There are a variety of grasses used for lawns and sports turf in central Thailand. I gave a presentation last week at the American Society for Horticultural Science annual meeting about the growth of three of those grasses:
- ‘nuan noi’ manilagrass (Zoysia matrella)
- ‘Tifway 419’ bermudagrass (Cynodon dactylon x C. transvaalensis)
- ‘salam’ seashore paspalum (Paspalum vaginatum)
The manilagrass grew the most in this experiment, which we ran for 48 days. All the grasses were supplied with a weekly rate of 1 g N m-2, and K was added to supply half, the same, and twice the amount of N. This plot shows the relationship between tissue K content and the daily growth rate.
Although the treatments to the grasses were different N:K ratios, the larger differences were the amount of growth between the grasses themselves.
I understand that the presentation audio was recorded and I’ll share that when it is available.