Marcha de absorção de macronutrientes e acúmulo de matéria seca para o meloeiro fertirrigado.

Abstract

Information about behavior of absorption of macronutrients by melon crop are crucial in planning the installment of the amounts of fertilizer to be applied. It takes more regionalized studies that suited the nutritional requirements of the yellow melon under local production conditions, taking into account soil and climatic characteristics. The objective was to evaluate the absorption of macronutrients gears and dry matter accumulation by melon crop cultivated under fertigation in Açu, Apodi microregion in the state of Rio Grande do Norte. The experiment was conducted between July and September 2015, in a randomized block design with mne treatments and four replications. The treatments mne seasons collection and evaluation, in weekly intervals, from 14 to 70 days after transplanting. They evaluated the accumulation of dry matter and macronutrients for each evaluation period. The macronutrient extraction curves followed the pattern of dry matter accumulation behavior for yellow melon 'FI Goldex' fertirrigated. The order of accumulation of macronutrients was: K> Ca> N> Mg> S> P