Volume 7, Issue 4 (winter 2004)
jwss 2004, 7(4): 1-10 |
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A. Kashi, S. Hosseinzadeh, M. Babalar, H. Lessani. Effect of Black Polyethylene Mulch and Calcium Nitrate Application on Growth, Yield, and Blossom-End Rot of Watermelon, cv. Charleston Gray. jwss 2004; 7 (4) :1-10
URL: http://jstnar.iut.ac.ir/article-1-480-en.html
URL: http://jstnar.iut.ac.ir/article-1-480-en.html
Abstract: (30367 Views)
Watermelon (Citrullus Lanatus) cv. Charleston Gray is one of the most important cultivars grown in Iran. It has some good quantitative and qualitative characteristics but unfortunately is sensitive to Blossom End rot. To solve this problem, this experiment was conducted in a factorial manner in randomized complete block design with four replications in Research Station and Laboratories of Department of Horticulture, College of Agriculture, the University of Tehran, during 1997 & 1998. In this experiment, black polyethylene mulch was used and calcium nitrate was foliar sprayed at concentrations of 0, 4, and 6 g/L. Results indicated that mulch could increase yield by 85% over two years due to weed growth suppression and conserving soil moisture for a longer time. Foliage fresh weight, number and average weight of fruits per plant and precocity were also significantly affected by black polyethylene mulch. Furthermore, mulch reduced the number and weight of fruits affected by Blossom End rot by about 13% and 12.5% (average of two years), respectively. Calcium nitrate addition during both years had no significant effect on the measured fruit characteristics nor on Blossom End rot.
Keywords: Watermelon, Charleston Gray, Blossom End rot, Polyethylene, Mulch, Calcium nitrate, Growth, Yield, Precocity
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