Silage and corn grain productivity in succession to winter cover crops
Corn is a crop of great importance and with a growing demand, but it requires a large amount of inputs. Therefore, cover crops preceding the corn crop are being evaluated in order to reduce the need for the use of chemical fertilizers. The objective of the present study was to evaluate the effect of different combinations and proportions of cover crop seeds on the productivity of silage and corn grains. The treatments implemented were: T1 - fallow; T2- Black oats-100%; T3- Vetch-100%; T4- 90% vetch + 10% black oats; T5- 75% Vetch + 25% Black oats and T6- 50% Vetch + 50% Black oats, in a randomized block experimental design with three replications. In all treatments, the green and dry mass of the cover crops were evaluated, in addition to the silage and grain productivity of the corn cultivated in the sequence. As a result, it was observed that T2 (100% oat) presented the highest amount of green and dry mass with values of 31,366 kg ha-11 and 5,420 kg ha-1, respectively. Regarding corn silage productivity, the predecessor treatments with vetch (T3 - 100%) and the combination of 90% vetch + 10% black oat (T4) and 75% vetch + 25% black oat (T5), presented the best results, with productivity of 62,775 kg ha-1; 62,451 kg ha-1; and 61,751 kg ha-1, respectively. These treatments also resulted in higher corn grain productivity, with values of 13,860 kg ha-1; 13,720 kg ha-1; and 13,650 kg ha-1, respectively. Therefore, single oats as a cover crop showed the best production of green and dry mass, but did not increase the productivity of silage and corn grains. However, the cultivation of single vetch (100%) or in intercropping (90% and 75%) with black oats resulted in greater productivity of silage and corn grains.
| Main Authors: | , , , , , , |
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| Format: | Digital revista |
| Language: | por |
| Published: |
San Lorenzo: Universidad Nacional de Asunción Facultad de Ciencias Agrarias
2024
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| Online Access: | https://www.agr.una.py/revista/index.php/ria/article/view/795 |
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| Summary: | Corn is a crop of great importance and with a growing demand, but it requires a large amount of inputs. Therefore, cover crops preceding the corn crop are being evaluated in order to reduce the need for the use of chemical fertilizers. The objective of the present study was to evaluate the effect of different combinations and proportions of cover crop seeds on the productivity of silage and corn grains. The treatments implemented were: T1 - fallow; T2- Black oats-100%; T3- Vetch-100%; T4- 90% vetch + 10% black oats; T5- 75% Vetch + 25% Black oats and T6- 50% Vetch + 50% Black oats, in a randomized block experimental design with three replications. In all treatments, the green and dry mass of the cover crops were evaluated, in addition to the silage and grain productivity of the corn cultivated in the sequence. As a result, it was observed that T2 (100% oat) presented the highest amount of green and dry mass with values of 31,366 kg ha-11 and 5,420 kg ha-1, respectively. Regarding corn silage productivity, the predecessor treatments with vetch (T3 - 100%) and the combination of 90% vetch + 10% black oat (T4) and 75% vetch + 25% black oat (T5), presented the best results, with productivity of 62,775 kg ha-1; 62,451 kg ha-1; and 61,751 kg ha-1, respectively. These treatments also resulted in higher corn grain productivity, with values of 13,860 kg ha-1; 13,720 kg ha-1; and 13,650 kg ha-1, respectively. Therefore, single oats as a cover crop showed the best production of green and dry mass, but did not increase the productivity of silage and corn grains. However, the cultivation of single vetch (100%) or in intercropping (90% and 75%) with black oats resulted in greater productivity of silage and corn grains. |
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