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The relationship of exchange acidity and exchangeable aluminum in limed and unlimed profile samples of soil from western Oregon to the yield and chemical composition of alfalfa

Creator:

Janghorbani, Morteza

Abstract:

Acidity distribution within any given soil profile is dependent on mineralogical make-up of the parent material as well as environmental conditions prevalent during the weathering history of the soil. An experiment was designed to study the distribution pattern of exchange acidity, exchangeable aluminum, exchangeable manganese and pH of six acid...

Resource Type:

Masters Thesis
Effects of residual and applied nitrogen on Nugaines wheat

Creator:

Laopirojana, Pojanee

Abstract:

A study was made to evaluate the effect of different rates of N fertilization on Nugaines wheat. The variable N treatments provided different N regimes as a basis for evaluating potential diagnostic tests for assessing the N status of the wheat plant. The crop was grown in Lane county during...

Resource Type:

Masters Thesis