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Book
Year: 1990 Publisher: Peradeniya : Faculty of Agriculture, University of Peradeniya,
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Nitrogen fixation --- Nitrogen fixation --- soil fertility --- soil fertility --- Rhizobium --- Rhizobium --- Inoculation --- Inoculation --- Azospirillum --- Azospirillum --- Peradeniya --- Peradeniya
Book
Year: 1990 Publisher: Casablanca : World Phosphate Institute,
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Inorganic fertilizers --- Phosphate fertilizers --- surveys --- Consumption --- soil fertility --- Western Europe
Book
Year: 1990 Publisher: Casablanca : Institut Mondial du Phosphate,
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Inorganic fertilizers --- Inorganic fertilizers --- Phosphate fertilizers --- Phosphate fertilizers --- surveys --- surveys --- Consumption --- Consumption --- soil fertility --- soil fertility --- Western Europe --- Western Europe
Book
Year: 1990 Publisher: Paris : Unesco,
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Soil --- Soil --- Savannas --- Savannas --- soil fertility --- soil fertility --- Urbanization --- Urbanization --- Pollution --- Pollution --- Trachypogon --- Trachypogon --- Orenoque --- Terrain karstique --- Orenoque --- Terrain karstique
Book
Year: 1990 Publisher: Butare : Kigali : Arboretum de Ruhande ; ISAR,
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agroforestry --- agroforestry --- Arboreta --- Arboreta --- forest trees --- forest trees --- forests --- forests --- Crops --- Crops --- Tropical zones --- Tropical zones --- soil fertility --- soil fertility --- Food crops --- Food crops --- Isar --- Rwanda --- Rwanda --- Isar
Book
Year: 1990 Publisher: Fontainebleau : AFOCEL-ARMEF,
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soil fertility --- soil fertility --- water balance --- water balance --- plant nutrition --- plant nutrition --- forest ecology --- forest ecology --- Environmental impact --- Environmental impact --- Forestation --- Forestation --- Afocel --- Armef --- Afocel --- Armef
ISBN: 9712200027 Year: 1990 Publisher: Manila : International Rice Research Institute,
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Sustainable agriculture --- Sustainable agriculture --- Phosphorus --- Phosphorus --- soil fertility --- soil fertility --- nutritional requirements --- nutritional requirements --- Rice --- Rice --- Erosion. --- Erosion --- soil chemistry --- soil chemistry --- Tropical soils --- Tropical soils --- Intensive farming --- Intensive farming --- Crops --- Crops --- Irri --- Manila --- Asia --- Asia --- Oceania --- Oceania --- Irri --- Manila
Book
Year: 1990 Publisher: Worblaufen-Bern : International Potash Institute,
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Potash fertilizers --- Potash fertilizers --- soil fertility --- soil fertility --- Application methods --- Application methods --- Metabolism --- Metabolism --- plant nutrition --- plant nutrition --- Simulation models --- Simulation models --- application rates --- application rates --- Soil --- Soil --- Ipi --- USSR --- USSR --- Europe --- Europe --- Ipi
Dissertation
Year: 1990 Publisher: Gent : Rijksuniversiteit, Faculteit van de Landbouwwetenschappen,
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Potatoes --- nitrogen fertilizers --- Plant response --- Yield factors --- Plant physiology --- Nitrogen metabolism --- Solanum tuberosum --- Soil --- Nitrogen --- soil fertility
Map
Year: 1990 Publisher: Gembloux : Centre de Cartographie des Sols de la Belgique Méridionale. FSAGx,
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Soil --- Soil water balance --- Soil profiles --- Soil classification --- Topography --- soil morphological features --- soil fertility --- land use --- Geomorphology --- Belgium --- Belgium
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