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Disadvantages of too much nitrogen in crop production are;Delayed maturityLodging in cerealsExcessive succulency
Reasons for pruning in crop production are;To train the plant so that it can have a desired shape.To remove diseased and unwanted parts of a plant. They may be less reproductive.Control cropping by removing extra vegetation parts and ensure uniform bearing.To facilitate picking e.g convenient for tea and coffee.To ease the penetration of spray since the bush is opened up.To control pests and diseases pruning opens up the bush and helps to control diseases and pests.
Reasons for seed selection include;High qualityHigh yieldHigh germination rateTo reduce chances of disease/pest attack Crops / avoid spread of weedsSeeds that can grow in specific area
Environmental factors affecting crop production include;RainfallTemperaturesWindSoil type