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Parents Pricing Home Leaving Cert Agricultural Science Fertilisers, Pollution & The Environment John's farm is Bord Bia Quality Assured
John's farm is Bord Bia Quality Assured - Leaving Cert Agricultural Science - Question (b) - 2022 Question (b)
View full question John's farm is Bord Bia Quality Assured. He aims to make his farm more sustainable. He is part of the Beef Emergency Aid Measure (BEAM) and is required to reduce his... show full transcript
View marking scheme Worked Solution & Example Answer:John's farm is Bord Bia Quality Assured - Leaving Cert Agricultural Science - Question (b) - 2022
Calculate the total bovine nitrogen (figure A) for John’s 1 – 2 year-old cattle for 2020-21. Only available for registered users.
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To calculate the total bovine nitrogen for John’s 1 – 2 year-old cattle, use the formula:
e x t T o t a l B o v i n e N i t r o g e n = e x t N u m b e r o f C a t t l e i m e s e x t N i t r o g e n p r o d u c e d p e r y e a r ( k g ) ext{Total Bovine Nitrogen} = ext{Number of Cattle} imes ext{Nitrogen produced per year (kg)} e x t T o t a lB o v in e N i t ro g e n = e x t N u mb ero f C a ttl e im ese x t N i t ro g e n p ro d u ce d p erye a r ( k g ) Substituting the values:
e x t T o t a l B o v i n e N i t r o g e n = 40 i m e s 57 = 2280 e x t k g ext{Total Bovine Nitrogen} = 40 imes 57 = 2280 ext{ kg} e x t T o t a lB o v in e N i t ro g e n = 40 im es 57 = 2280 e x t k g Thus, figure A is 2280 kg.
Calculate the total bovine nitrogen (figure B) for all animals on John’s farm for 2020-21. Only available for registered users.
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To find the total bovine nitrogen for all livestock, sum the nitrogen produced for each type:
Suckler cows: 2990 kg
Cattle (0 - 1 year): 1056 kg
Cattle (1 - 2 year): 2280 kg
Bull (1 - 2 year): 72 kg
Bull (2 years): 57 kg
Total:
B = 2990 + 1056 + 2280 + 72 + 57 = 6495 e x t k g B = 2990 + 1056 + 2280 + 72 + 57 = 6495 ext{ kg} B = 2990 + 1056 + 2280 + 72 + 57 = 6495 e x t k g Thus, figure B is 6495 kg.
State if John achieved his target of 5% bovine nitrogen reduction in 2020-21. Only available for registered users.
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To find out whether John achieved his target, calculate the target nitrogen reduction:
e x t T a r g e t = 6992 i m e s 0.05 = 349.6 e x t k g ext{Target} = 6992 imes 0.05 = 349.6 ext{ kg} e x t T a r g e t = 6992 im es 0.05 = 349.6 e x t k g Calculating the allowed nitrogen after reduction:
e x t A l l o w e d N i t r o g e n = 6992 − 349.6 = 6642.4 e x t k g ext{Allowed Nitrogen} = 6992 - 349.6 = 6642.4 ext{ kg} e x t A ll o w e d N i t ro g e n = 6992 − 349.6 = 6642.4 e x t k g John's current nitrogen level is 6495 kg, which is below 6642.4 kg. Therefore, John did achieve his target of a 5% reduction.
State two possible environmental benefits John could see if he achieved the 5% bovine nitrogen reduction on his farm. Only available for registered users.
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Improved water quality due to reduced nitrogen runoff, which can lead to less eutrophication in nearby water bodies.
Enhanced soil health, which can contribute to better crop yields and support biodiversity on the farm.
Describe three ways to improve energy efficiency on all types of farms. Only available for registered users.
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Implementing energy-efficient heating systems, such as using heat pumps or solar heating.
Utilizing LED lighting throughout the farm to reduce electricity consumption.
Enhancing insulation in buildings to minimize energy loss, thereby reducing heating and cooling costs.
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