| plant diseases in india and their control. | the concept of development is reviewed in terms of sustainability. food production in india driven by pressure from an increasing human population uses 90,000 t per year of technical-grade pesticide: 12% of this is fungicide and a good part is insecticide for the control of vectors of plant viruses. a change in the cropping pattern and irrigation have provided a summer 'green bridge' along tamil nadu/andhra pradesh border areas for the tungro virus that affects rice and its vector. epidemics occ ... | 1993 | 8149823 |
| effect of harvesting operations on fungal spore populations of air. | agricultural practices such as harvesting of crops cause the pathogens to disseminate in abundance and may cause diseases, like skin and respiratory allergies in an epidemic form. also the farm workers were likely to be exposed repeatedly to high doses of fungal spore allergens from crop harvesting operations. at srikakulam, located in north coastal andhra pradesh, india, the major crops grown include rice and sugarcane. as part of a major study on the airspora of srikakulam the effect of harves ... | 2002 | 12617320 |
| soil salinity and exchangeable cations in a wastewater irrigated area, india. | the salinity and cation composition of water and soil were documented in a large (98 km(2)) wastewater-irrigated area (wia) downstream of hyderabad, india. the wastewater, which flows in a river that passes through the city, had a high to very high salinity hazard (ec = 1.1-3.0 ds m(-1)) that increased with distance from the city. the ec of soil irrigated by wastewater sampled within 8 km of the city was 6.2 to 8.4 times the ec of soil irrigated by uncontaminated groundwater. between 57 to 100% ... | 2009 | 19329677 |