Investigation of possibility for reducing of kinnow mandarin alternate bearing with pruning and girdling in jirof.
2014
Ahmadpoor, Ahmad | Ghasemi, Malek | Zarghamy, Mohammad Ali | Hayat bakhshm Enayat | Bedrood, Ali | Nematolahi, Siroos
Kinnow mandarin is one of the middle mature variety for citrus orchards in jiroft and kahnooj area. However ,kinnow mandarin is a storing tendency to alter bearing and not so regular fruiting variety in successive years. the main concern of gardener and exporters and the economy has led to consumers. Alternate bearing in citrus and floral buds are not formed in low yield ( off ) occurs due to several factors. This factors into two groups , within the plant (root starvation , low carbohydrate , impaired hormone balance and disturb the C/N) and external factors (soil and environmental stresses , thermal stresses ) named. The problem alternate bearing used in horticultural practices and balanced nutrition can be overcome to some extent. In this experiment , the effect of pruning in reducing of alter bearing kinnow mandarin is studied. The randomized complete block design with five treatments including :1- low spring pruning 2-sever spring pruning 3- girdling 4- girdling and low spring pruning 5- girdling and sever spring pruning . two trees in each plot of each treatment considered in three replicated on total 30 trees of spring 2007 was conducted. The years 2007 and 2009 fruit on and 2008 and 2010 fruit OFF have been. The treatments were conducted in during fruit ON years. However the measured traits ( yield , fruit weight , fruit length and diameter, TSS, TA, TSS/TA and vitamin c ) ever four years. Analytical results of combined analysis two years OFF and ON showed : the effects of treatments all traits were significant in p 1% . Keywords: Citrus , flowering , alternate bearing , pruning , girdling , yield amount , fruit size , photo effective , jiroft
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