Producción de biomasa de Cenchrus purpureus (Schumach.) Morrone, asociado con Canavalia ensiformis (L.), coinoculado con micorrizas y rhizobium y combinado con nitrógeno mineral
Objective: To evaluate the benefits of inoculation of Canavalia ensiformis (L.) with arbuscular mycorrhizal fungi and rhizobia in biomass production of Cenchrus purpureus (Schumach.) Morrone cv. Cuba CT-169, fertilized with medium doses of mineral nitrogen. Materials and Methods: The research was...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Estación Experimental de Pastos y Forrajes Indio Hatuey
2024-01-01
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| Series: | Pastos y Forrajes |
| Subjects: | |
| Online Access: | http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0864-03942024000100010&lng=es&nrm=iso&tlng=es |
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| Summary: | Objective: To evaluate the benefits of inoculation of Canavalia ensiformis (L.) with arbuscular mycorrhizal fungi and rhizobia in biomass production of Cenchrus purpureus (Schumach.) Morrone cv. Cuba CT-169, fertilized with medium doses of mineral nitrogen.
Materials and Methods: The research was carried out in a low-fertility soil of the Technical Scientific Basic Unit Soils, Barajagua, Cienfuegos, Cuba. A randomized block design was applied, with six treatments and three replicas: T1) C. ensiformis + C. purpureus CT-169, T2) C. ensiformis + C. purpureus CT-169 50 % N, T3) C. ensiformis + AMF + C. purpureus CT-169 50 % N, T3) C. ensiformis + AMF + rhizobia + C. purpureus CT-169 +50 % N, T4) C. purpureus CT-169 50 % N, T5) C. purpureus CT-169 100 % N and T6) C. purpureus CT-169. C. ensiformis was intercropped 20 days after the CT-169 leveling cut. At 60 days, it received a first cut and was deposited between the furrows for decomposition. The regrowth of C. ensiformis was allowed to grow for 65 days, to coincide with the 145 days of CT-169. At this time, the final cut was made to both species. Total biomass production was calculated in the treatments combining CT-169 and canavalia, for which both species were weighed independently and the percentage corresponding to the contribution of canavalia was determined. In the rest of the treatments, only the biomass of CT-169 was calculated. At the time of cutting, the height of CT-169 was measured, as well as the length and width of the fourth leaf. Subsequently, leaf area and total biomass production were calculated.
Results: The morpho-physiological indicators of treatments T5 and T6 differed from the others, with extreme values (high and low), respectively. Between treatments T3 and T4, there were no differences in stem diameter, length and width of the fourth leaf and leaf area. Regarding biomass production, treatment T5 reached the highest production with significant differences compared with the others, followed by treatment T3. In the treatments where C. purpureus CT-169 was associated with C. ensiformis, the legume constituted between 14,7 and 18,1 % of the total biomass production, respectively.
Conclusions: With the application of 100 % mineral nitrogen to C. purpureus CT-169, better yield was achieved in terms of the morphophysiological indicators as well as biomass production. In addition, the inclusion of C. ensiformis improved the forage quality, due to the protein contribution of the legume. |
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| ISSN: | 0864-0394 2078-8452 |