AGRIC SUMMERY ANSWERS Verified Agric OBJ: 1-10: cbbbaebeeb 11-20: cdaeceedca 21-30: dacaadacda 31-40: bbaeccbeac 41-50: adebcbcaec 51-60: dcbadeabcb (1)a. -creation of job opportunity=agr iculture provides job oppotunity for the teaming population of a nation. -source of food=agriculture provides food for the teaming population of a nation. -source of income=agriculture provides income for both the individuals and the nation. (1b.)The five difference between subsistenceagri culture and commercial agriculture are: i.subsisten ce does not require large area ofland while commercial requires large area ofland. ii.subsi stence requires manual labour whilecommercial requires mechanize system. iii.Subs istence ,production is for family usewhile commercial,prod uction is for sales. iv.in subsistence little capital is needed whilein commercial huge capital is needed.v.subsis tence does not require hiredlabourers while commercial requires hiredlabourers. (1c.) The three disadvantages of land tenure systems are: - it makes land to be fragmented as the death of the owner may lead to sharing of the land among his children. it does not allow mechanized agriculture. - prospective farmers may not have access to the required land. (4ai) Drainage is a process whereby excess water in the soil is removed artificially to promote good farming activities. (4aii) -it easy to construct -it cheaper than sub- surface drainage -cost of maintance is low -it more efficient -high value crops are grown (4b) -nitrogen -phosphorus -potassium -calcium -sulphur -Iron (4c) -by planting cover crops -by application of farm yard manure -by mulching the soil (5a) Husbandry of Maize (5ai) Climatic and soil requirement - Maize requires a temperature of 26degree celsius- 30 degree celsuis -Rainfall of between 75cm-150cm per annum and -Drained sandy loamy soil of PH 6-7 (5aii) Method of propagation - Maize is propagated by seed -Maize seeds can be planted manually by stick or cutlass or mechanically by planter (5aiii) Planting date -Early maize is planted between march / april -Late maize is july/august - Maize (early or late) is also planted, depend on location and rainfall (5aiv) Spacing: 90cm *30cm at one seed per hole or 75cm*25cm at two seeds per hole (5b) 1- provision of food 2- provision of fuel 3- provision of medicinal herbs 4- forest serves as wind break 5- provision of employment 7- prevention of soil erosion 8- home of wild animals 3a) title of experiment: to determine the moisture center of a soil sample. marerial require: soil sample weighing balance evaporating dish stirring rod wire guaze bunsen burner tripod stand. Procedure: - weight the mass of the empty evaporating dish -place a sample of soil into the dish and reweigh -heat the dish with the soil with a bunsen burner for two to threehours -stir the soil constantly with the glass rod to aid evaporation -the dish with the soil is cooled in a desication and reweighed. Result and calculation mass of empty evaporation dish=xg mass of dish + fresh soil=ag mass of fresh soil only = (x-a)g mass of dish + dried soil=cg mass of dried soil only=cg-xg mass of water driven off=(d-e)g percentage of water by mass= (mass of water)/(mass of fresh soil)*100/1 (3b) effect of clean clearing on the soil -it result in the disturbing or removal of top soil -it exposes the soil to direct sunshine -it increase the temperature of the soil -it exposes the soil erosion -it leads to reduction of soil organisms (3c) -millipede -nematode -earth worm -termite -centipede (3d) -sprinkle irrigation -drip irrigation (10a) (i.) The law of demand states that the higher the quantity demanded of a given goods and services the higher the price and the lower the quantity supplied and vice versa. (10aii.) The four factors that affect the supply of cassava in Nigeria are: -the demand for cassava:the demand for cassava affects its supply,ie the higher the demand the lower the quantity supplied and vice versa. -price:the higher the price of cassava the higher the quantity supplied of cassava and vice versa. -income of consumers:the income of consumers will affect the supply of cassava because the higher the income the higher the demand and the higher the supply. -taste and fashion:change in taste of consumer for other goods will affect the supply of cassava. GOOD LUCK! ! ! Dont forget to tell ur frndz about BEST EXAM Update and also share BEST EXAM Update
Posted on: Fri, 28 Jun 2013 11:43:01 +0000
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