Part I Field Crops 35 marks AROID CROPS 10 marks 1 Discuss three 3 management

Part i field crops 35 marks aroid crops 10 marks 1

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Part I – Field Crops (35 marks)AROID CROPS(10 marks)1. Discuss three (3) management practices that a farmer can use to increase the number of suckers on acultivar of Colocasia esculenta (L) Schott in order to produce more planting materials. 3 marks 2. Compare Xanthosomaand Alocasiain terms of the following:a. Tolerance to droughtb. Ability to yield well on hard, stony soilsc.Time to maturityd. Main edible part(s) 4 marks 3. Discuss the cultivation of Cyrtosperma under the following broad topics: a.Production systemb.Land preparationc.Nutrient supply 3 marks TUBER CROPS (15 marks) 4. Discuss how and why Manihot esculenta yields well under marginal soil fertility and soil moistureconditions. 2 marks 5. Discuss the development physiology (growth stages) of Dioscorea spp. 5 marks 6. Outline some cultural control methods for dieback or anthracnose disease of yams. 2 marks 7. Discuss the production of Ipomea batatas under the following topics:a. Hardening of vine cuttingsb. Curing and storage2 marks8. Why are sweet potato yields lower in the rainy season than in the dry season? 2 marks 9. Why is ‘hilling up’ important in sweet potato cultivation? 2 marks Page 3 of 5
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CEREALS (6 marks) 10. Briefly describe the basis of the classification system for Zea mayscultivars 1 mark 11. How would you identify when a maize cob reaches physiological maturity. 1 mark 12. Discuss land preparation required for wetland/swamp paddy production. 2 marks
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  • Summer '19
  • Araceae, Taro, Black pepper, Faculty of Business and Economics

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