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Effect of undercutting and wrenching on growth of Pinus radiata D. Don seedlings.

Published online: 05 Nov 1971

Authors: Rook, D. A.

Content type: Journal article

Journal title: Journal of Applied Ecology

cf. FA 31 No. 601.] Seedlings of P. radiata, from autumn sowings at Rotorua, New Zealand, were undercut in Dec. and then wrenched weekly (W/1), fortni...

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Changes attributable to pesticides in egg breakage frequency and eggshell thickness in some British birds.

Published online: 01 Jul 1970

Authors: Ratclife, D. A.

Content type: Journal article

Journal title: Journal of Applied Ecology

The following is virtually the author's summary. Since 1950, egg breakage has occurred with unprecedented frequency in the nests of peregrines (Falco ...

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