I chose to have a cow,big bread, farm, and I decide to have 100ha and I sow with barley maize grass wheat.30ha barley, 40ha grass, 10 ha wheat and 20ha maize.

BARLEY GRASS

30ha 40ha

WHEAT MAIZE

10ha 20ha

For a big bread we need 0,85DE/cow1,7DE maximum of DE/ha

0.85x1,7x100ha=144cowsIn 1 tone slurry is 5.60kg N

To spray slurry we need:

a. For maize:

30-40t/ha before sawing 25-30t/ha injected when the plants have 15 cm

35t/ha x 20ha=700t slurry before sawing700t slurry x 5.60kg N=3920kg N3920kg N x 25%N(evaporate)=980kg N evaporate; we need tu use 980kg N from the

fertilizer.

30t/ha x 20=540t slurry when it have 15 cm540t slurry x 5.60kg N=3024kg N3024kg N x 25% kg N=756kg N...as fertilizer

b. For barley

20-25t/ha from end of march until middle of April.

25t/ha x 30ha=750t slurry750t slurry x 5,60 kg N=4200kgN4200kgN x 25%=1050kgN...as fertilizer

c. For wheat

20-30t/ha from end of march until 1 may

25t/ha x 10ha=250t slurry250t slurry x 5,60kgN=1400kgN1400kgN x 25%=350kg N ..as fertilizer

d. For grass

20-30t/ha early spring to take care of soil15-20t/ha after each cutting

30t/ha x 40ha=1200t slurry to take care of soil1200t x 5.60=6720kgN6720kgN x 25%=1680kgN ... as fertilizer

20t/ha x 40ha=800t slurry after each cutting800t x 5,60=4480kgN4480kgN x 25%=1120kgN ..as fertilizer

To know when we sow and how much and to harvest and how much depends to each crop and we need the formula:(TGW x crops/m2)/germination%=kg/ha

a. Barley

We sow barley in September and we harvest in July almost 50-65hkg/ha

TGW=45g200plants/m2

germination=90%

(45x200)/90%=100kg/ha x 30ha=3000kg of seeds

65hkg/ha x 30ha=1950hkg in harvest

b. Maize

We sow the maize in end of April and beginning of may. We harvest the maize in October around 9000FU/ha

TGW=250 g 10 plants/m2

germination=90%

(250 x 10)/90%=250kg x 20ha=5000kg of seeds

c. Wheat

We sow in march and we harvest in august almost 52hkg

TGW=45g200plants/m2

germination=90%

(45x200)/90%=100kg/ha x 10=1000kg of seeds

52hkg/ha x 10=520hkg harvest

d. Grass

We sow grass in March - April and we need 25 kg/ha

25kg/ha x 40ha =1000kg for seeding

We harvest 2 ore 3 times per year.

The amount of harvest is below average because:

the fertilizer wasn't good low amount of water disease the plough process was bad seeding process wasn't correctly done