Relaçoes entre os teores de macronutrients, boro e zinco das folhas de cafeeiro e as produçoes
Relationship among macronutrients, boron and zinc contents of coffee leaves and yield. The relationships among macronutrients, boron and zinc contents of coffee leaves and yield were studied in the Latosolic B "Terra Roxa" and Ortho-Red Yellow Latosol soils of Sao Paulo State. All nutrients were applied in the soil. Nitrogen was supplied as ammonium sulphate or nitrocalcium. The source of phosphorus was simple superphosphate; potassium in the chloride form; calcium as nitrocalcium and simple superphosphate form. Magnesium was supplied as nitrocalcium; sulphur in the ammonium sulphate and simple superphosphate form ; boron and zinc were supplied as borax and sulphate respectively. Leaf samples for chemical analysis were collected during Spring, Summer and Fall, starting in the Spring of 1965 up to the Summer of 1970. It was concluded that the nitrogen and zinc were the elements that showed the highest correlation with coffee yield
| Main Authors: | , , , , , |
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| Format: | biblioteca |
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| Subjects: | CONTENIDO DE NUTRIENTES, HOJAS, METODOS DE APLICACION, NITRATO DE CALCIO, FOSFORO, POTASIO, BORO, ZINC, SULFATO DE AMONIO, SUELOS, ANALISIS QUIMICO, PRODUCCION, FERTILIZACION, MACRONUTRIENTES, MICRONUTRIENTES, LATOSOLES, |
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| Summary: | Relationship among macronutrients, boron and zinc contents of coffee leaves and yield. The relationships among macronutrients, boron and zinc contents of coffee leaves and yield were studied in the Latosolic B "Terra Roxa" and Ortho-Red Yellow Latosol soils of Sao Paulo State. All nutrients were applied in the soil. Nitrogen was supplied as ammonium sulphate or nitrocalcium. The source of phosphorus was simple superphosphate; potassium in the chloride form; calcium as nitrocalcium and simple superphosphate form. Magnesium was supplied as nitrocalcium; sulphur in the ammonium sulphate and simple superphosphate form ; boron and zinc were supplied as borax and sulphate respectively. Leaf samples for chemical analysis were collected during Spring, Summer and Fall, starting in the Spring of 1965 up to the Summer of 1970. It was concluded that the nitrogen and zinc were the elements that showed the highest correlation with coffee yield |
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