RESPONSE OF THE GROWTH AND YIELD OF TWO POTATO CULTIVARS TO SPRAYING OF BAT GUANO EXTRACT AND MICROELEMENTS .

Abstract

This study was conducted in the spring season for 2014 in Albutheyb in the west of Al-Anbar city. Using two potato tuber seeds Solanum tuberosum L. Riviera and Desiree cultivars class Elite. Using foliar spraying with the bat guano waste extract and micro elements by three times for both. The experiments had 7 treatments: 1-Control. 2-Full soil fertilizer recommendation without spraying. 3-Half-soil fertilizer recommendation + spraying with microelements 1g.l‾¹.4-Half-soil fertilizer recommendation + spraying with bat guano waste extract 15ml.l‾¹. 5-Half- soil fertilizer recommendation +spraying with bat guano waste extract 30ml.l‾¹. 6-Half-soil fertilizer recommendation + spraying with microelements 1g.l‾¹+spraying with bat guano waste extract 15ml.l‾¹. 7- Half-soil fertilizer recommendation + spraying with microelements 1g.l‾¹+ spraying with bat guano waste extract 30ml.l‾¹.Potato seeds were planted in 25\1\2014 using split-plot design in RCBD with three replicates for each treatment. Results showed a significant superiority of Riviera CV. on Desiree CV. in the following trait tuber weight mean and marketable tuber weight mean .The treatment half-soilfertilizer recommendation + spraying with microelements + spraying with bat guano waste extract 15ml.l‾¹ significant superiorities on control treatment in each of plant height , number of stems , number of leaves , leaf area , marketable yield and total yield at the rates of 54.6 cm , 2.91 stems , 45.6 leaves.plant‾¹ and 121.6 dc². 61.24 ton.h‾¹ and 62.99 ton.h‾¹ respectively.