Recomendações técnicas para o cultivo do milho no Meio-Norte do Brasil: safra 2003/2004.

bitstream/item/131490/1/Circular-39-Recomendacoes-Tecnicas-para-o-Cultivo-do-milho.PD

Participatory varietal selection of potato using the mother & baby trial design: A gender-responsive trainer’s guide.

This guide aims to provide step-by-step guidance on facilitating and documenting the PVS dynamics using the MBT design to select, and eventually release, potato varieties preferred by end-users that suit male and female farmers ’different needs, diverse agro-systems, and management practices, as well as traders ’and consumers’ preferences

Produtividade de grãos e eficiência de uso da água de feijão-caupi de portes ereto, semi-ereto e semi-prostrado em relação à densidade de plantas.

O arranjo de plantas é uma prática de manejo importante para potencializar a produtividade de grãos (PG) do feijão-caupi (Vigna unguiculata (L.) Walp.). O objetivo deste trabalho foi avaliar o desempenho produtivo do feijão-caupi de portes ereto (E), semi-ereto (SE) e semi-prostrado (SP), em diferentes densidades de plantas (DP) (8,0, 12,0, 16,0, 20,0, 24,0 e 28,0 plantas m-2 ? portes E e SE; e 2,0; 6,0; 10,0; 14,0; 18,0 e 22,0 plantas m-2 ? porte SP).CONBEA 2013

Densidade de plantas e eficiência de uso da água em cultivares comerciais de feijão-caupi em ambiente do centro norte piauiense.

A produtividade de grãos (PG) ótima de uma cultura depende do manejo e do equilíbrio entre os fatores de produção. O objetivo deste trabalho foi avaliar a performance e a eficiência de uso da água (EUA) de cultivares comerciais (BR Gurguéia, BRS Aracê e BRS Juruá) de feijão-caupi de porte semi-prostado, em diferentes densidades de plantas (DP) (2; 6; 10; 14; 18 e 22 plantas m-2). Três ensaios foram conduzidos, sob irrigação por aspersão, em solo Neossolo Flúvico, textura média, no período de agosto a outubro de 2011, campo experimental da Embrapa Meio-Norte, município de Teresina, PI.CONAC 2012. Disponível em: http://www.conac2012.org/resumos/pdf/026a.pdf. Acesso em: 25 jun. 2013

Spatio-temporal variations in the urban rhythm: the travelling waves of crime

This is the final version. Available from EDP Sciences via the DOI in this record.In the last decades, the notion that cities are in a state of equilibrium with a centralised organisation has given place to the viewpoint of cities in disequilibrium and organised from bottom to up. In this perspective, cities are evolving systems that exhibit emergent phenomena built from local decisions. While urban evolution promotes the emergence of positive social phenomena such as the formation of innovation hubs and the increase in cultural diversity, it also yields negative phenomena such as increases in criminal activity. Yet, we are still far from understanding the driving mechanisms of these phenomena. In particular, approaches to analyse urban phenomena are limited in scope by neglecting both temporal non-stationarity and spatial heterogeneity. In the case of criminal activity, we know for more than one century that crime peaks during specific times of the year, but the literature still fails to characterise the mobility of crime. Here we develop an approach to describe the spatial, temporal, and periodic variations in urban quantities. With crime data from 12 cities, we characterise how the periodicity of crime varies spatially across the city over time. We confirm one-year criminal cycles and show that this periodicity occurs unevenly across the city. These ‘waves of crime’ keep travelling across the city: while cities have a stable number of regions with a circannual period, the regions exhibit non-stationary series. Our findings support the concept of cities in a constant change, influencing urban phenomena—in agreement with the notion of cities not in equilibrium.Leibniz AssociationArmy Research OfficeScience Without Borders program (CAPES, Brazil