2. For the agroecosystem "homeplace" on the Delson Farm during the 2016-growing season,

quantify the selected components you are assigned for the nitrogen, phosphate, potash, carbon,

and water cycles.

Review HW1_Resources: Table 1. Nutrient content in corn grain and corn stover on Canvas. Show

your calculations.

A. N, P, K cycles: calculate the amount of N, P2O5, and K₂O on an acre bases, express the answer in

Ib/A units for

a. all soil nutrient inputs (4 pts)

Last name begins with the letters A-E: fertilizer that contain K₂0

Last name begins with the letters F-M: fertilizer that contain nitrogen

Last name begins with the letters N-Z: fertilizer that contain P2O5

b. grain at harvest (output) (4 pts)

Last name begins with the letters A-E: amount of nitrogen in corn grain

Last name begins with the letters F-M: amount of P₂O5 in corn grain

Last name begins with the letters N-Z: amount of K₂O in corn grain

c. corn stover at harvest (potential for cycling nutrients) (4 pts)

Last name begins with the letters A-E: amount of P2O5 in corn stover

Last name begins with the letters F-M: amount of K₂O in corn stover

Last name begins with the letters N-Z amount of nitrogen/nC.

corn stover at harvest (potential for cycling nutrients) (4 pts)

Last name begins with the letters A-E: amount of P2O5 in corn stover

Last name begins with the letters F-M: amount of K₂O in corn stover

Last name begins with the letters N-Z amount of nitrogen

B. Water cycle: calculate the amount of water on a per acre basis, express the answer in lb/A units

for:

All students: entering the farm ecosystem (input) (2 pts)

All students: leaving the farm via the harvested grain (output) (2 pts)

C. Carbon cycle: calculate the amount of carbon on a per acre basis, express the answer in lb/A

units for

All students: the grain (2 pts)

All students: crop residue at harvest (2 pts)