Roots on grass supplied with N, P, and K
The N-only pot looked pretty good when I showed roots after 184 days.
But that same grass grew a lot more, and produced a lot more underground roots and rhizomes, when P and K were added.
![](/media/manilagrass_npk_8_sequence_hu33d8f2710ea4928d295bd08cdc05f6eb_640305_dc1f1f66e0397f8c5279e9ccb04d3ba7.webp)
You’ll notice in the image sequence above that the manilagrass supplied with N, P, and K almost had full cover of the pot by January 9. At 100 days after planting, the grass with N-P-K had about the same ground coverage as the N-only grass did at 184 days.
There’s a lot more undergound plant material too, when the grass is not deficient in N, P, or K.
![Greens-type manilagrass grown from a 3 cm diameter plug and fertilized N, P, and K for 6 months.](/media/roots_npk_2apr_hu35856557741bf866a7bc86422fe87ebd_492764_b091a3aea4c393628123ee9adba5da87.webp)
I arranged the images side-by-side for comparison.
![](/media/side_by_side_roots_hu33d8f2710ea4928d295bd08cdc05f6eb_301363_12e5cf2cf5b03c4a6129f6d5dd377883.webp)
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