Syed, Asghar Hussain (2003) GROWTH, YIELD AND ECONOMIC IMPACTS OF INTERCROPPING IN VEGETABLES. PhD thesis, NWFP Agriculture University, Peshawar.
Research project entitled "Growth, yield and economic dynamics of intercropping in vegetables" was conducted at Horticultural Research Farm, Malkander, NWFP Agricultural University, Peshawar (Pakistan) during 1998-2000. Summer and winter vegetables were evaluated alone and in various combinations for their growth and yield performances under competition. Each plot was 4x4 meters whereas number of rows varied depending on kind of vegetables. In summer, tomato was intercropped with okra, potato, com, chili and eggplant whereas among winter vegetables, pea was tested in combination with cauliflower, potato, lettuce, radish, turnip, coriander and spinach. All vegetables generally yielded more when grown as a single crop. But the focus of this study was to evaluate them in combinations. Pea + radish intercropping was found the most economical. This combination gave significantly maximum net income of Rs. 181648 ha-1 due to highest land equivalent ratio (1.54), followed by yield of pea and radish (6.5 and 68.2 t ha-1 respectively) resulting net income of Rs. 80800 ha-l from pea -lettuce combination, which yielded (7.0 and 5.5 t ha-1 respectively). Pea intercropped with spinach and potato remained least economical and resulted in the minimum net income of Rs. 432l5 and Rs. 44949 ha-1 respectively. Similarly, summer vegetables showed more yields when grown as single crops, than their respective yields in intercropping except tomato grown in okra and corn. The best companion of tomato was okra and their combination gave maximum net income of Rs. 134241ha-1 due to maximum yield of tomato (27.61 t ha-l) as compared to that in sole crop (20.34 t ha-l) and high market price of both vegetables. Tomato + corn combination resulted highest net income of Rs. 12579 due to high yields of tomato in intercropping and stability of corn yield in both years. The maximum net income was also due to market price of tomato and corn. The least income (Rs.59486 ha-l) has been recorded from intercropping tomato with potato due to high reduction in yield of both vegetables and high cost of production. These results have shown heavy reduction in yields of all vegetables (grown alone or in combination) in hot summer of 2000 compared to those in mild summer in 1999. The temperature difference in both years was apparently negligible (0.92ÃÂÃÂÃÂÃÂ°C) but it communicated a message that even such minor fluctuations in temperature can hardly devastate crop yields.
|Item Type:||Thesis (PhD)|
|Uncontrolled Keywords:||Intercropping, Vegetables, Growth, Yield performance, Okra, Potato, Corn, Chili, Eggplant, Tomato, Pea, Cauliflower, Lettuce, Radish, Turnip, Coriander, Spinach|
|Subjects:||Social Sciences(g) > Economics (g5)|
|Deposited By:||Mr. Muhammad Asif|
|Deposited On:||18 Aug 2006|
|Last Modified:||04 Oct 2007 21:01|
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