""The awesome thing with pulse crops is no nitrogen needs... not having to put any nitrogen on a pulse crop is a great starting point," he says, noting that this allows growers to not only meet PKS requirements but, in some cases, build soil fertility for the rotation."
""Anytime that you skimp on one nutrient, that nutrient will become your limiting factor for that crop," he says, adding that if rates need to be trimmed for economic or logistical reasons, smaller reductions across all nutrients are preferable."
"Moisture, however, remains a key variable. Dry conditions can leave behind residual nutrients, while pulses themselves are relatively water-use efficient."
"Strydhorst also outlines how crop removal rates can act as a minimum benchmark to avoid mining soil reserves, and why fall soil testing has become a practical option, particularly given the limited mobility of phosphorus and potassium."
Pulse crops necessitate little to no nitrogen, enabling growers to concentrate on phosphorus, potassium, and sulphur to enhance yield and maintain soil fertility. Economic factors and moisture conditions significantly influence fertility planning. Nutrient management must be balanced to prevent yield limitations, with crop removal rates serving as benchmarks to protect soil reserves. Moisture levels affect nutrient availability, and certain crops, like faba beans, require more moisture and earlier planting, necessitating adjustments in crop strategies during delayed springs.
Read at Realagriculture
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