A greenhouse study was conducted from October 2019 to July 2021 at the Citrus Research and Educat... more A greenhouse study was conducted from October 2019 to July 2021 at the Citrus Research and Education Center (CREC) in Lake Alfred, FL. The objective was to assess the impact of deficit irrigation on tree growth, soil water availability, stem water potential (SWP), sap flow and root growth of 2- to 4-year-old Huanglongbing (HLB)-affected ‘Valencia’ (Citrus sinensis) orange trees on ‘Kuharske citrange’ rootstock (Citrus sinensis x Poncirus trifoliata) using evapotranspiration (ET)-based irrigation schedule. A total of 20 trees were either HLB-positive or non-HLB affected and one-half of the trees was subjected to deficit irrigation (80% ET) and the other half to full irrigation (100% ET). For HLB-affected trees irrigated at 80% ET and 100% ET, there was no significant difference for tree height in both years. In general, there was no difference for SWP between the HLB-affected trees subjected to deficit irrigation and full irrigation. Non-HLB trees subjected to 100% ET and 80% ET had ...
Essential nutrients for citrus [‘Bingo’ (Citrus reticulata, Blanco)] production are important for... more Essential nutrients for citrus [‘Bingo’ (Citrus reticulata, Blanco)] production are important for different functions, including photosynthesis, resistance to disease, and productivity. During the past 15 to 20 years, citrus production in Florida has significantly declined as a result of the devastating citrus greening disease also called huanglongbing (HLB). Therefore, a greenhouse study was conducted for 2 years, starting in 2018, at the University of Florida/Institute of Food and Agricultural Sciences Citrus Research and Education Center in Florida to evaluate the effect of varying rates of iron on the growth and development of 2-year-old HLB-affected ‘Bingo’ (Citrus reticulata, Blanco) trees on Kuharske citrange rootstock. Four treatments were used in a randomized complete block (HLB status) design with seven single tree replicates for each treatment. The treatments applied were 0.0 (control), 5.6 (standard fertilization, lx), 11.2 (2x), and 22.4 (4x) kg⋅ha−1 iron on HLB-affecte...
Improving nutrient uptake and tree health play an important role in managing Huanglongbing (HLB)-... more Improving nutrient uptake and tree health play an important role in managing Huanglongbing (HLB)-affected citrus trees in Florida. A greenhouse experiment was conducted to evaluate the effect of increasing rates of manganese (Mn) on growth and development of sweet orange [Citrus sinensis (L.) Osbeck] trees at the University of Florida’s Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center in Lake Alfred, FL. Half the trees were graft-inoculated with the HLB pathogen and the remainder were used as the HLB-free (non HLB) control trees. Four rates of Mn (0.0 kg·ha−1 Mn (Control), 5.6 kg·ha−1 Mn (1x—standard rate), 11.2 kg·ha−1 Mn (2x—standard rate), and 22.4 kg·ha−1 Mn (4x—standard rate) were split applied quarterly to both sets of the trees in a completely randomized design. There were seven single tree replicates for each treatment. Response variables measured were trunk diameter, tree height, leaf Mn concentration, plus above- and belowground bi...
A greenhouse study was conducted from October 2019 to July 2021 at the Citrus Research and Educat... more A greenhouse study was conducted from October 2019 to July 2021 at the Citrus Research and Education Center (CREC) in Lake Alfred, FL. The objective was to assess the impact of deficit irrigation on tree growth, soil water availability, stem water potential (SWP), sap flow and root growth of 2- to 4-year-old Huanglongbing (HLB)-affected ‘Valencia’ (Citrus sinensis) orange trees on ‘Kuharske citrange’ rootstock (Citrus sinensis x Poncirus trifoliata) using evapotranspiration (ET)-based irrigation schedule. A total of 20 trees were either HLB-positive or non-HLB affected and one-half of the trees was subjected to deficit irrigation (80% ET) and the other half to full irrigation (100% ET). For HLB-affected trees irrigated at 80% ET and 100% ET, there was no significant difference for tree height in both years. In general, there was no difference for SWP between the HLB-affected trees subjected to deficit irrigation and full irrigation. Non-HLB trees subjected to 100% ET and 80% ET had ...
Essential nutrients for citrus [‘Bingo’ (Citrus reticulata, Blanco)] production are important for... more Essential nutrients for citrus [‘Bingo’ (Citrus reticulata, Blanco)] production are important for different functions, including photosynthesis, resistance to disease, and productivity. During the past 15 to 20 years, citrus production in Florida has significantly declined as a result of the devastating citrus greening disease also called huanglongbing (HLB). Therefore, a greenhouse study was conducted for 2 years, starting in 2018, at the University of Florida/Institute of Food and Agricultural Sciences Citrus Research and Education Center in Florida to evaluate the effect of varying rates of iron on the growth and development of 2-year-old HLB-affected ‘Bingo’ (Citrus reticulata, Blanco) trees on Kuharske citrange rootstock. Four treatments were used in a randomized complete block (HLB status) design with seven single tree replicates for each treatment. The treatments applied were 0.0 (control), 5.6 (standard fertilization, lx), 11.2 (2x), and 22.4 (4x) kg⋅ha−1 iron on HLB-affecte...
Improving nutrient uptake and tree health play an important role in managing Huanglongbing (HLB)-... more Improving nutrient uptake and tree health play an important role in managing Huanglongbing (HLB)-affected citrus trees in Florida. A greenhouse experiment was conducted to evaluate the effect of increasing rates of manganese (Mn) on growth and development of sweet orange [Citrus sinensis (L.) Osbeck] trees at the University of Florida’s Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center in Lake Alfred, FL. Half the trees were graft-inoculated with the HLB pathogen and the remainder were used as the HLB-free (non HLB) control trees. Four rates of Mn (0.0 kg·ha−1 Mn (Control), 5.6 kg·ha−1 Mn (1x—standard rate), 11.2 kg·ha−1 Mn (2x—standard rate), and 22.4 kg·ha−1 Mn (4x—standard rate) were split applied quarterly to both sets of the trees in a completely randomized design. There were seven single tree replicates for each treatment. Response variables measured were trunk diameter, tree height, leaf Mn concentration, plus above- and belowground bi...
Uploads
Papers by Samuel Kwakye