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EFFECT OF CALCIUM AND POTASSIUM COMPOUNDS ON VEGETATIVE GROWTH, FRUITING, YIELD AND FRUIT QUALITY OF GUAVA (Psidium guajava L.) cv. L-49

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Title EFFECT OF CALCIUM AND POTASSIUM COMPOUNDS ON VEGETATIVE GROWTH, FRUITING, YIELD AND FRUIT QUALITY OF GUAVA (Psidium guajava L.) cv. L-49
 
Creator Sanjay Kumar Vishwakarma
 
Contributor Prof. Binod Kumar Singh
 
Subject Guava, calcium and potassium compounds, vegetative growth, fruiting, yield and fruit quality
 
Description Ph. D.
The field investigation entitled, “Effect of calcium and potassium compounds on vegetative growth, fruiting, yield and fruit quality of guava (Psidium guajava L.) cv. L-49”, was conducted during Mrig Bahar of 2012 and 2013 at the Horticulture unit, Department of Horticulture, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi (U.P.). The experiment was laid out with fourteen treatments comprising of six nutrients, namely calcium chloride, calcium nitrate, calcium sulphate, potassium chloride, potassium nitrate and potassium sulphate with two concentration of each (1.0 and 1.5 %) along with water spray and control. Fresh solution of nutrients were applied as foliar application 15 days before flowering, at flowering and 15 days after flowering.
Increasing concentration of nutrients resulted in significant increase in vegetative growth in terms of stem length (cm), leaf nutrient content and leaf area (cm2) at various stages of observation. Application of calcium nitrate (1.5 %) recorded highest value during both the years. Growth attributes of guava like stem girth (cm) and number of leaves per shoot improved significantly with increasing concentration of nutrients and recorded highest value at (1.5 %) potassium nitrate during both the seasons.
Flowering and fruiting components like days to flower bud initiation, days to first flowering, number of flowers per shoot, fruit set per shoot, fruit drop per shoot, fruit retention per shoot, days to first harvest, fruit weight at maturity (g) and yield per shoot (kg) were significantly affected by different concentration of nutrients in both the seasons. Application of potassium nitrate at higher concentration (1.5 %) recorded more value for all flowering and fruiting components.
In the present investigation significant increase in physical parameter of fruits such as length of fruit (cm), diameter of fruit (cm), fruit volume (cm3) and number of seeds per fruit varied significantly under various treatments during both the years of experimentation. Potassium nitrate (1.5 %) recorded significantly higher value for most of the physical parameter of fruits during both the seasons of investigation.
Higher concentration of potassium nitrate (1.5 %) resulted in significantly higher total soluble solids, ascorbic acid, reducing sugar, non-reducing, total sugar, acidity as anhydrous citric acid and shelf life of fruits than lower concentration, while calcium nitrate (1.5 %) produced higher pectin during both the seasons of investigation.
Economics is governed by yield and economic produce of the plant. The gross return, net return and B:C ratio was recorded higher with higher concentration of potassium nitrate (1.5 %) and followed by calcium nitrate (1.5 %) during both the years.
On the basis of two years data, it can be concluded that foliar spray of calcium nitrate and potassium nitrate at higher concentrations (1.5 %) tended to exhibit better growth, yield and quality of guava fruits.
 
Date 2016-10-25T18:01:21Z
2016-10-25T18:01:21Z
2016
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/81982
 
Language en
 
Relation P0006;
 
Format application/pdf
 
Publisher Institute of Agricultural Sciences, Banaras Hindu University