Soil is a living, dynamic entity and at the same time vulnerable to degradation, if it is not managed with sustainable practices, causing low crop yields. The objective of this research was to determine the effects of plant cover associated with the cultivation of corn on soil properties: bulk density, gravimetric moisture, soil pH and electrical conductivity, organic matter, estimation of nitrogen supply when leaf biomass is incorporated, and finally corn yield. The study was conducted under a randomized complete block experimental design with five treatments: corn without cover crop (control), corn with clover cover crop; corn with vetch cover crop; corn with vetch + oats cover crop and corn with dead cover crop (mulch). The results showed that corn associated with clover, vetch and mulch (dead cover) increased grain yield (kg.ha-1) of corn by 44%, 37% and 38%, respectively, compared t...

The reduced acceleration of the organic matter in the soil has been affecting its properties, making it necessary to repeat the use and management of organic fertilizers. The objective of research was to evaluate the effect of two fertilizers application, Island Guano (IG) and sheep manure (SM), on the following three physical properties of the soil: bulk density, water-stable aggregates and penetration resistance, under quinoa (Chenopodium quinoa Willd) cultivation, Hualhuas variety. These properties were determined by beveled cylinder, Yoder wet-sieving and dynamic cone penetrometer methods and under a completely randomized block design, with factorial arrangement of two factors (IG and SM) and three levels per factor (0; 0.5 and 1 t*ha-1 for IG and 0; 2.5 and 5 t*ha-1 for SM), nine treatments were evaluated, with three repetitions, so 27 total experimental units. Results showed that c...

The reduced acceleration of the organic matter in the soil has been affecting its properties, making it necessary to repeat the use and management of organic fertilizers. The objective of research was to evaluate the effect of two fertilizers application, Island Guano (IG) and sheep manure (SM), on the following three physical properties of the soil: bulk density, water-stable aggregates and penetration resistance, under quinoa (Chenopodium quinoa Willd) cultivation, Hualhuas variety. These properties were determined by beveled cylinder, Yoder wet-sieving and dynamic cone penetrometer methods and under a completely randomized block design, with factorial arrangement of two factors (IG and SM) and three levels per factor (0; 0.5 and 1 t*ha-1 for IG and 0; 2.5 and 5 t*ha-1 for SM), nine treatments were evaluated, with three repetitions, so 27 total experimental units. Results showed that c...