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EFFECT OF NPK APPLICATION TO THE SOIL AND SPRAYING ON SOME YIELD CHARACTERISTICS OF POTATO | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 39, Issue 3, 2008, Pages 1-9 | ||
| Authors | ||
| Hameed K. Al-Salmani; Jawad T. Mohmood | ||
| Abstract | ||
| A field experiment was conducted in a private field at Al-Latifia region in a loamy soil. This was to study effect of three levels of Mixed NPK fertilizer added to the soil: (240-120-400), (180-90-300) and (120-60-200) kg N P K ha1- respectively. Plants were sprayed twice, four and six times with a fertilizer solution contains 3000 - 1500 - 6000 mg of NPK L-1 respectively, along with spraying water only on some yield characteristics. A randomized complete block design was used with three replications. At maturity vegetative parts of plants were harvested, dried, dry weight was determined, and total marketable yield of tubers was calculated. The results showed a significant increase in total weight of vegetative parts, total yield of tubers and marketable yield. Interaction between (240 - 120 —400) kg NPK ha-1 with spraying 6 times gave 20.135 t ha-1 of tubers and 2.157 t ha-1 of total dry weight of vegetative parts Six sprayings with the second level of fertilizer 180-90-300 kg NPK added to the soil reduced quantity of fertilizer added to the soil by 25% of the first level of fertilizer, on other words this offer an average of 130-143-241 kg of urea, MAP and potassium sulfate ha-1. | ||
| Main Subjects | ||
| University of Anbar | ||
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