This study was to evaluate the nutrition and the agronomic part of bean intercropped with castor crops submitted to sources and levels of B in the Anápolis-GO, Brazil. The treatments consisted of two sources of B (borax = 11% B and boric acid = 17% B) combined with five levels of B (0.0, 0.5, 1.0, 2.0 and 4.0 kg ha -1 in soil) in bean intercropped with castor, plus monoculture, using 1.0 kg ha -1 B. That leaf levels of B and S in beans, and of B, N, Ca, Mg and Fe in castor were influenced by the sources and levels of B in the intercropping. The bean yield intercropped with castor was not influenced by borated fertilization, neither by the interaction of factors. The highest yield of castor intercropped with beans, 2.040 kg of grains ha -1 , was obtained with the 1.9 kg ha -1 of B, regardless of the source used.

The use of intensive mechanization in no-tillage areas can change soil physical conditions, mainly in the "Cerrado", which has reduced cover ratio. This study aimed to evaluate physical and mechanical properties of a red latosol under no-tillage and subjected to simulated dynamic traffic in different surfaces conditions. For this, soil samples were collected, with dimensions of 0.2 × 0.2 × 0.3 m (height, width and length), in an area subjected to no-tillage in the last four years. Subsequently, samples were transported to the laboratory and subjected to different traffic levels in a simulator. Shortly after, a completely randomized experimental design was set up, in factorial 2 × 5, with two covers (with and without haystack) and five traffic levels (zero, one, two, four and eight run overs) applied by the simulator. Assessed physical properties were superficial settlement, soil density, compaction degree and pre-consolidation pressure. Results showed that superficial settlement, soil density and compaction degree were significantly influenced by soil cover and traffic intensity. Pre-consolidation was not affected by cover, and had higher values when subjected to more traffic intensity.

The objective of this work was to evaluate the possibility of using herbicides registered for the cultivation of beans in castor crop when intercropped with beans and the influence of weeds in the crops. A randomized block design was used in a 2 x 4 + 1 factorial scheme with three replications. The herbicides chosen were: (A) fluazifop-p-butyl + fomesafen (125 + 125 g ai L-1) and (B) bentazon + imazamox (600 + 28 g ai L-1). They were applied in four different dosages (0.5; 1.0; 2.0 and 4.0 L ha-1) of the commercial product, plus a control as no weed management. The number of racemes per plant, number of berries per raceme, weight of one hundred grains and castor yield were evaluated. In the bean crop, the number of pods per plant, number of grains per pod, weight of one hundred grains and grain yield were evaluated. Weed competition reduced crop yields by 65.5% for castor beans and 71.87% for beans when intercropped. The results suggest that intercropping of beans with castor is viable and weed management can be carried out with the herbicides evaluated in this study, respect to the doses. The herbicides demonstrate selectivity for BRS Paraguaçu castor crop, showing higher productivity at doses of 612.25 g ai ha-1 and 1506.4 g ai ha-1 of the herbicides fluazifop-p-butyl + fomesafen and bentazon + imazamox, respectively.

This study aimed to evaluate the application of chemical defensives and long-life inoculant, in mixtures or not, under the nodulation process of plants and the quality of soy seeds during storage. The first was carried out in a greenhouse and completely randomized design was used, in an 8 x 2 factorial scheme, with three replications, and the treatments consisted of applications of seed treatments via industrial: (T1 - control; T2 - MaximAdvanced; T3 - Fortenza; T4 - long-life inoculant; T5 - MaximAdvanced + Fortenza); T6 - MaximAdvanced + long-life inoculant; T7 - Fortenza + long-life inoculant; T8 - MaximAdvanced + Fortenza + long-life inoculant), which were sown in pots containing soils from two cultivation areas; the second in the laboratory, using a completely randomized design, in a factorial scheme 8 x 7, with four replications, with treatments consisting of eight combinations of industrial seed treatment in the greenhouse, stored for two months. That seed treatment industrial with fungicide/insecticide/inoculant, applied in isolation or not, does not influence the soy nodulation process. Soy seeds, regardless of the type of treatment received with fungicide/insecticide/long-life inoculant products, in mixtures or in isolation, may be stored for a period of 40 days for commercial purposes.