Yield of onion in soil with cattle manure and nitrogen

Abstract

Onion is the third vegetable crop in economic importance for Brazil, only behind potato and tomato, and responds with increased production to the use of organic and mineral fertilizers. The objective of this study was to evaluate the effect of doses of cattle manure and nitrogen (N) on onion growth and yield. The experimental design used was randomized blocks, in 6 x 2 factorial scheme, corresponding to six doses of cattle manure (0; 10; 20; 30; 40 and 50 t ha-1), in the presence and absence of N, with four repetitions. The variables studied were: shoot fresh and dry masses, total and marketable bulb yields, percentage of bulbs classified and leaf N content. There was an interactive effect (p ≤ 0.05) of cattle manure and N doses on shoot fresh and dry masses, total and marketable yields, classification of bulbs according to transverse diameter and N concentration in onion bulbs. The optimal dose for marketable yield of bulbs is 27 t ha-1 of cattle manure in the presence of N.

Monitoring Onion Crop “Cipolla Rossa di Tropea Calabria IGP” Growth and Yield Response to Varying Nitrogen Fertilizer Application Rates Using UAV Imagery

“…The highest yield was registered for N180 treatments, equal to 890 q ha −1 , while lower productions were observed for N150, equivalent to 692 q ha −1 (−21%), and N210 with 619 q ha −1 (−30%). The yield registered in the current experiment is near the productivity observed in other studies carried out within and abroad of Europe [66][67][68]. In particular, concerning fertilization management, as in our experiment, the highest yield with similar production was also obtained with a dose of 180 kg N ha −1 by Díaz-Pérez et al [69], Rodrigues et al [70], and Gonçalves et al [71].…”

Organic fertilization and forms of application in Allium cepa growth, yield and bulb quality

“…At 60 days after transplantation (DAT), the height of five plants was measured from the soil to the tip of the leaf, with results expressed in cm (Belem et al, 2020). The leaves were detached and placed in paper bags to evaluate the fresh mass and dry mass of the shoots, with the fresh mass corresponding to the mass of the plants before drying and the dry mass obtained after drying in an oven with circulation at 65 °C for 96 hours.…”

“…In the study with the use of cattle manure and nitrogen supplementation with onion cultivar IPA-11Vale Ouro Belem et al (2020)observed that the cattle manure dose of 27 t ha -1 in the presence of N was responsible for the maximum marketable yield of bulbs of 50 t ha -1 , that is, these authors found marketable production values similar to those of the present study, which only performed incorporated fertilization with manure and also achieved higher profitability with a lower dose (23.66 t ha -1 ). Thus, the use of fertilization with cattle manure incorporated into the soil in onion is feasible to achieve high marketable yield, possibly due to rapid decomposition and increased microbial activity and, consequently, greater release of nutrients such as nitrogen, phosphorus and potassium (Silva et al, 2014).…”

“…As a measure to meet the nutritional needs of this crop, organic fertilization, through the addition of different sources of organic matter, has been shown to be very promising (Belem et al, 2020), and the demand for techniques suitable for family farming for onion production has become constant, especially aiming at agroecological methods (Santos et al, 2012).…”

Agronomic performance and physicochemical characteristics of onion genotypes under different spacing in the humid Amazonian tropics

“…In Brazil, onion production stands out in the South region with the states of Santa Catarina and Rio Grande do Sul, the Southeast region, mainly the states of São Paulo and Minas Gerais and the Northeast, in the São Francisco Valley, with the states of Pernambuco and Bahia as the largest producers (IBGE, 2019;Aline et al, 2020).…”