Please use this identifier to cite or link to this item: http://prr.hec.gov.pk/jspui/handle/123456789/16492
Title: Productivity enhancement of date palm (Phoenix dactylifera L.) through improved cultural techniques in Dera Ismail Khan region
Authors: Aslam, Muhammad
Keywords: Agriculture and Veterinary Sciences
Horticulture
Issue Date: 2020
Publisher: Gomal University, D.I.Khan.
Abstract: To meet the challenges of food security, there is a need to increase the yield of date palm using new, innovative, sustainable and inexpensive agronomic techniques as. Without these agronomic techniques it is almost impossible to obtain better yield. To overcome the yield problem of Date palm (Phoenix dactylifera L.) through different agronomic techniques a series of experiments were conducted during two consecutive years 2012 & 2013 to observe the effects of different cultural management practices affecting fruit set, fruit drop, physico-chemical characteristics and yield of ‘Dhakki’ date palm under the ecological conditions of Dera Ismail Khan, Khyber Pakhtun Khwa Pakistan. 1. Regarding agronomic practices a study was conducted to determine the effects of different rates of NPK fertilizers on fruit setting, yield and quality of ‘Dhakki’ date palm. In this study, treatments were consisted of six levels of Nitrogen, Phosphorous and Potassium along with control. Result revealed that significant variation existed among treatments for the most of the parameters such as fruit size, fruit drop, yield and quality during both years of study. Amongst treatments, NPK @1100+700+600g improved fruit characteristics, yield and quality of date fruit as compared to other fertilizers treatments hence it can be recommended. 2. Study relates to male spathe characteristics and effect of pollen sources on fruit set, yield and physico-chemical characteristics of ‘Dhakki’ date palm. Results indicated that males were different in spathe characteristics i.e. weight of pollen grain / tree and number of spathe/tree. The highest number of strand/spathe, number of flower/ strand and weight of pollen grain /spathe were observed in M3. Maximum pollen viability % was noticed in M2. As far as the effects of pollen sources are concerned, maximum fruit set, fruit length, fruit width, fruit weight, fruit yield kg/tree and moisture were recorded with pollination of M2. 3. Study was conducted to determine the effects of different pollination times on fruit set, yield and physico-chemical characteristics of date palm (cv. Dhakki). The results indicated that pollination times had a significant effect on all the parameters studied. Maximum fruit set (91.15, 90.15 %) and fruit yield (86.82, 87.15 kg palm-1) were recorded when pollination was carried out at 2nd day after spathe opening. Mean VII values for these parameters decreased with further delaying the pollination. Late pollination after 8 days of spathe opening reduced fruit set and yield but improved the overall fruit physico-chemical characteristics. 4. Study consisted of six levels of fruit thinning viz (T0=control, T1=12.50 %, T2=25%, T3=31%, T4=37%, T5=43%, T6=50%. Bunches were removed before pollination. The results showed a significant variation among the treatments for most of the parameters during both years of study. While non-reducing sugars were non significant. As far as treatments are concerned T4 showed maximum fruit setting in both years, while highest fruit physico-chemical characteristics’ and lowest fruit drop was observed in treatment T6. Maximum yield was recorded in T0 (control) treatment. 5. Study showed the effects of different leaf bunch ratio on yield and quality of ‘Dhakki’ date palm. Treatments were consisted of six levels of leaf/bunch viz (T0=control, T1=4:1 %, T2=5:1, T3=6:1, T4=7:1, T5=8:1 and T6=9:1. Leaf pruning was performed at the time of pollination. The results showed a significant variation among the treatments for most of the parameters during both years of the study. Fruit diameter was non-significant. Amongst treatments T6 produced maximum fruit yield and improved fruit physico- chemical characteristics’. 6. Study determined the effect of irrigation intervals on yield and physico chemical characteristics of ‘Dhakki’ date palm. The treatments were consisted of irrigation interval such as 6, 11, 16, 21, 26, 31 and 36th days as (control). The results indicated that irrigation intervals had significant effect on yield and fruit physico chemical characteristics in both years. The highest yield and fruit physico - chemical parameters were observed when irrigation was performed at 6 -11, 16 and 21 days’ intervals. Whereas maximum total sugars % was recorded in control treatment. The irrigation intervals from 6 days to 21 days improved fruit physico-chemical characteristics and yield of ‘Dhakki’ date palm.
Gov't Doc #: 21369
URI: http://prr.hec.gov.pk/jspui/handle/123456789/16492
Appears in Collections:PhD Thesis of All Public / Private Sector Universities / DAIs.

Files in This Item:
File Description SizeFormat 
muhammad Aslam horticulture 2020 gomal uni di khan.pdfphd.Thesis2.6 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.