Response of growth regulators and micronutrients on yield and physico-chemical quality of Ber (Zizyphus mauritiana Lamk) cv. BAU Kul-1

Abstract

Ber (Zizyphus mauritiana Lamk.) is an indigenous delicious, nourishing fruit grown widely throughout the India but faces heavy fruit drop due to several biotic and abiotic stress factors resulted in declining trend of ber production over the year. Keeping these facts in foreground, replicated field experiment was conducted during 2013-14 and 2014-15 at HRS, Mondouri, BCKV, West Bengal with eleven treatments consist two different levels of NAA, GA 3 , 2,4-D, ZnSO 4 and H 3 BO 3 along with a control (water spray). Results of investigation revealed that application of 2,4-D @ 10 mg/l recorded highest fruit set (48.80%). Maximum fruit retention (42.83%) and total no. of fruits/tree (514) were obtained with the application of NAA @ 20 mg/l. Application of GA 3 @ 20 mg/l recorded significantly (p≤0.05) higher yield (30.67 kg/tree), fruit weight (60.5 g), fruit length (5.8 cm), fruit breadth (5.1 cm), pulp to seed ratio (13.9) and specific gravity (1.104) as well as economic returns over control during both the year of experiment. Among the treatments H 3 BO 3 at 0.4% recorded the highest TSS (11.7°Brix), total sugar (8.33%), reducing sugar (5.21%) and TSS: Acid (107.36) ratio with lowest fruit acidity (0.10 %) whereas highest vitamin-C content of fruit was recorded with GA 3 at 20 mg/l (64.68 mg / 100 g) followed by NAA at 20 mg/l. Results suggest that twice spraying of GA 3 @ 20 mg/l and H 3 BO 3 at 0.4% is vital for optimizing yield components, yield and quality of ber (cv. BAU Kul-1) in trans-Gangetic plains of West Bengal.

Advancement and efficacy of plant growth regulators in Ber (Ziziphus mauritiana Lamk) - A review

“…Further, they have noticed that increasing concentrations of all the growth regulators caused a significant increment in the yields. Majumder et al, (2017) obtained the maximum no of fruits/tree (514) with the application of NAA @ 20 mg L -1 . Application of GA3 @ 20 mg L -1 recorded significantly higher yield (30.67 kg/tree) in ber cv.…”

“…These properties are also influenced by the status of nutrient and level of hormones in the plant. Application of growth regulators improved physicochemical attributes of ber (Majumder et al, 2017). If plant imbalances or deficit important nutrient or hormones, that directly affects on biochemical properties of fruits.…”

Study The Effect of Antioxidants on The Traits of the Fruits of Two Cultivars of Jujube (Ziziphus mauritiana Lamk.) Al-Tufahi and Alarmouti Cultivars

“…There are many growth regulators, like NAA, GA3, ethephon, ethylene and salicylic acid, which have an important role in improving the ripening of fruits and its quality (Mccellan & Chang, 2008). Growth regulators (H3BO3, NAA, GA3, 2.4-D, ZnSo4) also work to deal with the abiotic problems and biological stress by spraying jujube trees (Majumder et al, 2017). Jujube trees CV.…”

Impact of mineral nutrients on powdery mildew and quality attributes in umran ber (Ziziphus mauritiana)

“…Total sugars and reducing sugars expressed in percentage was estimated by method suggested by AOAC (2005). Ascorbic acid content was expressed in mg/100 g of pulp and was estimated using 2, 6-dichlorophenol indophenol dye by visual titration method (AOAC 2005) (2014) and Majumder et al (2017). The reason for decreased titrable acidity due to potassium application might be due to increased TSS of the fruits.…”

“…Two sprays of boric acid @0.4% during mid-October and mid-November on ber cv. BAU Kul-1 increased total soluble solids, total sugars, reducing sugars and TSS\acid ratio (Majumder 2017). Information on the effect of calcium nitrate, potassium sulphate, boric acid and liquid sulphur on enhancement of quality attributes of ber cv.…”