NITROGEN FERTILIZERS AND OCCURRENCE OF Leucoptera coffeella (Guérin-Mèneville & Perrottet) IN TRANSPLANTED COFFEE SEEDLINGS

Abstract

The coffee leaf-miner (CLM) Leucoptera coffeella (Lepidoptera: Lyonetiidae) is one of the main pests of coffee plants in Brazil. Its occurrence in the crop is directly related to the physiological state and growth characteristics of coffee plants, in turn related to plant nutrition. The present work, therefore, aimed to evaluate the effect of nitrogen sources on the occurrence of CLM in coffee seedlings. The fertilizers used were ammonium sulfate, urea, and organomineral. The number of leaves mined by CLM and the relative contents of chlorophyll and crude protein in the leaves were recorded. Ammonium sulfate and urea favored higher occurrence of leaves mined and organomineral fertilizer provided the lowest incidence of leaves mined by CLM. The three sources of nitrogen increased the chlorophyll content, but only ammonium sulfate caused an increased percentage of crude protein in the leaves of coffee seedlings. For the improvement of management strategies for L. coffeella it is fundamental to understand favorable conditions, nutritional management it is one of the pest control mechanisms, thus making it possible to control the insect and prevent the population of CLM from reaching an economic damage threshold.

Studies on Inducer Mediated Resistance Responses against Biological Fitness of Brevicoryne brassicae (Homoptera: Aphididae) on Brassica napus

“…Also, Agathokleous et al (2019) have revealed the bio-inhibitory impacts of AS for insects on brassica plants even under ozone pollution. But this effect may be altered under excessive or high AS doses, especially for insect defense (Sabino et al 2018).…”

A Comprehensive Review of the Coffee Leaf Miner Leucoptera coffeella (Lepidoptera: Lyonetiidae)—A Major Pest for the Coffee Crop in Brazil and Others Neotropical Countries

“…Eventually, without adequate cultural treatments, the infestation can lead to the death of the plant. A relationship between the feeding damage of CLM and the application of synthetic fertilizers has been described in the literature [41,42]. The amount of free amino acids and reducing sugars in the metabolic system of coffee plants is related to nutritional imbalance and susceptibility to pests.…”

“…The amount of free amino acids and reducing sugars in the metabolic system of coffee plants is related to nutritional imbalance and susceptibility to pests. Plants fertilized with organic material showed a decrease of up to 50% of leaf mines [41].…”

A Comprehensive Review of the Coffee Leaf Miner Leucoptera Coffeella (Lepidoptera: Lyonetiidae), With Special Regard to Neotropical Impacts, Pest Management and Control

“…A relationship between the feeding damage of CLM and the application of synthetic fertilizers has been described in the literature [28,29]. The amount of free amino acids and reducing sugars in the metabolic system of coffee plants is related to nutritional imbalance and susceptibility to pests.…”

“…The amount of free amino acids and reducing sugars in the metabolic system of coffee plants is related to nutritional imbalance and susceptibility to pests. Plants fertilized with organic material showed a decrease of up to 50% of leaf mines [28].…”