Evaluating sustainability of yield and fruit quality of sweet oranges with use of controlled release fertilizer and micronutrients

Evaluating sustainability of yield and fruit quality of sweet oranges with use of controlled release fertilizer and micronutrients

Report Date: 04/15/2019
Project: 18-061C   Year: 2019
Category: Horticultural & Management
Author: Tript Vashisth
Sponsor: Citrus Research and Development Foundation

This project is an continuation of an objective of existing CRDF funded project (# 00124558 ;�ending in March 2019) with some added treatments to be evaluated. The added treatments are:1.� � � � �CRF + Tiger Micronutrients+ Mn 50%2.� � � � �CRF + Tiger Micronutrients+ Zn 50%3.� � � � �CRF + Tiger Micronutrients+ Fe 50%4.� � � � �CRF + Tiger Micronutrients+ B 50%5.� � � � �CRF + Tiger Micronutrients+ Mn +Zn 20%6.� � � � �CRF + Tiger Micronutrients+ Mn +Fe 20%7.� � � � �CRF + Tiger Micronutrients+ Zn +Fe 20%8.� � � � �CRF + Tiger Micronutrients+ Zn +B� 20%9.� � � � �CRF + Tiger Micronutrients+ Fe + B 20%10.� � � � �CRF + Tiger Micronutrients+ Mn +Zn 50%11.� � � � �CRF + Tiger Micronutrients+ Mn +Fe 50%12.� � � � �CRF + Tiger Micronutrients+ Zn +Fe 50%13.� � � � �CRF + Tiger Micronutrients+ Zn +B� 50%14.� � � � �CRF + Tiger Micronutrients+ Fe + B 50%The treatment for objective 3: 1.CRF + Foliar Micronutrients + Tiger 90; 2.CRF + Tiger Micronutrients�These treatments will be initiated one the block that was being used for hybrid fertilizer trial (comparison of different rate of controlled nitrogen). This treatment willend with harvest in spring 2019.�In time duration, December-February, we have surveyed the site, ‘valencia’ on swingle between 11-15 year, set up an experimental layout for the newly added treatments,� collected pre-treatment data on tree growth, leaf and soil nutrient analysis. The fertiizer application will be made in spring 2019. after harvest of the existing trial.�We have also solicited fertilizer donation from Harrell’s and TIger Sul.


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