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The relationship between heat unit accumulation and the planting and harvesting of canning peas

, : The relationship between heat unit accumulation and the planting and harvesting of canning peas. Agron Jour 44(2): 74-78

The relationship between heat unit accumulation and tenderometer readings was studied using temp records from Madison, Wis., and field data from Columbus, Wis., for Alaska and Sweet peas for the 3-year period, 1942-44. The relationship found was essentially linear. The difference using the direct summation and the exponential method was small. The heat unit accumulation necessary to bring the crop to the same stage of maturity differed from season to season, being lower in cool seasons and higher in warm seasons. The relationship between the heat requirements of Alaska and Sweet peas was nearly constant for the 3 years. A method for a controlled system of planting and harvesting was outlined.


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Jeroch, H.; Danicke, S., 1995: Barley in poultry feeding: a review. In most European countries, barley (Hordeum vulgare) is an important feed for poultry, and its use could increase with changes in economic circumstances. This review covers chemical composition, antinutritional substances, genetic factors, harvest...