Show aerial photos offer accurate farm record with the advent of the agricultural adjustment act and the need for accurate field measurement to check compliance with the soil conservation program aerial photography came into its own oam as a cheap quick indisputable method of land mapping accurate field measurement is important under the AAA because conservation payments are made at a specified rate per acre of land I 1 planted prior to the use of air photography a number of methods ranging from the old measuring wheel to surveying were used cost of checking performance from the air is about one third less than the earlier methods of land measurement air photography costs about four cents per acre as compared with six cents per acre under older measuring methods the cost is included as part of the administrative expense deducted from payments to farmers |