Upland cotton cultivars under water deficit applied in phenological phases
Journal Title: Revista Verde de Agroecologia e Desenvolvimento Sustentável - Year 2018, Vol 13, Issue 3
Abstract
For the use of the water resource in agriculture, greater efficiency is sought because of scarcity in certain regions. The objective of this study was to evaluate the effect of water deficit, applied in different phenological phases, on the growth, physiology and production of upland cotton BRS 286 and BRS 336 cultivars. The experimental design was a randomized complete block in a Split Plot scheme, with the six water deficit regimes, applied on the different cotton phenological phases, constituting the Plots, and the two upland cotton cultivars, the Subplots, in four repetitions. Upland cotton growth, physiology and yield variables were evaluated. The water deficit restricted the upland cotton growth of both cultivars, with the most sensitive phases being those of initial growth, flower bud and flower. The 14 - day deficit, applied in the different phenological phases, did not influence the photosynthesis of the plants of both cultivars, but it altered its stomatal conductance and transpiration. Phenological phases of flower and fruit were the most sensitive to water deficit due to lower production. The treatments with no deficits in the whole cycle and with deficits in the initial growth and open fruit stages of both upland cotton cultivars allowed a satisfactory productivity compared to the national average.
Authors and Affiliations
Mailson Araújo Cordão, Whéllyson Pereira Araújo, José Rodrigues Pereira, João Henrique Zonta, Robson Felipe de Lima, Fagner Nogueira Ferreira
Keywords
Related Articles
- EP ID EP419030
- DOI 10.18378/rvads.v13i3.5933
- Views 106
- Downloads 0
Asepsis methods in bean seeds
The aim of this work was evaluate different aseptic methods in the physiological quality and sanity of Phaseolus vulgaris L. seeds. Seed samples inoculated with fungi Aspergillus sp. and another with Penicillium sp., wer...
Macronutrients content in ornamental sunflower under bovine Manure and Wastewater
The manures are byproducts of cattle, sometimes discarded, even though potentially organic fertilizers. Similarly, the wastewater should be considered another potential byproduct of reuse in agriculture. The objective of...
Fungal occurrence in guava 'paluma' submitted to impact and transported in two types of packaging
In the Northeast it is common the use of inadequate packaging for fruit transportation, causing injuries that serve as pathogen gateway. This study aimed to evaluate the incidence of rot, fungal severity and occurrence i...
Staphylococcus aureus and Salmonella sp. in curd cheese produced in São Rafael, Rio Grande do Norte
Artisanal coalho cheese is a product of animal origin consumed mainly in the northeastern region of Brazil. It is commonly made with raw, unpasteurized milk as raw material, without the use of good hygienic practices, an...
Soil attributes in systems agroecological and conventional irrigated cropping systems in Rio Grande do Norte Semiarid, Brazil
The sustainability of irrigated agricultural systems in semiarid region is based on the maintenance of its production capacity. The objective of this work was to evaluate soil quality in agroecological and conventional i...