Evaluation of carbohydrate reserves, yield and quality in three tropical grasses

Bernal, Javier

doi:10.31274/rtd-180813-2663

Cited by 1 publication

(2 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This reflected in the grasses dry mass production, which was high in this moment of fertilization (Table 2), suggesting full recovery of the remaining plant area after defoliation and synthesis of new tissues. According to Bernal [30], under conditions that promote rapid growth, the reserve carbohydrate content may be reduced or remain at a low level, since most of the photoassimilates are retained as sucrose at the active growth points.…”

Section: Resultsmentioning

confidence: 99%

“…Under conditions of reduced grass growth due to lower nitrogen uptake, environmental stress or when the energy set in photosynthesis exceeds growth requirements, reserve compounds tend to accumulate. In tropical and subtropical grasses the most important nonstructural carbohydrate in the root system is normally starch, although sucrose may be a considerable reserve component during some periods of plant life [30].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Investigating the Optimal Day for Nitrogen Fertilization on Piatã palisadegrass and Quênia guineagrass after Defoliation

Faria

Avelino

Cabral³

et al. 2019

JEAI

View full text Add to dashboard Cite

Considering that nitrogen is the main macronutrient limiting pasture productivity, the aim of this study was to investigate the most appropriate day for nitrogen fertilization of the grasses Brachiaria brizantha BRS Piatã and Panicum maximum BRS Quênia. The experiment was conducted in a greenhouse in the city of Rondonópolis, located in the state of Mato Grosso, Brazil, using a completely randomized design. The treatments consisted of five nitrogen fertilization periods: 0; 2; 4; 6 and 8 days after defoliation. The dry mass of the leaf blade (DMLB), dry mass of stem + sheath (DMSS), dry mass of residue (DMRES) and root dry mass (RDM) were evaluated. The non-structural carbohydrate of the grass roots was also quantified. The later nitrogen fertilization after defoliation reduced DMLB (P< .01) and DMSS (P< .01) of the BRS Piatã palisadegrass, and DMRES of both grasses (P< .01). Higher levels of water soluble carbohydrates were observed when nitrogen fertilization was performed on grass cutting (day 0). Nitrogen fertilization of the BRS Piatã palisadegrass close the time of defoliation is recommended. For Quênia guineagrass, nitrogen can be applied between the cutting day and the eighth day after defoliation. For the root system, there is a higher content of water soluble carbohydrates in the BRS Piatã palisadegrass and greater accumulation of starch in the BRS Quênia guineagrass.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%