THE INFLUENCE OF THE CULTURE SYSTEM AND THE HYBRID ON PRODUCTION AND ECONOMIC EFFICIENCY FOR SWEET CORN

Abstract

The paper presents the results of the study regarding the behavior of two hybrids of sweet corn and the economic efficiency of this culture, established in two culture systems, in the field and in solar greenhouse. The experience took place in 2021, in southern Romania, on a psamosoil type soil, 43°48′04″N 24°05′31″E. The biological material was represented by the hybrids Sweet Thing F1 and Dessert R78 F1 grown in open field and in solar greenhouse. The specifics of the variants were as follows: V1- Sweet Thing F1- culture in solar greenhouse; V2- Sweet Thing F1 - field culture; V3- Dessert R78 F1- culture in solar greenhouse; V4- Dessert R78F1 – field culture. The control of the experience was the average of the variants. In order to assess the behavior of the hybrids, determinations were made regarding morphological characters, production capacity and economic efficiency for both culture systems. The results regarding the influence of the culture system on the morphological and production characters indicate for both hybrids higher values in solar greenhouse system, compared to the results recorded in field culture. In the field, production was lower, being affected by the increase in temperatures during the pollination period, over 30⁰C. Regarding the influence of the hybrid on sweet corn production, Sweet Thing F1 performed best both in the field and in solar greenhouse - 11.2 t/ha. Concerning the crop of sweet corn in a solar greenhouse, the profit rate was three times higherthan the crop in the field due to the earliness of the crop and the higher selling price.