Agriculture Monograph, Issue 18 |
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Page 36
... larvae of moths ( Dioryctria spp . ) in longleaf cones , may continue to feed in the extractory and consume appreciable quantities of seed unless they are destroyed by prompt kiln- drying of the cones . Rodents and birds are likely to ...
... larvae of moths ( Dioryctria spp . ) in longleaf cones , may continue to feed in the extractory and consume appreciable quantities of seed unless they are destroyed by prompt kiln- drying of the cones . Rodents and birds are likely to ...
Page 63
... larvae of fungus gnats sometimes attack first the mold and then the seeds in peat - mat tests , and seeds in sand . This ordinarily occurs only when temperatures are unfavorably high , and mostly in greenhouses open to outside air . On ...
... larvae of fungus gnats sometimes attack first the mold and then the seeds in peat - mat tests , and seeds in sand . This ordinarily occurs only when temperatures are unfavorably high , and mostly in greenhouses open to outside air . On ...
Page 86
... larvae of Leconte's sawfly at various stages of develop- ment ; E , May - beetle larva ( white grub ) . ( Photos courtesy Bureau of Entomology and Plant Quarantine . ) FIGURE 26. - A , Telia of Cronartium fusiforme on. Cutworms vary in ...
... larvae of Leconte's sawfly at various stages of develop- ment ; E , May - beetle larva ( white grub ) . ( Photos courtesy Bureau of Entomology and Plant Quarantine . ) FIGURE 26. - A , Telia of Cronartium fusiforme on. Cutworms vary in ...
Page 87
... larvae of Prionid beetles sometimes cut the roots of southern pine seedlings much as do white grubs , though usually earlier in the season . In- jury occurs mostly on newly cleared nursery sites , and usually ceases after the first year ...
... larvae of Prionid beetles sometimes cut the roots of southern pine seedlings much as do white grubs , though usually earlier in the season . In- jury occurs mostly on newly cleared nursery sites , and usually ceases after the first year ...
Page 88
... larvae themselves . These vary from one - eighth inch when hatched to 1 inch long when full grown . Young larvae are almost transparent ; older ones are a dirty cream color , with hard brown heads , six jointed legs , and nearly ...
... larvae themselves . These vary from one - eighth inch when hatched to 1 inch long when full grown . Young larvae are almost transparent ; older ones are a dirty cream color , with hard brown heads , six jointed legs , and nearly ...
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Common terms and phrases
acid acre applied areas average bales beds Bogalusa bordeaux mixture brown spot cankers carbon disulfide cones cost culling damping-off dewinged disease effective estry feet fertilizer Forest Expt Forestry Forestry 37 fusiform rust gallons germination germination tests green manure hardwoods height growth illus inches increase infection initial survival injury Johnson Tract Jour kill kiln leaf pine leaf-cutting ants less lifting lings loblolly pine longleaf pine longleaf seed moist mole crickets mycorrhizae nursery soil nursery stock Nurseryman nutrient peat percent percentage pine plantations plantable plantations planter pounds pruning reduce require samples sand scale insects seed lots seedbed seedlings shortleaf pine slash pine South southern pine nursery southern pine region southern pine seed sowing spacing species spray stands storage subsamples sulfate surface temperature thinning tion total number trays treatment trees U. S. Dept U. S. Forest Service usually weeds weight