![]() Similarly, the CI of fruits sampled from 'Selah' cherry trees sprayed with T1, T2, T3 and T4 after 10 mm of rain was also measured. ![]() Prior to the field Ca washout experiment, cracking susceptibility, represented as cracking index (CI) of three different sweet cherry varieties (Selah, Skeena and Rainier) with different concentrations of calcium chloride (CaCl 2) and calcium nitrate (Ca(NO 3) 2) (T1 = 0.5% CaCl 2, T2 = 1.0% CaCl 2, T3 = 0.5% Ca(NO 3) 2, T4 = 1.0% Ca(NO 3) 2) was measured under laboratory condition. Therefore, the main purpose of this study was to quantify the potential washout of sprayed Ca-based chemicals from cherry fruit surface and leaf samples at different rain levels (2.5, 5.0 and 10.0 mm) under field condition. The Ca-based chemicals on the surface of fruit get diluted or washed out due to rain and understanding such washout rates is critical to decide upon re-application rates to prevent fruit cracking. Previous studies have proven that calcium (Ca)-based spray applications prior to rain events reduce rain-induced cracks in sweet cherries. ![]() Cracking of sweet cherries (Prunus avium L.) due to rain leads to serious economic loss to fresh market sweet cherry growers.
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