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Agro Ecosystem Structure
The Ecology of Indian Agriculture
The Analysis of Energetics in Real Systems
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acre adult agricultural systems agro-ecosystems animal average basic biological biomass bullocks cal/mg calculated caloric content caloric equivalents caloric value calories camp cattle population census cent chemical fertilizer coefficient compartments components consumed consumption cost defined Delhi density dry weight dung ecology economic ecosystem analysis efficiency egested energy budget energy flow energy inputs environmental estimated exuvia farm farmyard manure feed females fodder fossil fuel gobar gas grain grassland green revolution gross energetic heat of combustion hectare human increased India Indian agriculture individual input-output instars intake irrigated kcal kcal per kg kcal/year kernels kilocalorie kilogram Klekowski labor machinery males measured metabolism milk mongongo nitrogen nutrients nutritive nuts oryzae output photosynthesis plants population density primary production protein pupae relation requirements Research rice Science seeds sericulture Singur solar energy solar powered species subsistence effort trophic level United vegetable wheat yield