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TOMATO RESPONSE TO COMPOST AMENDMENTS AND LIQUID ORGANIC FERTILIZER APPLIED THROUGH FOLIAR AND DRIP FERTIGATION | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 20, Issue 1, 2015, Pages 0-0 | ||
| Authors | ||
| A. A. F. Al-Taii; Sh. S. Ibrahim; H. A. Hadwan | ||
| Abstract | ||
| The main aim of the study is to investigate the response of tomato to practice of organic farming through application of compost to improve soil environment and liquid organic fertilizer as a source of nutrients. Multi-span plastic house (36x27.6m) located at the Experimental Farm of the Extension Department, Ministry of Agriculture, Kut, Wasit Governorate- Iraq, was used to grow tomato for the season 2012/2013. The main plots were the application of compost in 20 and 40 Ton.ha-1 and the subplots were the application of organic liquid fertilizer (OLF) through either drip fertigation or foliar. The treatments arranged in the field according to Randomized Complet Block Desigh (RCBD) in three replicates. The Compost had been produced at the site of composting, Ministry of Agriculture, Kut, Iraq and the organic liquid fertilizer at the Integrated Management of Plant Production and Protection, Ministry of Agriculture, Baghdad, Iraq. Results indicated that both the 20 and 40 m ton.ha-1 compost were sufficient in improving soil characteristics and enhancing plant growth. The two methods of supplying nutrients to crop (fertigation or foliar application) were very close in effect on tomato yield. Although the foliar application was associated with the use of low N dose OLF, it produced comparable yield to that produced by the fertigation associated with the use of high N dose OLF. Analysis of total available N, P, and K in soil as well as the mineral forms of N (NH4 and NO3) indicated no significant differences found among the treatments during the growing season at mid-season and post-harvest. It can be concluded that the 20 ton.ha¯1 compost/ha was sufficient to supply N, P, and K for plant growth and development and to maintain appreciable concentrations through the growing season. Soil organic matter had been increased during the growing season. Therefore, it is evident that the application of compost supplemented by organic liquid fertilizer was successful practice to meet crop demand for nutrients and maximize crop yield. | ||
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