in plots treated with inorganic fertilizers than in plots treated with farmyard manure. R. reniformis densities were higher in irrigated than in rainfed fields.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Others > Food Legumes
Depositing User:	Mr Charan Sai Ch
Date Deposited:	06 Dec 2011 11:51
Last Modified:	06 Dec 2011 11:51
URI:	http://oar.icrisat.org/id/eprint/3296
Official URL:
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Author

View Statistics

Actions (login required)

View Item