Grass Production on Blanket Peat: 3. Nitrogen Requirements

Five experiments were conducted to investigate the nitrogen requirements for pasture establishment and maintenance on blanket peat, the value of different sources of nitrogen, and the seeding rate of white clover required. Clovers established well with 0, 1 and 2 cwt. nitrogenous fertiliser per acre...

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Bibliographic Details
Published in:Irish journal of agricultural research 1964-10, Vol.3 (2), p.211-222
Main Authors: Grennan, E. J., Mulqueen, J.
Format: Article
Language:English
Subjects:
Ammonia
Calcium
Clover
Fertilizers
Grasses
Nitrates
Nitrogen
Peat
Sowing
Sward
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Summary:Five experiments were conducted to investigate the nitrogen requirements for pasture establishment and maintenance on blanket peat, the value of different sources of nitrogen, and the seeding rate of white clover required. Clovers established well with 0, 1 and 2 cwt. nitrogenous fertiliser per acre. Grasses established poorly without nitrogen, but improved as the clover content of the swards increased. Grasses responded to fertiliser treatments up to 8 cwt. per acre, but treatments above 2 cwt. depressed clovers; 1 or 2 cwt. applied at sowing time gave a good balance of grasses and clovers. There was a linear response to nitrogenous fertiliser up to 8 cwt. per acre in the first year. In subsequent years yield was not increased by treatments of 4 or 8 cwt., depending on the vigour of clover growth. Yields were higher and survival of sown species was better with calcium nitrate than with ammonium sulphate. Two pounds of white clover per acre gave a satisfactory clover content in the sward.
ISSN:0578-7483