ABSTRACT The São Francisco Valley region of Brazil is a leading exporter mango fruits. Previous nutritional diagnosis can identify stresses, provide adjustments for limitations, and promote more efficient fertilization nutrient management. This study aimed to compare the trees in post-harvest pre-flowering phases correlate them with productivity. Norms indices Integrated System Diagnosis Recomm...

plant analysis is successfully used in monitoring nutritional status, recommending fertilizer rates and types, and maximizing fertilizer efficiency in sugar beet. diagnosis and recommendation integrated system (dris) is a comprehensive approach which does not have limitations of the critical value approach (cva) and sufficiency range approach (sra). over- dose application of fertilizer increase...

Tomato is an important field crop, and nutritional imbalances frequently reduce its yield. Diagnosis Recommendation Integrated System (DRIS), uses ratios for nutrient deficiency diagnosis instead of absolute concentration in plant tests. In this study, local DRIS norms the tomatoes were established nutrient(s) limiting yield determined. leaves analyzed nutrients, to identify status using approa...

The balance of the mineral nutrition in mango leaves during flowering period affects trees and fruit production. Because soil karst areas has a slow unbalanced supply rate nutrients, orchards area generally have low yield. There are few studies on fertilization areas, especially diagnosis leaf nutrition. In this study, typical Guangxi province, one main mango-producing China, were selected from...

The Diagnosis and Recommendation Integrated System (DRIS) is a tool to evaluate the nutritional status obtain fertilizer recommendations of several crops. Unlike other methods, DRIS works directly with farmer’s information, focusing on understanding balance crop. However, selection indexes long time-consuming. objective this work was develop an algorithm estimate reference for crops in order fa...