S203 : Effects of humic acid, calcium and boron, kaolin and water stress on fruit cracking, quality and quantity of pomegranate fruits (Punica granatum)
Thesis > Central Library of Shahrood University > Agricultural Engineering > MSc > 2015
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Abstarct: One of the main problems in the cultivation of pomegranate fruit (Punica granatum) is phonemenon fruit cracking during fruit ripening. This study is aimed to investigate the effect of Humic acid, Kaolin, Calcium, Boron and regulated irrigation on cracking, quality and quantity of pomegranate fruit. This research was carried out by compound split factorial experiments on the baxse of complete randomized block design (CRBD) in three replication on two consecutive years.
The treatment consist of humic acid at two concentration 2, 5 ml/l, kaolin at 6%, calcium at 3% and boron at 1% were apllied on branch and fruit followed by two monthly replication. Irrigation was applied as another treatment at two level, 7 and 14 days, at two week before first application. Result indicated that application of kaolin 6% at 1.26% had the lowest cracking in total cracking and kaolin 6% with calcium 3% and boron at 1% at 1.16%, humic acid 2ml/l at 1.24% and humic acid at 5 ml/l at 1.19% had lowest cracking in September that the most important time of injuri to the crop. As well the result of cracking percent showed irrigation with 14 days was increased cracking pomegranate fruit. The result of measurement quality and quantity propose showed foliar application treatment either singly or in combination to each other was significant difference compared with the control (p≤0.05).
Application of humic acid 5ml/l and kaolin 6% concentration showed significant increased in TSS and TSS/TA. As a conclution, the treatment are effective treatment for reducing cracking and increasing fruit quality in pomegranate fruit.
Keywords:
#Punica granatum #Cracking #Humic acid #Kaolin #Calcium #Irrigatio
Keeping place: Central Library of Shahrood University
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Keeping place: Central Library of Shahrood University
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