Abstracts of Articles on Seeding and Planting1930 - Afforestation - 134 pages |
Common terms and phrases
areas best method best results Brief of article broadcast sowing chemical conclusions coniferous coniferous seedlings conifers copper sulphate cost cultivation damage damping damping-off decreased delayed germination density depth of cover Douglas fir drill sowing Engelmann spruce experiments carried Expt factors fall sowing fall-sown fertilizers frost germination greenhouse hardwood heat hemlock incense cedar increase injury insects Jeffrey pine Jour lesions lodgepole Michigan moisture Mont Alto mulch native species Norway spruce nursery practice optimum Pennsylvania period Picea pine seed Pinus plantations plots plow Quercus red pine reduce damping-off reforestation Reprint root systems sand Savenac Nursery Scotch pine seed beds seed stored seed-beds seedlings shade showed soaked sown spring sowing square foot steaming sterile storage sugar pine sulphuric acid survival temperatures Toumey transplant treatment tree seeds viability Wahlenberg western larch western white pine western yellow pine white fir white spruce Yale zinc sulphate