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This research aims to assess the nitrogen requirements of Mulato II hybrid grass using model identity analysis from related grass species.

July 23, 2026GrassesOpen Access

Nitrogen Requirement of a Tropical Grass Hybrid Determined by Model Identity Analysis

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Randomized trial evaluates nitrogen needs of Mulato II grass based on progenitor response patterns, suggesting fertilizer guidelines.

This research aims to assess the nitrogen requirements of Mulato II hybrid grass using model identity analysis from related grass species.
Greenhouse experiment with a completely randomized design in a 3 × 5 factorial arrangement
Evaluated three grasses and five nitrogen doses (0, 100, 200, 300, 400 mg dm−3)
Measured forage production, tiller density, and nutritive value during establishment and regrowth.
Mulato II exhibited similar response patterns to Urochloa brizantha for most evaluated traits but differed for tiller number and crude protein concentration.
Model identity analysis showed that Mulato II's nitrogen needs are more aligned with Urochloa brizantha under greenhouse conditions.
All measured traits indicated divergence from Urochloa decumbens.

Cabral et al. (2026) studied this question.

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