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THE PRODUCTIVITY OF TEMPERATE
Potential production from pasture
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Agricultural Agron animal production annual Arnold Aust beef botanical composition breeding calves Cambridge canopy cattle Chapter crops cutting dairy cows deficiency defoliation denitrification diet digestibility DM ha"1 dry matter Ecol ecosystems Editors effect efficiency etal ewes excretion factors farms Farnham Royal feed requirement fertilizer nitrogen Grassland Congr Grassland Soc grazing animals grazing management growth rate hectare herbage intake herbage production herbage yield increase influence inputs intensive kg DM kg N ha"1 lambs leaf area leaf area index legumes liveweight Lolium perenne losses managed grasslands ment milk production mineral Minson N.Z. J. Agric nitrogen cycle nitrogen fertilizer nitrogen fixation North Island nutrients nutrition pasture growth pasture production perennial ryegrass phosphate phosphorus photosynthesis plant Proc Prod rainfall Rattray reduced reproductive response Ruakura seasonal pattern selenium sheep silage soil stocking rate studies sward temperature tillers tion tropical uptake urine utilization white clover Zealand