Results: 75

Iceberg lettuce cultivated in different systems of planting and sources of fertilizer

Braz. j. biol; 84 (), 2024
Organic fertilization is a cheaper and highly effective option for profitability and consequent improvement of the soil's physical, chemical, and biological structure. Thus, the objective of this work was to evaluate different types of fertilization: organic (poultry shed litter), mineral, and leaf path ...

Impact of nitrogen and phosphorus fertilizers on Cry1Ac protein contents in transgenic cotton

Braz. j. biol; 83 (), 2023
Abstract Application of different fertilizers to check the efficiency of expression of Bt (Bacillus thuringiensis) gene in one of the leading commercialized crops (cotton) against Lepidopteran species is of great concern. The expression of Cry protein level can be controlled by the improvement of nutrien...

Nutritional efficiency in sunflower cultivars under dosages of potassium in semiarid region

Biosci. j. (Online); 39 (), 2023
Potassium (K) participates in critical processes in sunflower cultivation, such as osmotic regulation and translocation of photosynthesis. However, the absorption or accumulation of this nutrient occurs differently owing to edaphoclimatic factors or between cultivars. The objective of this study was to e...

Obtención y caracterización fisicoquímica de un sustrato nutritivo hecho a partir de cáscaras de cacao para la producción de plántulas de hortalizas

En el beneficiado del cacao se producen una gran cantidad de residuos, las mazorcas generalmente son desechadas dentro de los mismos cultivos y genera problemáticas como la proliferación de insectos y microorganismos patógenos. De estos desechos las cáscaras son las de mayor relevancia. La Escuela de...

Growth and productivity of ágata potato cultivar under different doses of organomineral fertilizer

Biosci. j. (Online); 38 (), 2022
Potato is a plant that has high nutrient demand during its cycle. Given the concern with the environment, due to the large amount of synthetic mineral fertilizer used in the crops, the objective of this work was to evaluate the efficiency of organomineral fertilizers in the cultivation of potato, cultiva...

Agronomic performance of salad tomatoes grown in different conduction systems and fertilization doses

Biosci. j. (Online); 38 (), 2022
Looking to reduce the cost and maximize tomato productivity, this study aimed to evaluate fertilizer doses and conduction systems. For this, a field experiment was carried out in randomized blocks, in a simple factorial scheme, which consists in four fertilizer doses, (50, 100, 150 and 200% dose), and fo...

Water depths and nitrogen rates on sugarcane growth and dry biomass accumulation

Biosci. j. (Online); 38 (), 2022
Irrigation and soil fertilization management are essential agricultural practices that improve the growth and development of sugarcane plants and, consequently, increase their production capacity, which is important for sugar and alcohol productions. In this context, the objective of this work was to eva...

Effects of different combinations of N, P and K at different time interval on vegetative, reproductive, yield and quality traits of mango (Mangifera Indica. L) cv. Dusehri

Braz. j. biol; 82 (), 2022
The experiment was carried out on mango cv. Dusehri to investigate the effect of N, P and K fertilizers on vegetative, reproductive growth, yield and fruit quality. Eight different fertilizer combinations such as T1 (control), T2 (N), T3 (P), T4 (K), T5 (NP), T6 (NK), T7 (PK) and T8 (NPK) were used. Indi...

Effects of Indole-3-Butyric Acid (IBA) and rooting media on rooting and survival of air layered wax apple (Syzygium samarangense) CV Jambu Madu

Braz. j. biol; 82 (), 2022
The wax apple or jambu madu, is a non-climacteric tropical fruit from Myrtaceae family and widely cultivated in South East Asia. The limited availability of good quality seedlings of wax apple is the main problem to development of flourish it's market share in the current fruit industry. Therefore, in or...

The application of ammonium sulphate and amino acid on cotton: effects on can improve growth, yield, quality and nitrogen absorption

Braz. j. biol; 82 (), 2022
A field study was carried out to determine the influence of foliage applied plant growth promoter and retardant in improving soil applied sulphur fertilizer use efficiency in cotton during two consecutive summers 2014 and 2015. Experimental trial comprised of three different sources of sulphur (ammonium ...