Respuesta del arroz (Oryza sativa.) a diferentes alternativas de fertilización en un suelo bajo, sujeto a inundación temporal, en el Cantón Mocache.
Rice is the most important cereal in the world because it constitutes the staple food for more than half of the planet population. The objective of this research is to identify the productive performance of rice against mineral fertilization in a low soil subject to temporary flooding. In the rainy...
-д хадгалсан:
| Үндсэн зохиолч: | |
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| Формат: | bachelorThesis |
| Хэл сонгох: | spa |
| Хэвлэсэн: |
2019
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| Нөхцлүүд: | |
| Онлайн хандалт: | http://repositorio.uteq.edu.ec/handle/43000/3844 |
| Шошгууд: |
Шошго нэмэх
Шошго байхгүй, Энэхүү баримтыг шошголох эхний хүн болох!
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Шошго нэмэх | Тойм: | Rice is the most important cereal in the world because it constitutes the staple food for more than half of the planet population. The objective of this research is to identify the productive performance of rice against mineral fertilization in a low soil subject to temporary flooding. In the rainy season of 2019, a field investigation was conducted to assess the effect of fertilization on rice at a farm in the Mocache area. As part of a natural drainage channel crossing the area a land of 0.2 ha subjected to temporary flooding was planted to rice for a small farmer`s family consumption. Once crop`s rows were visible, 12 m2 plots were delimited to assign different fertilization alternatives following a Completely Random Design: 1) Absolute control, 2) Farmer`s fertilization practice, 3) Fertilization with nitrogen (N), 4) Fertilization with nitrogen (N), phosphorus (P), 5) Fertilization with nitrogen (N), phosphorus (P), potassium (K). The following response variables were recorded: plant height, number of tillers / m2, panicle length, number of panicles / m2, grain length, weight of 1000 seeds and paddy rice yield. Fertilization increased growth and productivity, causing significant yield gaps when comparing NPK treatment with less balanced alternatives. Farmer`s fertilization practice did not increase yield therefore he had 4021,31 kg ha -1 and resources were wasted. A modest yield increase came from doubling the rate of N with 4496,72 kg ha -1; however, no increase was obtained when was applied NP arriving to 4595,69 kg ha -1. Fertilization with NPK maximized yield getting 5179,03 kg ha -1, distancing itself statistically from the remaining treatments. Our results suggest an acute crop nutritional imbalance confirmed by soil analysis low K availability as well as an unbalance with Ca and Mg. Many years of rice cropping omitting K from the fertilization practice apparently exhausted K soil content. Keywords: Rice variety, behavior, yield. |
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