Response of four Potato Cultivars to Soil application with organic and amino acid compounds

Author(s): Abdel-Monnem Sadalaha Kahlel

A field experiment was implemented at Vegetable field, Department of Plant Production, Agricultural Technical College, Mosul, Iraq during spring season of 2018 to study the response of four potato cultivars (Actrice, Arizona, Riviera and Universa) to four organic and amino acid compounds (Azomine 4 ml/l, Tecamin Max 3 ml/l, Delfan plus 3 ml/l and Humibest 4 g/l) as soil application. These compounds were applied near the plant roots three times, the first after complete tubers emergency 45 days after planting, the second after 60 days and the third after 75 days of planting. The four potato cultivars were sown on 1st February in loamy soil, sprouted seed tubers were planted at 25 cm apart within the row. The treatments were arranged incomplete randomized block design with three replicates. The area of each plot was 6.75m2 (3linex3m long x 0.75 m wide). All experimental areas received the recommended dose of organic and mineral fertilizers. Samples of three plants from each treatment and each plot were randomly taken after 90days of planting and growth characters recorded were plant length, shoot number, leaf area, fresh and dry weights of shoots/plant. The total chlorophyll content in fully expanded leaves after 80 days of planting was measured as SPAD units using Minolta Chlorophyll Meter (model SPAD 502).

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