Growth, production and yield of common bean under water replacement levels

Abstract

The bean is a world-class crop and requires adequate water management for higher yield. The objective of this study was to evaluate the growth and the production and to fit multiple regression models to estimate the production components, total biomass accumulation and grain yield of ‘Rosinha’ bean under levels of replacement of evapotranspired water. The experimental design was randomized blocks with four repetitions. Treatments consisted of fractions of crop evapotranspiration (25, 50, 75, 100, 125 and 150% ETc). Growth variables (plant height, number of leaves, leaf area per plant, leaf area index, stem dry mass and leaf dry mass) and production components (number of pods per plant, pod length, pod diameter, pod dry mass, total biomass, pod mass per plant, grain yield) were evaluated. Measurements of growth variables carried out at 35 days after sowing were used to fit multiple regression models to estimate dry pod mass, total biomass accumulation and grain yield of common bean. Higher growth and yield of common bean, ‘Rosinha’, are obtained with irrigation depth corresponding to 100% of the evapotranspired water.

Produtividade De Feijão Irrigado De Primeira Safra Na Região Do Arenito Caiuá, Noroeste Do Paraná

“…Ao longo do ciclo do experimento foram realizados dez eventos de irrigação para aplicar 100% da lâmina líquida no tratamento I3, enquanto que, o tratamento I4 recebeu a maior lâmina de irrigação, os nos tratamentos I0, I1 e I2 receberam lâminas deficitárias. De acordo com Magalhães et al (2019), tanto o déficit como o excesso de água no solo contribuem para a redução da produtividade feijão.…”

“…Conforme dados da CONAB (2022), a produtividade média do feijão produzido no Paraná, nas safras 2021/22, foi, respectivamente, 1.320 e 1.042 kg ha -1 para o cultivo de primeira e terceira safra. Em condições ideais de disponibilidade hídrica, temperatura e radiação solar, a produtividade do feijão pode atingir valores superiores a 3.000 kg ha -1 (MAGALHÃES et al, 2019). Solos de textura arenosa, como os do Arenito Caiuá, possuem baixa capacidade de retenção de água, nutrientes e maior susceptibilidade a erosão (OLIVEIRA et al, 2020).…”

Physiological adjustments, fiber yield and quality of colored cotton BRS Topázio cultivar under leaf silicon spraying

“…Using PCA and MLRA to assess soil quality indicators in long-term management systems (20 years), Barbosa et al (2019) adjusted models for predicting urease and amylase enzymes activity, with good prognostic capacity. Magalhães et al (2019) adjusted models for bean production components prediction according to irrigation levels and growth variables. Sawan (2013), for cotton plants, adjusted multiple linear regression models to predict production components as a function of climatic variables.…”