Determination of evapotranspiration under different irrigation and fertilization techniques in green pepper crop production

Tanaskovic, Vjekoslav and Chukaliev, Ordan and Jankuloski, Zivko and Markoski, Mile and Iljovski, Igor and Nechkovski, Stojanche (2013) Determination of evapotranspiration under different irrigation and fertilization techniques in green pepper crop production. International Symposium for Agriculture and Food, XXXVII Faculty - Economy Meeting, IV Macedonian Symposium for Viticulture and Wine Production, VII Symposium for Vegetables and Flower Production, Skopje, Macedonia, 12-14 December 2012.. pp. 755-768.

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Abstract

The field experiment was conducted with green pepper crop Bela dolga grown in experimental plastic house near by the Faculty of Agricultural Sciences and Food in Skopje, during the period of May to October in 2005, 2006 and 2007. The main aim of this investigation was to determine evapotranspiration (ETP) in two-stem pruned (“V”system) green pepper crop under different irrigation and fertilization techniques and regimes. Also, the evapotranspiration coefficient was determined during this investigation, which can be used as parameter for indirect calculation of total crop water requirements during the vegetation. Therefore, four experimental treatments were applied in this study. Three treatments were irrigated by drip irrigation and drip fertigation (KK1, KK2, KK3), while the last one was irrigated by furrow irrigation with conventional application of fertilizer (control treatment ØB). From the average results obtained in three years of investigation, it can be concluded that there are negligible differences in ETP and ETk between the treatments KK1 and KK2 (drip fertigation every 2 and 4 days), what is result of closer irrigation interval of these two treatments. As a result of longer frequencies between the irrigations, the treatment KK3 (drip fertigation scheduled by tensiometers) showed 4,5-5,5% higher evapotrasnpiration in comparison with KK2 and KK1, and from 24 to 25,5% higher ETk in comparison with KK1 and KK2. The results for ETP and ETK in treatments KK1 and KK2 showed statistically significant differences in comparison with treatment KK3. The effect of the irrigation and fertilization techniques on evapotranspiration and ETk are presented by the results from the treatment KK3 and ØB. Namely, the control treatment showed 15% higher ETP, or almost 30% ETk in comparison with KK3. The results are statistically significant at 0,01 level of probability.

Item Type: Article
Subjects: Scientific Fields (Frascati) > Agricultural Sciences > Agriculture, forestry and fisheries
Divisions: Faculty of Biotechnical Sciences
Depositing User: Mr Blagojce Najdovski
Date Deposited: 08 Feb 2019 10:20
Last Modified: 08 Feb 2019 10:21
URI: http://eprints.uklo.edu.mk/id/eprint/1648

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