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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.
Norway spruce planted 1967, 6 years.
Norway spruce planted 1967, 6 years. Person is Professor George Switzer (Mississippi State University). Razès.
Control plot no fertilizer addition to Douglas fir.
Control plot no fertilizer addition to Douglas fir. Razès.
Norway spruce, 6 years from planting.
Norway spruce, 6 years from planting. Haute-Vienne, Limousin.
Plantation of Douglas fir, general view and foresters taking pictures.
Plantation of Douglas fir, general view and foresters taking pictures. Razès.
Processionary moth on Corsican pine.
Processionary moth on Corsican pine. Saint-Front, Dordogne.
Potassium deficiency in Corsican pine.
Potassium deficiency in Corsican pine. Saint-Front, Dordogne.
Potassium deficiency in Corsican pine.
Potassium deficiency in Corsican pine. Saint-Front, Dordogne.
Potassium deficiency in Corsican pine.
Potassium deficiency in Corsican pine. Saint-Front, Dordogne.
Potassium deficiency in Corsican pine.
Potassium deficiency in Corsican pine. Saint-Front, Dordogne.