Fruit plants being perennial in nature entail longer period of time to enter in the fruiting phase, hence, for varietal evaluation, long gestation period is the major impediment in the quik release of furit varieties. Moreover, in citrus conventional breeding encounter the problem of poly embrony, in breeding depression and identification of the zygotic seedlings. In the face of such difficulties the more emphsis was placed on the introduction and acclimatization of a wide range of citrus varieties. The detail of efforts and the outcome on varietal development is given here under:-

 

 

Total no. of 88 nucellar progeny of different citrus groups was produced under this Directorate.

 

A broad based rootstock evaluation programme for improving the yield and fruit quality is under way. Carrizo sitrange, Troyer sitrange, volkamirana, Mithi, kharna khata and gadha dahi have been evaluated for salustiana sweet orange Carrizo and troyer Citrange recommended under moderate pH levels. With the use of these root stocks soil born diseases/ pests can be effectively ward off.

 

Through using graft wood of quality improving citrus species i.e. Sweet as inter stocks lime, C-35 Citrange, Carrizo Citrange better internal quality character have been achieved as the TSS levels have been raised up to 16 %. This technique is worth of commercialization.

 

Zn and B through foliar application have resulted in better yield and quality characters in calcareous soil> 5% caco3 organic matter 0.87 % having soil pH above 8.

 

Causes of citrus decline

Control of citrus scabe disease through binomyl, topspin-M and copper oxychloride through respective doses 1 gm, 1.5 gm and 2.5 gm/lit proved effective citrus prevalence studied in sectional orchard where Hamlin and Ruby Blood were found susceptible.

 

Fungicides and antibiotic were tested for this efficacy where streptomycin sprayed at 1 gm/lit proved effective on grapefruit

Trimoltox @ 205 gm/lit proved the next better treatment.

 

Furrow irrigation system proved better as compared to flood irrigation and 60% water can be saved through this practice.

Phytophthora foot disease problem was better address by furrow system

 

Citrus psyllla               49%

Mealy bug                   44%

Leaf minor                  45%

Fruit Fly                      70%

Lemon butter fly         48%

Thrips                          40%

Mites                           20%

Scales                          25%

At wood Early Navel 

 

1- Red Blush                           2- Ruby Red               3- Marsh seedless        4- Star Ruby

5- Shamber                              6- Foster                      7- Pomelo white          8- Pomelo red 

 

1- Kinnow                               2- Feutrell’s Early       3- Wilking                   4- Willow leaf 5- Murccott                             6- Honey                     7- Clauselina               8- Cemenules

1- Fair child                             2- Fremont                  3- Dalcy         

           

1- Minneola                             2- Orlando      

           

1- Eurika                                 2- Lisbon                     3- Cor Pacie                4- Mesero

6- Berma                                 7- Feminelo                 8- Santa Terisa            9- Monachello

1- Palestine Mitha       2- Local Mitha                        3- Peshavri Mitha        4- Kashmiri Mitha      

 

1- Kaghzi                                2- Eustis                      3- Tahiti                       4- Bearss

5- Late Lime

 

 

Trials under this project pertaqins to the following

Modification of flood irrigation into furrow and pressurized system

Phenoogical studies on 3 varieties

Studies on the pruning impact

GA3 application in kinnow

The above mentioned trial on farmers field

Foreign training (Australia) on irrigation management, propagation techniques for leaf analyses and GA3 Preparation methods

 

Sargodha                                             62991

Sahiwal                                               257069

Resumed Mittchle Fruit Farm             115019

Renalakhurd

                                    TOTAL          435079

Contribution of Seedless plants          60537

 

Rootstock studies                               16

Varietal Studies                                  10

Management practices                        9

Technical paper                                   25

Papular articles                                    60

Participation in Seminar of                 3

National and International