EVALUATION OF THE PERFORMANCE OF THREE POTATO GENOTYPES UNDER THE BIOLOGICAL AND ORGANIC FERTILIZATION

Abstract

This study was carried out during the winter season of 2020 to evaluate the performance of three genotypesof potato (Solanum tuberosum L.) with the effect of biological ferttilizer(Mycorrhizae(MY) and Azotobacter(AZ))and organic ferttilizer(chickens Residual (I)) the included of  eight levels of ferttilizer(0,MY,AZ,I,(MY+AZ),MY*I,AZ*I,(MY+AZ)*I) and the genotypeswere (HERMOSA, SIFRA and ALVERSTONE). the Potato tubers were planted in Babylon Governorate / Al-Musayyab project area using a factorial experiment according to the Randomized Complete Block Design (RCBD) with three replications to study the characteristics of genotypes growth and yield. the study showed significant differences for all the studied traits among genotypes , fertilizer treatments and the interaction among genotypes and fertilizer treatments.the treatment (organic (I) with HERMOSA variety ) gave the highest average in plant height (69.85) cm , as compared to ( control with ALVERSTONE   variety ) treatment which gave the lowest average (41.87) cm . while the treatment (organic (I) with HERMOSA variety ) and (organic (I) with (MY+AZ) with HERMOSA variety) gave the highest average in leaf area of the plant (8160 and 7918) cm².plant^-1respectively , as compared to ( control with ALVERSTONE variety ) treatment which gave the lowest average (3514) cm².plant^-1. while the treatment (control with SIFRA variety ) gave the highest average in The relative content of chlorophyll in leaves (26.74) , as compared to ( azotobacter with ALVERSTONE   variety ) treatment which gave the lowest average (11.66). while The treatment ((MY+AZ) with ALVERSTONE  variety ) gave the highest average in Marketable tuber weight (161.39) gm , as compared to ( (MY+AZ)*I with HERMOSA variety ) treatment which gave the lowest average (75.20) gm . while The treatment ( organic (I) with HERMOSA variety ) gave the highest average in Percentage of dry matter in tubers (67.70) (%), as compared to ( (MY+AZ)*I with ALVERSTONE  variety ) treatment which gave the lowest average (22.92) (%).while The treatment ( organic (I) and Azotobacter with ALVERSTONE  variety ) gave the highest average in Total yield per plant (802.20) g. plant^-1 , as compared to ( control with SIFRA variety ) treatment which gave the lowest average (221.90)  g. plant^-1. the aim of study is to find the best varety was ALVERSTONE and the AZ*I best treatment