ACCUMULATION OF MACRONUTRIENTS IN CV. 'ASTRUS' CABBAGE AS INFLUENCED BY NITROGEN DOSE AND PLANT POPULATION
| Autor: | Rodrigo Hiyoshi Dalmazzo Nowaki, Rodrigo Luiz Cavarianni, Arthur Bernardes Cecílio Filho |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Chemistry chemistry.chemical_element 04 agricultural and veterinary sciences 01 natural sciences Nitrogen Plant population Transplantation Animal science Brassica oleracea var capitata 040103 agronomy & agriculture 0401 agriculture forestry and fisheries General Agricultural and Biological Sciences 010606 plant biology & botany |
| Zdroj: | Ciencia e investigación agraria. 43:13-13 |
| ISSN: | 0718-1620 |
| DOI: | 10.4067/s0718-16202016000200013 |
| Popis: | The influence of plant population (31,250 and 46,875 plants ha -1 ) and nitrogen doses (0, 100, 200, and 300 kg ha -1 ) on the accumulation of macronutrients by cabbage plants was studied in Jaboticabal, Brazil, from February 18 to June 2, 2004. The experimental design was a randomized complete block in a 2 × 4 factorial scheme, with three replications. Differences in the amount of macronutrients accumulated by cabbage as function of N dose and plant population, were observed. The largest amounts of macronutrients were detected at the end of the plant cycle when the plant population was the lowest. The amounts of N, P, K, and S were not significantly different when the N dose was increased from 100 to 300 kg ha -1 . The accumulated amounts of Ca and Mg were not significantly different when the N dose was increased from 200 to 300 kg ha -1 . The decreasing sequence of macronutrient extraction (Ca, N, K, Mg, P, and S) was not altered by the treatments. The period from 40 to 60 days after transplantation was responsible for half of the macronutrient accumulation by the cabbage plants. Con el fin de evaluar las interacciones entre las densidades de poblacion (31250 y 46875 plantas ha -1 ) y el nitrogeno (0, 100, 200 y 300 kg ha -1 ) en la acumulacion de macronutrientes en la col cv. 'Astrus', se realizo un experimento en Jaboticabal (Brasil) del 18 de febrero al 2 de junio de 2004. El diseno experimental fue de bloques al azar factorial 2 × 4 con tres repeticiones. Se observo diferencia en la cantidad de macronutrientes de la col en funcion de N y la densidad de poblacion. Se observaron las mayores cantidades al final del ciclo con la menor densidad de la siembra, pero las cantidades de N, P, K y S no fueron diferentes cuando se utilizan de 100 a 300 kg ha -1 de N. Para Ca y Mg, las cantidades no fueron diferentes cuando se fertilizo con 200 o 300 kg ha -1 de N. La secuencia descendente de extraccion de macronutrientes (Ca, N, K, Mg, P y S) no se vio afectada por los tratamientos. El periodo de 40 a 60 dias despues del trasplante fue responsable de la mitad de las cantidades acumuladas de macronutrientes en planta de la col. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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