Rice is the staple food crop for about 50% of world's population. It grown mainly under two ecosystems, known as upland and lowland. Lowland rice contributes 76% global production. The anaerobic soil environment created by flood irrigation lowland brings several chemical changes in rhizosphere that may influence growth development consequently yield. main occur flooded or waterlogged soils are decreases oxidation–reduction redox potential increases iron (Fe2+) manganese (Mn2+) concentrations...

Micronutrient deficiencies have been reported in food crops worldwide. Several macro- and micronutrients are essential for human health. However, among these elements, the trace elements zinc (Zn), iron (Fe), iodine (I), selenium (Se), cobalt (Co) limiting diets of much world's population. According to United Nations estimates, about 1 billion people, especially woman children, suffering from malnutrition Africa, Asia, South America. Improving bioavailability is an important strategy...

Abstract Dry bean is an important legume crop for a large portion of the world's population. Nitrogen (N) one most yield-limiting nutrients in all dry bean–producing regions world. A greenhouse experiment was conducted to evaluate responses 15 genotypes N fertilization with and without rhizobial inoculation grown on lowland soil locally known as Varzea. treatments were (i) 0 mg kg−1 (control or N0), (ii) + strains (N1), (iii) 50 (N2), (vi) 200 (N3). Shoot weight, grain yield, yield...

Rice is a main food crop for about half of the world's population, and phosphorus (P) limiting nutrient in rice production tropical lowlands. A greenhouse experiment was conducted to evaluate P requirements lowland grown on soil (Inceptisol). Dry matter, grain yield, yield-attributing characteristics were significantly (P < 0.01) influenced by fertilization. Based quadratic response, maximum shoot dry weight yield obtained with application 190 mg kg−1 soil. Maximum panicle, tiller number,...

Understanding rice phenology and nutrient uptake pattern is important for adequate crop management improving yields. A greenhouse experiment was conducted with the objective to monitoring upland (cv. Talento) during its growth cycle. Growth observations plant analysis were performed at initiation of tillering (IT), active (AT), panicle (PI), booting (B), flowering (F) physiological maturity (PM). Shoot dry weight plus grain yield root increased significantly (P < 0.01) age followed...

Dry bean (Phaseolus vulgaris L.) is an important legume worldwide and nitrogen (N) most yield limiting nutrients. A field experiment was conducted for two consecutive years to evaluate response of 15 dry genotypes rhizobial inoculation. The N rhizobia treatments were (i) control (0 kg ha−1), (ii) seed inoculation with strains, (iii) strains + 50 ha−1, (iv) 120 ha−1. Straw yield, grain components significantly influenced by treatments. Grain straw number pods m−2, harvest index year,...

BRS FC310 is a semi-early common bean cultivar (mean cycle of 80 days) and features moderate resistance to the major diseases in crop. It has anthracnose, rust, bacterial blight, wilt. In addition, it upright plant architecture excellent grain commercial nutritional quality.

Upland rice is an important crop in the cropping systems of South America, including Brazil. Two greenhouse experiments were conducted to determine influence lime and gypsum on yield components upland changes chemical properties Oxisol. The rates used 0, 0.71, 1.42, 2.14, 2.85, 4.28 g kg−1 soil. 0.28, 0.57, 1.14, 1.71, 2.28 kg−1. Lime as well significantly increased plant height, straw grain yield, panicle density a quadratic fashion. Adequate for maximum 1.11 1.13 kg−1, respectively. Plant...

Tropical legume cover crops are important components in cropping systems because of their role improving soil quality. Information is limited on the influence nitrogen (N) fertilization growth tropical grown Oxisols. A greenhouse experiment was conducted to evaluate N with or without rhizobial inoculation and shoot efficiency index 10 crops. Nitrogen treatment were (i) 0 mg kg−1 (control N0), (ii) + Bradyrhizobial strains (N1), (iii) 100 (N2), (iv) 200 (N3). The × interactions significant...

Potassium (K) uptake is greatest among essential nutrients for rice. Data related to yield, yield components, and K-use efficiency by upland rice genotypes are limited. A greenhouse experiment was conducted evaluate influence of K on growth, genotypes. levels applied an Oxisol were zero (natural level) 200 mg kg1 soil 20 evaluated. Plant height, shoot dry weight, grain 1000-grain spikelet sterility significantly affected genotype treatments. Genotypes Primavera BRA 1600 the most efficient...

Abstract: The objective of this work was to evaluate the genotypic diversity for nodulation in common bean (Phaseolus vulgaris) genotypes Andean and Mesoamerican gene pools present core collections Embrapa, Brazil. Evaluations were carried out two stages: first one with 879 genotypes, taking cultivar 'Ouro Negro' as reference; second 116 greater nodulation, identify those showing stability stages. Rhizobium strains inoculated pre-germinated seed. Plants received weekly a nutrient solution...

This study aimed to characterize, based on the morphology and use of carbon sources, rhizobial isolates obtained from nodules wild common bean genotypes cultivated soil samples states Goiás, Minas Gerais Paraná.Based morphological source use, similarity matrixes were generated perform clustering analysis Jaccard index.A total 523 with predominance that acidify culture medium showed fast growth.Isolates soils Araucária Prudentópolis produced a greater amount mucus than those Jussara, Nova...

Among the soil quality parameters, microbial biomass carbon (C mic ) is one of most used; however, in contrast to ecological use this parameter, analysis process used for C determination has a negative bias with regard toxic waste generation. Aiming reduce generation analytical process, comparative tests were performed between titrimetry and spectrophotometry quantification from samples collected at 0-10 cm 10-20 deep three types different chemical, physical management characteristics....

Dry bean is an important source of protein for the population South America, and yield this legume very low in continent. Knowledge nutrient uptake use efficiency a crop fundamental to improve yield. A greenhouse experiment was conducted evaluate growth, uptake, dry (Phaseolus vulgaris L., cv. BRS Valente) during growth cycle. Plant samples were collected at 15, 30, 45, 60, 73, 94 days after sowing. Root weight, maximum root length, shoot number trifoliates significantly increased quadratic...

O objetivo deste trabalho foi avaliar o efeito do feijoeiro geneticamente modificado quanto à resistência ao Bean Golden Mosaic Vírus, BGMV (Olathe M1-4), sobre organismos não alvo. De um experimento implantado no campo, em delineamento inteiramente casualizado, com dois tratamentos Pinto e evento elite Olathe períodos amostrais (estádio V4 R6) dez repetições, obtiveram-se células bacterianas cultivadas da rizosfera solo rizosférico, para as quais se procedeu extração de DNA total. A região...

Rice, dry bean, corn, and soybean are important food crops. Phosphorus (P) deficiency is one of the most yield-limiting factors for these crops grown on highly weathered Brazilian Oxisols. Four greenhouse experiments were conducted to determine P requirements four The levels used 0, 50, 100, 200, 400 mg kg−1. Growth, yield, yield components evaluated crop species significantly increased with application fertilization. Most responses quadratic in fashion when was applied range 0 Maximum grain...

Dry bean (Phaseolus vulgaris L.) is an important food legume for the South American population. In America it eaten every day by all sections of population along with rice. The average yield this low in and use inadequate rates fertilizers, including potassium (K), one main factors. A greenhouse experiment was conducted to evaluate thirty dry genotypes K-use efficiency. K used were 0 mg kg−1 (low) 200 (high). Soil Oxisol. There a significant response level most growth, yield, components....

BRS FS311 is a cultivar of common bean in the striped seed coat group, with high yield, larger grain, and visual appearance suitable for standard. It also has cycle semi-early, upright architecture moderate resistance to fusarium wilt anthracnose.

BRS FC415 is a common bean cultivar with carioca grain type, high commercial quality, and slow seed coat darkening.It has wide adaptation to different production regions, mean yield (2,310 kg ha -1 ), potential (3,901 resistance Fusarium wilt, root rots, anthracnose.

The common bean cultivar BRS FC409 has high-quality seeds of the commercial group carioca and increased iron, zinc protein contents. It produces mean yields 2,048 kg ha-1, can potentially reach 3,755 ha-1 is resistant to fusarium wilt, curtobacterium anthracnose, bacterial blight angular leaf spot.