THE EFFECT OF CULTIVAR, METHOD OF PLANTING AND PLANT POPULATION ON THE YIELD AND QUALITY OF SMALL POTATO TUBERS GROWN FOR EXPORT UNDER TROPICAL CONDITIONS IN THE SUDAN

1973 ◽  
pp. 85-96
Author(s):  
Z.E. Abdel-Al
2014 ◽  
Vol 4 (1) ◽  
pp. 1-6
Author(s):  
S. Shazia ◽  
F. Naz ◽  
A. Rauf ◽  
M. Inam-ul-Haq ◽  
S. Bushra

Potato (Solanum tuberosum L.) has various biotic constraints in its production due to pest attack. Among these, common scab caused by streptomyces scabies is an important disease in potato which causes economic loss with respect to plant yield and quality of tubers. The present study was conducted to determine the pathogenicity, pathogenic variation, characterization of morphological, physiological and biochemical aspects of Streptomyces associated with potato tubers grown in Rawalpindi district. Severity data and pathogenic variation of disease was studied by using different isolation and characterization techniques.


AGROFOR ◽  
2018 ◽  
Vol 3 (1) ◽  
Author(s):  
S.F. EL-SAYED ◽  
A.A. GAHRIB ◽  
Rasha R. EID

This investigation was carried out during the two summer seasons of 2015 and2016 in sandy soil on potato culitvar "Sante" to study the effect of using 100%compost (15 t/fed.) and 50% compost + nitrogen fixing bacteria (Azotobacter, andPseudomonas alone or together) on potato yield and quality as compared to theconventional mineral fertilization (120-75-150 kg/fed. NPK + 5 toncompost/fed.(control)). No significant differences in tubers yield/fed. were detectedbetween mineral fertilization (control) and using 100% compost (15t/fed).However, control treatment significantly produced a high yield per feddan,more than using 50% compost + any biofertilizer treatment.Using composttreatment at 15 t/fed.execeed all biofertilizer treatments in marketable yield in bothseasons, but without significant differences as compared with mineral fertilization(control).No significant differences in tuber dray matter and content of starch intuber were found between using compost treatment at 15 ton/fed. and mineralfertilization treatment (control)in both seasons. Nevertheless, application of 50%compost+ 4 applications of Azotobacter and Pseudomonas had the highest tuberconcentrations of starch and nitrogen with significant differences as compared withthe mineral fertilization.Using50% compost + 4 applications of Azotobacter orPseudomonas or both (Azotobacter + Pseudomonas )and application of 100%compost caused producing potato tubers with the lowest concentration of nitratewith significant differences as compared with the mineral fertilization. Nosignificant differences were detected between mineral and organic fertilizersconcerning P and K concentrations in tubers.


1989 ◽  
Vol 25 (3) ◽  
pp. 409-415 ◽  
Author(s):  
A. M. Ali

SUMMARYThe effects of planting potato tubers on four different sides of two ridge orientations was investigated. Soil temperature was coolest on the northern side, followed by the western, eastern and southern sides. Fifty percent emergence took place in 24, 42 and 49 days for tubers planted on the northern, western and eastern sides, respectively. Only 22% of tubers planted on the southern side emerged. The best yield and quality was obtained by planting on the northern side, followed successively by the eastern, western and southern sides of the ridge.


Author(s):  
K.V. Martynova ◽  
◽  
I.N. Romanova ◽  
N.V. Ptitsyna

As a result of the conducted research, it was found that in the conditions of the non-Chernozem zone, potato varieties of Madeira and Morning on sod-podzolic medium-loamy medium-cultivated soil are able to form a yield of tubers up to 33 t / ha. The influence of the sideral precursor on the yield and quality of potato tubers is scientifically justified.


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