Effect of pruning and mechanical fruit thinning on crop load and berry and wine composition of Tempranillo in Texas

2021 ◽  
Author(s):  
Pierre Helwi ◽  
Justin Scheiner ◽  
Andreea Botezatu ◽  
Aaron Essary ◽  
Daniel Hillin
Keyword(s):  
Fungal Disease ◽  
Production Costs ◽  
Yield Reduction ◽  
Wine Quality ◽  
Crop Load ◽  
Fruit Thinning ◽  
Wine Composition ◽  
Cluster Compactness ◽  
Lower Production

Tempranillo is the second most planted variety in Texas. However, over-cropping can be an issue. Crop load can be managed by pruning and mechanical fruit thinning. Mechanizing fruit thinning provides three benefits: yield reduction, berry thinning to decrease cluster compactness and reduce fungal disease and lower production costs than fruit thinning by hand (Tardaguila et al., 2008). In this study, crop load was manipulated by pruning and mechanical fruit thinning and its effect was determined on berry and wine quality.

Interaction Between CPPU and NAA on Fruit Thinning and Fruit Development in Selected Apple Cultivars

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 513c-513 ◽  
Author(s):  
Martin J. Bukovac ◽  
Jerome Hull ◽  
John C. Neilsen ◽  
Michael Schroeder ◽  
Georg Noga
Keyword(s):  
Total Yield ◽  
Fruit Size ◽  
Frost Damage ◽  
Fruit Growth ◽  
Soluble Solids ◽  
Seed Number ◽  
Crop Load ◽  
Fruit Thinning ◽  
Carpel Development ◽  
Return Bloom

NAA is used extensively for fruit thinning of apples to increase fruit size and to promote return bloom. In some cultivars, even if thinning is achieved, fruit size at harvest may be less than expected based on crop load. CPPU, N-(2-chloro-4-pyridinyl)-N.-phenylurea, has been shown to increase fruit growth in apples, grapes, and kiwi. We evaluated combinations of NAA and CPPU on thinning, fruit growth and return bloom in Redchief `Delicious', `Elstar', and `Gloster'. CPPU was applied at 5 mgμL–1 (based on 0 to 10 mgμL–1 response curve) in combination with 15 mgμL–1 NAA as high-volume sprays at 7 to 10 mm KFD. Yield and fruit size distribution (on total yield) were used as index of response. In `Delicious', CPPU (3-year study) increased % large (70 mm+) fruit, but in the presence of NAA % large fruit was reduced 2 of the 3 years. CPPU did not induce significant thinning. There were no significant effects on color or soluble solids; firmness was increased slightly and seed number reduced. The L/D ratio was increased and uneven lobe and carpel development was common. CPPU had no significant effect on return bloom in presence or absence of NAA, but NAA increased bloom in both the presence and absence of CPPU. With `Elstar' (2-year study) there was no significant thinning with either chemical, but CPPU increased mean fruit size and % large (70–80 mm) fruit over nonthinned, but not significantly greater than NAA alone. There were no significant differences in firmness, color, soluble solids or seed number. NAA + CPPU did not inhibit fruit growth or cause excessive uneven carpel development. Frost damage reduced crop load in `Gloster' where results were similar to `Elstar' except seed number was reduced by the NAA + CPPU combination.

scholarly journals A co-cultivation process of Nannochloropsis oculata and Tisochrysis lutea induces morpho-physiological and biochemical variations potentially useful for biotechnological purposes

2021 ◽  
Author(s):  
Michele Maglie ◽  
Costanza Baldisserotto ◽  
Alessandra Guerrini ◽  
Alessandra Sabia ◽  
Lorenzo Ferroni ◽  
...  
Keyword(s):  
Lipid Production ◽  
Maximum Yield ◽  
Pharmaceutical Products ◽  
Nannochloropsis Oculata ◽  
Production Costs ◽  
Yield Reduction ◽  
Total Biomass ◽  
Tisochrysis Lutea ◽  
Positive Effects ◽  
Cell Extracts

AbstractThe biotechnological potential of microalgae has gained considerable importance in many applied fields: biomass production for food and feed, cosmeceutical and pharmaceutical products, energy and phytoremediation. The driving force that inspires the progress in microalgae production is the need for new cultivation systems to obtain simultaneously the maximum yield, reduction of water and nutrients use, and production of economically interesting molecules, such as pigments, fatty acids and polysaccharides. We aim to test, for the first time, the co-cultivation in saline medium of Tisochrysis lutea (Haptophyta) and Nannochloropsis oculata (Ochrophyta) to obtain valuable compounds, i.e. pigments and lipids characteristic of each species, using a single culture process. Mono-cultures of each strain were used as controls. The two strains showed an increase in the concentration of chlorophylls and carotenoids in co-culture. At the end of the experiment, the fatty acid profile was analysed by gas chromatography–mass spectrometry. The lipids in the co-cultivated cell extracts were mainly attributable to N. oculata, which represented 97% of the total cells (ca. 83% of the total biomass) at the end of the experiment. Nevertheless, the ω-3 characteristic of T. lutea (DHA and SDA, absent in N. oculata) was also detectable. Although the co-cultivation of these two phylogenetically different species of microalgae did not show positive effects on the growth and on the total lipid production, however, this process resulted in a reduction of the production costs and a lower consumption of water and nutrients.

Tool Approach Directions for Machining Protrusion and Depression Features in an Object

1990 ◽  
Author(s):  
Chandrasekhar Karra ◽  
Thomas A. Phelps
Keyword(s):  
Product Development ◽  
Product Design ◽  
Tool Path ◽  
Low Cost ◽  
Production Costs ◽  
Competitive Market ◽  
Process Plans ◽  
Manufacturing Problems ◽  
Lower Production

Abstract The success of any industry in today’s highly competitive market is largely dependent on its ability to produce quality products, quickly and at low cost. Evaluating the effect of a product design on its manufacture is crucial in developing efficient designs. Any potential manufacturing problems detected at this stage can be corrected by modifying the design, leading to shorter product development cycles and lower production costs. This paper presents an algorithm to determine feasible tool approach directions. The algorithm is based on detecting if any part of the object obstructs the tool path. The basis for the algorithm is determining feasible approach directions and clearances around a planar polygonal face. The algorithm is applicable to both protrusions and depressions. The information is useful in performing manufacturability analysis of designs and develop process plans.

Economic performance of organic vs conventional vegetables production in Gaza strip

2014 ◽  
Vol 2 (2) ◽  
pp. 9-18
Author(s):  
Ahmed Abu Shaban
Keyword(s):  
Organic Farming ◽  
Gaza Strip ◽  
Farming System ◽  
Organic Production ◽  
Economic Feasibility ◽  
Production Costs ◽  
Economic Potential ◽  
Vegetable Crops ◽  
Gross Margin ◽  
Lower Production

Organic farming has achieved significant growth in developing countries. However, it is still in some areas such as Gaza strip at embryonic stage. Introduction and promotion of organic farming would need more information about economic feasibility of shifting from the existing conventional farms to organic farming system. This is the main aim of this study. Data was collected from 100 randomly selected farmers in southern area of Gaza strip using standard questionnaire. Additional focus group discussions were conducted for further qualitative analyses. Data was also collected from the organic farm of Safe Agriculture Association where vegetables are organically produced and marketed. Gross margin and comparative analyses were used to describe cost structure of conventional and organic production and to assess economic potentialities to shift to organic farming. Results varied among vegetable crops as some crops showed very high economic potential to shift to organic farming while other crops did not. Major reasons for crops with good potential were higher yield under organic farming, premium market prices and lower production costs. Major reasons for lower economic potential to shift were the significant lower yield and higher production costs. The study recommends further technical research to explore organic production techniques that allows for higher yield and lower production cost. The study also recommends further market research to investigate consumers' preferences and willingness to pay for organic products.

scholarly journals Simulation of Holstein and Jersey profitability by varying milk price payment system

2010 ◽  
Vol 39 (4) ◽  
pp. 913-923 ◽  
Author(s):  
Daniel de Noronha Figueiredo Vieira da Cunha ◽  
José Carlos Pereira ◽  
Oriel Fajardo de Campos ◽  
Sebastião Teixeira Gomes ◽  
José Luis Braga ◽  
...  
Keyword(s):  
Payment System ◽  
Production Costs ◽  
Farm Size ◽  
Protein Percentage ◽  
Bonus Payment ◽  
Holstein Breed ◽  
Percentage Unit ◽  
Economic Indexes ◽  
Lower Production

The objective of the study was to compare through simulation Holstein and Jersey breed herds, considering the farm size, zootechnical and economic indexes and profitability of the activity, by using different systems of bonus payment for milk price based in percentage of fat and protein in the milk. The comparisons were made, initially, disregarding the bonus payment for milk price based on the increase in the fat and protein percentage in milk. After that, the profitability of the activity was compared considering bonus payment for milk price of the Jersey breed herd, for each unit increment in fat and protein percentage in milk above those obtained with the Holstein breed herd. Finally, the profitability of the activity was compared by using the bonus payment for milk price based on quality of that used by company A systems. When there was no bonus payment for milk price based in the percentage of fat and protein in the milk, the profit obtained with the Holstein breed was higher because of the lower production costs. In order to make the activity more profitable with the Jersey breed, a bonus payment of 5% for milk price would be needed for each percentage unit of fat above the percentage of that obtained with the Holstein breed, or a bonus payment of 10% in the milk price for each percentage unit of protein above the percentage obtained with the Holstein breed. By using the bonus payment system proposed by Gimenes and Ponchio, the annual profit with the Jersey breed was higher than the profit obtained with the Holstein breed. However, with the application of the bonus payment system used by company A, the Holstein breed became more profitable than the Jersey breed.

scholarly journals Kleiber ratios and growth curves of African Black and Red Neck ostrich breeds and their crossbreeds

2021 ◽  
Vol 42 (6supl2) ◽  
pp. 4059-4072
Author(s):  
Marcos Paulo Gonçalves de Rezende ◽  
◽  
Paulo Luiz Souza Carneiro ◽  
Riccardo Moretti ◽  
Johnny Iglesias Mendes Araujo ◽  
...  
Keyword(s):  
Feed Efficiency ◽  
Growth Curves ◽  
Production Costs ◽  
Adult Weight ◽  
Kleiber Ratio ◽  
Final Weight ◽  
African Black ◽  
One Year ◽  
Lower Production ◽  
Selection Of

The selection of animals with lower production costs can be achieved by using feed efficiency and growth curve information. Kleiber ratio (KR) is an alternative option for discriminating against the animals that have the greatest weight gain about their final weight. Alternative feed efficiency and growth curves for ostriches of the African Black (AB) and Red Neck (RN) breeds and their crossbreeds (CB) were investigated using KR and Gompertz equation. Univariate and multivariate analyses were used. The highest adult weight was identified in the RN and CB. AB was more precocious than the RN and CB individuals. Only AB animals reached 75% of their mature weight at one year of age. At 180 days, AB showed better KR. AB was different from the others, mainly for KR at 90 days and 180 days. Considering multivariate analysis, AB animals were different from the others, regardless of sex, mainly for KR at 90 days and KR at 180 days. Other subgroups separated the animals by sex. In a market preferring animals of minor structure (smaller cuts) and greater precocity, it would be suitable to opt for AB. When animals with greater body structure (larger cuts) are desired, males RN and CR is the best option, however, it will be slaughtered with greater age and lower value for KR (may generate a bigger production cost ). It is possible to obtain animals with precocity and high KR, being well represented by the AB breed.

scholarly journals INOCULATION OF DIAZOTROPHIC BACTERIA AND NITROGEN FERTILIZATION IN TOPDRESSING IN IRRIGATED CORN

2016 ◽  
Vol 29 (2) ◽  
pp. 338-347 ◽  
Author(s):  
VANESSA ZIRONDI LONGHINI ◽  
WÉSLEY CARLOS ROSSINI DE SOUZA ◽  
MARCELO ANDREOTTI ◽  
NATALIA DE ÁVILA SOARES ◽  
NÍDIA RAQUEL COSTA
Keyword(s):  
Management Practices ◽  
Block Design ◽  
Crop Productivity ◽  
Production Costs ◽  
Nitrogen Fertilizers ◽  
Diazotrophic Bacteria ◽  
Corn Seed ◽  
Randomized Block Design ◽  
Lower Production ◽  
Corn Grain

ABSTRACT: Corn is a nitrogen-intensive crop, and the use of management practices such as inoculation of the seed with diazotrophic bacteria, which can maximize crop productivity and reduce the need of nitrogen fertilizers, may result in lower production costs. The present study aimed to evaluate the effect of inoculation of corn seed with Azospirillum brasilense and controlled addition of nitrogen to topdressing on the nutrition, production components, and productivity of crop grain. The experimental design was a randomized block design, with four replications in a 2 × 5 factorial scheme. The treatments consisted of inoculation or not of corn seed with A. brasilense (at 100 mL per 25 kg of seed) and five nitrogen (N) levels in topdressing (0, 30, 60, 90, and 120 kg N ha-1 from urea [45% N]) were applied when the corn was in the phenological growth stage V6. Foliar macronutrients, foliar chlorophyll index (FCI), production components, and yield of corn grain were valuated. Inoculation of corn seeds with A. brasilense increased plant height and grain yield. Fertilization in topdressing, with N levels up to 120 kg ha-1, linearly increased the foliar nutrients and productivity of corn cultivated in the spring/summer in the low-altitude Cerrado region of Brazil.

scholarly journals Economic, Agronomic, and Environmental Benefits From the Adoption of Precision Agriculture Technologies

2019 ◽  
Vol 10 (1) ◽  
pp. 40-56 ◽  
Author(s):  
Thomas Koutsos ◽  
Georgios Menexes
Keyword(s):  
Precision Agriculture ◽  
Production Efficiency ◽  
Farming System ◽  
Environmental Benefits ◽  
Production Costs ◽  
Modern Agriculture ◽  
Technology Innovations ◽  
Farm Production ◽  
Farming Efficiency ◽  
Lower Production

Precision agriculture (PA) as an integrated information- and production-based farming system is designed to delivery high-end technology solutions to increase farm production efficiency and profitability while minimizing environmental impacts on the ecosystems and the environment. PA technologies are technology innovations that incorporate recent advances in modern agriculture providing evidence for lower production costs, increased farming efficiency and reduced impacts. However, the adoption of the precision agriculture technologies has encountered difficulties such as additional application or management costs and investment on new equipment and trained employees. Some of these PA technologies were proven efficient, providing tangible benefits with lower costs and as a result they quickly gained scientific interest. To investigate further the economic, agronomic, and environmental benefits from the adoption of PA technologies a systematic review was conducted, based on the systematic search and evaluation of related eligible articles.

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