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WEEK 3
SUBJECT: AGRICULTURAL SCIENCE
CLASS: SS 3
TOPIC: CROP IMPROVEMENT
CONTENT:
SUB TOPIC 1: Meaning and Aims of Crop Improvement
Crop Improvement refers to the ways of developing and breeding of crop varieties which are better than the pre-existing cultivars in a number of characters like taste, height, colour etc for a better yield.
Crop improvement is defined as the science that deals with the development of new crop varieties with superior quality and quantity.
AIMS F CROP IMPROVEMENT
METHODS/PROCESS OF CROP IMPROVEMENT
INTRODUCTION: involves movement of plant(s) from the Center of origin of a supposed center of evolution to another place where they can adapt and survive. Such imported crops are usually guaranteed by the nation’s plant quarantine service before introducing it to the country.
ADVANTAGES
DISADVANTAGES
SELECTION: This is the process of picking from a number of individuals in the field found to possess desirable characteristics for further cultivation. Selection has number of methods:
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