shorter the duration of crop the more economical in the variety justified

Farmers usually choose shorter duration crops because the period from sowing of seeds to harvesting is very less and thus are more economical to the farmers. You might be knowing that farmers need to invest an lot of money right from buying seeds, fertilisers, labour for ploughing the fields and also electricity for irrigating their crops; hence, when a crop takes a long time to mature, the farmer has to invest a lot in its upkeepment and the profit will be considerably less when compared to the investment. Thus, farmers usually choose shorter duration crops so that their investment is minimal and profit is maximum.