An experiment in the field is usually carried out by introducing nutrients for the crop at various costs. The ensuing response of yield in relation to amounts of nutrients supplied will reveal the supplying electric power of the unfertilized soil regarding bushels or a ton of deliver. If the increase https://npk12-12-17fertilizerafgh67801.articlesblogger.com/59997496/not-known-details-about-best-fertilizers-afghanistan