Effect of liming on the yield and nutrient uptake of potato, carrot, cabbage, and garden pea
1990
Marquez, W.L. | Baucas, M.B.
To optimize the use of soil-related inputs in vegetable production, a liming study was conducted to determine the most appropriate time of lime application and to know the best soil pH level at which different semi-temperate vegetables can efficiently utilize available nutrients. Lime can be applied either two weeks or one month before planting potato, carrots, and cabbage without affecting the marketable yield and nutrient uptake. Garden pea on the other hand yielded higher when lime was applied one month before planting. In white potato, liming increased haulm and tuber P concentration. Increasing soil pH to 5.74 enhanced NPK absorption by 11, 11, and 26 kg/ha, respectively which in turn resulted to higher yield. Further increase in soil pH up to 6.78 enhanced N absorption but decreased P and K uptake. Liming to pH 5.74 in carrots resulted to an increase in N and K absorption and higher root yield. In cabbage, soil pH level had no significant effect on the P and K concentration in heads while N content increased at pH 6.87. However, total NPK absorption was increased by 6-2-23 kg/ha. Addition of lime at the lowest rate of 5.0 t/ha (pH 5.78) significantly increased head yield over the unlimed plots. Garden pea shoot and pod NPK were not significant however, an increasing trend in the K concentration in the shoots and NPK concentration in green pods were obtained. Highest total NPK uptake was observed at pH 6.32 with an increase of 4-2-17 kg/ha from the no-lime plots. This treatment showed the highest green pod yield.
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