O feijão é um vegetal pertencente à família das fabáceas e de relevante importância alimentar. Objetivou-se com o trabalho avaliar a influência do fertilizante mineral, biofertilizante e pó de rocha e a interação entre os fertilizantes na produtividade e qualidade das sementes de feijão. Os tratamentos utilizados foram T1 (testemunha - controle); T2 (150 kg/ha de fertilizante mineral); T3 (4 ton/ha de fertilizante pó de rocha); T4 (120 litros/ha de biofertilizante); T5 (150 kg/ha de fertilizante mineral + 120 litros/ha de biofertilizante); T6 (4 ton/ha de fertilizante pó de rocha + 120 litros/ha de biofertilizante); T7 (150 kg/ha de fertilizante mineral + 4 ton/ha de fertilizante pó de rocha + 120 litros/ha de biofertilizante). Realizaram-se análises dos componentes de produção, produtividade e qualidade das sementes. Os dados foram submetidos à análise de variância e as médias comparadas pelo teste de Tukey. Concluiu-se que a aplicação de diferentes fontes de fertilizantes não altera significativamente os componentes de produção altura, diâmetro do caule, inserção da primeira folha, número de vagens por planta, grãos por planta, produtividade e as variáveis da qualidade de sementes: germinação, massa seca de plântulas e condutividade elétrica na cultura do feijoeiro (Phaseolus vulgaris L.).
O Sistema de Plantio Direto (SPD) é uma prática agrícola conservacionista capaz de promover diversos benefícios, destacando-se as melhorias nos atributos físicos, químicos e biológicos do solo. Embora seja um sistema que já está bem consolidado no Cerrado, a região ainda é caracterizada, principalmente, pelo monocultivo de soja ou sucessão (soja/milho), o que prejudica o solo e a produtividade a longo prazo. Assim a adoção da rotação de culturas, com diferentes espécies vegetais, como as plantas de cobertura, é uma das premissas básicas do SPD, fundamental para manter boa cobertura do solo e eficiente ciclagem de nutrientes. Dessa forma, o objetivo do trabalho, realizado por meio de uma pesquisa bibliográfica de caráter exploratório e abordagem qualitativa, foi trazer informações referentes ao SPD e a rotação de culturas para melhoria do solo do Cerrado. A rotação de culturas é uma prática viável de se empregar em áreas de cultivo agrícola, contribuindo para a melhoria da qualidade do solo, para o controle de plantas daninhas, doenças e pragas, reduzindo a necessidade da aplicação de agrotóxicos, além de otimizar o aproveitamento dos nutrientes. Em suma, conclui-se que a implantação do SPD no Cerrado, respeitando a premissa básica da rotação de culturas, é uma alternativa viável que contribui para a produção agrícola sustentável na região, além de ser uma prática de fácil execução, baixo custo e que proporciona ganhos produtivos, se feito da maneira correta.
Campomanesia adamantium (Cambess.) Berg O. is a native of Savanna, popularly known as gabiroba, guavira, or gabiroba-do-campo, and has many uses, with its fruit being consumed fresh or processed. This study aimed to evaluate different doses of phosphorus and nitrogen in the initial development of gabiroba (Campomanesia adamantium) cultivated in pots. Five doses of phosphorus (0, 100, 200, 300, and 400kg ha-1 of P2O5) and three doses of nitrogen (0, 100, and 200 kg ha-1of N) were tested. The experimental design used was completely randomized in a 5x3 factorial scheme with six replications. The evaluations were carried out 120 days after plant emergence, and the variables analyzed were stem diameter, plant height, and number of leaves. Data were subjected to analysis of variance and F-test. The means were compared by the Tukey test at p0.05. Regression analyzes were adjusted for phosphorus doses. The gabiroba responds significantly to the addition of phosphorus, with the dose of 400 kg ha-1 of P2O5 providing the highest height and the dose of 300 kg ha-1 of P2O5 providing the greatest stem diameter and the number of leaves. Up to 120 days old, gabiroba seedlings do not respond significantly to nitrogen fertilization.
The use of multifunctional microorganisms (MM) directly benefits the growth and development of plants due to the production of phytohormones and siderophores, supply of nutrients, and assimilation of atmospheric nitrogen (N2), as well as, indirectly, by protecting plants against pathogens. In this way, the search for sustainable agricultural systems is of great importance in searching for cultivation technologies that provide productive increments and minimize production costs and negative environmental impacts. The study aimed to determine the effect of multifunctional microorganisms on gas exchange, grain yield, and production components in soybean plants. In the field experiment, 2019/2020 harvest, a randomized block design was used, with 32 replications. Soybean plants were treated with a consortium of microorganisms Serratia marcensens (BRM 32114) + Bacillus sp. (BRM63573), and, as a control, soybean plants were treated without intercropping. Soybean plants treated with microorganisms showed an increase in photosynthetic rate (16.65%), stomatal conductance (37.50%), the internal concentration of CO2 (10.36%), a mass of 100 grains (4.04%), and yield of grains (14.83%) about untreated plants. Therefore, using a consortium of multifunctional microorganisms, combining multiple functionalities from different microorganisms, shows the potential to increase the agronomic performance of soybean plants. Co-inoculation technology appears as a strategic component of achieving sustainable agriculture.
Coriander (Coriandrum sativum) is a species highly appreciated in Brazilian cuisine and of high nutritional importance due to the presence of vitamins, calcium, and iron. Leafy vegetables are considered nutritionally demanding as their cycles are relatively short and the lack of any essential element affects their growth, yield and quality. This study aimed to evaluate the response of coriander plants (Coriandrum sativum L.) to foliar spraying of boron doses. The experiment was carried out in a greenhouse at The State University of Goiás, Campus Ipameri, in Ipameri-GO. The experimental design was completely randomized, with five treatments and four replications. The treatments consisted of five boron doses applied by foliar spray (0, 1.0, 1.5, 2.0 and 3.0 kg ha-1) using boric acid (17% of Boron) as the source. Fresh and dry matter of shoot and root and leaf boron contents were evaluated. Data were subjected to analysis of variance (F test) and the effect of boron doses were evaluated by regression analysis. The application of 3.0 kg ha-1 of boron increases the boron content of coriander plants, and the fresh and dry matter of roots and shoots was not significantly increased.
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