Effect of Foliar Spray of Different Calcium Salts on Vegetative Growth and Yield of Potatoes (Solanum tuberosum L.)
journal of kerbala university,
2010, Volume 6, Issue 3, Pages 68-75
AbstractThis experiment was carried out in the vegetable field of Horticulture Department , College of Agriculture , University of Baghdad , Abu-Ghraib , during fall 2006 and spring 2007 seasons using (Desiree and Ajiba) potato cultivars seed class (A) in fall season and Desiree cultivar class (Elite) in spring season. In this experiment the effect of spraying different calcium salts on vegetative growth and yield of potatoes was tested. Three calcium salts (CaCl2.6H2O , Ca(NO3)2.4H2O and CaSO4.2H2O) were used at three concentration and 5 g CaCl2.6H2O / l was adopted as a recommended concentration. Solution of above mentioned salts was foliar applied twice , first at vegetative growth stage and second at tuber bulking stage , using a Split – Plot experiment in fall season and Randomized Complete Block Design in spring season with three replicates for both seasons.
Results showed that the highest values of vegetative growth parameters due to spray 5.37 g Ca(NO3)2.4H2O / l for both season. In fall season spraying treatment to Desire cultivar produced highest number of stem / plant , whereas this treatment to Ajiba cultivar resulted in greatest leaf area / plant and dry weight of vegetative part. In spring season this treatment also resulted in greatest values of all vegetative growth characteristics . Moreover spraying treatment of 5.37 g Ca(NO3)2.4H2O / l resulted in greatest yield characteristics for both seasons. In fall season spraying treatment to Ajiba cultivar resulted in highest average marketable tuber weight (122.50 g / tuber) while spraying treatment to Desire resulted in highest total yield (29.88 ton / ha). In spring season , the same treatment produced highest average marketable tuber weight (122.87 g / tuber) and highest total yield (58.27 ton / ha). Spraying of 5.37 g Calcium Nitrate / l at 45 and 65 days after planting to improve vegetative growth and total yield is recommended
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