COMPARISON OF FALL AND SPRING APPLICATIONS OF N-15-LABELED UREA TO DOUGLAS-FIR .1. GROWTH-RESPONSE AND NITROGEN LEVELS IN FOLIAGE AND SOIL

[11] OVERREIN L N, 1972, Meddelelser fra det Norske Skogforsoksvesen, V29, P445

[12] OVERREIN LN, 1967, SOIL SCI, V106, P280

[13] Popovic B., 1972, "Isotopes and Radiation in Soil Plant Relationships including Forestry". Proceedings of a Symposium, Vienna, 13-17 December 1971., P359

[14] APPARATUS FOR PREPARING NITROGEN FROM AMMONIUM-CHLORIDE FOR N-15 DETERMINATIONS [J]. ANALYTICAL CHEMISTRY, 1977, 49 (03) : 514 - 516

[15] A RAPID PROCEDURE FOR PREPARING GAS SAMPLES FOR N-15 DETERMINATION [J]. ANALYST, 1970, 95 (1134) : 817 - &

[16] NITROSATION OF SOIL ORGANIC MATTER .3. NATURE OF GASES PRODUCED BY REACTION OF NITRITE WITH LIGNINS, HUMIC SUBSTANCES, AND PHENOLIC CONSTITUENTS UNDER NEUTRAL AND SLIGHTLY ACIDIC CONDITIONS [J]. SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1970, 34 (03): : 430 - +

[17] 1980, 1978 1980 U WASH COL

[11] OVERREIN L N, 1972, Meddelelser fra det Norske Skogforsoksvesen, V29, P445

[12] OVERREIN LN, 1967, SOIL SCI, V106, P280

[13] Popovic B., 1972, "Isotopes and Radiation in Soil Plant Relationships including Forestry". Proceedings of a Symposium, Vienna, 13-17 December 1971., P359

[14] APPARATUS FOR PREPARING NITROGEN FROM AMMONIUM-CHLORIDE FOR N-15 DETERMINATIONS [J]. ANALYTICAL CHEMISTRY, 1977, 49 (03) : 514 - 516

[15] A RAPID PROCEDURE FOR PREPARING GAS SAMPLES FOR N-15 DETERMINATION [J]. ANALYST, 1970, 95 (1134) : 817 - &

[16] NITROSATION OF SOIL ORGANIC MATTER .3. NATURE OF GASES PRODUCED BY REACTION OF NITRITE WITH LIGNINS, HUMIC SUBSTANCES, AND PHENOLIC CONSTITUENTS UNDER NEUTRAL AND SLIGHTLY ACIDIC CONDITIONS [J]. SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1970, 34 (03): : 430 - +

[17] 1980, 1978 1980 U WASH COL