Abstract:
In order to evaluate yield and
some of physiological indices of potato
cultivars in relation to different kinds of
manures, strip plot layout within a
randomized complete block design with
three replications was used. Three levels of
fertilizer were included manure (t/ha) (20,
40 and 60 t/ha), biologic fertilizer (ml/ha)
(0, 100 and 200 ml/ha), and chemical
fertilizer (kg/ha) (175, 350, and 525 kg/ha).
Cultivars were Marfona, Maradona and
Ramus. Marfona had obtained the maximum
plant height, total dry matter, LAI, tuber
yield, dry matter of tuber, the number of
tuber and tuber weight. Application of
60 t/ha manure fertilizer together with
Marfona produced the highest yield. In this
experiment, fertilizer showed significant
effects on potato cultivars yield and
physiological indices. Marfona and Ramus
had obtained the highest and the lowest total
dry matter, respectively. The maximum LAI
was related to application of 60 t/ha manure
fertilizer, and the minimum one was
obtained for application of 40 t/ha manure
fertilizer. In cultivar treatments, the highest
LAI was obtained for Marfona, followed by
Maradona and Ramus. The maximum and
the minimum crop growth rate (CGR) was
related to chemical and biological fertilizer,
respectively. The maximum CGR was
related to Marfona, than those of other
cultivars. There were not any significant
differences among different fertilizers in net
assimilation ratio (NAR), fertilizer levels
and various cultivars. Thus, it can ve
suggested that in order to increasing yield,
total dry matter, crop growth rate and other
physiological indices should be applied
60 t/ha manure fertilizer with Marfona
cultivar in Fereydan region of Esfahan, Iran.
