Intercropping with a spreading type of cowpea was studied as a technique for the control of Striga hermonthica on sorghum in northern Cameroon. Alternate rows of cowpea did not reduce Striga density but planting the cowpea and sorghum in the same row, in the same or alternating hills, reduced Striga density and numbers of Striga per sorghum stand. Yields of sorghum grain in the same-row planting treatments were not significantly less than sole sorghum yields, and 200 to 700 kg ha~' of cowpea grain was produced. Alternating stands of sorghum and cowpea within the same row gave the best yield of sorghum and greater reduction of Striga. Production of mature Striga with capsules decreased with increasing cowpea ground cover, so that while cowpea may not reduce Striga emergence, it may hinder Striga development, possibly reducing the Striga seed bank over time.Inhibition de Striga utilizando caupi RESUMEN En el norte de Camenin se estudio la siembra simultanea con un tipo de caupf que se disemina, como tecnica para el control de Striga hermonthica en el sorgo. Hileras alternadas de caupf no redujeron la densidad de Striga, pero la siembra de caupf y sorgo en la misma hilera, en la misma aporcadura o en aporcaduras alternadas, redujo la densidad de Striga y la cantidad de Striga por planta de sorgo. Los rendimientos de grano de sorgo en los tratamientos de siembra en la misma hilera no fueron significativamente inferiores a los obtenidos con sorgo solo, y se produjo entre 200 y 700 kg ha~' de grano de caupf. La siembra de plantas alternadas de sorgo y caupf en la misma hilera produjo mejor rendimiento de sorgo y mayor rotation de Striga. La production de Striga madura con capsulas disminuyo con la mayor diseminacion del caupf sobre el suelo. Por lo tanto, si bien el caupf puede no reducir la emergencia de Striga, sf puede impedir su desarrollo, posiblemente reduciendo el branco de semillas de Striga con el transcurso del tiempo.

PurposeThis paper seeks to emphasise the use of e‐resources by teachers and research scholars in the National Dairy Research Institute (NDRI) and the National Bureau of Animal Genetic Resources (NBAGR). The paper aims at particularly identifying the needs of the users as well as the problems faced by them while using e‐resources and also their level of satisfaction in getting the essential information on electronic means.Design/methodology/approachA survey was conducted through a questionnaire circulated among 140 teachers and research scholars of NDRI and NBAGR. The response rate was an encouraging 90.71 per cent.FindingsThe majority of the respondents are well aware of the various e‐resources in their respective field and confidently use them regularly. E‐Journals are the most preferred e‐resource among the respondents. They seek the help of e‐resources to perform their routine exercises, i.e. teaching, research, entertainment and communication. Some major problems faced by the respondents are slow speed of internet, difficulty in retrieving contents and poorly designed web sites.Research limitations/implicationsThe study is restricted to the teachers and research scholars of NDRI and NBAGR and elaborates on the fact that those e‐resources are being used up to the optimum limit. The study will assist the existing organizations in the field to understand the requirement of electronic resources and stimulate the path to revision of the same.Originality/valueThis is the first study on this topic in India, which has been carried out to discover the importance of e‐resources in the National Dairy Research Institute (NDRI) and the National Bureau of Animal Genetic Resources (NBAGR). It will support the approach and importance of such e‐resources and their usage for intellectual investigation in the agriculture community.

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Bachchan  Gad is  a spring-fed  tributary  of River Alaknanda  in  the Garhwal  region  of Uttarakhand. Benthic macroinvertebrates  in the riffles  of Bachchan Gad was  investigated  during  March 2008  to February  2009  at  four  sampling   sites  between  590  m  tol600  m above  sea  level.   Pre I  iminary observations revealed  that riffle inhabiting  benthic macroinvertebrates communities in  the Bachchan Gad comprised  of 36 insect genera belonging to  8  orders and 29 families along with  I    genus each of crustacean  and annelida.  Dominated by Ephemeropteran,  Trichopteran and Co/eopteran  genera the density was highest (1300±142  Individual  m?) during winter at confluence,  the downstream site, it was recorded  lowest  (80± 15.2  Individual  m)  during  monsoon  at Pata,  the headwater  site.