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Copper deficiency in Douglas fir.
Copper deficiency in Douglas fir. n.b. crook in stem. Razès.
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Nitrogen deficiency in Norway spruce planted 1967
Nitrogen deficiency in Norway spruce planted 1967, 6 years. Razès.
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Douglas plot with N, P, K and Cu added.
Douglas plot with N, P, K and Cu added. c.f. slide 989 and note the difference in growth and colour. Razès.
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Norway spruce planted 1967, 6 years.
Norway spruce planted 1967, 6 years. Person is Professor George Switzer (Mississippi State University). Razès.
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Control plot no fertilizer addition to Douglas fir.
Control plot no fertilizer addition to Douglas fir. Razès.
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Norway spruce, 6 years from planting.
Norway spruce, 6 years from planting. Haute-Vienne, Limousin.
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Plantation of Douglas fir, general view and foresters taking pictures.
Plantation of Douglas fir, general view and foresters taking pictures. Razès.
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Processionary moth on Corsican pine.
Processionary moth on Corsican pine. Saint-Front, Dordogne.
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Potassium deficiency in Corsican pine.
Potassium deficiency in Corsican pine. Saint-Front, Dordogne.
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Potassium deficiency in Corsican pine.
Potassium deficiency in Corsican pine. Saint-Front, Dordogne.
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