You work for the South Queenstown Land Trust, where you\'ve been asked to decide

Question

You work for the South Queenstown Land Trust, where you've been asked to decide other useful information for AP 10 whether to purchase the development rights of two properties: (1) a sod farm and, (2) a T-value -6 vegetable farm. Both have the same land area and are mapped as Enfield Silt Loam with a 0-3% slope. The SQLT uses the T- Harvested using sod cutter value as a criterion for purchasing development rights: if the estimated soil losses are higher than the T-value, the deal Soil loss rate 1 cmlyr Fig. 1. T-value, farm information, and Inputs of synthetic fertilizer and biosolids Bulk density = 1.3 Mg/m3 Vegetable Farm: you make a decision. 1. Calculate the soil loss from cacih Conventional tillage Synthetic fertilizer inputs farm using the information in Fig. 1 Bulk density = 1.1 Mg/m3 and decide which farmer gets the $3 | . Soil loss rate 0.5 cm/yr million for the development rights to Other Useful Information: their property 1ha = 10,000 2, ! 1 cm = 0.01 m what could the farmer that doesn't qualify for the $3 million do to reduce soil loss? Mass = Volume X Density

Explanation / Answer

1) Soil Loss (A) = R x K x LS x C x P

here R = rainfall and runoff factor

K = soil erodibility factor

LS = slope length-gradient factor

C = crop/vegetation and management factor

P = support practice factor

for sod farm (A) = R x K x LS x C x P

R = 100

K = 1cm/yr

LS = 0.4

C = 0.02

P = 0.75

A= 100*1*0.4*0.02*0.75 = 0.6 mg/ha/yr

for vegetable farm (A) = R x K x LS x C x P

R = 100

K = 0.5cm/yr

LS = 0.4

C = 0.5

P = 0.75

A= 100*0.5*0.4*0.5*0.75 = 7.5 mg/ha/yr

since vegetable farm soil loss is more than T value so sod farm farmer will get $3 million for the development rights to their property.

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