The objective of this work was to evaluate the degree of compatibility and agronomic performance in clonal genotypes of canephora coffee plants (Coffea canephora ex Froehner) for cultivation in the state of Rondônia, Brazil. The study was conducted with nine genotypes with three replications of Coffea canephora Arranged in the field: UFRO-60; UFRO-31; UFRO-61; UFRO-25; UFRO-03; UFRO-08; UFRO-21; UFRO-05 and UFRO-138 In adulthood and in two years of harvest (2013/2014 and 2014/2015). We evaluated: productivity, profitability, conversion index fruit cherry/grain benefited, mass of one hundred grains benefited, average diameter of the fruits, number of rosettes per branch, average distance between rosettes and number of fruits per rosette. Additionally, the degree of compatibility between the clones of clonal. The genotypes of Coffea canephora with the best agronomic performances evaluated for the edafoclimatic conditions of the State of Rondônia in this study were UFRO-08, UFRO-25, UFRO-03 and UFRO-138. According to the compatibility tests, the sequence of correct disposition in the field of Coffea canephora among the genotypes studied in this study are: UFRO-138; UFRO-31; UFRO-25; UFRO-08; UFRO-60; UFRO-21; UFRO-61; UFRO-03 and; UFRO-05. Close to 74% of the tests Were and self-pollination tests resulted in low fruiting, evidencing the characteristic of self-incompatibility.

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RESUMOA cultura do rabanete (Raphanus sativus L.) possui ciclo curto, sendo cultivada principalmente pela agricultura familiar. Desta forma, se faz necessário definir o espaçamento ideal que otimize a produção e o melhor aproveitamento da área de cultivo da cultura, e assim garantir maior rentabilidade ao pequeno produtor. Diante disso, objetivou-se com este trabalho avaliar o desempenho agronômico de plantas de rabanete cultivadas em diferentes espaçamentos entre linhas e entre plantas. O experimento foi conduzido na Universidade Federal de Rondônia. O delineamento utilizado foi em blocos casualizados em esquema fatorial 2x2, com cinco repetições. O primeiro fator foi constituído de dois espaçamentos entre plantas (0,05 e 0,10m) e o segundo de dois espaçamentos entre linhas de plantio (0,10 e 0,20m). Os parâmetros avaliados foram altura da planta, diâmetro da raiz tuberosa (transversal e longitudinal) massa fresca da parte aérea e raiz, massa seca da parte aérea e da raiz tuberosa. O espaçamento de 0,05m entre plantas e 0,20m entre linhas proporcionaram as melhores características agronômicas. PALAVRAS-CHAVE: densidade, espaçamento ideal, Raphanus sativus L. AGRONOMIC CHARACTERISTICS OF RABANET IN THE FUNCTION OF PLANT SPACE AND BETWEEN LINESABSTRACT The radish (Raphanus sativus L.) culture has a short cycle, being cultivated mainly by family farming. In this way, it is necessary to define the ideal spacing that optimizes the production and the best use of the area of cultivation of the crop, and thus guarantee a greater profitability to the small producer.The objective of this work was to evaluate the agronomic performance of radish plants grown at different

Amazonian soils have some physical, chemical and mineralogical differences, understanding the differences is important to understand the behavior of nutrients in the soil, especially phosphorus. The study was carried out in two types of soils: a Hydromorphic soil profile and a Non-hydromorphic soil profile in the Central Amazon region of Brazil, located in the metropolitan area of Manaus. Five depths were sampled: 0.00-0.05; 0.05-0.1; 0.1-0.2; 0.2-0.4; and 0.4-0.6 m. Physical, chemical, mineralogical and morphological attributes of both soils were studied. With the exception of clay, the levels of sand and silt remained stable in depth. The levels of organic matter gradually decrease in depth. The pH in water and in KCl, ∆pH, point of zero load, were similar between the surface and subsurface soils. Al 3+ , H + +Al 3+ , CECt, CECT and clay activity were similar in Non-hydromorphic soil and increase in surface (< 0.2 m) and stabilize in subsurface (> 0.2 m). In both soils, the bases are reduced in subsurface (> 0.2 m). Aluminum and iron oxalate reduce with greater expressiveness in Non-hydromorphic soil. Aluminum and dithionite iron exhibit the same behavior. The levels of Goethite (Gt) and Hematite (Hm) are high in depth in the Non-hydromorphic soil and decrease in the Hydromorphic soil. There are sensitive distinctions between soils, due to the imposed edaphoclimatic conditions.

One of the most relevant factors for the formation of coffee crops is to use quality seedlings. However, the competition of weeds for nutrients and water from the soil can negatively affect your obtaining. Thus, the control of weeds in nursery is often dependent on the use of herbicides, considering that the manual activity is costly. In this way, this work aimed to evaluate the effectiveness of weed control and the effects on the development of clonal seedlings of coffee (Coffea canephora Pierre ex Froehner) by application of herbicides oxyfluorfen and pendimenthalin in nursery conditions. The experiment was conducted under a completely randomized design in factorial scheme 2 &times; 5, two herbicides: Pendimethalin and Oxifluorfen in five doses: corresponding to 0, 1, 2, 4, 8 L.ha-1 of commercial products. Was evaluated during the experiment the emergence of weeds and to end (140 days), were evaluated: seedling Height, stem diameter, leaf area, number of sheets, number of roots, root length, root volume, dry mass of roots and shoot dry matter. There was significant effect for seedling height, shoot dry matter and total dry mass, in which the pendimethalin caused damage to seedlings in comparison to oxyfluorfen. The use of the herbicides Pendimethalin and Oxyfluorfen obtained satisfactory control of weeds with application of 1080g and 648 g a.i. ha-1, respectively.