Leaf miner incidence in coffee plants under different drip irrigation regimes and planting densities

Abstract

-The objective of this work was to evaluate the effect of different drip irrigation regimes and planting densities on the incidence of the leaf miner, Leucoptera coffeella, in arabica coffee plants for one year. The experiment was carried out in 2008, in a complete randomized block design, in a split-plot in time arrangement, with four replicates. The treatments consisted of four drip irrigation regimes -soil water balance, irrigations at 20 and 60 kPa soil tensions, and a nonirrigated treatment -, which were distributed at three plant densities: 2,500, 5,000, and 10,000 plants per hectare. The evaluations were made on a monthly basis between January and December 2008. The highest pest occurrence period was from August to November, a season with low-air relative humidity preceded by a drought period. Irrigated coffee plants showed an incidence of intact mines 2.2 times lower than that of nonirrigated plants. Irrigation and increasing of plant density contribute to the reduction of coffee leaf miner occurrence.

Application technology for chemically controlling coffee leaf miner in the cerrado of Minas Gerais State

“…palliative to prevent further damages to the crop, thus corroborating Assis et al (2012) who found greater losses in dryland areas.…”

Response of Certain Sesame Cultivars to the Infestation of Antigastra catalaunalis (Duponchel) (Lepidoptera: Crambidae) Under Field Condition and Two Irrigation Systems

“…Drip irrigation keeps the soil warm and dry between the rows of planted plants, which may harm insect pests that need environments with moderately high humidity and temperatures to reproduce and develop (Rendon and Walton, 2019). Assis et al (2012) found that Drip-irrigated coffee crops have fewer leaf miners than unirrigated ones. However, Daane and Williams (2003) recorded that high volumes of drip irrigation within vines may increase late-season leafhopper populations.…”

“…Insecticides treatment through a drip irrigation system can replace or reduce the number of foliar insecticide sprays and represents an alternative method for integrated pest management . However, (Assis et al, 2012) found that drip irrigated coffee crops have fewer leaf miners than un irrigated ones.…”

APPLICATIONS OF COPPER-BASED FUNGICIDES AND INFESTATIONS OF Leucoptera coffeella (Guérin-Mèneville & Perrottet) IN COFFEE PLANTS

“…These results were also observed by Custódio et al (2009), in a study that identified low infestation of the leafminer during the same period in the south of Minas Gerais state. The South of Minas region presents high levels of rainfall, which leads to unsuitable conditions for the reproduction of the coffee leafminer (ASSIS et al, 2012).…”