Table 4. Effect of P supply specific root density (cm/g root) and root radius (cm x 1000) of safflower and sunflower. For a given species and a given soil type, means within each column followed by the same capital letter are not significantly different, means in the same soil type and the same P level and different plant species followed by the same small letter are not significantly different, * indicates significant difference for a given plant species and a given P level within soil types. P< 0.05, n=3

From

Mechanisms of Phosphorous Uptake Efficiency of Safflower and Sunflower Grown in Different Soils

Jehad Abbadi, Klaus Dittert, Bernd Steingrobe, Norbert Claassen

Research in Plant Sciences. 2017, 5(1), 26-42 doi:10.12691/plant-5-1-4