EFFECT OF IRON CONTAINING FERTILIZERS AND BOTAMISOL ON SOME TRAITS OF POTATO (SOLANUM TUBEROSUM L.)

To evaluate the effect of amino acids and nano particles and application of iron chelate on some quantitative traits, harvest index and marketable tuber yield of potato a factorial experiment based on randomized complete block design with three replications was conducted at Research Field of Damavand Natural Resources Institute in 2013. The first factor was amino acid (Botamisol 45%) at two levels (application and non- application) and the second factor was iron fertilizer in five levels: without iron fertilizer (control), the soil application, the foliar application, the soil + foliar applications, the soil + foliar applications. The results of variance analysis showed that all of the attributes studied were affected by using both amino acid and iron containing fertilizer (nano and chelate) significantly at the 1% level of probability. Mean comparisons also showed that the attributes under study positively responded to amino acid applications. The soil and foliar applications of iron nano particles were higher effective. This indicates that application of iron nano particles were more effective on desired attributes than iron chelate application. Amino acid and iron fertilizer interactions indicated that traits like protein and iron percentage, average weight of tuber, biological yield and marketable yield responded quite positively to amino acid and nano-iron foliar and soil applications.