Agronomic performance of forage corn for cattle feeding in Amazonas, Peru.

Corn () silage is an important and popular feed for dairy production in the Amazon region, so it is necessary to evaluate the agronomic performance of forage varieties of corn for cattle feeding in Amazonas. For this purpose, three corn varieties were evaluated (variety 1: Yellow Starchy Corn, variety 2: Chuska INIA 617, and variety 3: DOW 2B710), with two planting densities (density 1: 30 × 80 cm and density 2: 35 × 75 cm) and two fertilization conditions: with fertilization (F1) and without fertilization (F2). The parameters evaluated were plant height, number of leaves, leaf length and width, stem diameter, fresh forage, and dry matter.

Structural analysis of the future of the coffee industry in the Amazonas region using a MICMAC approach.

Currently there are problems in improving the competitiveness of the coffee industry in Amazonas, in this context the present research seeks to analyze the future behavior of the coffee industry through a structural analysis with MICMAC. For this purpose, 14 coffee guilds of Amazonas were interviewed, followed by an external and internal evaluation and a structural analysis with MICMAC. Subsequently, future events were analyzed and validated by experts.

New wheat variety INIA 440 - K'ANCHAREQ: Selection and agronomic and commercial characterization in Cusco, Peru.

The objective of this study was to select and characterize agronomically the advanced bread wheat line H - 1246 which gave origin to the INIA wheat variety 440 - K'ANCHAREQ. The research included yield trials in farmers' fields during 4 production seasons (2012-2016), adaptation and agronomic efficiency trials in two production seasons (2016-2018). In addition, the reaction to Yellow Rust and distinctness, uniformity and stability characteristics of the new wheat variety and commercial controls were evaluated.

Characterization of L. parent plants and physicochemical properties of associated soils, Peru.

It is important to carry out the morphological characterization of coffee parent plants and the physicochemical properties of the associated soils in the Amazon region, Peru, in order to achieve germplasm conservation. One hundred coffee mother plants were identified and located in five provinces of the region and evaluated according to morphological descriptors such as stipula shape, young leaf color, leaf shape, leaf apex shape, young shoot color, leaf color, fruit color, fruit shape, mature leaf color, and rust incidence percentage. In the plots where the parent plants were located, soil sampling was carried out to determine the physical and chemical properties.

Agromorphological characterization of cacao ( L.) accessions from the germplasm bank of the National Institute of Agrarian Innovation, Peru.

Agromorphological characterization of cacao accessions in Peru is currently an important tool in the conservation and genetic improvement of cacao germplasm. The objective of this study was to carry out the morphological and agronomic characterization of 113 cacao accessions from the Huarangopampa germplasm bank. Tree, leaf, flower, fruit and seed descriptors were used.

Genetic Groups of Fine-Aroma Native Cacao Based on Morphological and Sensory Descriptors in Northeast Peru.

The northeastern region of Peru is one of the centers of origin of cocoa due to the great diversity of this cultivar. The objective of this study is, therefore, to search for different genetic groups of 146 ecotypes of fine-aroma native cacao from the northeastern region of Peru, based on the morphological descriptors of pods, seeds, sensory, yield, and sampling altitude. The data were analyzed using multivariate statistics; a cluster analysis was performed with the numerical and categorical variables, followed by a principal component analysis (PCA) and the DGC (Di Rienzo, Guzmán y Casanoves) mean comparison test for the numerical data.

Influence of arboreal components on the physical-chemical characteristics of the soil under four silvopastoral systems in northeastern Peru.

Silvopastoral systems (SPS) are presented as an alternative for the protection and recovery of soils; however, the relationship between the tree component and the physical-chemical characteristics of the soil is unknown. Thus, the objective of this study was to evaluate the physical-chemical characteristics of the soil under four silvopastoral systems (SPS), alder (), pine (), cypress (), and pona (), and a treeless system (TS) in the Amazonas region. A completely randomized design (CRD) with five treatments and three replicates was used.

Phylogeny and species delimitations in the entomopathogenic genus (Hypocreales, Ascomycota), including the description of sp. nov.

The genus is considered a cosmopolitan anamorphic and teleomorphic genus of soilborne necrotrophic arthropod-pathogenic fungi that includes ecologically and economically important species. Species identification in is difficult because of its structural simplicity and the lack of distinctive phenotypic variation. Therefore, the use of multi-locus sequence data is essential to establish robust species boundaries in addition to DNA-based species delimitation methods using genetic distance, coalescent, and genealogical concordance approaches (polyphasic approaches).