The high-clearance sprayers use such information to fertigate with variable, rather than fixed, rates of nitrogen, saving money and reducing the risk of leaching.
Meanwhile, scientists are scrutinizing healthy young peach trees to find out how to fertigate for the best yields of this delicious fruit.
Of the remaining 30.4% who did not use fertigation, 45.1% (13.7% of all respondents) were unable to fertigate because they irrigated entirely by flooding or furrow and could not inject fertilizer into the irrigation system.
Among growers with the technical capacity for fertigation (excluding those who irrigated entirely by flood and/or furrow), there was no significant difference (P = 0.051) in likelihood to fertigate between first-generation and second-generation or greater growers (table 2).
Among all growers with the technical capacity to fertigate, there was a significant relationship between likelihood to fertigate and acreage (P < 0.001) (table 2).