Уточнить поиск
Результаты 1-10 из 2,470
Factors affecting the seed bank of Orobanche crenata in fields under lentil based cropping systems in Northern Syria
1991
Linke, K.H. | Schnell, H. (University of Hohenheim, Stuttgart (Germany). Institute of Plant Production in the Tropics and Subtropics) | Saxena, M.C. (International Center for Agricultural Research in the Dry Areas, Aleppo (Syria))
The parasitic plant Orobanche crenata is a major pest of lentil in the Mediterranean region where the crop is grown in rotation with cereal, summer crops and fallow. The severity of infestation depends on the seed bank of the parasite, which in itself is affected by the seed production of the parasite and the natural decline of seed in soil. Effects on the seed bank of such factors as sowing date of the crop, amount of rainfall, burning of residues and various rotations were studied. Production of viable seed m2 was 23.3 million in a wet season and 700 in a dry season. A delay in the sowing date of lentil by 6 weeks reduced seed production by a factor of 0.29. The mean reduction of the seed bank after growing various crop was 35.1, 9.7 and 36.8 (%) for two field and one pot experiment, respectively. Leguminous crops were most effective and keeping the land fallow least effective in reducing the seed bank
Показать больше [+] Меньше [-]Changing gender roles in Hungarian agriculture
1991
Repassy, H. (Department of Social Policy, Institute for Macro-planning and Modelling, Budapest University of Economics (Hungary))
What work is real? Changing roles of farm and ranch wives in south-eastern Ohio
1991
Fink, V.S. (Department of Sociology, University of Virginia, Charlottesville, Virginia (USA))
Subsistence agriculture versus cash cropping - the social repercussions
1991
Rennie, S.J.
Technology as a factor in gender differentiation of work roles: a case study of Israel's smallholder co-operative villages
1991
Nevo, N. (Women's Studies, Department of Sociology, University of Haifa (Israel))
Women, work and the evolution of agriculture
1991
Shaver, F.M. (Department of Sociology and Anthropology, Concordia University, Montreal, Quebec (Canada))
Role of women in rural development
1991
Kaur, M. | Sharma, M.L. (Centre for Women's Studies, Punjab University, Chandigarh (India))
Agricultural production systems in Botswana
1991
Phillips, M.C. (Sebele Agricultural Research Station, Gaborone (Botswana))
Sulphur research and agricultural production in India
1991
Tandon, H. L. S. (Hari Lal Singh)
