Chemical weed management strategies in bean (Phaseolus vulgaris L.)under drip irrigation
Estrategias químicas de manejo de malezas en la habichuela (Phaseolus vulgaris L.) con riego por goteo
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| dc.date | 2007-04-01 | |
| dc.date.accessioned | 2022-11-04T15:27:53Z | |
| dc.date.available | 2022-11-04T15:27:53Z | |
| dc.identifier | https://revistas.upr.edu/index.php/jaupr/article/view/2648 | |
| dc.identifier | 10.46429/jaupr.v91i1-2.2648 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/5122479 | |
| dc.description | Two simultaneous experiments were conducted at Juana Díaz and Isabela, Puerto Rico, to evaluate five chemical strategies and mechanical cultivation for weed control in bean (Phaseolus vulgaris L.) cv. Arroyo Loro established with drip irrigation. The strategies were 1) trifluralin (0.75 kg/ha) preplant incorporated (PPI), followed by (fb) bentazon (0.75 kg/ha) and sethoxydim (0.37 kg/ha) postemergence (POST); 2) bentazon (0.75 kg/ha) POST fb sethoxydim (0.37 kg/ha) POST; 3) metolachlor (2.80 kg/ha) preemergence (PRE) fb bentazon (0.75 kg/ha) and sethoxydim (0.37 kg/ha) POST; 4) imazethapyr (0.06 kg/ha) PRE fb bentazon (0.75 kg/ha) and sethoxydim (0.37 kg/ha) POST; 5) trifluralin (0.75 kg/ha) PPI; and 6) mechanical cultivation. All plots were mechanically cultivated, including those of treatment number six, at four weeks after planting (WAP). Drip irrigation was applied three times per week until two weeks before the harvest of dry beans. Metolachlor PRE fb bentazon POST caused 40% phytotoxicity to bean, significant (P < 0.05) at 3 WAP; phytotoxicity declined to 6% at 6 WAP in Juana Díaz. At Isabela, bentazon POST, imazethapyr PRE fb bentazon POST and metolachlor PRE fb bentazon POST caused 20% phytotoxicity in bean at 3 WAP, which declined to less than 8% at 6 WAP. Trifluralin PSI alone or fb bentazon POST and metolachlor PRE fb bentazon POST reduced density of broadleaves in Juana Díaz by 71, 95 and 55%, respectively, compared with the density of broadleaves in non-treated plots at 3 WAP. At 6 WAP, trifluralin PSI fb bentazon and sethoxydim POST and metolachlor PRE fb bentazon and sethoxydim POST reduced density of grasses by 85% and 94%, respectively. Trifluralin PSI, imazethapyr PRE, and metolachlor PRE, all combined with bentazon and sethoxydim POST, as well as trifluralin PSI alone, reduced density of broadleaves in Isabela at 3 WAP by 80%, 53%, 61% and 76%, respectively. The strategy of trifluralin PSI fb bentazon and sethoxydim POST improved yield of green-shelled beans in Isabela, with a 68% increase over yield with mechanical cultivation. This strategy also improved yield of dry beans in Juana Díaz, with a 55% increase. All chemical strategies, except bentazon fb sethoxydim POST, increased yield of dry beans in Juana Díaz, compared with that of mechanical cultivation. The results obtained confirm the efficacy of chemical strategies based on trifluralin PPI, metolachlor or imazethapyr PRE, either alone or followed by bentazon and sethoxydim POST for the control of weeds in beans with drip irrigation. | en-US |
| dc.description | Dos experimentos simultáneos se realizaron en Juana Díaz e Isabela, Puerto Rico, para evaluar cinco estrategias químicas y el cultivo mecánico en el control de malezas en habichuela (Phaseolus vulgaris L.) cv. Arroyo Loro establecida bajo riego por goteo. Las estrategias fueron 1) trifluralin (0.75 kg/ha) presiembra incorporado (PSI), seguido de (sd) bentazon (0.75 kg/ha) y sethoxydim (0.37 kg/ha) postemergente (POST); 2) bentazon (0.75 kg/ha) POST sd sethoxydim (0.37 kg/ha) POST; 3) metolachlor (2.80 kg/ha) preemergente (PRE) sd bentazon (0.75 kg/ha) y sethoxydim (0.37 kg/ha) POST; 4) imazethapyr (0.06 kg/ha) PRE sd bentazon (0.75 kg/ha) y sethoxydim (0.37 kg/ha) POST; 5) trifluralin (0.75 kg/ha) PSI; y 6) cultivo mecánico. El cultivo mecánico se efectuó en todas las parcelas cuatro semanas después de la siembra (SDS). El riego por goteo se aplicó tres veces por semana hasta dos semanas antes de la cosecha de habichuelas secas. El metolachlor PRE sd bentazon POST causó 40% de fitotoxicidad a la habichuela en Juana Díaz, siendo el efecto significativo (P < 0.05) a las 3 SDS, y disminuyendo a 6% a las 6 SDS. Bentazon POST, imazethapyr PRE sd bentazon POST y metolachlor PRE sd bentazon POST causaron 20% de fitotoxicidad a las 3 SDS en Isabela, disminuyendo a menos de 8% a las 6 SDS. En Juana Díaz, trifluralin PSI solo o sd bentazon POST y metolachlor PRE sd bentazon POST redujeron la densidad de malezas de hoja ancha a las 3 SDS en 71, 95 y 55%, respectivamente, comparado con las parcelas no tratadas. A las 6 SDS, trifluralin PSI sd bentazon y sethoxydim POST y metolachlor PRE sd bentazon y sethoxydim POST redujeron la densidad de gramíneas en 85% y 94%, respectivamente. Trifluralin PSI, imazethapyr PRE y metolachlor PRE, todos en combinación con bentazon y sethoxydim POST, al igual que trifluralin PSI solo, a las 3 SDS en Isabela, redujeron la densidad de malezas de hoja ancha en 80%, 53%, 61% y 76%, respectivamente. La estrategia de trifluralin PSI sd bentazon y sethoxydim POST aumentó (68%) el rendimiento de habichuelas verdes en Isabela comparado con el del cultivo mecánico. Trifluralin PSI sd bentazon y sethoxydim POST también mejoró el rendimiento de habichuelas secas en Juana Díaz, con 55% de aumento. Todas las estrategias químicas, excepto bentazon sd sethoxydim POST, aumentaron el rendimiento de habichuelas secas en Isabela, comparados con el cultivo mecánico. Los resultados obtenidos confirman la efectividad de las estrategias químicas basadas en trifluralin PSI, metolachlor o imazethapyr PRE, cualquiera de éstos solo o seguido por bentazon y sethoxydim POST, en el combate de malezas en la habichuela con riego por goteo. | es-ES |
| dc.format | application/pdf | |
| dc.language | spa | |
| dc.publisher | University of Puerto Rico Mayagüez Campus Agricultural Experiment Station | en-US |
| dc.relation | https://revistas.upr.edu/index.php/jaupr/article/view/2648/2231 | |
| dc.rights | Derechos de autor 2016 Journal of Agriculture of the University of Puerto Rico. | es-ES |
| dc.source | The Journal of Agriculture of the University of Puerto Rico; Vol. 91 No. 1-2 (2007): Vol. 91, No. 1-2, January - April 2007; 1-10 | en-US |
| dc.source | Journal of Agriculture of the University of Puerto Rico; Vol. 91 Núm. 1-2 (2007): Vol. 91, No. 1-2, January - April 2007; 1-10 | es-ES |
| dc.source | 2308-1759 | |
| dc.source | 0041-994X | |
| dc.source | 10.46429/jaupr.v91i1-2 | |
| dc.subject | Bentazon | en-US |
| dc.subject | Metolachlor | en-US |
| dc.subject | Imazethapyr | en-US |
| dc.subject | Sethoxydim | en-US |
| dc.subject | Trifluralin | en-US |
| dc.subject | Weed control | en-US |
| dc.subject | Beans | en-US |
| dc.subject | Microirrigation--Puerto Rico | en-US |
| dc.subject | Irrigation--Puerto Rico | en-US |
| dc.subject | Beans--Weed control--Puerto Rico | en-US |
| dc.subject | Farm mechanization | en-US |
| dc.title | Chemical weed management strategies in bean (Phaseolus vulgaris L.)under drip irrigation | en-US |
| dc.title | Estrategias químicas de manejo de malezas en la habichuela (Phaseolus vulgaris L.) con riego por goteo | es-ES |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion |