Increase in pea productivity associated with irrigation management

Abstract

Proper irrigation management is crucial to obtain high yields of pea, since its cultivation is recommended in cold and dry seasons. Taking into account the great genetic diversity, we considered necessary to evaluate cultivars which best adapt to the intrinsic conditions of Cerrado Region, as it presents low fertility soil, long dry period in the winter, drought periods (veranicos) in rainy season, mainly in January and February (summer). Thus, the aim of this study was to evaluate adaptability of green-pea cultivars under different irrigation depths in Northeast Region of state of Mato Grosso do Sul. The experiment was installed in a split plot scheme, with four irrigation depths [50, 75, 100 and 125% of crop evapotranspiration (ETc)] and at subplots, four pea cultivars (Forró, Frevo, Pagode and Samba) in a randomized block design with three replications. Pod length, number and mass of grains per pod, number of pods per plant, plant length, productivity and efficiency of water use were evaluated. Excess water supply (water stress) or shortage (water deficit) can cause decrease in the productivity of pea crop for green grains, considering replacement of 114.81% of Etc, the most recommended for the crop. Cultivar Forró, showed the best productive performance in relation to other cultivars, in the climatic conditions of Southern Cerrado (Mato Grosso do Sul, Brazil).

Experimental plan for tests with pea

“…For the variables number of pods per plant and mass of pods per plant, no data were found in the literature on the estimation of plot size to evaluate these variables, leading to a wide variation in plot sizes used in the work with the crop. The plot sizes used by Cardoso et al (2012); Santos, Cunha, Taira, Souza, and Leal (2018); Singh et al (2019);and Zhang et al (2016) ranged from 10 to 420 plants per plot, which were higher than those obtained in the present study, thus indicating greater reliability in the published information. However, Carvalho, Rezende, Aquino, Freitas, and Oliveira (2012); Garcia, Ferreira, Figueiredo, and Santos (2010); Mahieu et al (2009); and Oliveira, Carvalho, Rezende, and Freitas (2011) used a plot size ranging from one to six plants; these values are below what was estimated in the present study and may have led to less experimental precision in these works.…”

“…The plot sizes used by Cardoso et al. (2012); Santos, Cunha, Taira, Souza, and Leal (2018); Singh et al. (2019); and Zhang et al.…”

Evapotranspiration mapping of commercial corn fields in Brazil using SAFER algorithm

“…Corn ET was estimated using the modified FAO method (MFAO) (Bernardo et al, 2019;Mantovani et al, 2006). The MFAO method has been widely used in scientific studies in Brazil (Santos et al, 2018;Silva et al, 2018c;Venancio et al, 2019;Vicente et al, 2017). In addition, it has been widely applied in several Brazilians farms and in other countries by the company IRRIGER (http://www.irriger.com.br/ en-US/) (IRRIGER, 2019).…”

Real Time Soil Moisture (RTSM) Based Irrigation Scheduling to Improve Yield and Water-Use Efficiency of Green Pea (Pisum sativum L.) Grown in North India

“…Improper irrigation scheduling with deficit quantity of water has led to water stress in pea production, causing a decrease in the evapotranspiration, growth parameters and pea yield [1]. Harmful effects of improper water management, such asover application of water, deficit application of water, effect of water on soil salinity, water stress, and lack of research to determine the optimum quantity of water in pea production, have been reported by many researchers [1][2][3]. An irrigation moisture regimen for green pea crop is crucial to optimize yield and avoid over-watering.…”

“…Different varieties of green pea with varying irrigation levels, viz., 50%, 75%, 100%, and 125% ETc were tested under the drip irrigation and found a decrease in the productivity of pea at an excess and deficit irrigation treatments [3]. Green pod yield decreased with an increase in drought conditions, occurringat the vegetative and flowering stages [6].…”