Competição de variedades de algodão herbáceo para cultivo no agreste pernambucano

Alves, Francisco Abel Lemos; Cavalcante, Farnésio de Sousa; Oliveira-Júnior, Ivan Souto de; Ferraz, Ivan Savioli; Silva, Sérvulo Mercier Siqueira e

doi:10.12661/pap.2019.003

Cited by 5 publications

(4 citation statements)

References 9 publications

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“…The average results obtained for upland cotton boll weight were 4.33 g for T 1 , 5.34 g for T 2 and 5.48 g for T 3 , in the two cultivation cycles (Table 4), which are within the range observed by Alves et al (2019) evaluating the ten varieties of cotton in the Agreste region of Pernambuco, Brazil, with boll weight ranging from 3.94 to 8.78 g. Boll weight values in the treatments with reuse water were higher than those observed by Nascimento et al (2018), evaluating the production of cotton cultivar BRS Topázio as a function of different types of domestic reuse wastewater, with variations from 4.55 to 5.10 g per boll. Ferreira et al (2018), working with upland cotton BRS Araripe cultivated under different sources of organic fertilization (cattle manure, carbonized rice straw), observed boll weights ranging from 5.5 to 7.8 g, results that are higher than the ones obtained in the present study.…”

Section: Resultssupporting

confidence: 82%

Nutritional status of cotton plants under fertigation with reuse water and phosphate fertilization

Filho

Neto

Dias

et al. 2020

Rev. bras. eng. agríc. ambient.

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Water reuse is an important practice in water resource management especially in arid and semi-arid areas. The objective was to evaluate the mineral composition and boll weight of upland cotton (cultivar BRS 335) plants under fertigation with domestic sewage effluent and phosphate fertilization. An experiment was carried out using randomized block design in a 3 × 2 factorial scheme with six repetitions. Cotton plants were fertigated with three fertigation solutions containing domestic sewage effluent (RW) and supply water (SW) in the proportions of 100% SW - T1, 50% SW + 50% RW - T2 and 100% RW - T3, and two phosphate fertilizer managements (with and without phosphate fertilization at pre-planting). Macronutrient and micronutrient concentrations in the shoots and boll weight were measured and evaluated. Fertigation utilizing reuse water is able to supply both water and part of the nutritional demand of cotton plants. Calcium, copper, iron and zinc concentrations in cotton leaves were below the optimum range for the crop. Reuse water did not meet the total requirements of Ca, Cu, Fe and Zn of cotton, so complementary mineral supplementation with these nutrients is recommended for the crop to obtain high yield.

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Section: Resultssupporting

confidence: 82%

Nutritional status of cotton plants under fertigation with reuse water and phosphate fertilization

Filho

Neto

Dias

et al. 2020

Rev. bras. eng. agríc. ambient.

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“…The resin application increased the root growth and number of leaves of wild radish plants, even in the treatment with 40 % of the ETc. However, according to Alves et al (2019), the soil moisture should be maintained high, close to the field capacity, over the wild radish cycle, to obtain good yields. The resin maintained the soil at field capacity with no effects on the plant root morphology and physiology, even under irrigation water deficit conditions (40 % of the ETc), as also observed by Silva et al (2017).…”

Section: Resultsmentioning

confidence: 99%

Tree resin as a cultivation strategy under water deficit

Pimenta

Santos

Júnior

et al. 2021

Pesqui. Agropecu. Trop.

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The search for alternatives that enable the improvement of the soil water retention capacity should focus on a better water use by cultivated plants. This study aimed to evaluate the effect of natural tree resin rates and irrigation levels on the cotton (intermediate cycle) and wild radish (short cycle) crops. Two experiments were conducted in a completely randomized design, in a 5 × 5 factorial arrangement, with three replications and five tree resin rates (0, 0.67, 1.33, 2.00 and 2.67 g plant-1), five soil water tensions (15, 30, 45, 60 and 75 kPa) for cotton plants and five irrigation water levels (40, 60, 80, 100 and 120 % of the ETc) for wild radish plants. The plant height, stem diameter and number of leaves were evaluated at 93 days after sowing (DAS) for the cotton plants; while the plant height, root diameter and number of leaves were evaluated at 30 DAS for the wild radish plants, as well as quantified the shoot and root dry weights of both plant species. The application of tree resin reduces the susceptibility of the crop to water deficit, being 2.7 g plant-1 the highest recommended rate to improve the plant development. The use of tree resin increases the water-use efficiency in cotton and wild radish crops in up to 0.68 g L-1 and 69.6 g L-1, respectively.

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“…In the Brazilian semi-arid region, the use of PGPB seeks to introduce a sustainable perspective to agricultural activities in the region, where cotton cultivation stands out. Brazil is the third largest producer and second leading exporter of cotton worldwide and the Northeast region is the second largest cotton producer in the country, contributing with 26% of total production (Alves et al, 2019). The advancement of the agricultural sector in this region brings inherent concerns related to soil degradation and the risks that toxic agrochemicals cause to one's health.…”

Section: Introductionmentioning

confidence: 99%

Biotechnological potential of growth-promoting bacteria in cotton (Gossypium hirsutum L.) crop

Farias,

Melo,

Freitas

et al. 2024

Rev. Bras. Ciênc. Ambient.

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Studies involving plant growth-promoting bacteria are attracting increasing attention in the agricultural sector due to their potential to improve growth and production, and to protect plants from biotic and abiotic stresses. The present study aimed to evaluate the effects of three species of plant growth-promoting bacteria (Bacillus subtilis, Priestia megaterium, and Priestia aryabhattai) on the growth and morphological and biochemical aspects of Gossypium hirsutum L. (cotton) seedlings. The experiment was conducted in a greenhouse with four treatments (one control and three inoculations) and five replications per treatment. The seeds were inoculated by immersion in bacterial suspensions (109CFU/mL) and then sown in pots. The plants were monitored for 60 days. During collection, the plants were measured for the fresh mass of roots and shoots, the height of the shoots, stem diameter, and number of leaves. Leaf samples were collected and used for biochemical analyses. The results obtained showed that seeds treated with P. aryabhattaihad significant improvements in the parameters of fresh mass, plant height, stem diameter, and number of leaves, and in the contents of chlorophyll (a, b, and total), nitrogen, and proteins concerning plants in the control treatment. Plants treated with P. megaterium also achieved improvements in fresh mass, stem diameter, nitrogen, and protein contents. These results indicate the potential of these plant growth-promoting bacteria for use in cotton crops and can be employed in the preparation of biostimulants and biofertilizers.

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Competição de variedades de algodão herbáceo para cultivo no agreste pernambucano

Cited by 5 publications

References 9 publications

Nutritional status of cotton plants under fertigation with reuse water and phosphate fertilization

Nutritional status of cotton plants under fertigation with reuse water and phosphate fertilization

Tree resin as a cultivation strategy under water deficit

Biotechnological potential of growth-promoting bacteria in cotton (Gossypium hirsutum L.) crop

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