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Effect of soil mulching , irrigation and nitrogen levels on phosphorus and potassium up take by tomato plants . | ||
| journal of kerbala university | ||
| Article 1, Volume 7, Issue 3, 2011, Pages 1262-1273 PDF (0 K) | ||
| Abstract | ||
| A field experiment was carried out in Agricultural Research Station in Burjisiah – AlZubair Region – Basrah Province during the growing season 2008-2009 on tomato (Lycopersicon Eseulentum Mill.) V. Super Red to investigate the effect of mulching, irrigation regimes, and nitrogen level. The mulching treatment are black plastic, textile bags, bladygrass shoot, dates palm leaves and control (without mulching). The irrigation regimes were 100% of the total evaporation for the American evaporation pan class A (EP 100%) and 60% from the total evaporation for the American evaporation pan class A(EP 60%). Nitrogen was added at levels of 0, 80, and 160 kg ha-1 in the form of urea (46% N). Field was plowing perpendicularly and then received manure and the tomato seedling was transplanted on 20/10/2007 to the field at age of five true leaves stage. Then plants were fertilized with nitrogen levels and phosphorus and potassium at levels of 80 P2O5 ha-1 and 120 K2O ha-1, then soil surface was mulched with so mentioned mulches at one layer then irrigated using the two levels mentioned before.After 160 days of transplanting , the fourth upper leaves were collected from plants of each experimental unit end analyzed for P and K concentrations . Plant dry weight was recorded at end of tomato season , then uptake of P and K were calculated . The results showed that soil mulching enhanced P and K conc. and P and K uptake by tomato plants compared with unmulchinged treatment with an increase of 48 and 32% for P and K uptake , respectively . Plastic mulch gave the highest P and K uptake as compared with other mulche types . Highest P and K conc. and P and K uptake were obtained with EP 100% compared with EP 60% . Data also revealed that increasing N level increased K conc. In leaves and P and K uptake significantly at all mulche treatments . | ||
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