After harvesting, bananas ripen in three to five days. Ripening occurs during long-distance transportation and export, resulting in significant post-harvest losses. Vacuum packing is one of the methods for delaying the ripening of fruits, in which mature banana hands are bagged and kept from coming into touch with air/oxygen. Bananas can be vacuum packed using a basic vacuum packaging device. This can postpone ripening for up to 21 days, and ripening can be completed within one week of opening the package.
Scientific Farming
What causes blackening of rose petals?
Low temperature and high anthocyanin content causes blackening of rose petals. Anthocyanin buildup in Baccara rose petals is caused by GA3 treatment. At low temperatures (20°C during the day and 4°C at night), this effect was more evident than at higher temperatures (30°C during the day and 20°C at night).
What is blind wood of rose ?
A greenhouse rose’s regular flowering stalk has fully grown sepals, petals, and reproductive organs. The apical end of the stem failing to form a flower is a regular occurrence. Blind wood refers to these types of shoots. The reproductive components are absent or aborted, while the sepals and petals are there. Blind wood is usually short and thin, but when it grows at the top of the plant, it can grow to be rather long and thick. Low temperatures, insufficient light, chemical residues, insects, pests, fungal infections, and other factors can all contribute to this.
How plastic films helps in suppressing weed growth ?
Black plastic film does not allow the sunlight to pass through on to the soil. Photosynthesis does not take place in the absence of sunlight below black film. Hence, it arrests weed growth.
What are the advantages of plastic mulching ?
Plastic mulching is completely impermeable to water. It conserves moisture by preventing direct evaporation of moisture from soil. By evaporation suppression, it prevents the rise of water containing salts. Mulch can facilitate fertilizer placement and reduce the loss of plant nutrient through leaching. Mulches can also provide a barrier to soil pathogens. Opaque mulches prevent germination of annual weeds from receiving light. Reflective mulches will repel certain insects.
How post harvest handling is done in hybrid rose ?
After harvesting, immediately place roses in a bucket of water inside the polyhouse and transport to cold storage (2-4°C). The length of time depends on the roses’ variety and quality. The length of the flowers is used to classify them. It ranges in length from 40 to 70 cm, depending on the variety, and is packaged in tens or twelves per bunch.
What is paired row technique ?
Paired row technique is growing crop on both side of the furrow. This is done by increasing the ridge spacing . Thus , a single furrow can be used for irrigating two rows. This method of irrigation has been experimented for crops like greengram, blackgram, groundnut and sunflower. The results showed that there was saving of about 20 % irrigation water and 15 % increase in crop yields.
How high relative humidity affects plants ?
Very high relative humidity reduces evapotranspiration, increases heat load of plants and results in stomatal closure. It causes reduced CO2 uptake and reduced transpiration influences translocation of food materials and nutrients. Moderately high RH of 60-70% is beneficial. Low RH increases the evapotranspiration
What are the effect of relative humidity on crop ?
Relative humidity (RH) has a direct impact on plant water relations and has an indirect impact on leaf growth, photosynthesis, pollination, disease occurrence, and, ultimately, economic production. Because there is less transpiration when the humidity is low, the turgor pressure is high. As a result, leaf elongation is common in humid environments. RH has an indirect effect on photosynthesis. When the relative humidity (RH) is low, transpiration rises, resulting in water deficiencies in the plant. Many crops benefit from moderately low air humidity, as long as the soil moisture supply is adequate. Insect pests and diseases are more common in high-humidity environments.
What is suction method of emasculation in flowers ?
It’s ideal for small-flowered species. Emasculation is performed in the morning, as soon as the petals open. The anthers are sucked off the blooms using a thin rubber or glass tube coupled to a suction hose. The quantity of suction employed is critical, since it must be enough to suction pollen and anthers but not gynoecium.10% self-pollination is likely to occur in this manner. Although washing the stigma with a jet of water may assist to reduce self-pollination, this procedure does not completely eliminate it.