What are the preharvest factors affecting quality?

What are the preharvest factors affecting quality?

Pre harvest factors affecting quality of the produce

  • Genetic / variety.
  • Light.
  • Temperature.
  • Humidity.
  • Mineral nutrition.
  • Water relation/ Irrigation.
  • Canopy manipulation.
  • Rainfall.

What are the factors that may affects the citrus production and quality?

The most important nutrients influencing fruit quality are nitrogen, phosphorus and potassium. However, when any other nutrient is deficient or in excess, fruit yield and quality are negatively altered. Nitrogen (N) in- creases juice content, TSS per box and per acre, and acid content.

What is preharvest factor?

Pre-harvest factors viz, environmental factors such as temperature, relative humidity, water potential, light, cultural practices and pest management techniques determined the inherent quality of the produce.

What factors affect fruit quality?

The type of root stock, the age of trees , the type of soil, cultural treatment, the kind and variety of plant, the season of harvest, etc. also influence the storage quality of the fruits to a certain degree.

What is the importance of preharvest modifiers of quality?

3 Main Reasons: to prevent or correct minor element deficiencies with nutritional sprays as part of the mineral nutrition program. to control diseases, insects and mites with pesticides.

What is pre and post-harvest?

It is widely recognized that there are several pre-harvest (genotype, growing environment, cultural practices, ripening stage, etc.) and post-harvest (harvesting, post-harvest treatments, packaging, storage, etc.)

What is HLB citrus disease?

Huanglongbing (HLB), also known as citrus greening, is the most serious disease of citrus. The disease is spread by the Asian citrus psyllid (Diaphorina citri) (ACP), which has been present in Florida since 1998. ACP transmits the bacteria to the tree when feeding on new shoots.

How is climate change affecting oranges?

They report higher prices, lower production costs and better disease resistance after shifting all or part of their farms from coffee to citrus production. They are also finding oranges to be more resilient to the droughts, floods, uneven temperatures, erratic rainfall and higher winds that climate change is bringing.

What two factors determine the quality of fresh fruit?

What two factors determine the quality of fresh fruit? Ripeness and maturity. Immature fruits have not reached full size and have poor color, flavor, and texture. Ripe fruits give slightly when pressed.

What are the factors affecting the quality of fresh produce?

The management of temperature, ventilation, and relative humidity are the three most important factors that affect postharvest quality and storage life of horticultural produce. Recommended storage temperature and relative humidity for cabbage, lettuce and carrots are 0 to 2 °C and 95 to 100% respectively.

What does preharvest in vegetable production means?

Preharvest refers to activities on the farm or ranch that occur before crop or livestock products are sold.

How do you reduce post-harvest losses?

Here, Deltsidis offers six pointers in the postharvest process that if you employ, can help you avoid suffer major losses.

  1. Assess Maturity.
  2. Check Your Water Quality.
  3. Check Your Water Temperature.
  4. Avoid Injury.
  5. Keep Your Produce Cool.
  6. Proper Storage.

What is postharvest quality?

Quality can be defined as the “fitness for the purpose.” The “optimal” quality of a product is related to a determined development or ripening degree, where the composition or combination of physical attributes and chemical components has maximum acceptance by consumers.

What causes HLB?

HLB is caused by the bacterium, Candidatus Liberibacter asiaticus. The bacteria are located in the part of the tree vascular system known as the phloem and are harmless to humans. The Asian citrus psyllid can also acquire the bacteria from an infected tree and is the vector of the disease.

How do you treat citrus HLB?

Use oxytetracycline and streptomycin in rotation. Apply aqueous dilutions to trees when new growth occurs to protect flushes of new leaves against transmission of the huanglongbing (HLB) pathogen Candidatus Liberibacter asiaticus by the Asian citrus psyllid (ACP). Retreatment interval is a minimum of 21 days.

What is the climate of citrus?

Citrus species do best in regions with an annual rainfall of 1250 to 1850 mm. As much, in arid and semi-arid areas, an adequate irrigation water supply is required for maintaining desirable soil moisture conditions.

In which climatic conditions citrus fruits are cultivated?

(v) In which climatic conditions are citrus fruits cultivated? Answer: Citrus fruits are grown in regions marked for hot, dry summers and mild rainy winters.

What is preharvest operation?

What are the factors that affect harvesting?

While the major factor determining the time of harvest is the maturity of the crop, other factors such as weather, availability of harvest equipment, pickers, packing and storage facilities, and transport are important considerations.

What factors affect the production and quality of citrus fruit?

Citrus fruit production and quality are influenced by many factors, including climatic conditions and produc- tion practices. In subtropical climates, the temperature usually falls below 70°F for several months dur- ing winter.

What factors affect the quality of fruits and vegetables at harvest?

The duration, intensity and quality of light affect the quality of fruits and vegetables at harvest. Most of the produce needs high light intensity (3000-8000 f.c.). Absorption of red light (625-700 nm) through pigments, phytochrome, is essential for carbohydrates synthesis which determines the shelf life of the produce.

What are the external and internal characteristics of citrus fruit?

In citrus fruit, external factors like fruit colour, size and texture are very important to check the quality of the fruit, while internal characters include seediness, vitamin C contents, amount and quality of juice, TSS, TSS:TA ratio and titratable acidity (TA) (Ahmad et al., 2006).

What influences Asa content in citrus fruits?

The literature reviewed in this study showed that the content of AsA in citrus fruits is influenced by numerous preharvest factors including genotype, cultural practices, climatic conditions, fruit maturity and postharvest management.