The cultivation of sweet cherries in facilities is serious, fruit set-up rate is low, and fruit cracking is serious. The reasons are many.
(1) The lack of auxin in poorly pollinated or unfertilized young fruit, the seeds cannot develop normally, and fall off more than 3-5 days after falling.
(2) Insufficient nutrients in the tree reserve, nutrient depletion after flowering, nutrients needed for fruit development are insufficient, and a large number of young fruit do not receive sufficient nutrition, and fruit development is hindered, causing a large number of physiological fruit drop. Physiological fruit drop occurred more than 5-10 days after falling.
(3) Cultivation of sweet cherries under open conditions into the hard core development stage, soil temperature at 5-20 centimeters during the day can be increased to about 25 degrees Celsius, the night temperature can reach about 20 degrees Celsius, the root system enters the rapid growth stage, sucking fertilizers have strong water absorption capacity, and can meet The demand for water and fertilizer in the development of fruit on the ground, so the fruit drop phenomenon generally occurs less frequently during this period. For facilities to cultivate sweet cherries, the soil temperature is generally between 15-18°C during the daytime at 10 cm in the facility, and the soil temperature is generally 14-16°C at night at 10 cm, and the soil temperature is lower at 20-30 cm, even if it enters hard In the nuclear period, the ground temperature is still significantly lower than the soil temperature under open field conditions. Root development is delayed, new roots do not occur, and water absorption capacity is weak. It is difficult to meet the demand for water and fertilizer for fruit development during this period, and nutrition competition is fierce, so it is prone to hard. Nuclear fruit drop phenomenon.
Precaution:
(1) The bees in the facilities during flowering stage promoted pollination and fertilization to reduce the phenomenon of fruit drop after flowering.
(2) Carefully pruning the appropriate amount of flowers to prevent excessive flowering, large flowering, and a lot of nutrient reserve, resulting in a large number of physiological fruit drop.
(3) Spray “Tianda 2116†+ borax solution 5 days before flowering to activate cell viability, promote pollen tube development, and increase fruit setting rate. 7 days after flowering, “Tianda 2116â€+ brown sugar solution was sprayed to increase photosynthetic function and directly supplement sugar, improve nutrient level in young fruit development period, promote young fruit and leaf development, and reduce occurrence of physiological fruit drop.
(4) High-ridge cultivation is carried out to increase the soil temperature with full-surface cover film, increase the thickness of hot soil layer, promote the development of root system, increase the water absorption capacity of root absorption fertilizer, and reduce the occurrence of fruit drop.
(5) The rapid expansion of young fruit soil application of organic fertilizer in the ditch to release heat, will increase soil temperature, promote root development, improve the tree nutrient levels, reduce fruit drop phenomenon.
High dispersing efficiency, good dispersing effect to difficultly dispersing imidacloprid, pymetrozine
(1) The lack of auxin in poorly pollinated or unfertilized young fruit, the seeds cannot develop normally, and fall off more than 3-5 days after falling.
(2) Insufficient nutrients in the tree reserve, nutrient depletion after flowering, nutrients needed for fruit development are insufficient, and a large number of young fruit do not receive sufficient nutrition, and fruit development is hindered, causing a large number of physiological fruit drop. Physiological fruit drop occurred more than 5-10 days after falling.
(3) Cultivation of sweet cherries under open conditions into the hard core development stage, soil temperature at 5-20 centimeters during the day can be increased to about 25 degrees Celsius, the night temperature can reach about 20 degrees Celsius, the root system enters the rapid growth stage, sucking fertilizers have strong water absorption capacity, and can meet The demand for water and fertilizer in the development of fruit on the ground, so the fruit drop phenomenon generally occurs less frequently during this period. For facilities to cultivate sweet cherries, the soil temperature is generally between 15-18°C during the daytime at 10 cm in the facility, and the soil temperature is generally 14-16°C at night at 10 cm, and the soil temperature is lower at 20-30 cm, even if it enters hard In the nuclear period, the ground temperature is still significantly lower than the soil temperature under open field conditions. Root development is delayed, new roots do not occur, and water absorption capacity is weak. It is difficult to meet the demand for water and fertilizer for fruit development during this period, and nutrition competition is fierce, so it is prone to hard. Nuclear fruit drop phenomenon.
Precaution:
(1) The bees in the facilities during flowering stage promoted pollination and fertilization to reduce the phenomenon of fruit drop after flowering.
(2) Carefully pruning the appropriate amount of flowers to prevent excessive flowering, large flowering, and a lot of nutrient reserve, resulting in a large number of physiological fruit drop.
(3) Spray “Tianda 2116†+ borax solution 5 days before flowering to activate cell viability, promote pollen tube development, and increase fruit setting rate. 7 days after flowering, “Tianda 2116â€+ brown sugar solution was sprayed to increase photosynthetic function and directly supplement sugar, improve nutrient level in young fruit development period, promote young fruit and leaf development, and reduce occurrence of physiological fruit drop.
(4) High-ridge cultivation is carried out to increase the soil temperature with full-surface cover film, increase the thickness of hot soil layer, promote the development of root system, increase the water absorption capacity of root absorption fertilizer, and reduce the occurrence of fruit drop.
(5) The rapid expansion of young fruit soil application of organic fertilizer in the ditch to release heat, will increase soil temperature, promote root development, improve the tree nutrient levels, reduce fruit drop phenomenon.
Dispersing Agent TIS-387
This is a universal EW SC polycarboxylate dispersing agent. It is composed of strong hydrophobic skeleton of the long chain and hydrophilic anionic groups formed by grafting copolymer structure with the characteristics of the polymer compounds.
Good versatility, widely used in a variety of EW and SC formulations, with good anti-hard water, viscosity reduction, stable performance.High dispersing efficiency, good dispersing effect to difficultly dispersing imidacloprid, pymetrozine
Dispersing Agent
Dispersing Agent,Agricultural Dispersant,Viscosity Reduction Dispersant,Wetting Dispersing Agent
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