Side-placing urea and other nitrogen fertilizers for spring barley
1964 ◽
Vol 62
(1)
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pp. 73-82
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1. Laboratory experiments compared alternative ways of placing urea for wheat. Urea greatly increased the pH in the seed-row; placed in contact with seeds, it killed many plants, but did not when placed 1 in. to the side of the seed.2. A combine-drill was modified so that, by simple adjustments, fertilizers could be placed in contact with the seed, or at 1 in. to the side of the seed, or broadcast over the seed-bed.3. Fifteen experiments with spring barley and one with spring wheat, made from 1960–62, compared yields from urea with yields from ammonium sulphate; calcium nitrate and sodium nitrate were tested in seven and in six experiments, respectively.
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1963 ◽
Vol 61
(3)
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pp. 381-390
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1959 ◽
Vol 52
(2)
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pp. 200-206
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1958 ◽
Vol 50
(3)
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pp. 312-321
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1976 ◽
Vol 16
(83)
◽
pp. 875
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1968 ◽
Vol 8
(32)
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pp. 301
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