Abstract
Okra (Abelmoschus esculentus L) is an important vegetable crop currently cultivated in many parts of the world. The adoption of management strategies to promote the nutritional status and crop productivity in semiarid regions of Brazil is still poorly studied. Thus, this experiment was conducted to evaluate the effect of raising the level of organic matter in the soil, irrigation and soil mulching in the nutritional status and productivity of okra plant in the semiarid region of Brazil. In this study, the experimental design of randomized blocks in a factorial 5×2×2 was used, with four replications. The treatments were five rates of cattle manure, necessary for raising the levels of organic matter in the pits to 1.8, 2.62, 3.44, 4.26 and 5.08%, two water depths (50 and 100%) of crop evapotranspiration, and soil with and without mulch. The elevation of soil organic matter level until 5.08% in conjunction with the implementation of 100% of Evapotranspiration (ETc) water depth and the use of mulch on the soil favored the greatest absorption of nutrients and increased the productivity of okra plant. Key words: Cattle manure, nutrient absorption, management of water in the soil.
Highlights
Okra (Abelmoschus esculentus L) is a vegetable currently cultivated in many parts of the world
Considering nitrogen responds to the effects of irrigation and soil organic matter, and the accumulated levels of S vary according to the levels of organic matter added to the soil (Table 3)
Increased levels of organic matter stimulate the accumulation of nitrogen in the foliar dry matter of the okra to the highest value of 43.15 g kg-1, the estimated maximum level of 3.80% of the input
Summary
Okra (Abelmoschus esculentus L) is a vegetable currently cultivated in many parts of the world In regions of semiarid climate where low pluviometry is associated with constant irregularity of rainfall, it is necessary to provide water to the culture through the use of irrigation techniques, to increase productivity by optimizing the use of water resources (Barbosa et al, 2015) Another promising alternative to crop management can be the use of mulch on the soil surface, which has been found efficient in reducing hydric loss through evaporation (Teófilo et al, 2012). There are no studies to understand the behavior of okra culture in regions with semiarid climates in Brazil, when adopted this set of techniques This experiment was conducted to evaluate the nutritional status of okra in relation to the elevation of levels of organic matter, irrigation and soil mulching
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