Resultados de búsqueda - "1972"

  1. Sources of future growth in Indian irrigated agriculture por Svendsen, Mark

    Publicado 1990
    “…By 1900, British India^ had about 13.2 million ha of total irrigated area, including 7.5 million ha of public works (4.5 million ha from large-scale public works and 3.0 million ha from minor public works) and 5.7 million ha of private works (4.0 million ha from private wells and 1.7 million ha from other private works) (India, Ministry of Irrigation and Power 1972).…”
    Enlace del recurso
    Capítulo de libro
  2. Soil temperature, soil moisture and maize yield from mulched and unmulched tropical soils por Lal, R.

    Publicado 1974
    “…The increase in grain yield by mulching was 46, 52 and 22 per cent respectively, for 1970, 1971 and 1972. Mulched plants had higher growth rate and vigour and chlorotic symptoms of nutritional disorders were observed only for unmulched plants. …”
    Enlace del recurso
    Journal Article

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