Theme 04: Soil Fertility and Plant Nutrition
Description
The objectives are to study the effects of N and P supply and their interaction, on herbage dry matter yield and nutrient status of three tropical grasses. In order to estimate direct and indirect effects of P supply we express above-ground dry matter production as a function of the herbage nutrient status obtained from plant analysis. Results show that in absence of N, the significant increase in P nutrition status has only moderate consequences on herbage production and suggest that both N and P are limitant for herbage growth. P fertilization results in significant increase in dry matter yield only when N limitation is suppressed as well.
Citation
Topall, O.; Jouany, C.; Duru, M.; and Cruz, P., "Assessing the Effect of N and P Supply on Dry Matter Yield of Three Tropical Grasses" (2021). IGC Proceedings (1993-2023). 22.
https://uknowledge.uky.edu/igc/19/4/22
Included in
Assessing the Effect of N and P Supply on Dry Matter Yield of Three Tropical Grasses
The objectives are to study the effects of N and P supply and their interaction, on herbage dry matter yield and nutrient status of three tropical grasses. In order to estimate direct and indirect effects of P supply we express above-ground dry matter production as a function of the herbage nutrient status obtained from plant analysis. Results show that in absence of N, the significant increase in P nutrition status has only moderate consequences on herbage production and suggest that both N and P are limitant for herbage growth. P fertilization results in significant increase in dry matter yield only when N limitation is suppressed as well.
