31 research outputs found
Rooting and vegetative growth of hardwood cuttings of 12 pomegranate (\u3ci\u3ePunica granatum\u3c/i\u3e L.) cultivars
Commercial pomegranate production area has increased substantially in the western hemisphere due to increased consumer interest in the fruit. Low nursery inventory has caused many growers to propagate vegetatively their own trees and the availability of only a few cultivars is believed to have played a role in a lack of diversity in the developing market. âWonderful,â the industry standard for pomegranate in several countries, has been propagated in the United States for over 100 years, yet there is limited scientific information regarding how to most effectively propagate âWonderfulâ and other important cultivars. This research included two experiments. Experiment 1 evaluated rooting percentages and vegetative growth attributes of hardwood cuttings of twelve cultivars (âAmbrosia,â âDesertnyi,â âEversweet,â âGolden Globe,â âGreen Globe,â âHaku Botan,â âKi Zakuro,â âLoffani,â âNochi Shibori,â âParfianka,â âPhoenicia,â and âWonderfulâ) utilizing a basal dip in a gel formulation of 3 g·Lâ1 indole-3-butyric acid (IBA). Experiment 2 evaluated auxin treatments which consisted of basal dip in water only (control) or a gel formulation of IBA (1.5 g Lâ1 or 3 g Lâ1) for hardwood cuttings of âWonderfulâ and two cultivars that rooted poorly in Experiment 1: âAmbrosiaâ and âGreen Globe.â Measured response attributes included rooting success percentages, dry root mass, leaf area, plant height, number of shoots, apical shoot growth, total shoot length, branching, stem diameter, and relative chlorophyll content (SPAD value). âWonderfulâ and nine other cultivars rooted over 84% of the time using cuttings treated with 3 g Lâ1 IBA. Differences in plant height and branching could be detected early in production. The effect of IBA concentration on rooting percentage and growth attributes varied among cultivars. Cuttings of âAmbrosiaâ rooted best with 3 g Lâ1 IBA versus 0 and 1.5 g Lâ1 IBA, whereas rooting of cuttings of âGreen Globeâ was similar among IBA rates. Plants of âWonderfulâ had significantly greater leaf area compared to those of âAmbrosiaâ and âGreen Globe.â Stem diameter had no effect on rooting on any cultivar in either experiment. There were significant differences among cultivars in terms of chlorophyll content, with âHaku Botanâ and âLoffaniâ having greener leaves than âEversweet,â âAmbrosia,â and âDesertnyi.
Fabrication and characterization of free-standing thick-film piezoelectric cantilevers for energy harvesting
Normas preliminares DRIS desarrolladas para caña de azĂșcar a partir de un bajo nĂșmero de muestras
Rooting and vegetative growth of hardwood cuttings of 12 pomegranate (\u3ci\u3ePunica granatum\u3c/i\u3e L.) cultivars
Commercial pomegranate production area has increased substantially in the western hemisphere due to increased consumer interest in the fruit. Low nursery inventory has caused many growers to propagate vegetatively their own trees and the availability of only a few cultivars is believed to have played a role in a lack of diversity in the developing market. âWonderful,â the industry standard for pomegranate in several countries, has been propagated in the United States for over 100 years, yet there is limited scientific information regarding how to most effectively propagate âWonderfulâ and other important cultivars. This research included two experiments. Experiment 1 evaluated rooting percentages and vegetative growth attributes of hardwood cuttings of twelve cultivars (âAmbrosia,â âDesertnyi,â âEversweet,â âGolden Globe,â âGreen Globe,â âHaku Botan,â âKi Zakuro,â âLoffani,â âNochi Shibori,â âParfianka,â âPhoenicia,â and âWonderfulâ) utilizing a basal dip in a gel formulation of 3 g·Lâ1 indole-3-butyric acid (IBA). Experiment 2 evaluated auxin treatments which consisted of basal dip in water only (control) or a gel formulation of IBA (1.5 g Lâ1 or 3 g Lâ1) for hardwood cuttings of âWonderfulâ and two cultivars that rooted poorly in Experiment 1: âAmbrosiaâ and âGreen Globe.â Measured response attributes included rooting success percentages, dry root mass, leaf area, plant height, number of shoots, apical shoot growth, total shoot length, branching, stem diameter, and relative chlorophyll content (SPAD value). âWonderfulâ and nine other cultivars rooted over 84% of the time using cuttings treated with 3 g Lâ1 IBA. Differences in plant height and branching could be detected early in production. The effect of IBA concentration on rooting percentage and growth attributes varied among cultivars. Cuttings of âAmbrosiaâ rooted best with 3 g Lâ1 IBA versus 0 and 1.5 g Lâ1 IBA, whereas rooting of cuttings of âGreen Globeâ was similar among IBA rates. Plants of âWonderfulâ had significantly greater leaf area compared to those of âAmbrosiaâ and âGreen Globe.â Stem diameter had no effect on rooting on any cultivar in either experiment. There were significant differences among cultivars in terms of chlorophyll content, with âHaku Botanâ and âLoffaniâ having greener leaves than âEversweet,â âAmbrosia,â and âDesertnyi.
Plant availability of magnesium and phosphorus from struvite with concurrent nitrification inhibitor application
University of California Program to Evaluate Water Quality Management Practices at Cooperating Agricultural Sites
Extension is viewed as a critical agent for addressing the water quality impacts of agriculture. To assist growers in implementing management practices (BMPs) and to assess the effectiveness of these BMPs, the University of California undertook two grant projects that assessed cooperator sites for runoff water quality and water conservation. The interdisciplinary approach was largely successful. However, factors creating challenges for quantifying BMP performance included assessing BMPs in a before-and-after manner, limited stormwater runoff, and the limited duration of the projects. Addressing these challenges may help to make similar programs more effective