An experiment to determine the effects of date of sowing on the yield and quality of harvesting peas 1953–56

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Abstract
Three sowings of marrowfat peas were made at about 20-day intervals at forty-seven centres in eastern England over 4 years. The sowing period ranged from late February to late April, varying with seasonal conditions. Bird damage caused considerable loss of sowings but satisfactory yield data were obtained from forty-one of the trials.Highest yields were obtained from drillings made in the last 10 days of February. After mid-March each week's delay in sowing resulted in a yield loss of about 3/4 cwt. per acre. Quality fell off slightly from February onwards.Early sowings suffered some loss of plant in tractor wheelings but were negligibly affected by cold weather.Early sowings appear likely to encounter better harvest weather than late sowings and the chances of good harvest weather seem appreciably better in the centre and south of the pea-growing area than in the north. Early sowings mature before the cereal crop, enabling better attention to be given to the pea harvest.It was concluded that the crop should be sown as soon after the middle of February as soil conditions allow.